Astm A355 T12 T22 Alloy Steel Tubes 4"-20" For Boiler
ASTM A355 T12 T22 4"-20”Sch40 Sch60 Alloy Seamless Steel Tube Boiler Tube
.Alloy pipe is a kind of seamless steel pipe. Alloy pipe is divided into structural seamless pipe and high-pressure heat-resistant alloy pipe. It is mainly different from the production standard and industry of alloy pipe. Annealing and tempering of alloy pipe changes its mechanical properties. Meet the required processing conditions. Its performance is higher than that of ordinary seamless steel pipe, its utilization value is higher, the chemical composition of alloy pipe contains more Cr, and its performance of high temperature resistance, low temperature resistance and corrosion resistance. Ordinary carbon seamless pipe does not contain alloy components or there are few alloy components. Alloy pipe is widely used in petroleum, aerospace, chemical industry, electric power, boiler and other industries because the mechanical properties of alloy pipe change and are easy to adjust.
| Alloy steel seamless pipe/tube | |
| PIPES & TUBES | ASTM A335, ASTM A213, ASTM A691 |
| PIPES FITTINGS | ASTM A234 |
| FITTINGS FLANGES | ASTM A182 |
| GRADES | P5/P9/P11/P12/P22/P91 & T5/T9/T11/T22/T91 |
| FORM (PIPES) | SEAMLESS / ERW / LSAW/ SSAW |
| HONGCHENG is Exporters & Supplier of alloy steel seamless pipe, alloy steel pipe gr p5,alloy steel pipe gr p11, alloy steel pipe gr p9, alloy steel pipe gr p22, alloy steel pipegr p91, ASTM A335, ASTM A213, ASTM A691. | |
| Specification for alloy seamless steel tubes | |||
| material quality | specifications | material quality | specifications |
| 12Cr1MovG | 16-18*3 | 15CrMo | 57-60-63.5*4-5-9 |
| 12Cr1MovG | 28-32*3-5-6 | 15CrMo | 89-114*6-8-10 |
| 12Cr1MovG | 48*305-5-6-8 | 15CrMo | 133*6-8-10-14 |
| 12Cr1MovG | 51*3.5-5-6-8 | 15CrMo | 159*8-10-12-16 |
| 12Cr1MovG | 60*4-5-8-10 | 15CrMo | 168*8-10-16-20 |
| 12Cr1MovG | 63.5*4-5 | 15CrMo | 219*14-16-20 |
| 12Cr1MovG | 76*3.5-6-8-10 | 15CrMo | 273*10-12-14-16-20 |
| 12Cr1MovG | 89*4.5-6-8-10-12 | 15CrMo | 325*10-12-14-25 |
| 12Cr1MovG | 108*4.5-6-8-10-12 | 15CrMo | 377*10-12-25 |
| 12Cr1MovG | 114*6-8-10-12-14 | 15CrMo | 377*24-45 |
| 12Cr1MovG | 159*8-10-12-16 | 15CrMo | 426*12-14-16-30 |
| 12Cr1MovG | 194*8-10-16 | 10Crm910 | 33.4*9.1 |
| 12Cr1MovG | 219*8-10-16-20-25 | 10Crm910 | 54*6.5 |
| 12Cr1MovG | 245*10-12-20 | 10Crm910 | 57*5.6 |
| 12Cr1MovG | 273*10-10-12 | 10Crm910 | 530*110 |
| 12Cr1MovG | 325*10-12-14-25-30 | T91 | 57-60*5.6 |
| 12Cr1MovG | 377*10-16-30 | T91 | 60*4-6-8 |
| 12Cr1MovG | 426*10-16-25 | T91 | 54-4-8-10 |
| 12Cr1MovG | 480*48 | T91 | 51*7 |
| 15CrMo | 28*4-6 | T91 | 42-5.5 |
| 15CrMo | 38-42-45*3.5-5-6-8 | 12Cr2MoWVTiB | 42*3.5-5 |
| 15CrMo | 51*3.5-4-5-6-8 | 15Mn3 | 42*5-6 |
2.Chemical details:
| Item | C | Si | Mn | P | S | Cr | Mo |
| P1 | 0.10-0.20 | 0.10-0.50 | 0.3-0.80 | ≤0.025 | ≤0.025 | / | 0.44-0.65 |
| P2 | 0.10-0.20 | 0.10-0.30 | 0.3-0.61 | ≤0.025 | ≤0.025 | 0.5-0.81 | 0.44-0.65 |
| P5 | ≤0.15 | ≤0.50 | 0.3-0.60 | ≤0.025 | ≤0.025 | 4.0-6.0 | 0.44-0.65 |
| P9 | ≤0.15 | ≤0.50 | 0.3-0.60 | ≤0.030 | ≤0.030 | 8.0-10.0 | 0.90-1.10 |
| P11 | 0.05-0.15 | 0.5-1.0 | 0.3-0.60 | ≤0.025 | ≤0.025 | 1.0-1.50 | 0.44-0.65 |
| P22 | 0.05-0.15 | ≤0.50 | 0.3-0.60 | ≤0.025 | ≤0.025 | 1.9-2.60 | 0.87-1.13 |
| P21 | 0.05-0.15 | ≤0.50 | 0.3-0.60 | ≤0.025 | ≤0.025 | 2.65-3.35 | 0.80-1.06 |
| P91 | 0.08-0.12 | 0.20-0.50 | 0.30-0.60 | ≤0.020 | ≤0.010 | 8.0-9.5 | 0.85-1.05 |
| P15 | 0.05-0.15 | 1.15-1.65 | 0.30-0.60 | ≤0.025 | ≤0.025 | / | 0.44-0.65 |
Mechanical Property:
| Standard | Grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | |
| ≤16 | >16-30mm | ||||
| GB/T8162-1999 | 10 | 335 | 205 | 195 | 24 |
| 20 | 390 | 245 | 235 | 20 | |
| 35 | 510 | 305 | 295 | 17 | |
| 45 | 590 | 335 | 325 | 14 | |
| 16Mn | 490 | 325 | 315 | 21 | |
| GB/T8163 | 10 | 335~475 | ≥205 | ≥24 | |
| 20 | 410~550 | ≥245 | ≥20 | ||
| Q345 | 490~665 | ≥325 | ≥21 | ||
| GB/T3087 | 10 | 333-475 | ≥196 | ≥24 | |
| 20 | 392-588 | ≥245/226 | ≥20 | ||
| GB/T5310 | 20G | 410-550 | ≥245 | ≥24 | |
| 12CrMoG | 410-560 | ≥205 | ≥21 | ||
| 15CrMoG | 450-640 | ≥235 | ≥21 | ||
| 12Cr1MoVG | 470-640 | ≥255 | ≥21 | ||
| GB/T9948 | 10 | 330-490 | ≥205 | ≥24 | |
| 20 | 410-550 | ≥245 | ≥21 | ||
| 12CrMoG | 410-560 | ≥205 | ≥21 | ||
| 15CrMoG | 410-640 | ≥235 | ≥21 | ||
| GB/T6479 | 10 | 330-490 | ≥205 | ≥24 | |
| 20 | 410-500 | ≥245 | ≥21 | ||
| 12CrMo | 410-560 | ≥205 | ≥21 | ||
| 15CrMo | 440-640 | ≥235 | ≥21 | ||
FAQ
1.Q:Are you a factory or trading company?
A: We are a factory, has more than 20 years experience in pipe fittings production.
2.Q:Where is your factory located? How can I visit there?
A: Our factory is located in cangzhou City, hebei Province,China.
3.Q:How does your factory do regarding quality control?
A: We are ISO9001& PED certified by TUV. We serious control the quality from raw material to finished pipe fittings. So that we can 100% sure our goods is qualified.
4. Q: Price high ?
A: Our price is workable. We had tried use auto equipment to save Workers cost, and control other costs. like human sources, logistics etc.
5.Q: After sales service.
A: Quality are promised. If our products are not meet the contract we would like to send free goods to you.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.