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    Seamless pipe detailed introduction

    Seamless steel pipe of the implementation of standards
    Structure seamless steel pipe: GB/T8162-2008 2, the transmission fluid space pipe joints: GB/T8163-2008 3, boiler seamless steel pipe: GB3087-2008 4, boiler high-pressure seamless pipe: GB5310-2008 (ST45.8-III type), chemical fertilizer equipment with high pressure seamless steel pipes: GB6479-2008, geological drilling and seamless steel pipes: YB235-70, oil drilling, seamless steel pipes: YB528-65, oil cracking using the seamless steel pipe: GB9948-2006, oil drill collar specialized seamless: YB691-70 10, automotive axle seamless steel pipe seamless steel pipe: GB3088-1999 11, ship: GB5312-2008 12 cold-drawn cold rolled precision seamless steel pipe: GB3639-1999 13, all kinds of alloy pipe 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, of 12Cr1MoV, 15CrMo.
    In addition, there GB/T17396-1998 (hydraulic pillar of hot-rolled seamless steel pipe), GB3093-1986 (Diesel high pressure seamless steel pipe), GB/T3639-1983 (cold drawn or cold rolled precision seamless steel pipe ) GB/T3094-1986 (cold drawn seamless steel tube shaped steel tubing), GB/T8713-1988 (hydraulic and pneumatic cylinder with precision internal diameter seamless steel pipe), GB13296-1991 (boilers, heat exchangers, stainless steel seamless steel pipe), GB/T14975-1994 (structural stainless steel seamless steel pipe), GB/T14976-1994 (fluid transport stainless steel seamless steel pipe) GB/T5035-1993 (automobile axle casing of seamless steel pipe) the API SPEC5CT-1999 (casing and tubing specification).
    Seamless steel pipe is a hollow cross section, peripheral joints and long steel steel pipe with a hollow cross section, a large number of pipeline used for the transmission fluid, such as the transportation of oil, gas, gas, water and some solid materials pipeline steel tube and solid steel round bar, etc. compared to the same torsional strength in bending, lighter, is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive transmission, bicycle frame and construction using steel scaffolding steel pipe manufacturing annular parts, improve material utilization, simplify the manufacturing process, saving material and machining time, such as rolling bearing rings, jack sets, has been widely manufactured steel pipe steel pipe or a variety of conventional weapons, an indispensable material, barrel, barrel must be steel pipe manufacturing. pipe cross-sectional area of ​​different shapes can be divided into tube and shaped tubes under the same conditions in the perimeter The area of ​​a circle with a round pipe can carry more fluid. In addition, the ring cross section to withstand internal or external radial pressure, force more uniform, so the vast majority of steel pipe is a tube.

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