Operating high-pressure gas trunklines and processing manifolds across the Middle East requires flanged connections that handle extreme mechanical loads without risk of environmental stress cracking. When linking high-yield pipeline steel with process skids, flanged joints must balance structura ...

Operating high-pressure processing lines in offshore marine skids and subsea tie-ins requires positive fluid isolation hardware that guarantees absolute leak-tight sealing during operational maintenance. In severe-duty environments, standard carbon steel or basic austenitic isolation plates risk ...

Connecting high-pressure topside manifolds, fuel skids, and subsea tie-in loops in Singapore’s marine construction yards demands flanged connections with unyielding mechanical strength and zero-leakage sealing interfaces. Standard lightweight flanges often fail under the severe cyclic stresses, ...

In high-capacity oil and gas processing networks, line maintenance requires positive, zero-leakage fluid isolation. While standard shutdown valves can suffer from seat erosion over time, mechanical line blinds provide an unquestionable physical barrier during equipment servicing, pressure testin ...

Haihao Group recently completed the supply of a 1-inch ASTM A105N weld neck flange for an Iraqi customer. The order was specified for Class 150 service, raised face (RF), Schedule 160, and compliance with ASME B16.5 and NACE MR0175. This order is a good example of a small-diameter flange with a ...

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 ...

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 ...

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 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 ...

Haihao Group has completed the dispatch of a high-specification flange cargo destined for an offshore and onshore gas handling expansion project in the United Arab Emirates (UAE). The shipment features a wide spectrum of pressure classes, ranging from Class 150 up to Class 1500, combining stainl ...

Haihao Group is preparing to meet customers, partners, and industry professionals at THE 12TH ALL CHINA – INTERNATIONAL TUBE & PIPE INDUSTRY TRADE FAIR in Shanghai. From September 21 to September 24, Haihao Group will exhibit together with Ganyeah Group and FNS Pipeline Technology Co., Ltd.  ...

Haihao Group has completed the production and dispatch of a critical shipment of high-yield carbon steel flanges for an offshore-linked pipeline project in the United Arab Emirates (UAE). The shipment consists of large-diameter Weld Neck (WN) and Blind flanges designed for high-stress, high-pres ...