Haihao Group has successfully completed the production and shipment of carbon steel weld neck flanges, stainless steel spiral wound gaskets, and a spectacle blind flange to a valued customer in Côte d’Ivoire. This combined supply of ASTM A105 WN flanges and SS316 spiral wound gaskets ensur ...

Haihao Group has successfully completed the production and delivery of flat face plate flanges (FF) for a customer in Australia. The flanges were manufactured according to project drawings with precise dimensional control, ensuring compatibility with the client’s piping system requirements ...

Haihao Group has successfully completed the delivery of ASTM A694 F65 weld neck flanges for a customer in Singapore. The flanges were manufactured in strict accordance with ASME B16.5 and NACE requirements, meeting the demanding standards of marine and energy-related applications. ASTM A694 F65 ...

Haihao Group has successfully completed the production and shipment of API 6A 6BX duplex stainless steel flanges for a valued customer in the United Kingdom. The order includes high-pressure weld neck RTJ flanges and RTJ spectacle blinds, manufactured from ASTM A815 UNS S31803 duplex stainless s ...

Haihao Group has successfully completed the shipment of a batch of carbon steel flanges to a customer in the United Arab Emirates. The order includes Slip-On (SO) flanges and Welding Neck (WN) flanges manufactured from ASTM A105 material and produced in full compliance with ANSI / ASME B16.5 sta ...

Haihao Group recently completed the production and shipment of ASTM A350 LF2 CL1 welding neck flanges to a valued customer in Kazakhstan. These flanges were manufactured in accordance with ASME B16.5 and designed for low-temperature and sour service applications. The order included multiple size ...

Haihao Group has successfully completed the production and shipment of 6 inch Class 150 ASTM A182 F316L blind pipe flanges to a customer in Kazakhstan. Manufactured in strict accordance with ASME B16.5, these stainless steel blind flanges are designed for sour service environments and supplied w ...

Haihao Group has successfully completed the shipment of a batch of ASME B16.5 carbon steel flanges to a customer in Malaysia. The order includes weld neck flanges, blind flanges, and socket weld flanges, all manufactured from ASTM SA105 material and designed for Class 150 pressure rating piping ...

NEFTEGAZ 2026 is approaching, and Haihao Group is pleased to invite global oil and gas professionals to meet us in Moscow this March. Together with Ganyeah Group and FNS Pipeline Technology Co., Ltd., we will present a strong and coordinated presence at one of the most influential energy exhibit ...

Haihao Group has successfully completed the shipment of high-pressure blind flanges to a customer in Russia. The products were manufactured in strict accordance with ASME B16.5 and produced from ASTM A350 Grade LF2 Class 1, ensuring reliable performance in low-temperature and high-pressure servi ...

Haihao Group recently completed a shipment of DIN 2576 stainless steel flanges for a customer in Vietnam.The order included blind flanges and slip-on flanges (SO) with flat face (FF) design, manufactured from AISI 316L stainless steel and supplied in accordance with DIN 2576 PN10 requirements. T ...

Haihao Group recently completed a shipment of carbon steel blind spades for a customer in Singapore.The order covered a wide size and pressure range, manufactured strictly in accordance with ASME B16.48, using ASTM A105N carbon steel with flat face (FF) sealing surfaces. These blind spades are d ...