Seamless pipe is a hollow section, no surrounding joint strip steel. The worldproduction of seamless pipe, a total of more than 5100 production plant more than 1850 companies in more than 110 countries under the production of oilpipe, which has more than 260 factory more than 170 companies in 44 countries under the.

Seamless tube with 1 structure (GB/T8162-2008) is used for seamless tubegeneral structure and mechanical structure.

Seamless pipe 2 fluid transport (GB/T8163-2008) is used for general seamless pipe conveying water, oil, gas and other fluid.

For low and medium pressure boiler seamless pipe 3 (GB3087-2008) is used in the manufacture of various structure of low and medium pressure boilersuperheated steam pipe, superheated steam pipe, boiling water pipe andlocomotive boiler flue tube, small pipe and brick arch tubes of high-quality carbon structural steel hot-rolled and cold drawn seamless pipe (rolling).

High pressure boiler seamless pipe with 4 (GB5310-2008) is used for heating surface tube boiler manufacturing high and higher pressure of high quality carbon steel, alloy steel and heat resisting stainless steel seamless pipe.

High pressure seamless tube with 5 chemical fertilizer equipment (GB6479-2000) is suitable for the work temperature of high quality carbon structural steel and alloy steel seamless tube of -40~400 DEG C, the working pressurefor chemical equipment and pipeline of 10~30Ma.

Seamless tube with 6 petroleum cracking (GB9948-2006) is applied to the oil refinery furnace tubes, heat exchangers and pipe seamless pipe.

Steel pipe 7 geological drilling (YB235-70) is for the Geological Department of the steel core drilling is used, according to use can be divided into the drill pipe, drill collar, core pipe, casing and sedimentation tubes.

Seamless tube with 8 diamond core drilling (GB3423-82) is used for seamlessdrill pipe, casing, Yan Xingan diamond core drilling.

9 oil drilling pipe (YB528-65) is used for seamless oil drilling internal upset ends or the outer thickening.

Seamless tube

Seamless tube

10 ships for carbon steel seamless pipe (GB5312-85)

China classification society rules for materials and welding -- ChineseClassification Society (CCS)

The Norway Classification Society (DNV) specification -- Norway Classification Society (DNV)

Lloyd's register of shipping (LR) specification -- British Lloyd's register of shipping (LR)

Germanischer Lloyd (GL) specification -- Germanischer Lloyd (GL)

American Bureau of shipping (ABS) specification - American Bureau of shipping (ABS)

Bureau Veritas (BV) specification - French Classification Society (BV)

The Italy Classification Society (RINA) specification, Italy Classification Society(RINA)

The Japanese classification society (NK) specification -- the Japaneseclassification society (NK)

The ship is making I level pressure piping, II level pressure piping, boiler and superheater for carbon steel seamless pipe. Carbon steel seamless pipe walltemperature does not exceed 450 degrees, alloy steel seamless pipe walltemperature more than 450 DEG C.

11 of automobile half shaft sleeve pipe seamless pipe (GB3088-82) is the manufacture of automobile half shaft sleeve and the driving bridge shell axis effective quality carbon structural steel and alloy structural steel hot-rolled seamless tube.

High pressure oil pipe with 12 diesel engine (GB3093-86) is a cold drawn seamless pipe manufacturing high-pressure diesel injection systems for.

With precision internal diameter seamless pipe 13 for hydraulic and pneumatic cylinder (GB8713-88) is the manufacture of hydraulic and pneumatic cylinderwith precision diameter with cold drawn or cold rolled precision seamless tube.

14 cold drawn or cold rolled precision seamless pipe (GB3639-83) is used fordimensional precision mechanical structure, hydraulic equipment, high and good surface finish of cold drawn or cold rolled precision seamless tube.Selection of precision seamless tube manufacturing mechanical or hydraulic equipment.

Stainless steel seamless tube with 15 structure (GB/T14975-2002) is widely used in chemical, petroleum, made of stainless steel hot-rolled textile, medical,food, machinery and other industrial anti-corrosion pipes and structural partsand components of a (extrusion, expansion) and cold drawing (rolling)seamless pipe.

Stainless steel seamless tube 16 fluid transport (GB/T14976-2002) is used for the transmission fluid made of stainless steel hot-rolled (extrusion, expansion)and cold drawing (rolling) seamless pipe.

17 special seamless tube is in addition to general seamless other cross section shapes of circular pipe outside the. According to the section of the steel pipe of different shapes and sizes can be divided into equal wall thickness of seamless pipe (codenamed D), unequal wall thickness of seamless pipe (codenamed BD), variable diameter special-shaped seamlesspipe (codenamed BJ). Shaped seamless pipe is widely used for variousstructural parts, tools and machinery parts.

Seamless steel tubes for 18 cryogenic pipe (GB/T18984-2003) is the use ofseamless steel tube for -45 to -195 DEG C low-temperature pressure vessellevel and low temperature heat exchanger tubes

General seamless tube is made with 10, 20, 30, 35 and 45 carbon steel 16Mnand 5MnV low alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold-rolled made. 10 and 20 low carbon steelseamless pipe is mainly used for fluid conveying pipeline. In 45, 40Cr in carbon steel seamless pipe used to make machine parts, such as automobile, tractorparts under stress. General seamless pipe to ensure the strength andflattening test. Hot rolled steel pipe in hot state or heat treatment delivery; cold with heat to heat treatment delivery. Seamless steel tubes for low and medium pressure boiler: used in the manufacture of a variety of low and medium pressure boiler, the superheated steam tube, boiling water pipe, superheated steam pipe, water wall tube and locomotive boiler flue tube, pipe and pipe arch bricks.

With high-quality carbon structural steel hot-rolled or cold-rolled seamless pipe(dial). Mainly used in 10, 20 steel manufacturing, in addition to ensure that the chemical composition and mechanical properties of the outer do pressure test,curling, flaring, flattening test. Hot rolled in hot state delivery, Leng Zha(allocated) to heat treatment delivery.