Stainless Steel Pipe – Seamless & Welded | ASTM A312, A213, EN 10216-2
Stainless steel pipes are used for transporting liquids and gasses in a wide range of industries including mining, oil, natural gas, automotive, and aviation.
Stainless Steel Pipe – Seamless & Welded | ASTM A312, A213, EN 10216-2
Grades 304/L, 316/L, 321, 347 – For Chemical, Food, Marine & Pharmaceutical Industries
Stainless steel pipe offers exceptional corrosion resistance, strength, and hygiene for demanding industrial applications. Available in seamless stainless pipe and welded stainless pipe forms, stainless steel pipe is essential for chemical processing, food production, marine environments, and pharmaceutical facilities. As a leading stainless steel pipe supplier, we provide full traceability and certification.
Select Your Stainless Steel Pipe
| Product | Description | Key Features |
|---|---|---|
| → ASTM A312 Seamless | Seamless stainless pipe – high-pressure, corrosive service | 304/L, 316/L, 321, 347; NPS ⅛"–24" |
| → ASTM A312 Welded | Welded stainless pipe – cost-effective, general service | 304/L, 316/L; NPS ½"–48" |
| → Large Diameter Welded | Large diameter stainless pipe – up to 48", industrial | 304/L, 316/L; ASTM A312/A358 |
| → Stainless Steel Fittings | Buttweld fittings – elbows, tees, reducers | ASTM A403, MSS SP-43 |
For all industrial stainless pipe requirements, our range covers seamless stainless pipe and welded stainless pipe options. ASTM A312 pipe is our most commonly requested specification.
Applicable Standards
| Standard | Description |
|---|---|
| ASTM A312 | Seamless and welded austenitic stainless steel pipe – general corrosive service |
| ASTM A358 | Electric-fusion-welded stainless steel pipe – heavy wall, large diameter |
| ASTM A213 | Seamless boiler, superheater, and heat exchanger tubes |
| EN 10216-2 | European standard for seamless pressure pipe |
| EN 10217-7 | European standard for welded stainless steel pipe |
| JIS G3459 | Japanese standard for stainless steel pipe |
| AWWA C220 | Stainless steel pressure pipe for water systems |
ASTM A312 pipe is the primary specification for stainless steel pipe in industrial applications.
Dimensional Capabilities
| Type | Outside Diameter | Wall Thickness | Length |
|---|---|---|---|
| Seamless | NPS ⅛" – 24" (10.3mm – 610mm) | SCH 5S – 160 | 6m – 12m |
| Welded | NPS ½" – 48" (21.3mm – 1219mm) | SCH 5S – 80S | 6m – 18m |
| Large Diameter Welded | 14" – 48" (355mm – 1219mm) | up to 30mm | 6m – 12m |
*Heavier walls per ASTM A358 available upon request. Seamless stainless pipe is preferred for high-pressure applications, while welded stainless pipe offers cost advantages for larger diameters. For industrial stainless pipe, we supply both types based on your requirements.*
Quality Assurance
✅ EN 10204 3.1 Mill Test Report – heat-specific chemistry, tensile, hardness for all stainless steel pipe
✅ 100% hydrostatic test – pressure per applicable standard
✅ PMI (Positive Material Identification) – 100% on critical grades, including 316L stainless pipe
✅ Solution annealing – for all austenitic grades
✅ NDT – Ultrasonic, eddy current, X-ray upon request
✅ Third-party inspection – SGS, BV, LR, DNV, TÜV – no surcharge
For every stainless steel pipe order, we provide full material traceability. Our seamless stainless pipe and welded stainless pipe meet the highest quality standards.
Why Choose Shenlong for Stainless Steel Pipe?
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Multi-standard capability – ASTM, EN, JIS, AWWA for global projects
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Full grade range – 304/L, 316/L, 321, 347, Duplex
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Complete size coverage – ⅛" to 48", seamless and welded
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Material traceability – EN 10204 3.1 standard for every stainless steel pipe order
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Third-party inspection at our cost – SGS, BV, LR accepted
As a trusted stainless steel pipe supplier, we deliver quality seamless stainless pipe and welded stainless pipe worldwide.
Continue to Detailed Product Pages
| → ASTM A312 Seamless | High-pressure, corrosive service |
| → ASTM A312 Welded | Cost-effective, general service |
| → Large Diameter Welded | Up to 48", industrial applications |
| → Stainless Steel Fittings | Elbows, tees, reducers |
Request for Quotation
Send your inquiry with grade, type (seamless/welded), size (OD × WT × length), quantity, and destination port to info@pipesl.com.
Related products
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● Delivery: within 10-15 days or considering the quantity
● Transport: By bulk or Containers;
● Supply ability: 3000 metric tons/ month;
● Payment terms L/C, T/T;
● It can pack by container or bulk vessel.
● Standard export seaworthy package, it use steel belt with bundle according product’s size. -
● Delivery: within 10-15 days or considering the quantity
● Transport: By bulk or Containers;
● Supply ability: 3000 metric tons/ month;
● Payment terms L/C, T/T;
● It can pack by container or bulk vessel.
● Standard export seaworthy package, it use steel belt with bundle according product’s size.
● We can make it as your requirement. -
● Delivery: within 10-15 days or considering the quantity
● Transport: By bulk or Containers;
● Supply ability: 3000 metric tons/ month;
● Payment terms L/C, T/T;
● It can pack by container or bulk vessel.
● Standard export seaworthy package, it use steel belt with bundle according product’s size.
● We can make it as your requirement. -
304 stainless steel pipe is the most common type of steel pipe across the globe for a number of its characteristics. 304 stainless steel is primarily composed of iron, chromium and nickel. This combination gives rise to outstanding oxidation resistance and corrosion resistance. 304 stainless steel is a versatile stainless steel material with better anti-rust properties than 200 series stainless steel materials. It also outperforms them in high temperature resistance. 304 stainless steel pipe features a smooth surface, high plasticity, toughness and mechanical strength, and is very resistant to corrosion by acids, alkaline gases, solutions and other media. 304 stainless steel pipes are widely used in food processing equipment, building materials, automobile parts and other fields for its versatility and relatively low cost.
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316L stainless steel has a lower proportion of carbon in its composition. To qualify as 316L stainless steel, the amount of carbon cannot exceed 0.03%.
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