Home / All / Stainless Steel / Stainless Steel Pipe (Round, Welded & Seamless, ASTM A312 / A213, Sch 5S-Sch 80)
Stainless Steel Pipe (Round, Welded & Seamless, ASTM A312 / A213, Sch 5S-Sch 80)
Round stainless steel pipe in 304/316L, welded & seamless, ASTM A312/A213. Schedule 5S-80. Mill, polished, BA.
| Share | |
|---|---|
| Categories | Stainless Steel |
| Brand | MESCO: Trusted Steel Wholesale Manufacturer |
| Model | MESCO-SS-PIPE |
| Material | Stainless Steel (Austenitic) |
| Grade | ASTM A312 / A213 / A249 — 304, 304L, 316, 316L, 321, 310S |
| Form | Round Pipe |
| OD | 6 – 630 mm |
| Wall | 0.5 – 30 mm (Sch 5S – Sch 80) |
| Length | ≤ 12 m (or cut-to-length) |
| Finish | Mill / Pickled / Polished (180#-600#) / Bright Annealed |
| Tolerance | OD ±0.5% per ASTM A312 |
Detail Information
Stainless Steel Pipe (Round, Welded & Seamless, ASTM A312 / A213, Sch 5S-Sch 80)
Industrial-grade round stainless steel pipe — welded and seamless, ASTM A312 / A213 compliant, schedule 5S to 80, with mill / polished / BA finish options.
Request a QuoteMESCO supplies round stainless steel pipe in 304, 304L, 316, 316L, 321 and 310S grades, in both welded (A312 / A249) and seamless (A312 / A213) forms. Outside diameter covers 6 to 630 mm with wall thickness 0.5 to 30 mm across schedule 5S to 80. Standard length is 6 m, with custom cut-to-length, end forming, polishing and protective capping available for OEM and EPC projects.
Specifications & Capabilities
Welded vs Seamless — How to Choose
- Welded (A312 / A249) — lower cost, faster delivery, OD up to 630 mm
- Seamless (A312 / A213) — higher pressure rating, OD up to 426 mm
- Welded is suitable for low-to-medium pressure and structural use
- Seamless is preferred for high pressure, high temperature and corrosive service
ASTM Standards & Grades
- ASTM A312 — standard seamless and welded austenitic pipe
- ASTM A213 — seamless ferritic and austenitic boiler tube
- ASTM A249 — welded austenitic boiler tube
- Grades 304 / 304L for general service; 316 / 316L for chloride resistance; 321 / 310S for elevated temperature
Size, Schedule & Pressure
- OD 6 – 630 mm in standard sizes
- Wall 0.5 – 30 mm covering Schedule 5S, 10S, 40S, 80S
- Higher schedule = thicker wall = higher working pressure
- Custom OD / wall on request for OEM and skid fabrication
Typical End Connections
- Plain end (PE) — for butt-weld and flange connections
- Threaded end (TE) — NPT / BSP per ASME B1.20.1
- Beveled end (BE) — 30° standard for welding
- Flanged, grooved and quick-coupling ends available on request
Typical Grade & Size Range
| Parameter | Value |
|---|---|
| Material | Stainless Steel (304 / 304L / 316 / 316L / 430) |
| Standard | ASTM A240 / A480 / A312 / A213 (per product family) |
| Finish | 2B / BA / No.4 / HL / 8K / Mill / Polished |
| Thickness / OD | Custom range per family (see attributes table) |
| MOQ | 1 ton (or as agreed) |
Frequently Asked Questions
What is the difference between Schedule 40 and Schedule 80?
Schedule 80 has a thicker wall than Schedule 40 at the same nominal size. For example, a 2" Sch 40 pipe has a 2.1 mm wall, while Sch 80 has 3.9 mm. Sch 80 is used for higher pressure, mechanical strength and corrosive service where a thicker wall adds safety margin.
Should I use 304 or 316L for chemical service?
316L is recommended for chloride-containing media, acids (sulfuric, phosphoric), and marine environments due to its 2-3% Mo content that resists pitting. 304 is suitable for most organic chemicals, food and general process water but may pit in halogen-rich service.
Do you supply polished stainless pipes?
Yes. We offer mill, 180-grit, 240-grit, 320-grit, 400-grit and 600-grit polished finishes, plus bright annealed (BA) for sanitary / pharmaceutical applications. Polished pipes are individually sleeved to protect the surface during transport.
What is the standard pipe length?
Standard mill length is 6 meters. We can also supply cut-to-length from 0.5 m to 12 m, with optional end forming (threading, beveling, flanging, grooving).
Why Choose MESCO
Factory DirectIntegrated steel mill with 18+ years export experience
Certified QualityISO 9001, ASTM / EN / JIS compliant, full MTC provided
Global LogisticsContainer, break-bulk and LCL options with CIF / FOB terms
Custom ServiceSlitting, cutting, polishing, end forming & OEM packaging
Review
- 加载中···
Related Products
Please send your message to us
- Phone
- *Title
- *Content
