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  2023 Moscow NEFTEGAZ booth 74CIPUE-15, Haihao Group welcomes you

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  EN10253-2 standard with our complete range of high-quality pipe fittings

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  Difference between ANSI /ASME B16.9 pipe fittings and ANSI /ASME B16.11 pipe fittings

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  MSS SP-97 ASTM A105 sockolets for Turkish customer

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  Quality inspection for ASTM A403 Gr.WP304/304L ASME B16.9 pipe fittings and A182 Gr.F304/304L flanges

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  Low temperature corrosion resistance ASTM A403 Gr.WP304/304L ASME B16.9 pipe fittings and A182 Gr.F304/304L flanges

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  ASTM A403 Gr.WP304/304L ASME B16.9 pipe fittings and A182 Gr.F304/304L flanges pass quality inspection

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  Haihao Group successfully supplied LR B16.9 A234WPB carbon steel elbows

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  Russia Restarts ALNG2 Project

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  The role of oil casing in oil drilling

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  Saudi customers order large diameter pipe fittings

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  Display of pipeline products ordered by Saudi customers

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  What matters needing attention when large diameter straight seam steel pipe installation?

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  Structure of metal bellows

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  What aspects should be considered in the design of petrochemical pipelines?

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  Shipping pipe fittings for Bulgarian customer

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  CNOOC and Zhenhua Oil signed a general drilling contract in Iraq

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  Technical requirements for flanges of natural gas processing FPSO

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  Haihao participates in the supply of the world’s largest natural gas processing FPSO

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  Celebrate the 40th anniversary of Haihao Group

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  Delivery of steel pipes from Dutch customers

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  What are the quality inspections of seamless steel pipes?

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  Characteristics of deep sea pipeline steel pipe

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  Difference between oil pipeline and natural gas pipeline