Haihao Group Supplies ASME B16.9 ASTM A234 WPB and BS EN 10253-2 P265GH Reducers to UK Customer
Haihao Group recently completed the production and shipment of a batch of carbon steel reducer fittings for a customer in the United Kingdom. The order included both ASME B16.9 ASTM A234 WPB concentric reducer products and BS EN 10253-2 P265GH eccentric reducer products in various sizes for industrial piping systems.
The shipment covered concentric reducers and eccentric reducers manufactured according to American and European standards. All fittings were produced with strict dimensional tolerances, precision bevel preparation, and surface treatment requirements to ensure reliable installation and long-term service performance.
Project Overview
The order consisted of reducer fittings manufactured according to ASME B16.9 and BS EN 10253-2 standards.
ASME B16.9 ASTM A234 WPB Concentric Reducers for Industrial Pipelines
A large portion of the shipment consisted of ASME B16.9 ASTM A234 WPB concentric reducer fittings. These fittings are widely used to connect pipes of different diameters while maintaining a common centerline.
ASTM A234 WPB remains one of the most widely specified carbon steel materials for butt weld fittings due to its:
- Excellent weldability
- Reliable mechanical properties
- Good pressure resistance
- Cost-effective performance
- Broad acceptance in international projects
The supplied reducers ranged from small transition sizes such as 3″×1″ to large-diameter configurations including 20″×16″, making them suitable for a wide range of piping applications.

ASME B16.9 ASTM A234 WPB and BS EN 10253-2 P265GH concentric reducers and eccentric ready for shipment
BS EN 10253-2 P265GH Eccentric Reducers for European Standard Projects
The shipment also included BS EN 10253-2 P265GH eccentric reducer fittings manufactured for European-standard piping systems.
P265GH is a pressure vessel steel grade commonly used in:
- Steam systems
- District heating networks
- Process industries
- Utility pipelines
- Industrial facilities
The delivered BS EN 10253-2 P265GH eccentric reducer products featured carefully controlled wall thicknesses and dimensional tolerances to ensure compatibility with existing pipeline systems.
Concentric vs. Eccentric Reducers
Both reducer types serve important functions in pipeline design.
Concentric Reducers
A concentric reducer maintains the centerline of the pipeline and creates a symmetrical transition between pipe sizes.
Typical applications include:
- Vertical pipelines
- Process piping
- General fluid transportation
- Pressure systems
Eccentric Reducers
An eccentric reducer features one flat side, helping prevent liquid accumulation or gas pockets in horizontal pipelines.
Common applications include:
- Pump suction lines
- Drainage systems
- Oil and gas facilities
- Process plants
Both configurations were included in this UK shipment to meet different engineering requirements.
Precision Bevel Preparation and Surface Treatment
To meet project specifications, all fittings underwent comprehensive preparation before shipment.
Surface Treatment
For ASTM A234 WPB reducers:
- Sandblasted surface
- Black painted finish
- Export protection
For P265GH reducers:
- Sandblasted surface
- Bright bevel ends
- Anti-rust oil coating
Bevel Requirements
The project required compliance with both ASME and EN bevel standards.
ASME B16.9 Requirements
- Bevel angle: 37.5° ± 2.5°
- Root face included
- Full dimensional compliance
BS EN 10253-2 Requirements
- Bevel angle: 30° (+5°)
- Root face included
- Acceptance according to EN tolerances
Accurate bevel preparation helps improve welding quality and installation efficiency.
Quality Assurance Throughout Production
Haihao Group applies strict inspection procedures to every reducer fitting order.
Inspection activities included:
Material Verification
All materials were checked against ASTM A234 WPB and P265GH specifications.
Dimensional Inspection
Reducer dimensions were verified according to ASME B16.9 and BS EN 10253-2 requirements.
Surface Inspection
Each fitting underwent visual examination after blasting, painting, and oil coating.
Bevel Inspection
Bevel geometry and root face dimensions were checked before packaging.
Final Shipment Review
Products were inspected and documented prior to export.
These measures help ensure consistent product quality and reliable field performance.
Applications of Carbon Steel Reducer Fittings
The supplied ASME B16.9 ASTM A234 WPB concentric reducer and BS EN 10253-2 P265GH eccentric reducer products are commonly used in:
- Oil and gas pipelines
- Petrochemical plants
- Power generation facilities
- Water treatment systems
- District heating networks
- Industrial process piping
- Infrastructure construction projects
Their versatility makes them essential components in modern piping systems.
Why Customers Choose Haihao Group
Haihao Group supplies a complete range of piping products, including:
- Reducers
- Elbows
- Tees
- Caps
- Flanges
- Forged fittings
- Steel pipes
Customers worldwide rely on Haihao Group because of:
- International standard compliance
- Flexible manufacturing capability
- Strict quality control
- Competitive lead times
- Professional export service
- Extensive project experience
The successful shipment to the United Kingdom reflects Haihao Group’s commitment to supplying dependable piping solutions for global industrial projects.
FAQ
What is the difference between a concentric reducer and an eccentric reducer?
A concentric reducer maintains a common centerline, while an eccentric reducer has one flat side to prevent liquid accumulation or gas pockets.
What is ASTM A234 WPB?
ASTM A234 WPB is a carbon steel material specification commonly used for butt weld pipe fittings.
Why is P265GH used for piping systems?
P265GH offers good strength, weldability, and performance under elevated temperature and pressure conditions.
What bevel angle does ASME B16.9 require?
ASME B16.9 generally specifies a bevel angle of 37.5° ± 2.5° with a root face.
Can Haihao Group manufacture custom reducer sizes?
Yes. Haihao Group can manufacture concentric and eccentric reducers according to ASME, EN, DIN, and customer-specific requirements.
Contact Haihao Group
Looking for a reliable supplier of ASME B16.9 ASTM A234 WPB concentric reducer or BS EN 10253-2 P265GH eccentric reducer products?
Haihao Group offers:
- Concentric reducers
- Eccentric reducers
- Carbon steel butt weld fittings
- Customized dimensions and wall thicknesses
- Global project support
Contact our team today for technical consultation and a competitive quotation.

