Explore the properties, applications, and specifications of SS400 steel tubes, a widely used mild steel grade under JIS G3101 standard, known for its excellent weldability and versatility in structural applications.
SS400 steel offers several advantages:
SS400 is a Japanese Industrial Standard (JIS G3101) grade of mild steel widely utilized in structural applications. It is renowned for its excellent weldability and machinability, making it suitable for various fabrication processes.
JIS SS400 hollow pipe is mainly used for general structural purposes, such as bridges, buildings, machinery and other fields. The steel pipe has good weldability, processability and formability, and can be processed and produced by welding, cutting, bending and other processing methods. In addition, the chemical composition and mechanical properties of JIS SS400 galvanized steel pipes have certain requirements, such as carbon content not exceeding 0.22%, sulfur content not exceeding 0.050%, tensile strength not less than 440MPa, etc.
While SS400 steel is versatile, it may not be suitable for applications requiring high wear resistance or hardness due to its low carbon content. It is advisable to consult with material specialists or engineers to ensure the chosen material meets the specific requirements of your application.
SS400 steel tubes are a reliable choice for a wide range of structural applications, offering a balance of strength, weldability, and cost-effectiveness. Understanding its properties and specifications can aid in selecting the appropriate material for your project needs.
JIS G3101 SS400 is a widely used Japanese standard for structural carbon steel, known for its excellent weldability and machinability, making it suitable for a variety of structural applications.
| Element | Maximum Percentage (%) |
|---|---|
| Carbon (C) | 0.17% for thickness ≤ 16mm; 0.20% for thickness > 16mm |
| Manganese (Mn) | 1.60% |
| Phosphorus (P) | 0.050% |
| Sulfur (S) | 0.050% |
| TAIWAN - CNS | CHINA - GB | JAPAN - JIS | USA - ASTM | GERMANY - DIN |
|---|---|---|---|---|
| SS400 | Q235A, Q235B, Q235C, Q235D | SS400 | A570 Gr.30, A570 Gr.45, A 36/A283M Gr.D | St37-2, Ust37-2, RSt37-2 |
SS400 is extensively used in structural applications such as building frames, bridges, and other construction components due to its strength and weldability. Its versatility also makes it suitable for manufacturing parts that require bending, forming, or welding.
This steel grade exhibits good weldability and machinability, allowing for ease in fabrication and assembly in various structural projects.
While SS400 has modest corrosion resistance, it is often coated or painted to enhance its durability in corrosive environments.
When selecting SS400 or its equivalents for a project, it's essential to consider the specific requirements and standards applicable to ensure optimal performance and compliance.
JIS SS400 hot-dip galvanized steel pipe is a structural carbon steel pipe produced in accordance with the Japanese Industrial Standard (JIS), where SS400 is the grade in the standard, indicating that the yield strength of the steel pipe is approximately 400MPa.
With years of expertise, we provide a wide range of steel tube processing services. From basic sawing and machining to complex bending and upsetting operations, we support you at every stage of your project.
Our capabilities include eccentricity reduction and concentricity improvement through turning and grinding. We specialize in creating complex geometries using rotary swaging and axial forming, and offer property modifications through partial heat treatment to meet your exact requirements.
Alloy steel pipes are widely used in high-temperature, high-pressure and corrosive service environments where conventional carbon steel pipes cannot provide sufficient mechanical strength or long-term reliability.
Manufactured from premium alloy steels containing chromium, molybdenum, nickel and other alloying elements, these pipes provide excellent resistance to heat, pressure, oxidation and corrosion, making them ideal for demanding industrial processes.
Alloy steel pipes offer superior performance under severe operating conditions. Their enhanced mechanical properties provide excellent resistance to elevated temperatures, internal pressure, corrosion and long-term creep deformation.
Alloy steel pipes are selected for critical applications where operating temperatures, pressures or corrosive media exceed the capabilities of carbon steel.
| Service Condition | Typical Application |
|---|---|
| High Temperature | Boilers, superheaters, steam headers |
| Low Temperature | Cryogenic processing systems |
| High Pressure | Power generation and process piping |
| Corrosive Media | Chemical and petrochemical plants |
| Long-Term Creep Service | Thermal power stations |
| Product Type | Common Standards |
|---|---|
| Seamless Pipes | ASTM A335 P1, P5, P9, P11, P22, P91 |
| Butt Weld Fittings | ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 |
| Forged Fittings & Flanges | ASTM A182 F1, F5, F9, F11, F22, F91 |
Sunny Steel supplies alloy steel piping products to customers worldwide across a wide range of industrial sectors. Our products are manufactured to international standards and are trusted in critical piping systems requiring long-term reliability.
Chemical composition inspection, mechanical properties test(tensile strength,yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension test, non-destructive test, hydrostatic test.
Identification of the chemical composition of the metal used to manufacture the fitting. Uses PMI sensors, including X-ray fluorescence or optical emission spectrometry.
