China Zhonghai Steel Pipe Manufacturing Corporation established in 1997.It is one of the biggest pipe producers in Great China. Owned more than 1000 employees, the area is 135000 square meters. Owning 6 large standard workshop, one set 180mm seamless puncher, which could manufacture various kinds of diameter and wall thickness from 21.3mm965mm.The devices are one of the largest seamless and the hot-rolled machine in China. In addition, we possess 9 sets including the spiral steel pipe machine ,hot-rolled as well as the hot-sinking mill equipment. The annual production capacity reaches 250000T,the quantities of export is more than 100000T per year.Our company is generally accepted by huge projects and trade companies,So we are the first be choiced of the steel pipe customers.    In order to improve the efficiency and provide convenience for clients,our company set up seven sub offices: Zhonghai Guangdong International Sales Company,Zhonghai Hong Kong International Sales Company,Zhonghai Shanghai International Sales Company,Zhonghai Beijing International Sales Company,Zhonghai Guangxi International Sales Company,Zhonghai Shijiazhuang International Sale Company.   Our products not only based on ISO9001-2000 seriesbut also passed the certification of API,CE and CCS.Our featured products are hot rolled big size seamless pipe,Diameter between 6\"and 38\",spiral pipe.between 6\" to 48\",wall thinkness from 6mm-60mm. These products are widly used in extraction and processing of petroleum and natural gas,pipeline transportation, machinofacture, boilermaking and the big construction item.Our team win a confidence vote for the strict management system ,advanced production craft ,high-quality sales team,accurate inspection process and clearly financial management.    We warmly welcome friends from both home and abroad to negotiate for mutual benefits