Haihao Group Delivers ASTM A234 WPB Carbon Steel Pipe Fittings for Indonesian Industrial Project

Haihao Group has successfully dispatched a full range of ASTM A234 WPB carbon steel butt weld fittings to an Indonesian client for use in a major industrial pipeline project.
The order includes elbows, reducers, and tees manufactured in accordance with ASME B16.9, featuring seamless construction and protective coatings such as 3LPE and hot-dip galvanization to ensure excellent corrosion resistance.

This delivery reinforces Haihao Group’s reputation as a trusted global supplier of carbon steel fittings, supporting international oil, gas, and infrastructure projects.

A234 WPB Butt Weld Pipe Fittings with 3LPE ready for shipment

Detailed Product Supply

The shipment to Indonesia covers multiple types and sizes of fittings, including:

• 90° Long Radius Elbows (ASTM A234 WPB) – DN65 to DN350, seamless, available in standard black, galvanized, and 3LPE-coated finishes for underground or offshore pipelines.
• 45° Long Radius Elbows (ASTM A234 WPB) – S-STD wall thickness, precisely machined for high-pressure and fluid transport systems.
• Concentric Reducers (ASTM A234 Gr.WPB) – DN65×50 to DN350×200, seamless and fully compliant with ASME B16.9 dimensional tolerances.
• Equal and Reducing Tees (ASTM A234 WPB) – DN80 to DN200, S-40 wall thickness, designed for smooth flow distribution in process pipelines.

All fittings were produced in strict accordance with the client’s technical specifications and were subjected to comprehensive inspection procedures before shipment.

Advanced Surface Coating Solutions

Given Indonesia’s tropical climate and exposure to coastal environments, Haihao Group applied high-performance anti-corrosion coatings to ensure durability and reliability:

• 3LPE Coating (Three-Layer Polyethylene) – offering superior barrier protection against soil and water corrosion, commonly used in buried pipelines.
• Hot-Dip Galvanizing – forming a strong zinc layer that resists oxidation and rust in humid or saline environments.

These coatings significantly extend the service life of carbon steel fittings and guarantee long-term performance in oil, gas, and water pipeline networks.

Quality Assurance and Testing

Every product delivered was accompanied by a complete EN10204 3.1 inspection certificate, confirming compliance with ASTM and ASME standards.
Quality verification included:

• Material identification and chemical composition testing
• Dimensional inspection and hydrostatic testing
• Ultrasonic and visual examinations (UT & VT)
• Coating thickness measurement and adhesion checks

Haihao Group’s quality control department ensures that each fitting meets both international standards and client expectations before dispatch.

Commitment to Global Clients

As a leading pipe fitting manufacturer in China, Haihao Group continues to serve clients worldwide with customized and reliable pipeline components.

The successful delivery to Indonesia once again demonstrates Haihao’s capability in handling complex international orders, combining technical expertise, precise manufacturing, and professional logistics management.

From raw material selection to final inspection, every step reflects Haihao Group’s dedication to quality, precision, and long-term customer trust