Stainless steel pipe is a hollow, elongated circular steel material widely used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical, medical, food, light industry, and mechanical instruments. In addition, when the bending and torsional strength are the same, the weight is relatively light, so it is also widely used in the manufacturing of mechanical parts and engineering structures. It is also commonly used as furniture and kitchenware. The American standard for stainless steel pipes mainly involves relevant specifications developed by the American Society for Testing and Materials (ASTM) and the American Society of Mechanical Engineers (ASME). The following are the main American standards and their characteristics:
1. ASTM A312
Scope of application: Suitable for seamless and welded austenitic stainless steel pipes, such as TP304 and 304L.
Chemical composition: specifies the content range of elements such as carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, etc. For example, the chromium content of TP304 is 18% -20%, and the nickel content is 8% -11%.
Mechanical properties: including tensile strength (≥ 520Mpa), yield strength (≥ 210Mpa), and elongation (≥ 35% in heat-treated state, ≥ 25% in non heat-treated state).
2. ASTM A276
Scope of application: Suitable for stainless steel bars and profiles, such as 420 stainless steel pipes.
Chemical composition: specifies the content of chromium (12% -14%) and carbon (≥ 0.15%), as well as the UNS standard number (such as S42000).
Characteristics: 420 stainless steel has a high carbon content and high hardness after quenching, but its corrosion resistance is limited. It is mainly used for cutting tools, nozzles, etc.
| Standard | JIS ASTM AISI ASME DIN EN GB |
| Place of Origin | China |
| Model Number | TP201 202 301 302 303 TP304 304L 304H TP321 TP309H 310H TP316 316L 321 309S 310S S31803 S2205 2507 410 420 430 444 446 etc. |
| Type | Seamless &Welded |
| Steel Grade | 200Series,300 Series |
| Application | Construction, Industry |
| Tolerance | ±1% |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
| Outer Diameter | 6-1200mm or as customized |
| Alloy Or Not | Non-Alloy |
| Surface Finish | NO.1/2B /BA /HL/8K/ NO.4/EMBOSSED |
| Invoicing | by theoretical weight |
| Delivery Time | 7-10days |
| Product name | ASTM Hot Rolled SUS304 TP304L TP304 Seamless Stainless Steel Pipe DN20 SCH40 TP304H TP309H TP310 TP316Ti TP316L 201 TP321 Welded Square Steel Round Tube Factory |
| MOQ | 1 Ton |
| Shape | Round.square.Rectangle |
| Length | Cutomers Required |
| Packing | Waterproof Standard Sea-worthy Packing |
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| 201 | ≤0 .15 | ≤0 .75 | 5. 5-7. 5 | ≤0.06 | ≤ 0.03 | 3.5 -5.5 | 16 .0 -18.0 | - |
| 202 | ≤0 .15 | ≤l.0 | 7.5-10.0 | ≤0.06 | ≤ 0.03 | 4.0-6.0 | 17.0-19.0 | - |
| 301 | ≤0 .15 | ≤l.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 6.0-8.0 | 16.0-18.0 | - |
| 302 | ≤0 .15 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 8.0-10.0 | 17.0-19.0 | - |
| 304 | ≤0 .0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 8.0-10.5 | 18.0-20.0 | - |
| 304L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.0-13.0 | 18.0-20.0 | - |
| 309S | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 12.0-15.0 | 22.0-24.0 | - |
| 310S | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.035 | ≤ 0.03 | 19.0-22.0 | 24.0-26.0 | |
| 316 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0- |
| 316L | ≤0 .03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤ 0.03 | 12.0 - 15.0 | 16 .0 -1 8.0 | 2.0 - |
| 321 | ≤ 0 .08 | ≤1.0 | ≤2.0 | ≤0.035 | ≤ 0.03 | 9.0 - 13 .0 | 17.0 -1 9.0 | - |
| 630 | ≤ 0 .07 | ≤1.0 | ≤1.0 | ≤0.035 | ≤ 0.03 | 3.0-5.0 | 15.5-17.5 | - |
| 631 | ≤0.09 | ≤1.0 | ≤1.0 | ≤0.030 | ≤0.035 | 6.50-7.75 | 16.0-18.0 | - |
| 904L | ≤ 2 .0 | ≤0.045 | ≤1.0 | ≤0.035 | - | 23.0·28.0 | 19.0-23.0 | 4.0-5.0 |
| 2205 | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.030 | ≤0.02 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 |
| 2507 | ≤0.03 | ≤0.8 | ≤1.2 | ≤0.035 | ≤0.02 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 |
| 2520 | ≤0.08 | ≤1.5 | ≤2.0 | ≤0.045 | ≤ 0.03 | 0.19 -0. 22 | 0. 24 -0 . 26 | - |
| 410 | ≤0.15 | ≤1.0 | ≤1.0 | ≤0.035 | ≤ 0.03 | - | 11.5-13.5 | - |
| 430 | ≤0.1 2 | ≤0.75 | ≤1.0 | ≤ 0.040 | ≤ 0.03 | ≤0.60 | 16.0 -18.0 | - |
Jiangsu Xinyi Company is a professional manufacturer engaged in researching, processing and production and sales for
steel sheet , steel coil , steel pipe , steel profiles , steel bars etc . The material includes alloy ,stainless steel.
Our company's annual sales volume exceeded 500,000 tons , have more than 800 kinds of specifications. Our factory equipped with advanced equipment including laser cutting machine, decoiler machine ,
slitting machine , flying shear machine, Hairline processing machine, polishing machine, folding plate machine, ERW machine ,
packing machine etc. We have a strict system of quality control,SGS testing or other third party testing is welcome. Our products
are in great demand both at domestic and abroad by virtue of excellent product quality and competitive price. Our products are
widely used in the field of tableware, kitchen ware, medical apparatus and instruments, household appliances, auto parts,
construction and decoration , petrochemical industry etc. Our Company has been in steel products and exporting for more than
20 years . And our clients are all over the world. Wuxi Wanhongnuo Company is just the long term reliable steel supplier you are
looking for !
First----We can produce 100 tons of steel pipe products per day, with the highest inventory being conventional sizes.
Second----If you need other sizes, we can customize them according to different customer requirements 
1.Q: Can we visit your factory?
- A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
2.Q: Can provide OEM/ODM service?
-A: Yes. Please feel free to contact us for more details discuss.
3.Q: How is your Payment Term?
-A:We prefer TT, L/C, Western Union, etc.
4.Q: Can you provide sample?
-A: Yes!we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
5.Q.Surface coating
A: Antirusted painting, varnish painting, galvanized, 3LPE, 3PP,Zinc oxide yellow primer,Zinc phosphate primer and as per
customers' request.
6.Q:Why choose our company ?
-A:(1)We are specialized in this industry for more than 20 years (2) We are full stock (3)we have ourselves processing factory
7.Q: What's the MOQ ?
-A: 1 Ton is OK.
8.Q: What's your delivery time ?
-A:Regular lead time is 15 to 30 days after receiving deposit
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