Forged WELD NECK FLANGE (WN Flange) Manufacturer Changrun Supplies Forged WN Flanges, DN90 (3-1/2 Inch), 300 LB (PN50), Wall Thickness: SCH 60. Flange face: RF, FF, RTJ, TF, GF. Material: ASTM A694 F60. Certificates: CE, ISO, PED, TS, BV, CQC.
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