Carbon And Alloy Steel Seamless Pipes - 1/4 To 32 Inch Outer Diameter, 1 To 100mm Thickness | Hot Rolled, Round Shape, Length 1-12m, End Protector Plastic Pipe Cap, Astm Standard

Q355B/C/D/E, 27SiMn, 20Cr 40Cr 42CrMo 35CrMo 15CrMoG, 12Cr2MoG, 12CR1MOVG, P91, P92, L245QB(B) , L290QB(X42), L360QB(X52), L415QB(X60), L450QB(X65), L485QB(X70), L555QB(X80), L245NB, L290NB, L360NB, L415NB, L245MB, L360MB, L290MB, L415MB, L450MB, etc. Executive standard: GB/T8162-99 structural pipe, GB/T8163-99 fluid pipe, GB/T3087-99 medium and low pressure boiler pipe, GB/T5310-95 high pressure boiler pipe, GB/T6479-2000 fertilizer special pipe, 27SiMn hydraulic support Pipe, high pressure alloy pipe, GB/T9948-85 petroleum cracking pipe GB9948-88, geological drilling pipe YB235-70, automobile half-shaft casing YB/T5035-9. Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes have square, elliptical, triangular, hexagonal, melon-shaped, star-shaped, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.