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| After-sales Service: | 7 X 24 Hours One Week |
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| Warranty: | 1 Year |
| Type: | Seamless |
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| Product Name | Alloy Steel Seamless Boiler Pipes and Pipe Fittings |
| Standards | AISI, GB, ASTM, JIS, DIN, EN |
| Technique | Hot rolled, cold drawn, or hot expanded |
| Grades | A213 A335 P91 P9 T5 T9 P5 P11 P12 P22 T2 P2 T11 T12 T91 |
| Diameter | 1 1/4"-20" (42.2mm-508mm) |
| Thickness | SCH10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS, SS, 10S (3mm-50mm) |
| Length | 3-12m, random or fixed, as per the clients' request. |
| Surface | Bare pipe, black, red, yellow, brown, blue varnished or as per required color, anti-rust oiled etc. |
| Packing | For pipe OD below 219mm, wrapped by steel strips, for pipe OD above 219mm, single pipe delivered |
| Characteristic | High temperature resistance and pressure resistance, be able to withstand corrosion and pressure in high-temperature and high-pressure environments. |
| Application | High-temperature Superheater, Boiler pipe, Reheater Pipe, Steam Pipeline Pipe, used in industry of power plant, generating station, petroleum , natural gas, chemical industry, and so on |
| Shipping term | For short pipes or cutting pieces length below 5.9m, we use 20feet containers; For long pipes length above 6m, we use 40feet containers; bulk ships or as per client request |
| Shipping port | Qingdao port, or Tianjin port |
| Customized service | Production as per agreement |
| Inspection | Third party inspection, or clients themselves inspect on spot both welcomed |
| Paying term | 30%TT + 70% TT against copy of documents, or 30%TT + 70% LC. |
| Brand name | Baotou Steel, Hengyang Valin Steel, Chengde Steel, Bao Steel, Jingjiang Special Steel etc. |
| ASTM A53 Gr.B | Black and hot-dipped zinc-coated steel pipes welded and seamless |
| ASTM A106 Gr.B | Seamless carbon steel for high temperature service |
| ASTM SA179 | Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes |
| ASTM SA192 | Seamless carbon steel boiler tubes for high pressure |
| ASTM SA210 | Seamless Medium-carbon boiler and superheater tubes |
| ASTM A213 | Seamless alloy-steel boiler, superheater, and heat-exchanger tubes |
| ASTM A333 Gr.6 | seamless and welded carbon and alloy steel pipe intended for use at low temperatures |
| ASTM A333 P9,P11,T22,T91 | Seamless ferritic alloy-steel pipe for high-temperature service |
| ASTM A336 | Alloy steel forgings for pressure and high-temperature parts |
| ASTM SA519 4140/4130 | Seamless carbon for mechanical tubing |
| API Spec 5CT J55/K55/N80/L80/P110/K55 | Seamless steel pipe for casing |
| API Spec 5CT PSL1/PSL2/Gr.b, X42/46/52/56/65/70 | Seamless steel pipe for line pipe |
| DIN 17175 | Seamless steel tube for elevated temperture |
| DN2391 | Cold drawn seamless prevision pipe |
| DIN 1629 | Seamless circular unalloyed steel tubes subject to special requirements |
| Descriptions | Grades | Standard | Specification (OD*WT)mm |
Usage |
| Structural steel pipe | 20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2, SAE1018, SAE1020, SAE1518, SAE1045. | GB/T8162-2008 | 6-1020*1.5-100 | For commom structure |
| Fluid steel pipe | 10#, 20#, ASTM A106, A210, A53, 16Mn, Q345A.B.C.D.E, Q295B.C.D.E | GB/T8163-2008 | 8-630*1.0-40 | Fluid feeding |
| High pressure boiler pipe | 20G, 15MnG, 20MnG, 15CrMoG, 12Cr1MoVG, St35.8, St45, SA106b, SA106c, SA210a, SA210c, A335P2, P11, P12, P22, P91, P92, A213 T2,T9, T11, T12, T22, T23, T91 | GB/5310-2008, ASTM A 106-99, DIN 17175-79 |
14-630*2-80 | Temperature-resistant seamless steel pipe far high-pressure boiler |
| Oil casing pipe | API SPEC 5CT J55, K55, N80, L80, C90, C95, P110 | API SPEC 5CT, SY/T6194-96, GB/T222-84, | 10-530*1.5-36 | Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipeline |
| Pipeline | API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTM A53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245 |
API SPEC 5L, ISO 3183, GB/T 9711 | 60-630*1.5-40 | Carrying gas,water or oil in the industries of petroleum and natural gas |
| Alloy steel pipe | 4140, 42CrMo, 32CrMo, 15CrMo, Cr5Mo, 13CrMo44, 12Cr1MoV P22 T91,P91,P9, T9, Wb36 | GB5310-95, GB9948-88, ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JISG3467-88, JISG3458-88 |
16-824*2-100 | The seamless steel pipes features resistance to high presure,high/low temperature and corrosion ano is used in the industries of petroleum, chemical engineering and. Electric pwer as well as boiler |
| Hydraulic prop pipe | 20#, 45#, 27SiMn, 30CrMoSiA | GB/T17396-2009 | 70-377*9-40 | Coal mine hydraulic support and pillar cylinder, column, can also be used for other hydraulic cylinder, column |
| Standard | Trademark | Chemical components | Mechanical property | ||||||||||
| C | Si | Mn | P,S | Cu | Ni | Mo | Cr | V | Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (%) |
||
| ASTM A106 | B | ≤0.30 | ≥0.10 | 0.29~1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 | ≥415 | ≥240 | ≥30 |
| C | ≤0.35 | ≥0.10 | 0.29~1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 | ≥485 | ≥275 | ≥30 | |
| Grade | Chemical composition (%) | |||||
| C | Mn | Si | P | S | Al | |
| Q235A | 0.14~0.22 | 0.30~0.65 | ≤0.30 | ≤0.045 | ≤0.050 | |
| Q235B | 0.12~0.20 | 0.30~0.67 | ≤0.30 | ≤0.045 | ≤0.045 | |
| Q235C | ≤0.18 | 0.35~0.80 | ≤0.30 | ≤0.040 | ≤0.040 | |
| Q235D | ≤0.17 | 0.35~0.80 | ≤0.35 | ≤0.035 | ≤0.040 | |
| Q345A | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.035 | ≤0.035 | |
| Q345B | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.035 | ≤0.035 | |
| Q345C | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.030 | ≤0.030 | ≥0.015 |
| Q345D | ≤0.18 | ≤1.70 | ≤0.50 | ≤0.030 | ≤0.025 | ≥0.015 |
| Q345E | ≤0.18 | ≤1.70 | ≤0.50 | ≤0.025 | ≤0.020 | ≥0.015 |
| Material | Chemical composition (%) | ||||||
| C | Mn | P | S | Si | Ni | Cu | |
| 1020 | 0.17~0.23 | 0.35~0.65 | ≤0.035 | ≤0.035 | 0.17~0.37 | ≤0.3 | ≤0.25 |
| 1045 | 0.42~0.5 | 0.5~0.8 | ≤0.04 | ≤0.045 | 0.17~0.37 | ≤0.25 | ≤0.25 |
| 1010 | 0.08-0.13 | 0.30-0.60 | ≤0.040 | ≤0.050 | - | - | ≤0.20 |
| 1035 | 0.32-0.38 | 0.50-0.80 | ≤0.040 | ≤0.050 | - | - | ≤0.20 |
| Steel material | Tensile Strength Mpa | Yield strength Mpa | Elongation % | Hardness | Straightness |
| 1020 | ≥510 | ≥245 | ≥25 | ≤156HB | 0.3~1.0 |
| 1045 | ≥647 | ≥355 | ≥16 | ≤HRC62 | 0.3~1.0 |
| 1010 | ≥410 | ≥245 | ≥25 | ≤156HB | 0.3~1.0 |
| 1035 | ≥530 | ≥315 | ≥20 | ≤156HB | 0.3~1.0 |








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