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Type: Socket Welding Flange (SWRF) Materials: Stainless Steel, Alloy Steel, Carbon Steel ASTM A105 A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2 A516.60 A694 (F42, F46, F48, F50, F52, F56, F60, F65, F70) A182 ...