Haihao Group has successfully completed the delivery of JIS G3454 seamless steel pipes to a customer in Russia. The supplied pipes are manufactured from STPG 370 (STPG 38 equivalent) carbon steel and produced in accordance with JIS G3454, ensuring reliable performance for pressure piping applications.

These seamless pipes are widely used in industrial systems where strength, uniform wall thickness, and stable welding compatibility are required.

JIS G3454 STPG 370 seamless steel pipes SCH 40 manufactured by Haihao Group

Supplied Seamless Pipe Specifications

The shipment includes the following sizes:

• 1 1/4B SCH 40 seamless pipe
  Outside diameter: 42.7 mm, wall thickness: 3.6 mm
• 2B SCH 40 seamless pipe
  Outside diameter: 60.5 mm, wall thickness: 3.9 mm

All pipes are produced from carbon steel equivalent to 20# steel, offering good mechanical properties and consistent quality.

Material and Standard Advantages

JIS G3454 STPG 370 seamless steel pipe is designed for pressure service at ambient and moderately elevated temperatures.
Compared with welded pipes, seamless construction provides:

• Uniform structure without weld seams
• Improved pressure resistance
• Better reliability for long-term operation

The SCH 40 wall thickness makes these pipes suitable for general industrial pipelines, utility systems, and mechanical applications.

Typical Applications

These JIS G3454 seamless pipes are commonly used in:

• Industrial piping systems
• Water and steam pipelines
• Oil, gas, and utility services
• Mechanical and structural applications

Their stable chemical composition and mechanical strength make them a dependable choice for international projects.

Quality Control and Inspection

Haihao Group applies strict quality control throughout production and delivery, including:

• Chemical composition verification
• Dimensional and wall thickness inspection
• Visual and surface examination
• Compliance checks against JIS G3454 requirements

Each batch is carefully inspected to ensure conformity with customer specifications before shipment.

Why Choose Haihao Group

As a professional supplier of seamless carbon steel pipes, Haihao Group has extensive experience serving customers in Russia and other international markets.

We support multiple standards such as JIS, EN, ASTM, and ASME, offering stable quality, flexible production, and reliable delivery schedules.