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Critical Pressure Connections: Haihao Group Dispatches Heavy-Duty Flanges and Blinds to Singapore
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, ... -
Securing Sub-Zero Line Isolation: Haihao Group Dispatches ASME B16.48 Blanks and Spacers to Russia
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 ... -
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 ...
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.
