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  ASTM A105 steel flange

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  The introduction about forged steel blind flange and plate cut blind flange

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  Precision tubes order for GPC are inspected in Haihao Group

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  Haihao Group will attend the 17th Russia International Oil and Gas Equipment and Technology Exhibition

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  JIS B2220 5K Weld Neck Flange

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  New Tube sheets for heat exchangers are going to finished in Haihao Flange Factory

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  What is the difference between working,burst and proof test pressure

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  JIS B2220 5K Blind Flange

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  The EU imposed anti-dumping duties for stainless steel pipes and fittings from China

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  JIS B2220 5K Slip On Hubbed Flange

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  JIS B2220 5K Slip On Plate Flange

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  Haihao Group finished the customized flange collar order

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  JIS B2220 Integral Flange

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  Haihao Factory is producing 5D 180 degree pipe bends for Pakistan Petro Pipeline

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  JIS B2220 Threaded Flange

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  Haihao Flange Factory finished high pressure and large size flanges on time

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  JIS B2220 Socket Weld Flange

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  The 50D radius pipe bends used for steel structure finished in Haihao Group

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  JIS B2220 Blind Flange

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  Hebei Haihao Group is working hard to finish orders before Chinese New Year

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  JIS B2220 Weld Neck Flange

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  Client inspect tube sheets quality and production In Hebei Haihao Group

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  JIS B2220 Slip On Hubbed Flange

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  The information about JIS B2220 flange products tolerance