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ASTM A105N WN Flange for Iraq Project: 1″ Class 150 RF, SCH 160
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 ... -
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 pipe fitting department is the steel pipe fitting division of Hebei Haihao High Pressure Flange Pipe Fitting Group Co.,Ltd, we manufacture ,supply and serve our clients all over the world in the steel pipe fittings field, especially the butt welding pipe fittings.
Hebei Haihao pipe fitting plant is established in 1988.At the beginning , we start production from carbon steel elbows ,then steel pipe tees years later.In the 21 century, we establish the new factory to produce the stainless steel pipe fittings. Now our pipe fittings plants can manufacture most kinds of steel pipe fittings used in industry pipeline.
