Hebei Zhongyuan Steel Pipe Manufacturing Co., Ltd is the professional manufacturer of steel pipe. The company was set up in 1993, covering 340 thousand square meters. The company owns total assets up to 38 million RMB and 1,000 workers. There are 8 sets of SSAW pipe production line, 3 sets of hot-rolling steel pipe (stretch reduction when heat temperature to 950℃ wholly ) production line and 18 sets of hot-expanded production line . Spiral submerged-arc welded steel pipe: which the diameter isΦ219mm-Φ1820mm，wall thickness is 6mm-14mm .And hot-rolling steel pipe (stretch reduction when heat temperature to 950℃ wholly ) which diameter isΦ32mm-Φ630mm,wall thickness is 3.5mm-12mm and material is 20# are our primary products. Our products are also sold to over 28 provinces , cities and autonomous regions in the country and export to South-east Asia. The hot-rolling steel pipe (stretch reduction when heat temperature to 950℃ wholly ) belongs to national key high-tech developing project and national planning project of 揟orch? which first set up in the same field in domestic . We carry out the rules of API SPEC 5L、5CT 、GB/T9711.1、SY/T5037、GB/T8163、GB/T8162.