This standard applies to the design, construction and acceptance of the new part of the expansion and reconstruction of the new oi

This specification is specially formulated to standardize the selection of beach environmental condition parameters and the calcul

This standard is applicable to the overall or partial stress relief of welding stress of metal equipment and the stress relief of

This standard is applicable to the leakage detection of pipelines and vertical cylindrical steel storage tanks (or sockets) for tr

This specification is applicable to the construction and acceptance of oil and gas pipeline crossing projects, and other pipeline

This standard is applicable to the internal surface of steel pipe welds with various specifications and nominal diameters of 200-6

This standard applies to the on-site integral extrusion coating of cement mortar lining by air delivery method for steel pipes wit

This standard is specially formulated to ensure the construction quality of the pneumatic extrusion coating of liquid coatings on