Haihao Group Supplies ASTM A234 WPB Pipe Reducers to Vietnam
Haihao Group is proud to announce the successful delivery of a large batch of pipe reducers to a valued client in Vietnam. The order included both concentric reducers (CON reducer) and eccentric reducers (ECC reducer) manufactured in ASTM A234 WPB carbon steel, fully compliant with ASME B16.9 standards and produced in SCH80 wall thickness.
This shipment once again highlights Haihao Group’s ability to provide complete piping solutions for demanding applications in the oil & gas, petrochemical, and power generation industries.

ASTM A234 WPB concentric reducers supplied by Haihao Group
Order Highlights
- Products: Concentric Reducers & Eccentric Reducers
- Material: ASTM A234 WPB (high-strength carbon steel)
- Standard: ASME B16.9
- Size Range: DN15 to DN600
- Wall Thickness: SCH80
- Types:
- Concentric Reducers – providing smooth flow transition between different pipe sizes
- Eccentric Reducers – ensuring proper alignment and preventing air pockets in horizontal pipelines
From DN25 × DN15 reducers for smaller diameter systems to DN600 reducers for large-scale industrial pipelines, this order ensures the client receives a full range of solutions tailored to their project requirements.
Technical Value in Pipeline Systems
Pipe reducers are essential fittings for adjusting pipeline diameters while maintaining pressure integrity and flow efficiency.
- Concentric Reducers (CON): Best suited for vertical pipelines and pump suction lines where flow remains centered.
- Eccentric Reducers (ECC): Ideal for horizontal pipelines to prevent gas accumulation and maintain steady liquid flow.
With their SCH80 wall thickness and ASTM A234 WPB material, these reducers offer:
- Excellent mechanical strength for high-pressure service.
- Reliable weldability and fabrication performance.
- Long-term resistance to stress and fatigue in demanding environments.
Why Choose Haihao Group
Haihao Group has established itself as a trusted manufacturer and supplier of pipe fittings worldwide. Clients choose us for:
- Strict Material Control – ASTM A234 WPB steel ensures durability and toughness.
- Dimensional Accuracy – manufactured to meet ASME B16.9 standards.
- Comprehensive Quality Assurance – full inspection and testing reports provided.
- Global Supply Capability – extensive experience in international logistics and project delivery.
By supplying these reducers to Vietnam, Haihao Group continues to strengthen its role as a leading supplier of carbon steel pipe fittings for global energy and infrastructure projects.