... , Q235, Fe310, Fe360, St33, St37-2, SS330, SS400, S235, S275, S355, ASTM 1010, ASTM 1017, ASTM 1020, ASTM A36StandardManufactured to meet ... , seamless pipe, square steel tubes, rectangle steel tubes, spiral steel tubes and stainless steel piping. Meanwhile, it also markets steel sheet, steel flat and other various ...