widely used in oil and gas industries, such as drill pipe, petroleum oil pipe, oil and natural gas and so on.

Seamless steel ingot is made of perforated or solid through the capillary tube, and then by the hot-rolled, cold-rolled or cold call is made. Seamless steel pipe with a hollow cross section, a large number of channels for transporting fluids, such as steel pipe and solid steel bar, compared with the same torsional strength in bending, lighter, is an economic cross-section steel, widely used in oil and gas industries, such as drill pipe, petroleum oil pipe, oil and natural gas and so on.

Product Name	Grade	Standard	Visual and Dimensional	Application
Casing and Tubing	J55,K55,N80,L80,C90,C95,P110	API SPEC 5CT,ISO11960	60.23-508.00*4.24-16.13	Tubing used in oil wells to extract oil or natural gas, oil and gas wells for wellbore casing.
Linepipe	A,B,X42,X46,X52,X56,X60,X65,X70,X80	API SPEC 5L,GB/T9711.1,GB/T9711.2	32-1240*3-100	For oil and gas industry, oxygen, water and oil in the short-distance transport.

Seamless steel Pipe