ASTM A234 WPB ASME B16.9 Pipe Fittings Exported to Bulgaria by Haihao Group
Haihao Group recently completed the production and shipment of several large-diameter carbon steel pipe fittings for a customer in Bulgaria. The order included ASTM A234 WPB ASME B16.9 equal tees and 90 degree long radius elbows, manufactured according to international pipeline standards for industrial applications.
The products were carefully processed with sandblasting and magnetic particle inspection before delivery to ensure reliable quality and long-term service performance.
Shipment Details
Equal Tee
| Product | Size / Thickness | Material | Standard | Surface Treatment |
| Equal Tee | 610 × 10 mm | ASTM A234 WPB | ASME B16.9 | Sandblasting & Magnetic Particle Inspection |
90° Long Radius Elbows
| Product | Size / Thickness | Bending Radius | Material | Standard |
| 90° Long Radius Elbow | 610 × 10 mm | R = 914 mm | ASTM A234 WPB | ASME B16.9 |
| 90° Long Radius Elbow | 610 × 17.5 mm SCH40 | R = 914 mm | ASTM A234 WPB | ASME B16.9 |
Advantages of ASTM A234 WPB ASME B16.9 Pipe Fittings
The ASTM A234 WPB ASME B16.9 pipe fittings supplied in this order are designed for high-performance industrial piping systems where strength, weldability, and durability are essential.
Manufactured from quality carbon steel materials, these fittings provide:
- Excellent mechanical strength
- Reliable pressure resistance
- Good welding performance
- Stable dimensional accuracy
- Long service life in industrial environments
Because of these advantages, ASTM A234 WPB ASME B16.9 pipe fittings are widely used in oil & gas, power generation, petrochemical plants, and infrastructure pipeline systems.
The large-size ASTM A234 WPB ASME B16.9 pipe fittings delivered to Bulgaria were produced under strict manufacturing control to ensure compliance with customer specifications and international standards.

ASTM A234 WPB ASME B16.9 equal tees and 90 degree long radius elbows manufactured by Haihao Group
Sandblasting and Magnetic Particle Inspection
To improve product quality and meet project requirements, all fittings underwent professional surface treatment and inspection procedures.
Sandblasting
Sandblasting helps:
- Remove surface impurities
- Improve coating adhesion
- Enhance surface uniformity
- Increase corrosion protection performance
Magnetic Particle Inspection (MPI)
MPI testing was conducted to detect possible surface cracks or discontinuities before shipment.
This inspection process ensures the reliability and safety of each ASTM A234 WPB ASME B16.9 pipe fittings product used in critical pipeline systems.
Applications of Large-Diameter Pipe Fittings
The supplied ASTM A234 WPB ASME B16.9 pipe fittings are suitable for various industrial applications, including:
- Oil & gas transportation pipelines
- Petrochemical processing systems
- Thermal power plants
- Water treatment facilities
- Industrial construction projects
Large-diameter elbows and equal tees play an important role in maintaining stable flow direction and pipeline branch connections.
Why Global Customers Choose Haihao Group
Haihao Group has extensive experience in exporting industrial pipe fittings worldwide.
The company provides:
- ASME and ASTM standard products
- Large-diameter pipe fittings manufacturing
- Strict quality control
- Professional export packaging
- Fast international delivery support
With strong production capability and reliable service, Haihao Group continues to be a trusted supplier for industrial pipeline projects across Europe, the Middle East, and Asia.
FAQ
What is ASTM A234 WPB material?
ASTM A234 WPB is a carbon steel material commonly used for butt weld pipe fittings in medium and high-temperature service.
What is ASME B16.9?
ASME B16.9 is the international standard covering factory-made wrought butt welding fittings.
Why are long radius elbows used in pipelines?
Long radius elbows reduce flow resistance and pressure drop, improving fluid transportation efficiency.
What is magnetic particle inspection used for?
MPI is a non-destructive testing method used to identify surface cracks and defects in carbon steel products.
Can Haihao Group manufacture customized pipe fittings?
Yes. Haihao Group can produce customized pipe fittings according to customer drawings, standards, materials, and project requirements.

