Haihao Group secures large flange order from a Qatari client
Haihao Group has recently received a significant flange order from a Qatari client, marking another milestone in the company’s global market expansion. The order consists of nearly 10,000 carbon steel flanges that comply with ASME B16.5 and BS4504 standards, further reinforcing Haihao Group’s reputation as a trusted supplier in the international pipeline and fittings industry.
Order Details
The client has ordered a diverse range of Slip-On (SO), Blind (BL), Threaded (TH), and Weld Neck (WN) flanges with Raised Face (RF) designs. These flanges are manufactured using ASTM A105 carbon steel, a material known for its excellent mechanical properties, high durability, and suitability for pressure piping systems. To enhance corrosion resistance and ensure longevity, all flanges are coated with a black matte anti-rust paint.

ASME B16.5 Weld Neck Flanges
Commitment to Quality and Standards
Haihao Group strictly adheres to international standards to meet the demanding requirements of its global customers. ASME B16.5 and BS4504 are widely recognized standards that ensure flanges are manufactured with precise dimensions, pressure ratings, and material properties. The company implements rigorous quality control measures, including:
Material Testing: Verifying the chemical composition and mechanical properties of ASTM A105 carbon steel.
Dimensional Inspection: Ensuring precise machining and compliance with standard tolerances.
Surface Treatment & Coating: Applying protective coatings to enhance durability and prevent oxidation.

BS4504 ASTM A105 weld neck flanges
Strengthening Global Market Presence
This large-scale order highlights Haihao Group’s competitive strength in the global flange market, particularly in the Middle East. Qatar, as a key player in the oil, gas, and petrochemical industries, requires high-quality pipeline components for its infrastructure projects. By successfully fulfilling this order, Haihao Group continues to expand its footprint in the Middle Eastern market, demonstrating its ability to meet large-scale industrial demands.
Haihao Group remains committed to delivering high-quality piping solutions to clients worldwide. With its advanced manufacturing capabilities, strict quality control, and customer-focused service, the company is well-positioned to support global infrastructure and energy projects. This successful collaboration with the Qatari client further solidifies Haihao Group’s reputation as a leading supplier of flanges and pipeline components. Email:sales@haihaogroup.com