Shanxi Zhongcheng Metal Co., Ltd.
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal |
| Supply Ability | 10000tons |
| Delivery Time | 15-25days |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA |
| Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available |
| 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) |
| MOQ | 100kg |
| Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons |
| Brand Name | Baosteel，TISCO |
| 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 |
| Place of Origin | MADE IN CHAINA |
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Product Specification
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal | Supply Ability | 10000tons |
| Delivery Time | 15-25days | Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA | Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available | 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) |
| MOQ | 100kg | Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons | Brand Name | Baosteel，TISCO |
| 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 |
| Place of Origin | MADE IN CHAINA | ||
| High Light | Low Carbon Stainless Steel Seamless Pipe ，Stainless Steel Seamless Pipe Weldable | ||
Low carbon seamless stainless pipe is a specialized category of austenitic stainless steel pipe with a maximum carbon content of 0.030%, significantly lower than standard grades which contain up to 0.080% carbon. This reduced carbon content provides critical advantages for welded assemblies and applications involving exposure to corrosive media in the as-welded condition.
The primary benefit of low carbon stainless steel is its resistance to sensitization – the precipitation of chromium carbides at grain boundaries during welding or elevated temperature service (425-870°C / 800-1600°F). Sensitization depletes chromium adjacent to the grain boundaries, creating zones susceptible to intergranular corrosion. Low carbon grades virtually eliminate this risk, allowing the material to be welded without post-weld heat treatment (PWHT) and maintaining its corrosion resistance throughout the welded joint.
The seamless manufacturing process ensures uniform wall thickness, consistent mechanical properties, and complete absence of a longitudinal weld seam. This seamless construction provides superior pressure-holding capability and reliability compared to welded pipes, making low-carbon seamless pipes the preferred choice for critical applications in chemical processing, pharmaceutical, food and beverage, power generation, and general industrial service.
| Parameter | 304L Low Carbon Grade | 316L Low Carbon Grade |
|---|---|---|
| UNS Number | S30403 | S31603 |
| ASTM Grade | TP304L | TP316L |
| EN Equivalent | 1.4307 | 1.4404 |
| EN Material Name | X2CrNi18-9 | X2CrNiMo17-12-2 |
| JIS Equivalent | SUS 304L | SUS 316L |
| Standards | ASTM A312, A269, A213, EN 10216-5 | ASTM A312, A269, A213, EN 10216-5 |
| Form | Seamless Pipe (SMLS) | Seamless Pipe (SMLS) |
| Outer Diameter Range | 1/8" to 24" NPS (3.18mm to 610mm) | 1/8" to 24" NPS (3.18mm to 610mm) |
| Wall Thickness | SCH 5S to SCH XXS (0.5mm to 50mm) | SCH 5S to SCH XXS (0.5mm to 50mm) |
| Length | Single random, double random, or exact cut | Single random, double random, or exact cut |
| Pipe Ends | Plain End / Beveled End / Threaded | Plain End / Beveled End / Threaded |
| Surface Finish | AP, BA, Polished | AP, BA, Polished |
| Packing Method | Plastic end caps + steel strapping + wooden crates | Plastic end caps + steel strapping + wooden crates |
| Certification | EN 10204 Type 3.1 or 3.2 | EN 10204 Type 3.1 or 3.2 |
| Element | Content (% by weight) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 0.75 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Chromium (Cr) | 18.00 – 20.00 |
| Nickel (Ni) | 8.00 – 12.00 |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
| Element | Content (% by weight) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 0.75 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Chromium (Cr) | 16.00 – 18.00 |
| Nickel (Ni) | 10.00 – 14.00 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
When standard stainless steel (0.080% carbon) is heated to 425-870°C (800-1600°F) – typical welding temperatures – chromium carbides precipitate at grain boundaries. This precipitation removes chromium from the adjacent areas, reducing local chromium content below the 12% threshold needed for corrosion resistance.
| Issue | Description |
|---|---|
| Intergranular Corrosion (IGC) | Corrosion attacks the chromium-depleted grain boundaries, leading to loss of strength |
| Weld Decay | Corrosion occurs in a narrow band adjacent to the weld, often invisible until failure |
| Knife-Line Attack | Corrosion along a narrow line in the heat-affected zone of stabilized grades |
| Performance Loss | Material fails prematurely in service |
| Carbon Content | Sensitization Risk | Post-Weld Heat Treatment Required? |
|---|---|---|
| 0.080% (304/316) | High | Yes (1050°C + quench) |
| 0.030% max (304L/316L) | Virtually None | No |
By reducing the carbon content to 0.030% maximum, there is insufficient carbon available to form harmful chromium carbides during welding. The material can be used in the as-welded condition without any loss of corrosion resistance.
| Finish | Code | Description | Best For |
|---|---|---|---|
| Annealed & Pickled (AP) | 1E (EN) | Scale removed by acid bath, matte gray | General industrial, chemical |
| Bright Annealed (BA) | 2R (EN) | Oxide-free, bright reflective | Pharmaceutical, clean service |
| Polished 180# | - | Medium matte finish | Industrial equipment |
| Polished 320# | - | Fine matte finish | Architectural, dairy |
| Polished 400# | - | Near-mirror finish | Food contact, decorative |
| Electropolished (EP) | - | Smooth, bright, decontaminated | Semiconductor, ultra-high purity |
| Environment | 304L | 316L |
|---|---|---|
| Atmospheric (rural/urban) | Excellent | Excellent |
| Atmospheric (coastal) | Moderate | Excellent |
| Freshwater | Excellent | Excellent |
| Seawater (intermittent) | Limited | Good |
| Seawater (continuous) | Not recommended | Moderate-Good |
| Dilute Organic Acids | Good-Excellent | Excellent |
| Acetic Acid | Good | Excellent |
| Sulfuric Acid (dilute, <10%) | Moderate | Moderate-Good |
| Phosphoric Acid (dilute) | Moderate | Good-Excellent |
| Chlorides (high concentration) | Poor | Good |
| Chloride Stress Corrosion Cracking | Susceptible >60°C | Resistant (to higher limits) |
| Intergranular Corrosion (as-welded) | Excellent (low carbon) | Excellent (low carbon) |
For inquiries, technical data sheets, or a quotation for low-carbon seamless stainless pipe (304L / 316L / 1.4307 / 1.4404), please contact our sales team.
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
Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide... Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide...
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