Seamless steel tube The main products of the company are the seamless steel pipes, using the advanced heat and cold processing technology, divides two kinds of hot rolling and cold draw. The raw materials are 10#~45# carbonized structural steel, the low-alloy steel, the bearing steel, and so on. The company can produce many kinds of seamless steel pipes of f+ 12mm~f+70mm*2mm~13mm; f+89mm~f+168mm*4mm~20mm.