Stainless Steel Welded Pipe
OD 12.7 – 325 mm · ASTM A312 / A554 · EN 10217-7
Welded stainless steel pipe for fluid service, 12.7–325 mm outside diameter and 0.6–4.0 mm wall, supplied in 6 m lengths or cut to order. Every length is 100% hydrostatically or eddy-current tested, delivered solution annealed, and supplied with an EN 10204 3.1 mill test certificate.
STANDARD
ASTM A312 · EN 10217-7 · JIS G3459
OUTSIDE DIAMETER
12.7 – 325 mm
WALL THICKNESS
0.6 – 4.0 mm
GRADES
304 · 304L · 316 · 316L
Specifications
Welded and seamless austenitic pipe for fluid transport, structural and sanitary service.
| Parameter | Specification |
|---|---|
| Standard | ASTM A312 / EN 10217-7 / JIS G3459 |
| Grades | 304 (S30400 / 1.4301) · 304L (S30403 / 1.4307) · 316 (S31600 / 1.4401) · 316L (S31603 / 1.4404) |
| Outside diameter | 12.7 mm – 325 mm |
| Wall thickness | 0.6 mm – 4.0 mm |
| Length | 6 m, or cut to order |
| Surface | Pickled / polished / industrial (2B) |
| Delivery condition | Solution annealed |
| Testing | Hydrostatic test or eddy-current test (100%) |
| Mill certificate | EN 10204 3.1 MTC |
| Applications | Petrochemical, food and pharmaceutical, building water supply, general industrial fluid service |
MTC
EN 10204 3.1 mill test certificate with every shipment
Chemical composition and mechanical properties are reported with measured values, with full heat-number traceability back to the original coil certificate.
Frequently Asked Questions
What is the difference between 304 and 316L stainless pipe?
304 is the standard austenitic grade for potable water, HVAC and food-grade service. 316L adds molybdenum for superior chloride and pitting resistance — recommended for marine, coastal and chemical-process duty.
Do you supply welded or seamless pipe?
Both. We run our own welded tube lines and supply seamless pipe to ASTM A312 / EN 10216-5 on order. Welded gives faster lead times and lower cost; seamless is chosen for higher-pressure and critical service.
Which standards do your pipes meet?
ASTM A312 (seamless and welded austenitic), ASTM A554 (welded ornamental), EN 10217-7 (welded) and EN 10216-5 (seamless).
Can you produce custom outside diameters and wall thicknesses?
Yes — we quote against your nominal size and wall schedule, and can work to a drawn tolerance on request. Send the drawing or specification and we confirm within one working day.
How is pipe packed for export?
Bundled, end-capped, wrapped in woven or wooden crating and container-loaded with proper lashing. End protection keeps the bore clean on arrival.
Request a Quote
A formal quotation lands in your inbox within 12 working hours.
- Quotation with dimension table and material certificates
- MOQ, lead time, packing and Incoterms 2020
- Free samples of standard sizes (courier collect)
- EN 10204 3.1 MTC with every shipment