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  Spanish customer order EN 10253-2 90-degree LR elbow P265GHH for ship’s fire-fighting piping system

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  Haihao Group – your trusted partner for ABS certified pipe fittings

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  Exploring the potential impact of room-temperature superconductivity on pipe fittings

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  Strategic collaborations Haihao Group’s manager explores groundbreaking solutions at China First Heavy Industries

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  The difference between seamless tee and welded tee in the production process

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  Haihao Group provides high quality solutions to ensure the safety of FPSO pipeline systems

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  Haihao Group passes rigorous third-party inspection for coating perfection

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  The difference between PE and BE ports in the pipeline

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  Haihao Group delivers pipe fittings with unparalleled mechanical strength for UAE oil projects

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  Enhancing connectivity through one belt one road: Haihao Group empowering southeast Asia’s waterworks projects

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  Haihao Group empowers Novatek’s “Arctic LNG-2” project with premium pipe fittings

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  GR WPHY60 the powerhouse material for pipe fittings

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  Discover the exceptional qualities of ASTM A182 F5 material

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  ASME B18.31.2 stud bolt quality inspection

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  Production process of ASME B18.31.2 stud bolt from Haihao Group

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  Haihao Group utilizes advanced three-coordinate measuring machine ensuring precision and quality

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  Haihao Group provides a variety of pipe fittings products that meet NACE MR 0103 Standard

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  Groove connection installation process simplicity and efficiency combined

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  Embrace efficiency and versatility with groove connection the future of pipe joining

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  Haihao Group achieves excellence pipe fittings triumph in rigorous thermal oxidation test

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  INTERTEK certification validates Haihao Group’s commitment to excellence

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  The right way to install and maintain tee fittings ensuring a strong connection

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  The manufacturing process of high-quality pipe caps

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  Advantages of Russian customers ordering 3PE coated pipes