China Zhonghai Steel Pipe Manufacturing Co, .Ltd is a professional manufacturers specializing in producing seamless pipe,API steel pipe,carbon steel pipe,API seamless pipe,black pipe,steel seamless pipe,steel pipe sizes,large steel pipe,smls steel pipe,steel pipe supplier,spiral pipe,welded pipe,steel pipe fittings,steel pipe supplier,black steel pipe.
Our company manufactures various kinds of diameter (21.3mm--965mm) and wall thickness (2mm--50mm). Not only base on ISO9001-2000 series, but also passed the certification of API,CE and CCS. And the annual production capacity reaches 250000 tons, the quantities of export is 100000 tons per year.
They are applicable to extraction and processing of petroleum and natural gas, pipeline transportation, machine-building industry, boiler making, and the big construction item.