Classfication of seamless pipe

According to the manufacturing process,seamless pipe can be divided into hot-rolled seamless steel tubes and cold-drawn seamless steel pipe two kinds. Cold drawn tube is also divided into circular pipe and shaped pipe.

Cold Drawn Seamless Carbon Steel Tube ASTM A179
Cold Drawn Seamless Carbon Steel Tube ASTM A179

Seamless steel tubes is divided into the following categories because of different purposes:

Seamless steel pipe for structure is mainly used for general structure and mechanical structure.


Hot rolled seamless steel pipe
Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing.

Transmission fluid with seamless steel tubes is mainly used for the transmission fluid on pipeline projects and large equipment.

Low and medium pressure boiler seamless steel pipe is used in manufacturing a variety of structures for low and medium pressure boiler superheated steam pipes, boiling water tube and locomotive boilers, superheated steam pipe, opium pipe, a small smoke pipe and arch brick works of high quality carbon structural steel hot-rolled and cold drawn seamless steel tubes.

High-pressure boiler seamless steel pipe is used for the manufacture of high and above the pressure water tube boiler to heat the surface with high-quality carbon steel, alloy steel and heat-resistant stainless steel seamless pipe.

Seamless steel pipe for high pressure chemical fertilizer equipmentsis is applicable to the operating temperature of -40 - 400 ℃, working pressure of 10 - 30Ma chemical equipment and pipeline quality carbon structural steel and alloy steel seamless steel pipe.

Petroleum cracking seamless steel pipe is for oil smelter boilers, heat exchangers and their transmission fluid pipe.

Geological drilling steel pipe is the core drilling tubes for geological department,which to be used by end-use can be divided into the drill pipe, drill collars, core pipe, casing and precipitation tubes.

Diamond core drill seamless steel pipe is used for diamond core drilling, core rod, seamless steel pipe casing.



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