Mak­ing cli­mate respon­si­bil­i­ty mea­sur­able: the Prod­uct Car­bon Foot­print at ETHEN

Any­one wish­ing to track and trans­par­ent­ly account for prod­uct-relat­ed emis­sions first needs a reli­able data foun­da­tion. Par­tic­u­lar­ly along com­plex sup­ply chains, it is there­fore becom­ing increas­ing­ly important to be able to trace which emis­sions are asso­ci­at­ed with a spe­cif­ic product.
At ETHEN ROHRE, we are cre­at­ing greater trans­paren­cy in this regard: for our capillary and precision tubes, we can cal­cu­late order-spe­cif­ic Prod­uct Car­bon Foot­prints (PCF) and pro­vide our cus­tomers with cor­re­spond­ing PCF dec­la­ra­tions. These fig­ures can be used as a basis for their own Scope 3 or sup­ply chain accounting.

 

From raw materials to the fin­ished precision tube

Our cal­cu­la­tion is based on the so-called cra­dle-to-gate approach, i.e. the ‘from cra­dle to fac­to­ry gate’ per­spec­tive. In doing so, we take into account the sys­tem bound­aries defined by ETHEN. The cal­cu­la­tion includes raw mate­r­i­al extrac­tion, the pre-pro­duc­tion of raw materials, relevant con­sum­ables and our inter­nal pro­duc­tion process­es. The trans­port of raw materials to our fac­to­ry is not cur­rent­ly includ­ed in the calculation.
Our dia­gram (de) illus­trat­ing the sys­tem bound­aries clear­ly shows exact­ly which areas of the prod­uct life cycle are includ­ed in the calculation.

Every order fol­lows its own path

When manufacturing precision tubes, no two orders are nec­es­sar­i­ly the same. Dimen­sions, materials and require­ments deter­mine which pro­duc­tion steps are nec­es­sary. This forms the basis of our cal­cu­la­tion methodology.
Rather than rely­ing sole­ly on a gen­er­al aver­age val­ue, we use a process-based, bot­tom-up approach that is inte­grat­ed into our dig­i­tal pro­duc­tion con­trol sys­tem. Our sys­tem takes into account the indi­vid­ual route an order takes through pro­duc­tion. Emis­sions are cal­cu­lat­ed on the basis of machine-spe­cif­ic esti­mates for aver­age process times and ener­gy con­sump­tion for the respec­tive process steps.
For upstream process­es, we source data from pub­licly recog­nised emis­sions data­bas­es such as ÖKOBAUDAT and BAFA, as well as from oth­er estab­lished indus­try standards. The emis­sion fac­tors and inter­nal process data used are based on data cur­rent as of 2025.

CO₂ fig­ures tai­lored to the spe­cif­ic order

In our PCF dec­la­ra­tions, we report both the total order-relat­ed emis­sions and the emis­sions inten­si­ty. The unit used for this is one kilo­gramme of the man­u­fac­tured prod­uct. We also present both fig­ures in rela­tion to the metres supplied.
In this way, we cre­ate a data set that reflects our manufacturing process: order-spe­cif­ic, trans­par­ent and traceable.
For us, cli­mate respon­si­bil­i­ty also begins with mak­ing it clear where emis­sions arise and on what basis they are calculated.

You can find out more about our method­ol­o­gy, the defined sys­tem bound­aries and the cal­cu­la­tion of the Prod­uct Car­bon Foot­print on our cli­mate respon­si­bil­i­ty page (de).

Inno­va­tion Means Con­tin­u­ous­ly Advanc­ing Quality

Inno­va­tion is often asso­ci­at­ed with new tech­nolo­gies or ground­break­ing inven­tions. For us at ETHEN, inno­va­tion means one thing above all: con­tin­u­ous­ly devel­op­ing our exist­ing process­es, manufacturing meth­ods and exper­tise. Because only through con­tin­u­ous improve­ment can we main­tain con­sis­tent­ly high quality standards.
Our aim is to reaf­firm our high standards of quality every sin­gle day. We achieve this not through indi­vid­ual major changes, but through many care­ful­ly con­sid­ered improve­ments in our dai­ly work. These improve­ments extend to our manufacturing process­es, materials, ser­vices and quality standards.

Flex­i­bil­i­ty in Manufacturing and Mate­r­i­al Selection

One exam­ple is our manufacturing process. We pro­duce capillary and precision tubes with out­side diameters rang­ing from 0.7 mm to 19.05 mm and offer our cus­tomers a high degree of flex­i­bil­i­ty. Thanks to our stock list and manufacturing process­es, we can also sup­ply small quan­ti­ties with­out a min­i­mum order quan­ti­ty. At the same time, we reliably man­u­fac­ture and deliv­er larg­er quan­ti­ties accord­ing to agreed schedules.
We are also con­tin­u­ous­ly expand­ing our exper­tise in the materials we use. Whether tita­ni­um, nick­el alloys, stainless or heat-resis­tant steels, or special materials: each mate­r­i­al group has its own require­ments in terms of pro­cess­ing, quality assur­ance and manufacturing process­es. We con­sis­tent­ly devel­op this exper­tise to pro­vide the right mate­r­i­al and spec­i­fi­ca­tion for a wide range of applications.

Effi­cient Process­es for Dif­fer­ent Requirements

Anoth­er important part of our approach to inno­va­tion is cam­paign pro­duc­tion. By group­ing pro­duc­tion accord­ing to materials, we cre­ate repro­ducible manufacturing con­di­tions, cost-effec­tive pro­duc­tion and reli­able deliv­ery times. At the same time, this approach allows us to respond flex­i­bly to dif­fer­ent cus­tomer require­ments and effi­cient­ly han­dle both indi­vid­ual require­ments and larg­er series.
Inno­va­tion does not end with the man­u­fac­ture of the tube. We also con­tin­u­ous­ly devel­op our ser­vices relat­ed to tube pro­duc­tion. Whether draw­ing, redraw­ing, straight­en­ing or anneal­ing: we sup­port our cus­tomers with our manufacturing exper­tise through­out the tube pro­duc­tion process, cre­at­ing the basis for indi­vid­ual requirements.

Precision Based on Clear­ly Defined Standards

Our com­mit­ment to quality is par­tic­u­lar­ly evi­dent in our manufacturing tolerances. Our precision tubes meet the require­ments of DIN EN ISO 1127 D4/​T4. We can also achieve tighter tolerances on request. Our own ETHEN tol­er­ance stan­dard of ±0.05 mm for the out­side diam­e­ter and ±10% for the wall thick­ness under­lines our com­mit­ment to pre­cise and repro­ducible manufacturing quality.
For us, inno­va­tion there­fore does not mean con­stant­ly rein­vent­ing what already works. Inno­va­tion means com­bin­ing expe­ri­ence with new insights, con­tin­u­ous­ly improv­ing process­es and pro­vid­ing our cus­tomers with precision, quality and reli­a­bil­i­ty over the long term.

Whilst pro­duc­tion is on hold, prepa­ra­tions are in full swing

From 10 to 30 August 2026, pro­duc­tion at ETHEN ROHRE will be sus­pend­ed. An important project will be car­ried out dur­ing this peri­od. Our anneal­ing fur­nace, which is around 45 years old, is under­go­ing a com­pre­hen­sive tech­ni­cal refit.
The anneal­ing fur­nace has been a cen­tral component of our pro­duc­tion for decades. To ensure it con­tin­ues to con­tribute reliably to the quality and process reli­a­bil­i­ty of our capillary and precision tubes in the future, the plant is being brought up to the lat­est tech­ni­cal standards in col­lab­o­ra­tion with our part­ner SOLO Swiss SA.

Care­ful prepa­ra­tion for a sched­uled refurbishment

The mod­erni­sa­tion was pre­ced­ed by many months of inten­sive prepa­ra­tion. Tech­ni­cal con­sul­ta­tions, face-to-face dis­cus­sions and several on-site vis­its took place in col­lab­o­ra­tion with the team from SOLO Swiss SA. This close coop­er­a­tion ensures that the refur­bish­ment can be car­ried out as planned in August.
Dur­ing the tem­po­rary clo­sure, only pro­duc­tion will be sus­pend­ed. Our office team will remain avail­able as usu­al through­out this peri­od and will con­tin­ue to be on hand to assist cus­tomers and busi­ness partners.
Dur­ing the tem­po­rary clo­sure, we will also wel­come vis­i­tors to our fac­to­ry. They will gain an insight into the progress of the refur­bish­ment and our pro­duc­tion process­es, and will be able to find out more about the project on site.

Invest­ment in quality and process reliability

Through this refit, we are mak­ing a tar­get­ed invest­ment in the future of our site. The mod­erni­sa­tion brings the anneal­ing fur­nace up to the lat­est state of the art and lays the foun­da­tions for con­tin­u­ing to car­ry out the heat treat­ment process reliably, effi­cient­ly and to the high stan­dard of quality our cus­tomers have come to expect.
Once the work is com­plete, we will resume pro­duc­tion with a tech­ni­cal­ly mod­ernised facil­i­ty. In doing so, we are strength­en­ing the long-term performance of our site and lay­ing the foun­da­tions for the reli­able man­u­fac­ture of our capillary and precision tubes.

Why our lead time begins even before the order is placed

In an indus­try char­ac­terised by precision, repeata­bil­i­ty and increas­ing­ly auto­mat­ed process­es, this may seem unusu­al at first glance. For us, how­ev­er, it is a delib­er­ate part of our approach to quality. Although mod­ern machines han­dle the major­i­ty of the manufacturing process, there are still steps that require expe­ri­ence, atten­tion to detail and indi­vid­ual judge­ment. At the same time, the man­u­al inspec­tion of every sin­gle tube reveals some­thing else: behind every capillary and precision tube lie not only machines and manufacturing process­es, but also peo­ple.

Pre­dictabil­i­ty as the foun­da­tion of production

To ensure we can offer our cus­tomers reli­able deliv­ery dates, we group pro­duc­tion by mate­r­i­al into what we call ‘mate­r­i­al cam­paigns’. Tita­ni­um, stainless steel and nick­el alloys are each processed with­in a fixed pro­duc­tion peri­od before the next mate­r­i­al cam­paign begins. This approach ensures sta­ble pro­duc­tion con­di­tions. Process­es and test­ing pro­ce­dures remain tai­lored to the respec­tive mate­r­i­al prop­er­ties. At the same time, pro­duc­tion capac­i­ties can be allo­cat­ed at an ear­ly stage and pro­duc­tion slots reserved in the long term. This pro­vides plan­ning cer­tain­ty. Those who know their require­ments ear­ly on can take pro­duc­tion dates into account in a tar­get­ed man­ner and reduce stock lev­els with­out com­pro­mis­ing on secu­ri­ty of supply.

Quality is not just a mat­ter of manufacturing

At ETHEN Rohre, the actu­al pro­duc­tion time encom­pass­es far more than sim­ply machin­ing the mate­r­i­al. It also includes all the inspec­tion and test­ing steps required to meet the high standards demand­ed of capillary and precision tubes. This includes a man­u­al quality inspec­tion of every sin­gle tube as the final stage of our manufacturing process.

Short lead times start with the right preparation

Short lead times do not begin only when an order is received. They start as ear­ly as the bundling of materials, the allo­ca­tion of pro­duc­tion capac­i­ty and the ear­ly coor­di­na­tion of all resources. Thanks to this struc­tured approach, we are usu­al­ly able to deliv­er with­in an ongo­ing mate­r­i­al cam­paign approx­i­mate­ly one week after receipt of the order. For our cus­tomers, this means a manufacturing process focused on quality, pre­dictabil­i­ty and reli­a­bil­i­ty, from the ini­tial prepa­ra­tion right through to the final quality inspec­tion of every sin­gle tube.

Would you like to find out more about our manufacturing or our deliv­ery options? Please feel free to con­tact us; we’ll be hap­py to advise you personally.

When every microme­tre counts: precision tubes as the back­bone of mod­ern sen­sor and mon­i­tor­ing systems

In mod­ern sen­sor and mon­i­tor­ing sys­tems, it is not only the quality of indi­vid­ual com­po­nents that deter­mines performance, but above all how they work togeth­er. This is pre­cise­ly where we at ETHEN Rohre come in. Our precision tubes in sen­sor tech­nol­o­gy ensure that pres­sure con­di­tions are trans­mit­ted sta­bly and measurement sig­nals are relayed with­out dis­tor­tion. This cre­ates a con­tin­u­ous measurement chain that our cus­tomers in the mechan­i­cal engi­neer­ing sec­tor can rely on at all times.

Capillary tubes for the finest tun­ing with­in the system

When it comes to high­ly sensitive appli­ca­tions, capillary tubes come into play in sen­sor sys­tems. With their very small diameters, they enable the pre­cise rout­ing of gas­es and liq­uids with min­i­mal dead vol­ume. This improves response speed and sig­nif­i­cant­ly increas­es measurement accu­ra­cy. Whether in pres­sure measurement lines, sen­sor con­nec­tions or test bench­es, our capillary tubes con­nect com­po­nents in such a way that sys­tems oper­ate sta­bly and reproducibly. 

The added val­ue of this precision is par­tic­u­lar­ly evi­dent in demand­ing sec­tors such as the auto­mo­tive indus­try or in safe­ty-crit­i­cal mon­i­tor­ing sys­tems. Here, tub­ing solu­tions must not only be man­u­fac­tured with precision, but also func­tion reliably under extreme conditions.

Tight tolerances for max­i­mum process reliability

The demands placed on tubes used in measurement and con­trol tech­nol­o­gy are high. Even the slight­est devi­a­tions in the inter­nal or exter­nal diam­e­ter can alter flow char­ac­ter­is­tics and thus affect measurement results. That is why we man­u­fac­ture our precision tubes to the tight­est tolerances and with con­sis­tent­ly repro­ducible quality. Typ­i­cal diameters range from a few mil­lime­tres down to the capillary range. What mat­ters here is not only dimensional accu­ra­cy, but also the sur­face quality on the inside of the tubes. This ensures that flu­ids flow even­ly and that mea­sured val­ues remain sta­ble, even dur­ing dynam­ic processes.

Materials for long-term durability

In addi­tion to geom­e­try, the mate­r­i­al plays a cen­tral role. At ETHEN Rohre, we rely on high-quality stainless steels and spe­cialised alloys that are both cor­ro­sion-resis­tant and mechan­i­cal­ly robust. Our precision tubes for sen­sor tech­nol­o­gy are used, amongst oth­er things, in injec­tion sys­tems, pres­sure measurement appli­ca­tions and in com­po­nents for exhaust and emis­sion con­trol. In mon­i­tor­ing and test­ing sys­tems too, for exam­ple in indus­tri­al or safe­ty-crit­i­cal appli­ca­tions, tubes must with­stand extreme con­di­tions. Tem­per­a­ture fluc­tu­a­tions, pres­sure spikes and vibra­tions are a dai­ly occur­rence here. Our solu­tions are designed to cope with these stress­es reliably and durably.

Expe­ri­ence that makes all the difference

At ETHEN Rohre, precision tubes are more than just a prod­uct. They are a key component of func­tion­ing sys­tems. With our under­stand­ing of appli­ca­tions, our manufacturing exper­tise and our com­mit­ment to quality, we help our cus­tomers design their sen­sor and mon­i­tor­ing sys­tems to be both safe and efficient.

Because, ulti­mate­ly, every detail counts. And that is pre­cise­ly where our strength lies.

When every dimen­sion counts. Capillary and precision tubes from ETHEN

Precision tubes for indus­tri­al appli­ca­tions form the foun­da­tion for safe and sta­ble process­es across a wide range of tech­ni­cal appli­ca­tions. There­fore, ETHEN devel­ops and man­u­fac­tures solu­tions that stand out for their excep­tion­al precision, tight tolerances, and reli­able materials. As a result, cus­tomers ben­e­fit from com­po­nents that per­form con­sis­tent­ly, even under demand­ing conditions.

Appli­ca­tions that demand trust

In instru­men­ta­tion, absolute reli­a­bil­i­ty is essential. Tubes must oper­ate with last­ing sta­bil­i­ty, even under crit­i­cal con­di­tions. In hydraulic sys­tems, the focus is on resilience and dura­bil­i­ty. Pres­sure, move­ment, and fluc­tu­at­ing loads require solu­tions that fit pre­cise­ly. In high-pres­sure appli­ca­tions, every dimen­sion mat­ters. Wall thick­ness and diam­e­ter must be pre­cise­ly matched to the mil­lime­ter. Added to this are spe­cial­ized fields of appli­ca­tion with spe­cif­ic require­ments. In med­ical tech­nol­o­gy, the tubes are used as can­nu­las; in measurement and con­trol tech­nol­o­gy, as pyrom­e­ter tubes. For high tem­per­a­tures or aggres­sive atmos­pheres, ETHEN man­u­fac­tures pro­tec­tive tubes from durable alloys. They are robust, durable, and reli­able in use.

Dimen­sions and Tolerances That Fit

The foun­da­tion for this is a manufacturing process designed for precision. Capillary and precision tubes are produced with out­er diameters rang­ing from 0.7 to 19.05 mil­lime­ters and wall thick­ness­es from 0.1 to 2.50 mil­lime­ters. Tight tolerances ensure a pre­cise fit. The stan­dard tolerances are ±0.05 mil­lime­ters for the out­er diam­e­ter and ±10 per­cent for the wall thick­ness. These are sup­ple­ment­ed by spec­i­fi­ca­tions in accor­dance with DIN EN ISO 1127 D4/​T4. If the appli­ca­tion requires it, tighter tolerances can also be achieved.

Lengths and Fur­ther Processing

Anoth­er advan­tage lies in the lengths. ETHEN man­u­fac­tures tubes up to 6,400 mil­lime­ters and cuts them pre­cise­ly to the desired length. The result is accu­rate to the mil­lime­ter and repro­ducible. Even the small­est spec­i­fi­ca­tions can be reliably fulfilled.
In addi­tion, our own tubes are used to pro­duce pre­cise sleeves start­ing at 2 mil­lime­ters in length, with exact diameters and a low-burr sur­face. Man­u­fac­tured in var­i­ous materials, they are opti­mal­ly designed for safe fur­ther pro­cess­ing.

Materials that make the difference

The mate­r­i­al is a deci­sive fac­tor. ETHEN man­u­fac­tures capillary and precision tubes exact­ly to cus­tomer spec­i­fi­ca­tions, tai­lored pre­cise­ly to the appli­ca­tion and indus­try. In addi­tion to stainless steel and tita­ni­um, nick­el alloys are used, which are char­ac­ter­ized by high cor­ro­sion resis­tance, tem­per­a­ture resis­tance, and good work­a­bil­i­ty. ETHEN brings decades of expe­ri­ence to the field of tita­ni­um in par­tic­u­lar. A glob­al net­work ensures mate­r­i­al avail­abil­i­ty. At the same time, close coop­er­a­tion with Euro­pean man­u­fac­tur­ers ensures sta­ble sup­ply chains. Pro­duc­tion takes place on our own tube draw­ing machines. Made in Germany, pre­cise, test­ed, and reliable.
Even small quan­ti­ties can be flex­i­bly accom­mo­dat­ed. Test orders and sam­ples pro­vide plan­ning secu­ri­ty and build trust.
For special require­ments, ETHEN also process­es spe­cial­ty materials and high-alloy materials. We work with our cus­tomers to make these selec­tions in an open, trans­par­ent, and solu­tion-ori­ent­ed man­ner. This results in solu­tions that are tech­ni­cal­ly sound and stand up to the rig­ors of every­day use.

At home in many indus­tries. Includ­ing yours.

Take a look at the ETHEN stock list and find the right solu­tion for your appli­ca­tion. Or con­tact us directly.

More ser­vices for precision tub­ing. ETHEN Tub­ing Plus.

The Capillary and precision tub­ing service places the high­est demands on materials, work­man­ship, and dimensional accu­ra­cy. At the same time, new chal­lenges con­stant­ly arise in every­day indus­tri­al oper­a­tions. Dam­aged tub­ing in stock. Additional test­ing for spe­cif­ic standards. Adap­ta­tions for new appli­ca­tions. With ETHEN Tub­ing Plus, ETHEN bun­dles its ser­vices specif­i­cal­ly for this pur­pose. The con­cept com­bines manufacturer exper­tise with a net­work of spe­cial­ized part­ners. For cus­tomers, this means: a sin­gle point of con­tact, clear process­es, and solu­tions from a sin­gle source.

Sup­port for repair and refurbishment

Dam­aged or deformed tubes do not nec­es­sar­i­ly have to be replaced. Often, they can be restored to work­ing con­di­tion. ETHEN employ­ees inspect, straight­en, clean, and pol­ish the pipes. They then ensure secure pack­ag­ing and reli­able trans­port. This step is par­tic­u­lar­ly worth­while for high-quality alloys. Mate­r­i­al is pre­served. Costs remain predictable.

Fin­ish­ing, Test­ing, and Customization

Many appli­ca­tions place special demands on capillary and precision tub­ing service. ETHEN Tub­ing Plus sup­ports cus­tomers with these additional pro­cess­ing steps. The team coor­di­nates fin­ish­ing process­es, arranges test­ing at spe­cial­ized lab­o­ra­to­ries, and pro­vides all nec­es­sary cer­tifi­cates. Documentation and logis­tics are also part of the service. ETHEN also pro­vides sup­port for tech­ni­cal mod­i­fi­ca­tions. These include heat treat­ments, draw­ing process­es, and mechan­i­cal machin­ing steps such as saw­ing, pol­ish­ing, or straight­en­ing. Dimensional checks and visu­al inspec­tions ensure quality.

Four Key Services

ETHEN Tub­ing Plus orga­nizes its ser­vices into several clear­ly defined areas. Con­tract anneal­ing is a key component. Through tar­get­ed heat treat­ment, employ­ees alter the met­al­lur­gi­cal prop­er­ties of the tubes. Knowl­edge of alloys and process con­trol is cru­cial here. In con­tract straight­en­ing, they restore warped tubes to their orig­i­nal shape. This is made pos­si­ble by spe­cial­ly devel­oped machin­ery and the employ­ees’ expe­ri­ence in work­ing with special alloys. Mate­r­i­al analy­sis test­ing ensures mate­r­i­al safe­ty. It quick­ly and non-destruc­tive­ly deter­mines the chem­i­cal com­po­si­tion. This helps cus­tomers avoid cost­ly mis­takes caused by using the wrong materials. In addi­tion, ETHEN offers tube draw­ing ser­vices for cus­tomer-sup­plied materials. This is par­tic­u­lar­ly important for sensitive alloys. Mate­r­i­al knowl­edge remains pro­tect­ed, yet pro­cess­ing is pre­cise and reliable.

A part­ner who thinks ahead

ETHEN Tub­ing Plus offers more than just indi­vid­ual ser­vices. We sup­port our cus­tomers through­out the entire process—from tech­ni­cal con­sult­ing to reli­able logistics.
Precision. Reli­a­bil­i­ty. Expe­ri­ence. You can count on us.

Sta­bil­i­ty that cre­ates secu­ri­ty – even in uncer­tain times

Sup­ply chain prob­lems are cur­rent­ly con­sid­ered the biggest chal­lenge in mechan­i­cal engi­neer­ing. Almost every com­pa­ny is feel­ing the effects of glob­al dis­rup­tions, rang­ing from lim­it­ed avail­abil­i­ty of raw materials to inter­rupt­ed trans­port routes. Split, glob­al­ly dis­trib­uted val­ue chains are par­tic­u­lar­ly vul­ner­a­ble. But cen­tral­ized pro­duc­tion mod­els also come under pres­sure when depen­den­cies become too great.
This mar­ket real­i­ty shows one thing above all: sta­bil­i­ty does not hap­pen by chance. It is the result of clear strate­gic decisions.

EU-based pro­cure­ment with foresight

At ETHEN Rohre, we there­fore delib­er­ate­ly focus on pre­dom­i­nant­ly EU-based pro­cure­ment. Short, trans­par­ent deliv­ery routes reduce com­plex­i­ty and make process­es con­trol­lable. Instead of glob­al­ly frag­ment­ed val­ue chains, we rely on long-term, sta­ble part­ner­ships with­in Europe. This cre­ates reli­a­bil­i­ty, both in terms of mate­r­i­al avail­abil­i­ty and quality. An essential part of our strat­e­gy is for­ward-look­ing mate­r­i­al pro­cure­ment. We pur­chase materials with a long-term hori­zon and secure sta­ble sup­ply chains instead of react­ing to mar­ket move­ments in the short term. In this way, we cre­ate resilient struc­tures that can with­stand even dynam­ic mar­ket move­ments. Pre­dictable work­flows, sta­ble process­es, and clear­ly defined respon­si­bil­i­ties form the foun­da­tion for this.

Our own stor­age capac­i­ties as a strate­gic buffer

We also oper­ate our own ware­house as a strate­gic buffer. These capac­i­ties enable us to cush­ion fluc­tu­a­tions, bridge bot­tle­necks, and ensure deliv­ery capa­bil­i­ty even in tense mar­ket phas­es. While many com­pa­nies are slowed down by glob­al depen­den­cies, we remain capa­ble of acting.

Inde­pen­dence as an eco­nom­ic strength

As an inde­pen­dent, own­er-man­aged com­pa­ny, we are not depen­dent on any cor­po­rate group. Deci­sions are made where the respon­si­bil­i­ty lies. Quick­ly, bind­ing­ly, and with a clear focus on the essentials.

When adjust­ments in pro­cure­ment are nec­es­sary, when process­es need to be opti­mized or pri­or­i­ties reset, we act con­sis­tent­ly. This deci­sion-mak­ing strength is a cen­tral component of our eco­nom­ic stability.

In recent years, we have con­sis­tent­ly sharp­ened our posi­tion­ing and stream­lined process­es in a tar­get­ed man­ner. Instead of react­ing impul­sive­ly to crises, we have strength­ened our struc­tures in a sus­tain­able man­ner. ETHEN is eco­nom­i­cal­ly sound, and that is pre­cise­ly what forms the basis for long-term partnerships.

Reli­a­bil­i­ty for your projects

This gives our cus­tomers con­crete secu­ri­ty. Reli­able deliv­er­ies, sta­ble process­es, and a part­ner who stays the course even under demand­ing con­di­tions. When we as a com­pa­ny are strong, inde­pen­dent, and eco­nom­i­cal­ly sound, this has a direct impact on your projects. Our claim is clear. Take respon­si­bil­i­ty. Make pre­cise deci­sions. Deliv­er reliably. So that you can rely on us at all times.

Quality at ETHEN ROHRE is a con­tin­u­ous responsibility

For special require­ments, we also use exter­nal, inde­pen­dent test­ing lab­o­ra­to­ries and offer additional test­ing and documentation ser­vices. These can also be booked indi­vid­u­al­ly as required, for exam­ple of this is the reg­u­lar refresh­er train­ing course on X‑ray flu­o­res­cence analy­sis (XRF), which our radi­a­tion pro­tec­tion offi­cer Tobias Kirch renewed in Jan­u­ary 2026 togeth­er with Andreas Gilman, test super­vi­sor at ETHEN ROHRE. This train­ing, which is manda­to­ry every five years, ensures that the use of XRF tech­nol­o­gy, par­tic­u­lar­ly with regard to radi­a­tion pro­tec­tion and mix-up checks, is always up to date. In this way, we ensure that mod­ern test­ing meth­ods are used in a tech­ni­cal­ly sound and respon­si­ble man­ner at our plant in Aachen.

These train­ing cours­es are part of a com­pre­hen­sive under­stand­ing of quality that goes beyond mere com­pli­ance with standards at ETHEN ROHRE. We man­u­fac­ture our capillary and precision tubes to tight tolerances and rec­og­nized quality standards. This is based on a pro­duc­tion process devel­oped in-house, which has been con­tin­u­ous­ly refined for more than five decades and is based on our own tube draw­ing machines. The expe­ri­ence of our high­ly qual­i­fied spe­cial­ists is an essential part of this and enables tolerances that exceed stan­dard require­ments on request.

Our quality standards are backed up by rec­og­nized cer­ti­fi­ca­tions. These include cer­ti­fi­ca­tion of our quality man­age­ment sys­tem in accor­dance with DIN EN ISO 9001:2015, which stands for clear­ly defined, doc­u­ment­ed, and ver­i­fi­able process­es along the entire val­ue chain. In addi­tion, we are cer­ti­fied accord­ing to the Pres­sure Equip­ment Direc­tive 2014/​68/​EU. This ensures that our pipes are safe­ly designed, man­u­fac­tured, and test­ed for pres­sure appli­ca­tions and offers our cus­tomers legal and tech­ni­cal secu­ri­ty in demand­ing applications.

For special require­ments, we also use exter­nal, inde­pen­dent test­ing lab­o­ra­to­ries and offer additional test­ing and documentation ser­vices. These can also be booked indi­vid­u­al­ly as required, for exam­ple when plac­ing orders from our stock list. The selec­tion of additional ser­vices is always sub­ject to a tech­ni­cal review, dur­ing which we pro­vide our cus­tomers with advice and support.

Option­al test­ing and cer­ti­fi­ca­tion services

- Inter­gran­u­lar cor­ro­sion test (IK test accord­ing to DIN EN ISO 3651–2, method A or C): Destruc­tive test­ing to eval­u­ate the resis­tance of materials to defined cor­ro­sive media.

- Eddy cur­rent test­ing (DIN EN ISO 10893–1 /​ DIN EN ISO 10893–2): Auto­mat­ed test­ing of seam­less and weld­ed steel pipes (except sub­merged arc weld­ed pipes) to detect imperfections.

- Hot ten­sile test: Destruc­tive mate­r­i­al test to deter­mine mechan­i­cal char­ac­ter­is­tics such as yield strength, ten­sile strength, elon­ga­tion at break, and reduc­tion of area at ele­vat­ed temperatures.

- Ultra­son­ic test­ing (DIN EN ISO 10893–10): Auto­mat­ed ultra­son­ic test­ing of seam­less and weld­ed steel pipes (except sub­merged arc weld­ed pipes) to detect lon­gi­tu­di­nal and/​or trans­verse defects.

- Hard­ness test­ing (based on NACE MR0175 /​ NACE MR0103): Test­ing to eval­u­ate mate­r­i­al hard­ness for appli­ca­tions in cor­ro­sive envi­ron­ments, such as oil and gas pro­duc­tion or refineries.

- Grain size deter­mi­na­tion: Mate­r­i­al test­ing to ana­lyze the size and dis­tri­b­u­tion of crys­tal grains in the metal­lic structure.

- Fac­to­ry cer­tifi­cate 2.2 accord­ing to EN 10204:2004: Manufacturer’s cer­tifi­cate con­firm­ing that the deliv­ered prod­ucts com­ply with the agreed requirements.

- Fac­to­ry cer­tifi­cate 3.1 accord­ing to EN 10204:2004: Test cer­tifi­cate with spe­cif­ic test results to con­firm the order requirements.

- Accep­tance test cer­tifi­cate 3.2 (TÜV) accord­ing to EN 10204:2004: Test cer­tifi­cate with additional accep­tance by an inde­pen­dent test­ing lab­o­ra­to­ry to ensure the agreed mate­r­i­al specifications.

This mod­u­lar test­ing service enables our cus­tomers to obtain exact­ly the cer­tifi­cates and quality char­ac­ter­is­tics required for their respec­tive appli­ca­tions. In this way, we com­bine flex­i­bil­i­ty in pro­cure­ment with the secu­ri­ty of test­ed quality and under­stand quality assur­ance at ETHEN ROHRE as what it is for us: a con­tin­u­ous process.

A review of 2025

2025 has been a year shaped by precision, respon­si­bil­i­ty and strong partnerships.

From expand­ing our activ­i­ties in the defence sec­tor to strength­en­ing our lead­er­ship team and devel­op­ing our inter­nal process­es, this year has shown how much can be achieved when expe­ri­ence and com­mit­ment come togeth­er. Our capillary and precision tubes have once again proven their val­ue in med­ical engi­neer­ing, ener­gy tech­nol­o­gy, mechan­i­cal engi­neer­ing and increas­ing­ly in defence appli­ca­tions – espe­cial­ly in sen­sor sys­tems, where reli­a­bil­i­ty and resilience are crucial.

At the same time, we have invest­ed in our teams and structures

With the launch of the Coach2Change pro­gramme for our pro­duc­tion lead­er­ship, with a suc­cess­ful­ly com­plet­ed resource-effi­cien­cy project sup­port­ed by EFRE and with important impuls­es from exchanges on dig­i­tal transformation.

Mile­stones that matter

The appoint­ment of Kirsten Von­der­ha­gen as autho­rized sig­na­to­ry, 40 years of ded­i­ca­tion from a val­ued col­league in pro­duc­tion, and the steady growth of our com­mu­ni­ty – includ­ing reach­ing more than 1,000 fol­low­ers on LinkedIn!

Behind every tube stands a team.

A team of ded­i­cat­ed employ­ees who think ahead, take respon­si­bil­i­ty and turn met­al into mil­lime­tre-per­fect precision. Their work shapes ETHEN ROHRE every sin­gle day.And of course: None of this would be pos­si­ble with­out you – our cus­tomers and part­ners.Your trust gives us the con­fi­dence to work with precision, trans­paren­cy and reli­a­bil­i­ty, year after year.

We wish you a peace­ful hol­i­day sea­son and a strong start to the new year.

Please note: We will be on hol­i­day from Decem­ber 23, 2025 to Jan­u­ary 04,2026.In the new year we return recharged and ready to sup­port you with the same com­mit­ment and precision you rely on.