China Carbon Steel, ASTM A694 F52, Welding Neck, Rtj, 1500 Lb, to ASME B16.5, Find details about China Slip-on RF Flange, Welding Neck F Std Flange from Carbon Steel, ASTM A694 F52, Welding Neck, Rtj, 1500 Lb, to ASME B16.5