Company Description
Kingruiman (Beijing) International Investment C... can produce qualified steel pipes of Q235, Q345 and X42-Ã?70 grades according to the standards of petroleum industry, national regulations and the API spec 5Lstandards of American Petroleum , coal gas, natural gas. Heat power. Etc. The company has passed ISO 9002 quality attestation in 2000, and switched from 9001 to2000 successfully, in August. 2003, it has passed API attestation by American Petroleum Institute and was authorized to use its symbol