What is Stainless Steel Seamless Pipe
Stainless steel seamless pipe is a long steel material with a hollow section and no seams around it. The thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the processing cost will increase significantly.
The process of this product determines its limited performance. Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness of the inner and outer surfaces of the pipe, high cost of sizing, and pitting and black spots on the inner and outer surfaces that are difficult to remove; its detection and Shaping must be processed offline. Therefore, it reflects its superiority in terms of high pressure, high strength, and mechanical structural materials.
Available Specification
| Product Name | Executive Standard | Dimension | Steel Code / Steel Grade |
| Seamless Austenitic Stainless Steel Pipes | ASTM A312/A312M, ASME SA312/SA312M | OD: 1/4″~20″ WT: SCH5S~SCH80S |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Seamless Austenitic Stainless Steel Tubing for General Service | ASTM A269, ASME SA269 | OD: 6.0~50.8mm WT: 0.8~10.0mm |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Seamless Austenitic Alloy-Steel Boiler, Super Heater, and Heat-Exchanger Tubes | ASTM A213/A213M, ASME SA213/SA213M | OD: 6.0~50.8mm WT: 0.8~10.0mm |
TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H |
| Seamless Duplex Stainless Steel Tubing for General Service | ASTM A789 / A789M | OD: 19.0~60.5mm WT: 1.2~5.0mm |
S31803, S32205, S32750 |
| Seamless Duplex Stainless Steel Pipes | ASTM A790 / A790M | OD: 3/4″~10″ WT: SCH5S~SCH80S |
S31803, S32205, S32750 |
| Seamless Stainless Steel Mechanical Tubing | ASTM A511 | OD: 6.0~50.8mm WT: 1.8~10.0mm |
MT304, MT304L, MT304H, MT310, MT310S, MT316, MT316L, MT317, MT317L, MT321, MT321H, MT347 |
| Seamless Stainless Steel Tubes for Pressure Purposes | EN 10216, DIN 17456, 17458 | OD: 6.0~530.0mm WT: 0.8~34.0mm |
1.4301, 1.4307, 1.4541, 1.4401, 1.4404, 1.4571, 1.4878, 1.4432, 1.4462 |
Chemical Composition of ASTM A213 Stainless Steel Seamless Pipe
| Grade | UNS Designation |
Composition | |||||||
| Carbon | Manganese | Phosphorous | Sulfur | Silicon | Chromium | Nickel | Molybdenum | ||
| C | S25700 | 0.02 | 2.00 | 0.025 | 0.010 | 6.5-8.0 | 8.0-11.5 | 22.0-25.0 | 0.50 |
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … |
| TP304L | S30403 | 0.035D | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-12.0 | … |
| TP304H | S30409 | 0.04–0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … |
| C | S30432 | 0.07–0.13 | 0.50 | 0.045 | 0.030 | 0.03 | 17.0-19.0 | 7.5-10.5 | … |
| TP304N | S30451 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … |
| TP304LN | S30453 | 0.035D | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | … |
| C | S30615 | 0.016–0.24 | 2.00 | 0.030 | 0.030 | 3.2-4.0 | 17.0-19.5 | 13.5-16.0 | … |
| C | S30815 | 0.05–0.10 | 0.80 | 0.040 | 0.030 | 1.40-2.00 | 20.0-22.0 | 10.0-12.0 | … |
| TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00–3.00 |
| TP316L | S31603 | 0.035D | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00–3.00 |
| TP316H | S31609 | 0.04–0.10 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 11.0-14.0 | 2.00–3.00 |
| TP316N | S31651 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-13.0 | 2.00–3.00 |
| TP316LN | S31653 | 0.035D | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-13.0 | 2.00–3.00 |
Chemical Composition of ASTM A312 Stainless Steel Seamless Pipe
| Grade | UNS Designation |
Composition | |||||||
| Carbon | Manganese | Phosphorous | Sulfur | Silicon | Chromium | Nickel | Molybdenum | ||
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0 – 20.00 | 8.0-11.0 | … |
| TP304L | S30403 | 0.035 D | 2.00 | 0.045 | 0.03 | 1.00 | 18.0 – 20.00 | 8.0-113.0 | … |
| TP304H | S30409 | 0.04 – 0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0 – 20.00 | 8.0-11.0 | … |
| … | S30415 | 0.04 – 0.06 | 0.8 | 0.045 | 0.03 | 1.00 –2.00 | 18.0 – 19.0 | 9.0-10.0 | … |
| TP304N | S30451 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0 – 20.00 | 8.0-18.0 | … |
| TP304LN | S30453 | 0.035 | 2.00 | 0.045 | 0.03 | 1.00 | 18.0 – 20.00 | 8.0-12.0 | … |
| TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 11.0-14.0E | … |
| TP316L | S31603 | 0.035 D | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0 | … |
| TP316H | S31609 | 0.04 – 0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 10.0-14.0E | … |
| TP316Ti | S31635 | 0.08 | 2.00 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 10.0-14.0 | 53 (C+N) –0.70 |
| TP316N | S31651 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 11.0-14.0E | … |
| TP316LN | S31635 | 0.035 | 2.00 | 0.045 | 0.03 | 1.00 | 16.0-18.0 | 11.0-14.0E | … |
Mechanical Properties of ASTM A213 Stainless Steel Seamless Pipe
| Grade | UNS Designation |
Tensile Strength min, ksi [MPa] |
Yield Strength, min, ksi [MPa] |
| TP304 | S30400 | 75[515] | 30[205] |
| TP304L | S30403 | 70[485] | 25[170] |
| TP304H | S30409 | 75[515] | 30[205] |
| … | S30432 | 80[550] | 30[205] |
| TP304N | S30451 | 80[550] | 35[240] |
| TP304LN | S30453 | 75[515] | 30[205] |
| TP316 | S31600 | 75[515] | 30[205] |
| TP316L | S31603 | 70[485] | 25[170] |
| TP316H | S31609 | 75[515] | 30[205] |
| TP316N | S31651 | 80[550] | 35[240] |
Mechanical Properties of ASTM A312 Stainless Steel Seamless Pipe
| Grade | UNS Designation |
Tensile Strength min, ksi [MPa] |
Yield Strength, min, ksi [MPa] |
| TP304 | S30400 | 75[515] | 30[205] |
| TP304L | S30403 | 70[485] | 25[170] |
| TP304H | S30409 | 75[515] | 30[205] |
| . . . | S30415 | 87[600] | 42[290] |
| TP304N | S30451 | 80[550] | 35[240] |
| TP304LN | S30453 | 75[515] | 30[205] |
| TP316 | S31600 | 75[515] | 30[205] |
| TP316L | S31603 | 70[485] | 25[170] |
| TP316H | S31609 | 75[515] | 30[205] |
| . . . | S31635 | 75[515] | 30[205] |
| TP316N | S31651 | 80[550] | 35[240] |
| TP316LN | S31653 | 75[515] | 30[205] |
Product Features
1. Chemical analysis: Conduct chemical analysis on the chemical composition of the material, and the chemical composition complies with the standards.
2. Air pressure and hydraulic pressure test: The pressure-resistant pipes are tested one by one. The specified pressure value is not maintained for no less than 5 seconds and there is no leakage. The conventional supply hydraulic pressure test is 2.45MPa. The air pressure pressure test is P =0.5MPAa.
3. Corrosion test: All industrial corrosion-resistant steel pipes supplied are tested for corrosion resistance in accordance with standards or corrosion methods agreed upon by both parties. There must be no intergranular corrosion tendency.
4. Process performance inspection: flattening test, tensile test, impact test, expansion test, hardness test, metallographic test, bending test, non-destructive testing (including eddy current testing, X-ray testing and ultrasonic testing).
5. Theoretical weight:
Cr-Ni austenitic stainless steel W=0.02491S(D-S)
Cr-Ni-Mo austenitic stainless steel (kg/m)S-wall thickness (mm)
D-Outer diameter (mm)
Jiangsu Hangdong Metal Co., Ltd. is a casting and processing technology enterprise that produces pure copper, brass, bronze and copper-nickel alloy copper-aluminum plate and coil, with advanced production equipment and inspection instruments. It has 5 aluminum production lines and 4 copper production lines to produce all kinds of standard copper plate, copper tube, copper bar, copper strip, copper tube, aluminum plate and coil, and non-standard customization. The company provides 10 million tons of copper materials all year round. The main product standards are: GB/T, GJB, ASTM, JIS and German standard.Contact us:info6@zt-steel.cn
Post time: Jan-11-2024
