Seamless steel pipe is a kind of construction material, widely used in many industries. It is a square, round or rectangular hollow section steel, which plays a very important role in the construction industry. Seamless steel tubes are also widely used in fluid pipelines, such as water, oil, natural gas, natural gas and other solid materials. Compared with other solid steel, steel pipe is a light steel, in the same torsional strength, the best bearing steel. Widely used in oil drill pipe, automobile drive shaft, construction steel scaffolding and other structural parts and mechanical parts manufacturing, can improve the utilization rate of materials, simplify the manufacturing process, save materials and processing time.
Clssification and application of seamless steel pipe
1. Structural seamless steel pipe (GBT 8162-2008), mainly used for general structure and mechanical structure, its representative material (grade) : carbon steel, 20,45 steel; Alloy steel Q 345,20 Cr, 40 Cr, 20 CrMo, 30-35 CrMo, 42 CrMo, etc.
2. Seamless Steel pipe for fluid transfer (GBT 8163-2008). Mainly used in engineering and large fluid pipeline equipment. Represents 20, Q 345 and other materials (brand).
3. Seamless steel pipe for low pressure and medium pressure boilers (GB 3087-2008), is a kind of high-quality carbon structure steel hot rolled cold drawn seamless steel pipe, used for the production of various low pressure boiler, medium pressure boiler, boiling water pipe, locomotive boiler superheated steam pipe, large exhaust pipe, small smoke pipe, arch brick pipe, the representative material is No. 10, 20 steel.
4. High pressure boiler with seamless steel pipe (GB5310-2008), used to manufacture high-quality carbon steel alloy steel and stainless steel seamless steel pipe heating surface high pressure and above pressure, representative material for 20g, 12Cr1MoVG, 15 CrMoG, etc.
5. Seamless steel pipe (GB 6479-2000) for high pressure fertilizer equipment, suitable for high quality carbon structural steel and alloy steel seamless steel pipe with working temperature of -40℃ and working pressure of 10-30 mA, representing 20, 16 Mn, 12 CrMo, 12Cr2Mo and other materials.
6. Seamless steel pipe for petroleum cracking (GB 9948-2006), mainly used for boiler, heat exchanger and fluid conveying pipeline of petroleum smelters, its representative materials are 20, 12 CrMo, 1Cr5Mo, 1Cr19Ni11Nb, etc.
7. Steel pipe for geological drilling (YB235-70). It is a kind of steel pipe used for core drilling in the Department of geology, which can be divided into drill pipe, drill ring, core pipe, casing and deposition pipe according to the use.
8. Seamless steel pipe for core drilling (GB 3423-82). It is a seamless steel pipe used in core drilling, such as drill pipe, core pipe and casing.
9. Oil drilling pipe (YB 528-65). It is used to thicken or thicken seamless steel tubes at both ends of oil drilling RIGS. There are two kinds of steel pipe, divided into steel wire and non-steel wire, wire pipe connection, non-wire pipe butt welding and tool joint connection.
Hope that through the above content, we can have a further understanding of seamless steel pipe.
Post time: Feb-07-2023