Introduction
JIS G3454 STPG370 is a widely used seamless steel pipe specification in the Japanese Industrial Standards (JIS). The pipe is mainly used for pressure service at high temperature and high pressure. In this article, we will take a closer look at the chemical composition, mechanical properties, heat treatment status, size range, and main application scenarios of the seamless steel pipe. We will also explore TJC Steel's related supply cases.

Chemical Composition
The chemical composition of JIS G3454 STPG370 is as follows:
- Carbon (C): 0.25% max
- Silicon (Si): 0.35% max
- Manganese (Mn): 0.30-0.90%
- Phosphorus (P): 0.040% max
- Sulfur (S): 0.040% max

Mechanical Properties
The mechanical properties of JIS G3454 STPG370 are as follows:
- Tensile strength: 370 MPa min
- Yield strength: 215 MPa min
- Elongation: 35% min

Heat Treatment Status
The heat treatment status of JIS G3454 STPG370 is usually normalizing or annealing. Normalizing involves heating the pipe to a temperature between 840-900°C and then cooling it in still air. Annealing involves heating the pipe to a temperature between 650-730°C and then cooling it slowly in a furnace.

Size Range
The size range of JIS G3454 STPG370 ranges from 21.7mm to 1016mm in outer diameter and 2.0mm to 60mm in wall thickness.

Main Application Scenarios
JIS G3454 STPG370 seamless steel pipes are mainly used in the following industries:
- Petrochemical industry
- Chemical industry
- Electric power industry
- Boiler and heat exchanger industry
- General machinery industry

TJC Steel's Supply Cases
As a leading supplier of steel pipes in China, TJC Steel has delivered many JIS G3454 STPG370 seamless steel pipe cases to clients around the world. Here are some of our supply cases:
- 1,000 tons of JIS G3454 STPG370 seamless steel pipes exported to Singapore for petrochemical industry in 2019.
- 500 tons of JIS G3454 STPG370 seamless steel pipes delivered to Venezuela for boiler and heat exchanger industry in 2020.
- 700 tons of JIS G3454 STPG370 seamless steel pipes supplied to Malaysia for general machinery industry in 2021.

Conclusion
JIS G3454 STPG370 seamless steel pipes are widely used in various industries due to their high temperature and high pressure resistance. Understanding the chemical composition, mechanical properties, heat treatment status, size range, and main application scenarios of the seamless steel pipe can help make informed decisions when selecting steel pipe materials. As a reliable supplier, TJC Steel has a proven track record of delivering high-quality JIS G3454 STPG370 seamless steel pipes to clients worldwide.