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Seamless steel pipe is a type of steel pipe that is manufactured without any welding seam or joint. It is made by heating a solid billet of steel to a high temperature and then stretching it out to form a hollow tube. The absence of a welded seam makes seamless steel pipes stronger and more reliable than welded pipes. Seamless steel pipes are commonly used in various industries, including oil and gas, petrochemical, power generation, and automotive. They are used for transporting fluids and gases, as well as for structural applications. The advantages of seamless steel pipes include: 1. Strength and durability: Seamless steel pipes are stronger and more durable than welded pipes because they do not have any weak points due to welding. 2. Uniformity: Seamless steel pipes have a uniform thickness and diameter throughout their length, which ensures consistent performance and reliability. 3. Corrosion resistance: Seamless steel pipes are resistant to corrosion, making them suitable for use in harsh environments. 4. High pressure resistance: Seamless steel pipes can withstand high pressure and temperature, making them ideal for applications that require reliable performance under extreme conditions. 5. Cost-effectiveness: Although seamless steel pipes may have a higher initial cost compared to welded pipes, their long-term durability and reliability make them a cost-effective choice. In conclusion, seamless steel pipes are a reliable and durable option for various applications. Their strength, uniformity, corrosion resistance, high pressure resistance, and cost-effectiveness make them a preferred choice in many industries.
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 common 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,heat-exchangeing 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 steal pipes features resistance to high pressure,high/low temperature and corrosion ano is used in the industries of petroleum, chemical engineering and. Electric power 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 |