Cangzhou Ritia Pipe-Fittings Manufacture Co., Ltd.
WELD NECK FLANGE(WN)
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weld neck carbon steel flange -
ANSI B16.5 weld neck butt weld flange -
ASTM A105 weld neck carbon steel flange -
ANSI DIN JIS standard weld neck carbon steel flange -
150#weld neck carbon steel flange
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class 150LB weld neck carbon steel flange
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class 300LB weld neck ASTM A105 flange
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WN RF carbon steel flange