1、SPECIFICATION
DN10——DN1000 (SEAMLESS)
DN300——DN2000 (SEAMLESS)
2、WALL THICKNESS：1.5——150
3、MATERIAL: CARBON STEEL, ALLOY STEEL, STAINLESS STEEL
4、OPERATIVE NORM
GB, ELECTRICAL POWER, CHEMISTRY,PETROLEUM,NATURAL GAS ECT INDUSTRY STANDARD, ASME STANDARD
