Wuxi Laiyuan Special Steel Co., Ltd.
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Sanitary Seamless Stainless Steel Tube SS Pipe 316 316L 310S 321
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilized by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850 °C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900 °C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
Specification
| Material | 200 300 400 Series stainless steel |
| Grade | 201 202 301 303 304 304L 309 309S 310 310S 316 316L 316Ti 317L 321 2205 2507 409 409l 410 410S 420 420J1 420J2 430 441 444 904L |
| Standard | AiSi ASTM JIS DIN EN BS |
| Tech | cold rolled / hot rolled |
| Type | Welded / Seamless |
| Production technique | *ss seamless pipe: round steel preparation--heating--hot-rolled--cut head--Pickling--grinding--lubricating--cold rolled-- greased-solution--heat treatment--straightening--cut pipe--Pickling--Product testing. *ss welded pipe: raw material(belt or plate)--slitting--welding pipe--repairing--polishing--inspection(printing)--packaging--shipping(warehousing) (decorative welded pipe). |
| Section Shape | round, square, rectangle |
| Thickness | 0.1MM-80MM |
| Normal size | 1mm/1.25mm/1.5mm/2mm/3mm |
| OD(Outer Diameter) | 6mm - 2500mm |
| Normal size | 18mm - 60mm |
| Length | 5.8m, 6m, 12m or as per customer’s request |
| Tolerance | Outer diameter: ±0.1mm / Thickness: ±0.02mm / Length: ±1cm |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
| Place of Origin | Jiangsu China |
| Surface Treatment | pickled, brightened, annealed, polished(#180, 240, 320, 400, 500, 600, 700, 800 grid), colored |
| Payment | T/T terms, 30% pre-payment, 70% balance see B/L copy |
| Delivery Time | 5-15 days for ordinary orders (standard orders ≦50 ton); specified orders needs final confirmation as per customer’s request |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 321 | min. max | - 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | 0.10 | Ti=5(C+N) 0.70 |
| 321H | min. max | 0.04 0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | - | Ti=4(C+N) 0.70 |
| 347 | min. max | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 13.0 | - | Nb=10(C+N) 1.0 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50 mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 347 | 515 | 205 | 40 | 92 | 201 |
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100 °C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
|---|---|---|---|---|---|---|---|---|---|
| 0-100 °C | 0-315 °C | 0-538 °C | at 100 °C | at 500 °C | |||||
| 321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
Why Choose Us?
1. who are we?
We are based in Wuxi, China, start from 2019,sell to Domestic Market and Abroad Market. There are total about 51-100 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;
3.what can you buy from us?
stainless steel plate,stainless steel coil,stainless steel sheet,stainless steel pipe and tube,sainless steel bar
4. why should you buy from us not from other suppliers?
Runs perennial exports of quality assured steel mills ,including Shanxi TISCO, Baosteel, Shanghai Krupp, Ningbo Baoxin, Guangzhou Lianzhong, Zhangjiagang Pohang, Qingdao Pohang, Sweden AvestaPolarit, Finland OUTKUMPU, Spain Acerinox, South Africa Columbus