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 ...

Haihao Group has successfully completed the delivery of a batch of flanges and industrial gaskets for a customer in Singapore. The shipment includes ring joint gaskets (RTJ), spiral wound gaskets, RTJ blind flanges, and RF blind flanges, designed for both standard ASME flange connections and hig ...

Haihao Group has successfully completed the supply of ASME B16.5 flanges, high-strength stud bolts, and industrial gaskets for a pipeline project in Iraq. All products were manufactured and inspected in accordance with international standards and NACE MR0175, ensuring reliable performance in dem ...

Haihao Group has successfully completed the shipment of high-performance threaded and weld neck flanges to a customer in Singapore. The order includes nickel alloy threaded flanges and super duplex stainless steel RTJ flanges, all manufactured in full compliance with ASME B16.5 requirements. The ...

Haihao Group has recently completed the successful delivery of a batch of carbon steel and stainless steel flanges to a customer in Kazakhstan. The order covers multiple flange types and sizes, manufactured in accordance with ASME B16.5 and supplied to meet different pressure ratings and service ...

At Haihao Group, we understand that the integrity of a piping system hinges on the quality of its components. Our recent shipment of ASME B16.5 A105N Jacket Flanges to a prominent client in Dubai underscores our commitment to delivering robust, specification-perfect solutions for global industri ...