The new quality brand for
premium anchor chains

Röttgers has been manufacturing quality chains for more than 100 years. However, 2021 marks a new milestone in our company history. We would like to present ROXMA, our own premium brand for quality anchor chains. Thanks to our many years of experience, we know that our customers need a 100% reliable chain. We assure you:

You can rely on ROXMA anchor chains.

Stainless steel ROXMA chains have reached new heights with regard to durability, tensile strength and corrosion resistance, and exceed all common standards by far.

What makes ROXMA better than the rest?


There are a large number of inferior anchor chains on the market.

How do I find the right chain? The price is a good indicator.

Cheap chains are usually of inferior quality and will most likely malfunction in rough seas, which means they are guaranteed to break. Unfortunately, even expensive chains often do not meet the quality expectations of their owners.

Our center of excellence for materials has been developing quality solutions for challenging customer requirements from the industry for some time now, and we have recently become a technological leader in the area of mechanical and plant engineering in the last few years as well.

Thanks to the combination of our technological know-how, 100 years of experience and startup mentality, we are now setting new standards at sea with ROXMA.

Which anchor chain is used for which purpose?


We produce our ROXMA anchor chains from high-quality European stainless steel for use in warmer waters.

We produce Grade 4 and Grade 7 galvanized anchor chains for use in colder waters.

Commitment to quality

Our ROXMA chains undergo rigorous quality control inspections in our in-house laboratory during every production run. This includes tensile strength testing and microscopic cross-sectional testing as well.

Furthermore, we are one of very few manufacturers of anchor chains with an in-house salt spray chamber, where we put our ROXMA anchor chains through continuous corrosion resistance testing under extreme conditions for several months at a time.

The results of in-depth comparative testing conducted on our ROXMA anchor chain and a cheap stainless steel chain produced in Asia are available for download in PDF form.

PDF herunterladen


Welding seam tears before the predetermined breaking point is reached


Welding seam remains intact; material breaks when severely overloaded

ROXMA chains break only when they are severely overloaded and stretched to the maximum.


The certificate of conformity confirms that our internal business structure and organization is in accordance with the international standard for quality management.

We are a manufacturer of stainless-steel/NIRO chains.

The H-seal (stamp) is a proof for the special quality of the chains.

Where can I purchase original ROXMA anchor chains?


We currently have a small, exclusive network of dealers, which is being continually expanded. At present, ROXMA anchor chains are available for purchase from:

• Marinetech Edelstahlhandel GmbH & Co. KG

Private individuals:
• Parasail
• Schulz-Hohenstein Soehne

We welcome inquiries from dealers, marinas and yacht builders. Please use our inquiry form for dealers or contact our sales staff directly for comprehensive advice.

If you as a yacht owner or skipper have the opportunity to install an anchor chain yourself, then please use the inquiry form as well.


Inquiry form


Data privacy

You can rely on ROXMA anchor chains.

The new brand for premium anchor chains.

ROXMAanchor chains are available
in dimensions from Ø3-18mm

ROXMA stainless steel anchor chains deliver a new level of durability, tensile strength and corrosion resistance and far exceed all commonly accepted standards. Due to the balanced microstructure of the duplex steel, ROXMA anchor chains deliver a strong combination of strength and corrosion resistance.
To ensure that they run cleanly in the winch, all ROXMA anchor chains are precisely calibrated to a tenth of a millimeter. To protect them against the rugged environment at sea, the chains receive a very extensive surface treatment process as standard. This guarantees the outstanding durability of ROXMA products.
Item no.
Item no.
Ø t b2 Similar
Breaking load
List price
Breaking load
List price
RXSD6L RXSD6LN 6 18,5 20 DIN 766 3000 kg 17,20 € 3850 kg 20,58 €
RXSD8L RXSD8LN 8 24 26 DIN 766 5300 kg 28,03 € 6700 kg 33,03 €
RXSD10L RXSD10LN 10 28 34 DIN 766 8500 kg 44,79 € 10800 kg 53,61 €
RXSD13L RXSD13LN 13 36 44 DIN 766 12500 kg 76,29 € 18000 kg 89,23 €
RXSD16L RXSD16LN 16 45 53 DIN 766 20000 kg 125,78 € 26000 kg 148,81 €
RXSI6L RXSI6LN 6 18 20,9 ISO 4565 3000 kg 17,59 € 3850 kg 21,17 €
RXSI8L RXSI8LN 8 24 27,8 ISO 4565 5300 kg 28,86 € 6700 kg 34,30 €
RXSI10L RXSI10LN 10 30 35 ISO 4565 8500 kg 43,86 € 10800 kg 52,43 €
RXSI12L RXSI12LN 12 36 42 ISO 4565 11300 kg 62,67 € 14000 kg 73,30 €
RXSI16L RXSI16LN 16 48 54 EN 818 20000 kg 125,78 € 26000 kg 148,81 €
Surcharge for electropolishing €2.90 per kg (not discountable). Other dimensions are available on request: Ø3-18mm
All of the stated prices are net and do not include the statutory rate of VAT.
No matter which material you select –
you can rely on ROXMA!

Hot dipped galvanized ROXMA anchor chains are ideal for use in colder waters. The anchor chains are made out of carefully selected chain steels and bent and welded using the latest machinery. We are thus able to ensure the highest production quality. ROXMA chains are then
quenched and tempered in a modern and fully automated multipurpose chamber furnace line. This targeted thermal treatment optimizes the mechanical properties of the chains. In the final stage, ROXMA anchor chains are given a clean and optimal galvanized coating.
Item no. Grade 40 Item no. Grade 70 Ø
t b2 Similar
Breaking load
Grade 40
List price
Grade 40
Breaking load
Grade 70
List price
Grade 70
RXGD640 RXGD670 6 18,5 20 DIN 766 2300 kg 6,88 € 3960 kg 8,05 €
RXGD840 RXGD870 8 24 26 DIN 766 4020 kg 9,82 € 7100 kg 11,50 €
RXGD1040 RXGD1070 10 28 34 DIN 766 6280 kg 16,25 € 11200 kg 18,75 €
RXGD1340 RXGD1370 13 36 44 DIN 766 10600 kg 26,25 € 19000 kg 30,71 €
RXGD1640 RXGD1670 16 45 53 DIN 766 16100 kg 39,02 € 28200 kg 45,64 €
RXGI640 RXGI670 6 18 20,9 ISO 4565 2300 kg 7,02 € 3960 kg 8,21 €
RXGI840 RXGI870 8 24 27,8 ISO 4565 4020 kg 10,11 € 7100 kg 11,82 €
RXGI1040 RXGI1070 10 30 35 ISO 4565 6280 kg 15,93 € 11200 kg 18,64 €
RXGI1240 RXGI1270 12 36 42 ISO 4565 9050 kg 20,80 € 16000 kg 24,34 €
RXGI1640 RXGI1670 16 48 54 EN 818 16100 kg 38,45 € 28200 kg 44,98 €
Other dimensions are available on request: Ø3-18mm
All of the stated prices are net and do not include the statutory rate of VAT

Social media partner wanted

You are planning a big expedition by boat? Maybe even a circumnavigation? And you need a new, unbreakable anchor chain that you can rely on even in stormy seas? If you are active in social media, have fans and followers and post on a regularl basis, then we should definitely get together.

We at Röttgers Ketten are looking for practicing partners who put our ROXMA anchor chain through its paces in a long-term test on all the world’s oceans and report on it. You post regularly photos and videos of your journey, and report occasionally where and how you anchor. As a thank you we will provide you with a ROXMA anchor chain suitable for your ship, which you can keep after the voyage of course.

Interested? Then apply with a short video and tell us why you absolutely need a stainless ROXMA anchor chain.

Sales Partner

Our distribution partner „Marinetech“ promotes in its current newsletter our ROXMA anchor chains made of Duplex stainless steel for warmer waters. You can read the newsletter online here.

At the boat show „Metstrade 21“ in Amsterdam from
16. – 18.11.2021 our anchor chains will also be presented live there at the Marinetech booth.

boot 2022

From January, 22 – 30 2022 the international trade fair „boot“ will take place again in Düsseldorf. ROXMA will be there for the first time as co-exhibitor -together with a partner- on an own booth. If you would like

„boot 22“ to visit us at the “boot 22” to get to know us and our anchor chains, please contact our product manager Leon Henschke We will gladly send you an entrance ticket.

A look behind the scenes of the most modern production line for anchor chains in Europe. Our strongest anchor chains are bent, welded, stamped and calibrated on these machines.

As far as we know, we are the only manufacturer who can also process duplex steel with a diameter of 16mm automatically and with consistently high quality.


Motorboot online

The magazine “Motorboot online” has published a technical feature concerning the special quality of ROXMA anchor chains and our production in Germany. The report (in german language) is linked here.

Find out more on social media

Videos on the production of and quality tests on ROXMA anchor chains are available in our media library. Testimonies from users will be added in the future.

If you would like to be kept up to date, then please subscribe to our YouTube channel, follow us on social media, or subscribe to our newsletter.

Röttgers Ketten GmbH & Co. KG
Untergrüner Straße 72 – 76
58644 Iserlohn

Fon +49 2374 9794-0 Fax +49 2374 9794-31 Mail