Seamless Carbon Steel Tees Supplied to South Korea for Industrial Piping Systems
Haihao Group has successfully completed the delivery of a batch of seamless carbon steel tees to a customer in South Korea, supporting industrial piping systems that require high strength, pressure resistance, and reliable performance under demanding service conditions.
The supplied products include standard service and sour service seamless tees, manufactured in strict accordance with international standards and customer technical specifications.
Product Details of the Seamless Tee Shipment
Standard Seamless Tees – ASTM A234 WPB
For conventional pressure piping applications, Haihao Group supplied:
- Product: Seamless Equal Tee
- Size: 4″ × SCH 40
- Size: 4″ × SCH 80
- Material: ASTM A234 Grade WPB
These ASTM A234 WPB seamless tees are widely used in oil & gas, petrochemical, and general industrial pipelines due to their excellent mechanical properties, weldability, and cost efficiency.
Sour Service Seamless Tees – ASTM A420 WPL6 & ASTM A234 WPB
To meet corrosive and low-temperature service requirements, the shipment also included sour service seamless tees, specifically produced for acidic environments:
- Product: Seamless Equal Tee
- Size: 4″ × SCH 40
- Material: ASTM A420 Grade WPL6
- Service: SOUR (acidic service)
- Product: Seamless Equal Tee
- Size: 4″ × SCH 80
- Material: ASTM A234 Grade WPB
- Service: SOUR (acidic service)
These sour service seamless tees are suitable for pipelines exposed to H₂S-containing media and harsh operating conditions commonly found in energy and chemical industries.
Manufacturing and Quality Assurance
All seamless tees supplied to the Korean customer were manufactured with:
- Fully seamless forming process
- Controlled chemical composition
- Dimensional inspection and visual examination
- Material traceability from raw material to finished product
For SOUR service applications, additional controls were applied to ensure compliance with project requirements for corrosion resistance and service reliability.
Applications in the Korean Market
The delivered carbon steel seamless tees are typically used in:
- Oil and gas transmission pipelines
- Petrochemical and chemical plants
- Power generation facilities
- Industrial process piping systems
Both ASTM A234 WPB and ASTM A420 WPL6 seamless tees are trusted materials in South Korea for projects requiring durability, safety, and long service life.
Haihao Group – Reliable Seamless Tee Manufacturer and Exporter
With extensive experience in exporting seamless pipe fittings to Asia, the Middle East, and global markets, Haihao Group provides:
- ASTM A234 WPB seamless tees
- ASTM A420 WPL6 low-temperature and sour service tees
- Strict quality control and stable supply
- Professional packing and on-time delivery
Haihao Group continues to support international customers with high-quality, standards-compliant pipe fitting solutions.

