Haihao Group Delivers A234-WPB Butt Weld Pipe Fittings to Singapore Client
Haihao Group has successfully supplied a complete range of carbon steel butt weld fittings to a valued client in Singapore. The delivery includes A234-WPB long radius elbows, concentric reducers, and tees manufactured in full compliance with ASME B16.9 and EN10204 3.1 certification requirements.
This shipment demonstrates Haihao Group’s continuous commitment to providing high-quality pipe fittings that meet global standards for oil, gas, and energy industries.
Delivered Products Overview
The supplied products include:
- 90° Long Radius Elbows (A234-WPB, ASME B16.9) – DN25 to DN300, seamless construction, wall thickness from S-80 to S-STD.
- 45° Long Radius Elbows (A234-WPB, ASME B16.9) – DN250, seamless, standard wall.
- Concentric Reducers (A234-WPB, ASME B16.9) – DN200x150 to DN300x250, seamless, S-STD x S-STD.
- Equal and Reducing Tees (A234-WPB, ASME B16.9) – DN200 to DN300, seamless, standard wall thickness.
All fittings were produced with precise dimensional accuracy, smooth internal surfaces, and uniform wall thickness, ensuring excellent performance under high-pressure pipeline systems.
Quality Assurance and Certification
Each batch of fittings was accompanied by complete Mill Test Certificates (MTCs) under EN10204 3.1, certified by DNV.
The documentation includes:
- Raw Material Certificates verifying chemical composition and mechanical properties.
- Hardness and Heat Treatment Reports specifying the heat treatment type and cooling medium.
- Ultrasonic Testing (UT) Reports confirming defect-free seamless integrity.
- Full compliance with NACE MR0175/ISO 15156, ensuring suitability for sour service environments.
This rigorous inspection and documentation process guarantees that Haihao’s A234-WPB pipe fittings deliver consistent reliability and durability for demanding applications.
Commitment to Global Projects
From China to Singapore, Haihao Group continues to support international energy and infrastructure projects with customized piping solutions, strict quality control, and timely delivery.
Our butt weld pipe fittings are widely used in petrochemical plants, refineries, and offshore facilities, trusted by clients worldwide for their proven performance and traceability.
Haihao Group – Your Reliable Partner for ASME B16.9 butt weld fittings and custom piping systems for global energy industries.

