The 24" straight welded pipe on-line machine in our company, also the first imported one in China, was introduced from Jang Wuel Steel Machinery Co.,LTD, which is equipped with on-line furnace for hard meltdown and heat treatment. It is far better than the UOE welding fabrication whatever in the field of welding line, roundness and straightness which directly improves the finished product craft of domestic heavy caliber and greatly meets the demands in Petrolane, Chemical, Dyeing and Finishing areas.