Report - BONT Forge steel valves · 2020. 2. 19. · DIN 3239 (Code: 6032 - Piston Check Valve Socket Weld Butt Weld Butt weld (S.W.) (B.w.) (B.w.) OSW) BWA) BWD) 15 17 20 ... 15A ASTM Fll

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