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  1. Naminima

    Material A216,

    Dear all, I got a problem, our sepc says : - 4" 300# Production Choke Valve, RF (Angle) - ASTM A-216 Gr. WCB, Stl, Flg’d, Our supplier uses CS A1020 (Casting) to produce material up to A 216 WCB, is this normal practice as chemical compositions are different, shouldn't CS A216 material be...

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