... 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47, ... Authentication of API and became a member of first – grade supply network of State Power Corporation and China National ... or as for clients'requirements applicationPetroleum, chemical, machinery, electric power, shipbuilding, papermaking, construction, etcSpecial design available as the ...