1) size: 1/2" - 48" 2) pressure rate: Class 150~2500 3) standard: JIS,DIN,ASME,JPI,ANSI,BS,etc Size:1/2" NPS TO 144" NPS (DN10-DN3600) Pressure rate:Class150, Class300, Class600, Class900, Class1500, Class2500 Material:Carbon Steel: ASTM A105, ASTM A350 LF1,LF2, CL1/CL2, LF3 CL1/CL2; Stainless Steel: ASTM A182 F304/304L, F316/316L, F316H,F316Ti, F321,F310, F312 Alloy Steel:ASTM A182 F1, F5A , F9, ...