• Haihao Group keeps up with raw material market trends2024-03-28
• Diversifying pipeline solutions: Haihao Group’s expertise in welding and surface treatment2024-03-27
• The difference between plastic-coated pipes and 3PE anti-corrosion steel pipes2024-03-25
• Method and significance of chemical composition analysis of steel pipe2024-03-21
• The importance of EN10204 3.2 certification provided by Haihao Group2024-03-20
• Unveiling the excellence of ASME B16.5 RF A350 LF2 CL1 weld neck flange2024-03-19
• Factors affecting magnetic particle testing sensitivity2024-03-18
• Haihao Group brings you a weekly review of the raw material market2024-03-15
• Haihao Group warmly welcomes customers from all over the world to visit and communicate2024-03-15
• Haihao Group’s anti-corrosion measures for submarine stainless steel pipelines2024-03-14
• Select 7 common pipe connection methods according to your needs2024-03-13
• Solution to corrosion challenges of duplex 2205 stainless steel2024-03-11
• Weekly overview of raw material market (February 24th – March 1st)2024-03-08
• Discovering the main materials of galvanized steel pipes2024-03-06
• Haihao Group monitors changes in raw material market2024-03-05
• Exploring eddy current testing in pipeline systems2024-03-04
• Various reducing tee fittings produced by Haihao Group2024-03-01
• One-week review of the steel raw materials market (February 17-February 23)2024-02-29
• Factors affecting the corrosion resistance of stainless steel and treatment methods after rusting2024-02-28
• Exploring two technical paths for offshore wind energy development2024-02-27