Shanxi Zhongcheng Metal Co., Ltd.
| Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) |
| Delivery Time | 15-25days |
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal |
| Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Supply Capacity | 10000tons |
| Supply Ability | 10000tons |
| Brand | Baosteel，TISCO |
| Country of Origin | MADE IN CHAINA |
| MOQ | 100kg |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 |
| Certification | EN 10204 Type 3.1 / 3.2 available |
| Brand Name | Baosteel，TISCO |
View Detail Information
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Product Specification
| Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) | Delivery Time | 15-25days |
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal | Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. | Supply Capacity | 10000tons |
| Supply Ability | 10000tons | Brand | Baosteel，TISCO |
| Country of Origin | MADE IN CHAINA | MOQ | 100kg |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available | Place of Origin | MADE IN CHAINA |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 | Certification | EN 10204 Type 3.1 / 3.2 available |
| Brand Name | Baosteel，TISCO | ||
| High Light | Stainless Steel Seamless Pipe TP316L ，Stainless Steel Seamless Pipe Welded ，TP304 Seamless SS Pipe | ||
ASTM A312 is the most widely recognized American standard specification for seamless, straight-seam welded, and heavily cold-worked stainless steel pipes intended for high-temperature and general corrosive service.
At [Your Company Name], we supply fully certified ASTM A312 stainless steel pipes in a comprehensive range of diameters, wall thicknesses, and grades. Whether your project requires seamless pipes for high-pressure applications or welded pipes for cost-efficiency, our inventory meets strict NACE MR0175 and ISO 9001 standards.
Key Target Applications: Chemical processing, oil & gas refineries, marine engineering, heat exchangers, and pharmaceutical lines.
| Parameter | Range / Details |
|---|---|
| Standard | ASTM A312 / ASME SA312 |
| Manufacturing Type | Seamless (SMLS) – no weld seam |
| Material Grades | TP304, TP304L, TP316, TP316L |
| Outer Diameter (OD) | 10.3mm – 609.6mm (1/8″ – 24″) |
| Wall Thickness (WT) | 0.2mm – 60mm (SCH 5S, 10S, 40S, 80S, 160, XXS) |
| Length | 5 – 12 meters, or custom cut |
| End Finish | Plain / Beveled / Threaded |
| Surface Condition | Annealed & pickled / Bright annealed / Passivated / Polished |
| Testing | Hydrostatic test, PMI, UT, Eddy current, Third-party (SGS/BV) |
| Certification | ISO 9001, MTC EN 10204 3.1, RoHS |
| Delivery Condition | Solution annealed, cold drawn or hot rolled |
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0–20.0 | 8.0–11.0 | — |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0–20.0 | 8.0–13.0 | — |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0–18.0 | 11.0–14.0 | 2.00–3.00 |
| TP316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
Key Advantage of TP316/316L: The addition of molybdenum (Mo) provides superior resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking, making it ideal for marine, chemical, and high-chloride environments.
| Grade | Tensile Strength (MPa) min | Yield Strength (MPa) min | Elongation % min |
|---|---|---|---|
| TP304 | 515 | 205 | 35 |
| TP304L | 485 | 170 | 35 |
| TP316 | 515 | 205 | 35 |
| TP316L | 485 | 170 | 35 |
Heat Treatment: Solution annealed at 1900°F (1040°C) minimum, followed by rapid cooling.
Service Temperature Range: Cryogenic to 870°C (depending on grade). TP304/316 is suitable for continuous service up to 800°C in oxidizing atmospheres.
| NPS (inch) | Positive Tolerance (in / mm) | Negative Tolerance (in / mm) |
|---|---|---|
| 1/8 – 1½ | +0.015" / 0.4mm | -0.031" / 0.8mm |
| >1½ – 4 | +0.031" / 0.8mm | -0.031" / 0.8mm |
| >4 – 8 | +0.062" / 1.6mm | -0.031" / 0.8mm |
| >8 – 18 | +0.093" / 2.4mm | -0.031" / 0.8mm |
| >18 – 26 | +0.125" / 3.2mm | -0.031" / 0.8mm |
| NPS | Condition | Positive Tolerance | Negative Tolerance |
|---|---|---|---|
| 1/8 – 2½ | All | +20.0% | -12.5% |
| 3 – 18 | t/D ≤ 5% | +22.5% | -12.5% |
| 3 – 18 | t/D > 5% | +15.0% | -12.5% |
| ≥20 | t/D ≤ 5% | +22.5% | -12.5% |
| ≥20 | t/D > 5% | +15.0% | -12.5% |
t/D = ratio of wall thickness to outside diameter
| Feature | Benefit |
|---|---|
| No weld seam | Eliminates weak points; uniform mechanical properties |
| Higher pressure rating | Suitable for high-pressure hydraulic and steam systems |
| Better fatigue resistance | Ideal for cyclic pressure and vibration applications |
| Superior corrosion resistance | No weld-affected zone susceptible to preferential attack |
| Wider temperature range | Performs reliably from cryogenic to high temperatures |
| Industry | Specific Uses | Recommended Grade |
|---|---|---|
| Oil & Gas | Downhole tubing, flow lines, offshore platforms | TP316 / 316L |
| Chemical Processing | Reactors, heat exchangers, transfer lines for acids/alkalis | TP316L |
| Power Generation | Boiler tubes, superheater lines, high-pressure steam | TP304H / TP316H |
| Marine Engineering | Seawater cooling lines, shipbuilding, and desalination plants | TP316 / 316L |
| Pharmaceutical & Biotech | High-purity systems, sanitary piping | TP304L / 316L (electropolished) |
| Hydrogen & Alternative Energy | High-pressure hydrogen transport, fuel cell systems | TP316 / 316L |
| Hydraulic & Instrumentation | Precision seamless tubing for control systems | TP304 / 316 |
| Finish | Description | Typical Application |
|---|---|---|
| Mill Finish (Annealed & Pickled) | Oxide scale removed by acid pickling | General industrial piping |
| Bright Annealed (BA) | Bright, reflective surface; no scaling | Clean systems, food/dairy |
| Polished (No.4 / 180-600 grit) | Uniform brushed finish | Architectural, sanitary |
| Mirror Polish (#8) | Highly reflective | Decorative, ultra-clean |
| Electropolished | Smooth, passive surface | Pharmaceutical, semiconductor |
Engineers choose A312 pipes over generic stainless alternatives because of the strict manufacturing controls. Here is what you get:
The controlled chemical composition (specifically Chromium & Nickel %) ensures resistance to oxidation, scaling, and intergranular corrosion. Grade TP316L specifically offers enhanced resistance to pitting in seawater and acidic media.
Unlike PVC or carbon steel, A312 stainless maintains its mechanical integrity at temperatures up to 1500°F (815°C). Ideal for superheaters and boiler tubes.
Compliance with ASTM A312 means strict tolerances on OD, wall thickness, and straightness. No “undersized" problems when connecting with A182 forged fittings or A403 butt weld elbows.
The Low Carbon (L) variants (304L, 316L) eliminate the need for post-weld annealing, saving fabrication time and labor costs.
Need Certified ASTM A312 Stainless Steel Pipe for your next shutdown or long-term project?
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
20000000-50000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
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