Dural is our exclusive tube and pipe brand: stainless steel tube to ASTM A213/A269, stainless steel pipe to ASTM A312, and hydraulic steel tube to DIN 2391 and DIN 2445.
Every length is marked along its own body — so what is on the paperwork is on the steel. And because Dural is exclusive to us, the same grade, standard and marking arrive on every re-order.
Send OD × wall (tube) or NB × schedule (pipe), grade and quantity — a quote comes back within 2 working hours.
| Brand | Dural |
|---|---|
| Status | Exclusive to our group |
| Product lines | Stainless steel tube · stainless steel pipe · hydraulic steel tube |
| Grades | TP316 / TP316L (stainless) · E355 / E235 (hydraulic) |
| Standards | ASTM A213 · A269 · A312 · DIN 2391/C · DIN 2445/2 |
| Standard length | 6 metres per length |
| Marking | OD · wall · grade · standard · heat number · maker — repeating along the length |
| Ready stock | Singapore & Malaysia warehouses · out within 24 hours |
ASTM A213 / A269 · TP316 & TP316L · 4–60 mm OD — instrument lines, sensor lines and general corrosion-resisting service.
ASTM A312 in dual grade SS316/316L — seamless and welded, for high temperature and general corrosive service.
DIN 2391/C & DIN 2445/2 · E355 / E235 · cold drawn seamless — the tight OD tolerance a compression fitting needs to seal at the ferrule.
| How to order | Format |
|---|---|
| Tube | OD × wall thickness, grade, standard and quantity — for example: 12 mm × 1.5 mm, TP316L, A269, 24 lengths. |
| Pipe | Nominal bore × schedule, grade and standard — for example: 2″ Sch 40S, 316/316L, A312. |
| Hydraulic tube | OD × wall, grade E235 or E355, and the working pressure — we confirm the wall against the pressure before anything ships. |
Full dimension and pressure tables are in the catalogues, as printed. More catalogues in the catalogue library.
If your drawing gives an outer diameter and a wall thickness (say 12 × 1.5 mm), it is tube. If it gives a nominal bore and a schedule (say 2″ Sch 40S), it is pipe. They are not interchangeable.
Carbon. 316L is the low-carbon variant, specified where the joint will be welded — lower carbon resists sensitisation at the weld.
Traceability that survives cutting. The OD, wall, grade, standard, heat number and maker repeat along the tube, so a class surveyor or your QA can read the heat number off an offcut — no hunting for a bundle tag.
Pick on working pressure: E355 (ST52.4) is the stronger grade, E235 (ST37.4) the standard one. Send the working pressure and we confirm the wall for your size — details on the hydraulic steel tubes page.
It depends on the line, and the standard on the marking tells you: ASTM A213 is a seamless specification; A269 covers both seamless and welded; A312 pipe comes seamless or straight-seam welded; DIN 2391/2445 hydraulic steel tube is cold drawn seamless.
Not on your own authority — if a specification names A213, the tube must be certified to A213, because that is the boiler and heat-exchanger specification with its own test requirements. The standard is what fixes the tolerances and the testing, not just the size.
Yes — ask on the enquiry. The heat number marked on the length is what ties the steel to its certificate.
Yes — the standard length is 6 metres, held as ready stock in our regional warehouses in Singapore and Malaysia. Goods leave the warehouse within 24 hours of your PO, with the delivery schedule to your city confirmed in the quotation.
Send the specification in the format from the table above via WhatsApp ★ Google reviews ▶ YouTube channel or the contact form — a quote comes back within 2 working hours with price, stock position and delivery schedule.
See also hydraulic steel tubes, all tubes & pipes, all brands — or read this page in Bahasa Indonesia.
