Haihao Group Supplies Carbon Steel Flanges to Vietnam Energy Project

Haihao Group has successfully supplied a complete range of carbon steel flanges to a key energy project in Vietnam, reinforcing our reputation as a trusted global flange manufacturer. The delivery includes both blind flanges (RF type) and weld neck flanges (RF type) manufactured from SA-105 and SA-516 Gr.70 materials, meeting ASME B16.5 and ASME B16.47 Series A standards.

The shipment covers a wide variety of sizes and pressure classes, including 1″ to 40″, with pressure ratings up to 300# and schedules such as SCH XS and SCH 60. Every flange was precisely machined and inspected to ensure dimensional accuracy, smooth surface finish, and perfect fit-up during installation.

SA-105 blind flange manufactured by Haihao Group

All products were delivered in heat-treated condition, complete with EN 10204 3.1 inspection certificates. The quality verification process included chemical composition analysis, mechanical testing, ultrasonic inspection (UT), and hardness testing, ensuring compliance with both ASTM and customer project requirements.

The SA-516 Gr.70 blind flange (40″ 300#) was manufactured for high-pressure and high-temperature applications, offering exceptional strength and corrosion resistance. Meanwhile, SA-105 weld neck flanges are ideal for welded pipeline systems requiring reliable sealing and structural integrity.

With advanced forging, machining, and testing facilities, Haihao Group provides customized flange solutions for oil, gas, power generation, and offshore projects worldwide. Our strict adherence to international standards and third-party certifications guarantees the highest level of product reliability and safety.