Our company manufactures various kinds of diameter (219mm--1220mm) and wall thickness (6mm--60mm). Not only base on ISO9001-2000 series, but also passed the certification of API. And the annual production capacity reaches 200000tons, the quantities of export is 80000tons 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.