JIS GG3455 Seamless Carbon Steel PipeMaterial
The JIS GG3455 standard specifies seamless carbon steel pipes for high-pressure service. These pipes are made from carbon steel, which is a commonly used material in various industries due to its excellent mechanical properties and affordability. Carbon steel offers good tensile strength, hardness, and durability, making it suitable for applications that require high-pressure and high-temperature resistance.
Specification
The JIS GG3455 specification outlines the requirements for carbon seamless steel pipes, including dimensions, tolerances, and testing methods. The specification covers pipes with outer diameters ranging from 10.5mm to 660.4mm and wall thicknesses from 1.7mm to 50mm. The pipes are available in various lengths and can be customized to meet specific project requirements.
Chemical Composition
The chemical composition of JIS GG3455 carbon seamless steel pipes is crucial in determining their mechanical properties and overall performance. The following table provides an overview of the typical chemical composition requirements for these pipes:
| Element | Composition (%) |
| Carbon (C) | 0.22-0.28 |
| Silicon (Si) | 0.10-0.35 |
| Manganese (Mn) | 0.30-0.60 |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.030 max |
Mechanical Properties
The mechanical properties of JIS GG3455 carbon seamless steel pipes ensure their ability to withstand high-pressure applications. The pipes are subjected to various tests to determine their strength, hardness, and resilience. The table below presents the typical mechanical properties of these pipes:
| Property | Value |
| Tensile Strength | 520 MPa min |
| Yield Strength | 345 MPa min |
| Elongation | 20% min |
| Hardness | 85 HRB max |
Steel Grade
JIS GG3455 carbon seamless steel pipes are available in different steel grades to cater to specific requirements. Some commonly used steel grades for these pipes include:
STS 370
STS 410
STS 480
The steel grades indicate the minimum yield strength and tensile strength of the pipes, ensuring suitability for various applications.
Application
JIS GG3455 carbon seamless steel pipes find extensive application in industries that require high-pressure piping systems, such as power plants, refineries, chemical plants, and boiler installations. These pipes are well-suited for conveying fluids, gases, and steam under elevated temperatures and pressures. The seamless nature of the pipes ensures efficient fluid flow and minimizes the risk of leaks or failures.
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