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JIS G3461 STB 340 seamless steel pipe is used for the heat exchange tubes inside and outside the boiler, such as water pipe, smoke pipe, superheater tube, air preheater tube, and heat exchanger tube, condenser tube, catalytic pipe, etc. in chemical and pe

DIN St44.4 seamless steel pipe is a kind of round and round steel pipe. DIN St44.4 seamless steel pipe is composed of hollow section seamless straight section steel. Hot rolled, or cold drawn, on a solid ingot or through a cold drawn tube.

DIN 1628 St52.4 seamless pipe is also called low carbon steel pipe. DIN 1628 St52.4 seamless pipe is a kind of low-cost and low-carbon steel pipe with the highest carbon content of 0.22% and the highest manganese content of 1.60%. It is easy to form. Thes