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The seamless mild steel tube is made of a steel ingot or a solid tube blank through perforation, and then hot-rolled, cold-rolled or cold-drawn.Hot-rolled seamless steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
1. Light weight, high strength and good corrosion resistance.
2. It has good hot and cold processing performance and can meet various complex processing requirements to a certain extent.
3. The production process is simple and the processing cost is low.
| Grade | Chemical Composition (%) | |||||||
| C | Si | Mn | P | S | Ni | Cr | Other | |
| 201 | ≤0.15 | ≤1.00 | 5.5/7.5 | ≤0.060 | ≤0.030 | 3.5-5.5 | 16.0-18.0 | - |
| 202 | ≤0.15 | ≤1.00 | 7.5/10 | ≤0.060 | ≤0.030 | 4.0-6.0 | 17.0-19.0 | - |
| 304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0-11.0 | 18.00-20.00 | - |
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.00-14.00 | 16.0-18.0 | Mo:2.00-3.00 |
| 316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.00-14.00 | 16.0-18.0 | Mo:2.00-3.00 |
| 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 9.00-12.00 | 17.0-19.0 | Ti:5C-0.70 |
| 410 | ≤0.15 | ≤1.00 | ≤1.25 | ≤0.060 | ≤0.030 | ≤0.060 | 11.5-13.5 | - |
| 430 | ≤0.12 | ≤1.00 | ≤1.25 | ≤0.040 | ≤0.03 | - | 16.00-18.00 | - |
| 2205 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.04 | ≤0.03 | 4.5-6.5 | 21.00-24.00 | Mo: 2.5-3.5, |
| N:0.08-0.2 | ||||||||
| 2507 | ≤0.03 | ≤0.80 | ≤1.20 | ≤0.035 | ≤0.02 | 6.00-8.00 | 24.00-26.00 | Mo: 3.0-5.0, |
| N:0.24-0.32 | ||||||||
| Grade | Mechanieal Performece |
| Hardness | |
| 201 | HB≤241,HRB≤100, HV≤240 |
| 202 | HRB≤195, HV≤218 |
| 304 | HB≤187,HRB≤90,HV≤200 |
| 316 | HB≤187, HRB≤90 HV≤200 |
| 316L | HB≤187, HRB≤90 HV≤200 |
| 321 | HRB≤90, HV≤200 |
| 410 | HB≤183, HRB≤88 HV≤200 |
| 430 | HB≤183, HRB≤88 HV≤200 |
| 2205 | Y.S.≥450Mpa, T.S.≥620Mpa |
| 2507 | δb/MPa:800-1000,δ0.2/MPa:≥550 |
Product Name | ||||
(O.D) Outer Diameter | 20MM-1219MM | |||
(W.T)Wall thickness | 0.6MM-20MM | |||
Length | 1M, 4M, 6M, 8M, 12M (accroding to the buyer's request) | |||
Ends | Plain, Beveled, Thread With Couplings Or Sockets; | |||
Standard | GB/T3091-2001 , BS 1387-1985 , DIN EN10025 , EN10219 , JIS G3444:2004 , ASTM A53 SCH40/80/STD , BS- EN10255-2004 | |||
Grade | Q195/Q215/Q235/Q345/S235JR/GR.B-D/STK500 | |||
Technique | Hot Rolled Or Cold Rolled ERW | |||
Package | Covered With Tarpaulin, Containers Or In Bulk | |||
Certification | CE, BV, SGS, ISO9001, API | |||
Delivery Time | stock or Usually within 10-45 days after receipt of advance payment | |||
Delivery Time | 14-20days | |||
Length | 12M | |||
Material | ASTM A106 GR.B | |||
Usage | Industry | |||
MOQ | 1Ton | |||
Packing | STANDARD PACKING |
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