Hebei Lufeng Piping Equipment Co., Ltd.
Carbon /Alloy steel pipes, ERW steel pipes, API 5L LSAW&SSAW, ASME B16.9/MSS SP-75 BW pipe fittings, ASME B16.5/16.47 steel flanges, ASME B16.11/MSS SP-97 forged fittings, Knife gate valves, Butterfly
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肘- 90のASTM A234の等級WPBの標準厚手、Buttweld端ごとの炭素鋼、ASME B16.9ごとの、ASME B16.25ごとの、MSS SP 25ごとに印が付いている長い半径、継ぎ目が無い