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Engineering for the Arctic: How Haihao Group Delivered Low-Temperature Flanges for Russian Energy Infrastructure
In sub-arctic energy extraction and processing, ordinary carbon steel reaches its limit long before the thermometer hits its lowest point. As temperatures drop below -20°C, conventional flange materials risk micro-fissuring and catastrophic brittle failure under pressure fluctuations. Addressing ... -
High-Pressure Sour Service Integrity: Haihao Group Dispatches Duplex Weld Neck Flanges to UAE
Haihao Group has completed manufacturing, full non-destructive testing, and export preparation for a specialized lot of heavy-duty duplex stainless steel flanges supplied to a leading energy operator in the United Arab Emirates. Engineered to deliver leak-proof metal-to-metal sealing under high ... -
Positive Isolation in Severe Media: Haihao Group Dispatches Inconel 625 Spectacle Blinds to Singapore
Haihao Group has completed manufacturing, precision machining, and export clearance for a specialized order of high-nickel nickel-chromium alloy spectacle blinds destined for a high-specification offshore processing facility in Singapore. Engineered to deliver 100% positive shut-off and absolute ... -
Haihao Group Dispatches ASTM A694 F65 Flanges to Singapore
Haihao Group has completed the dispatch of a high-yield forged flange consignment destined for an offshore production and topside processing expansion in Singapore. Built to ASME B16.5 dimensions, this shipment features 2″ Nominal Pipe Size (NPS) Class 600 Standard Wall (STD) Weld Neck Rai ...


























