Flange manufacturer / supplier in China, offering Slip on So Flanges Fittings Piping Materials Carbon Steel ASME En1092-1, Slip on Flanges Carbon Steel A105 A350 Lf2 ASME B16.5 Piping Fittings, En1092-1 DIN Carbon Steel P245gh P250gh Slip on Flanges So Pipline Fittings and so on.