Large-diameter pipeline isolation for UAE oil and gas infrastructure demands heavy-duty blind flanges with verified low-temperature toughness and full non-destructive examination. Haihao Group has completed fabrication and shipment of a mixed batch of A694 F65 blind flange and A105N weld neck fl ...

Industrial piping infrastructure projects in France require robust, fully traceable flanges built to ASME B16.5 specifications for stable long-term operation. Haihao Group has finished inspection and shipment of a mixed batch of carbon and alloy flanges for our French client, combining ASTM A105 ...

Low-temperature piping projects across Indonesia’s oil and gas sector often require mixed sets of standard and drawing-specified flanges to match varied pressure classes and pipe schedules. Haihao Group has completed production and shipment of SA350 LF2 CL1 WN flange assemblies for an Indo ...

Precise pipeline isolation and standardized component identification are critical for stable operation of petrochemical and energy piping systems in Singapore. Haihao Group has completed professional fabrication and delivery of custom A350 LF2 spectacle blind flanges, tailored to meet local indu ...

Haihao Group has successfully shipped custom SA694 F65 blind flange units tailored to client drawings for an Indonesian industrial pipeline project. Unlike standard stock flanges, this batch features a full flat face design with no bolt holes, manufactured strictly per custom dimensional and mec ...

Haihao Group has delivered a full range of ASTM A350 LF2 CL1 flange assemblies for a low-temperature process piping project in Singapore. This comprehensive shipment covers multiple flange types, pressure classes and surface finishes, strictly fabricated in accordance with ASME B16.5 and ASME B1 ...

The 12th International Tube & Pipe Industry Trade Fair (Tube China 2026) officially opened today at the Shanghai New International Expo Centre (SNIEC), bringing together pipeline operators and fluid handling professionals from across the globe. Located at Booth W2A02, Haihao Group is display ...

Haihao Group recently completed production and shipment of custom 316L spiral wound gaskets for an industrial project in the United Arab Emirates. Unlike standard stock gaskets, this batch of 316L spiral wound gaskets was fully fabricated according to the customer’s technical drawing, with preci ...

Haihao Group has finished manufacturing and dispatched ASME B16.48 line spade blinds for a Russian oil & gas pipeline project. These line spade blinds are used for positive isolation of piping systems during maintenance and shutdown operations, fabricated from ASTM A240 Type 316 stainless st ...

Haihao Group has finished production and shipment of ASME B16.20 oval gasket for a Russian high-pressure piping project. This batch of RTJ type oval gaskets is sized at 8 inch, ring groove number R49, rated for Class 900 service, manufactured from S30900 alloy material. RTJ oval metal gaskets ar ...

Operating processing facilities in northern Eurasia requires specialized piping components engineered to handle severe sub-zero thermal stress without compromise. Large pressure fluctuations combined with arctic ambient conditions place heavy demands on flange sealing faces and weld hub transiti ...

A full set of ASME B16.5 150CL flanges has left Haihao Group’s workshop, ready for delivery to a piping project in Kenya. This order combines multiple flange types and two material grades, tailored to different pipe connection points on the site. The project team selected ASME B16.5 150CL flange ...