Haihao Group Supplies A234 WPB Butt Weld Pipe Fittings with 3LPE and Galvanized Coatings to Indonesia
Haihao Group has successfully completed the delivery of carbon steel butt weld pipe fittings for an Indonesian project. The shipment includes A234 WPB elbows, concentric reducers, and tees, manufactured in accordance with ASME B16.9 and coated with 3LPE or hot-dip galvanization for superior corrosion protection.
This batch of pipe fittings was specially customized to meet the client’s project requirements for pipeline integrity and anti-corrosion performance in high-humidity environments typical of Southeast Asia.

A234 WPB Butt Weld Pipe Fittings with 3LPE ready for shipment
Delivered Products Overview
The products supplied to Indonesia include:
- 90° Long Radius Elbows (A234 WPB, ASME B16.9) – sizes DN65 to DN350, seamless, with options for 3LPE coating or galvanized finish, thickness S-40.
- 45° Long Radius Elbows (A234 WPB, ASME B16.9) – DN100 to DN200, seamless, available with 3LPE corrosion-resistant coating.
- Concentric Reducers (ASTM A234 Gr.WPB, ASME B16.9) – DN65×50 to DN350×200, seamless, in black, galvanized, and 3LPE coated finishes.
- Equal and Reducing Tees (A234 WPB, ASME B16.9) – DN80 to DN200, seamless and coated, in S-40 wall thickness and SMLS construction.
Each fitting was precisely manufactured to ensure accurate dimensions, smooth welding ends, and high pressure tolerance, guaranteeing safe performance during pipeline installation and operation.
High-Quality Coatings for Corrosion Resistance
To ensure long-term durability, Haihao applied advanced coating technologies to the fittings:
- 3LPE (Three-Layer Polyethylene) Coating – offering excellent adhesion and resistance against moisture, soil, and chemical corrosion, ideal for underground and subsea pipelines.
- Hot-Dip Galvanized Coating – providing strong protection against oxidation and rust in above-ground and coastal installations.
These coatings enhance the lifespan and performance of A234 WPB fittings, making them suitable for oil & gas, petrochemical, and water transmission applications in tropical climates.
Commitment to Quality and Standards
All fittings supplied are fully compliant with ASME B16.9 and ASTM A234 WPB material standards, accompanied by EN10204 3.1 mill test certificates.
Quality assurance processes include:
- Visual, dimensional, and non-destructive testing (NDT)
- Hydrostatic pressure testing
- Surface coating inspection and thickness measurement
- Marking and traceability according to international standards
Haihao Group ensures that every product meets international quality and safety requirements, delivering reliable and traceable pipe fittings to global partners.
Haihao Group: Trusted Pipe Fitting Manufacturer for Global Projects
With decades of manufacturing experience, Haihao Group has supplied high-performance butt weld fittings and flanges to more than 100 countries, including Indonesia, Singapore, and the Middle East.
The company continues to support international energy and infrastructure projects with customized carbon steel piping solutions, ensuring reliable service and timely delivery.
Haihao Group – Your Reliable Partner for A234 WPB Butt Weld Pipe Fittings and Complete Piping Solutions.
