Material: A105; 304/304L316/316L; A182 P11; P22, ect Used for Joint of Pipe with Fittings, and Shipbuild Poject. Size:1/2"-24" ASME B16.5 Weld Neck RF/RTJ SCH 40 Flange Size: 1/2"-24" Rating Pressuring: 150#; 300#; 600#; 900#. W.T.: SCH40-SCHXXS1. Seal Surface: FF; RF; MFM; TG; RJ; RTJ2. Material:Carbon Steel:ASTM A105,20#,Q235,16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2,ASTM A694 F42, F46,F48, ...