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JIS G3466 Rectangle Carbon Steel Tube of High Strength
This JIS G3466 rectangle carbon steel tube delivers exceptional high strength and durability for demanding structural applications. Its robust design ensures reliable performance in construction, civil engineering, and heavy-duty frameworks.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of JIS G3466 Rectangle Carbon Steel Tube of High Strength in China, featured by quality products and low price. If you're going to wholesale durable JIS G3466 Rectangle Carbon Steel Tube of High Strength made in China, welcome to get pricelist and free sample from our factory.
JIS G3466 Rectangle Carbon Steel Tube of High Strength
Product introduction
JIS G3466 Rectangle Carbon Steel Tube of High Strength offers exceptional mechanical performance, particularly in the STKR490 grade, which delivers a minimum tensile strength of 490 MPa and a yield strength of 325 MPa. This high strength-to-weight ratio allows for reduced self-weight in large-span designs while maintaining robust load-bearing capacity for heavy-duty structures like high-rise core tubes and bridge main beams. The tubes are manufactured through a precise cold-forming and high-frequency electric welding process, ensuring excellent dimensional accuracy, superior surface quality, and reliable weld integrity for complex structural fabrication.
Product specification
Mechnical properties of JIS G3466 rectangle carbon steel tube for structure
| Grade | Tensile strength | Yield point or proof stress | Elongation % |
| STKR400 | 400 | 245 | 23 |
| STKR490 | 490 | 325 | 23 |
Dimensional tolerance of JIS G3466 rectangle carbon steel tube for structure
| Size difference | Dimensional tolerance | ||
| Side length | ≤100mm | ±1.5mm | |
| ＞100mm | ±1.5% | ||
| Wall thickness | welded | ≤3mm | ±0.3mm |
| ＞3mm | ±10% | ||
| Seamless | ≤4mm | ±0.6mm | |
| ＞4mm | ±15% | ||
| Bump of the flat portion of each part | side length≤100mm | ≤0.5mm | |
| side length≥100mm | Less than 5% of the side length | ||
| Corner size | ＜31 | ||
| The Angle of the adjacent plate | 90°±1.5° | ||
| Length | -0 +No provisions | ||
| bending | 3% or less of the total length | ||
Product feature and application
JIS G3466 Rectangle Carbon Steel Tube of High Strength is engineered for demanding structural applications, offering superior mechanical performance with grades like STKR490 delivering a minimum tensile strength of 490 MPa. Its high strength-to-weight ratio enables lighter, more efficient designs in large-span structures such as high-rise buildings and bridge main beams, while maintaining robust load-bearing capacity. Manufactured via precise cold-forming and high-frequency electric welding, these tubes ensure excellent dimensional accuracy and reliable weld integrity for complex fabrication. They are widely used in construction, civil engineering, and heavy-duty frameworks where durability and structural reliability are critical.
Production details
Precision Manufacturing and Structural Integrity
Produced through advanced cold-forming and high-frequency electric resistance welding, these JIS G3466 rectangular tubes feature sharp, uniform corners and consistent wall thickness for superior dimensional accuracy. The high-strength steel composition ensures excellent weldability and load-bearing capacity, making them ideal for critical structural frameworks where precision and durability are paramount.
Prodect qualification
These JIS G3466 rectangular carbon steel tubes strictly adhere to Japanese Industrial Standards for structural applications, ensuring consistent mechanical properties and dimensional tolerances. Each batch undergoes rigorous quality control, including tensile strength testing and visual inspection, to guarantee compliance with high-strength requirements. The uniform stacking and secure bundling shown reflect our commitment to safe handling and reliable delivery, meeting international export standards for structural steel products.
Deliver,shipping and serving
services we offer
Product Repair Service
We provide expert repair and restoration services for damaged steel tubes, ensuring structural integrity is maintained. Our team assesses weld quality and surface defects to extend the product's service life effectively.
Scheduled Maintenance Service
Regular inspection plans are offered to monitor corrosion levels and structural stress in installed frameworks. This proactive approach prevents unexpected failures and ensures long-term safety for construction projects.
Installation Instruction Service
Professional technical guidance is available to assist engineers with proper cutting, welding, and assembly techniques. We ensure adherence to JIS standards during installation to maximize the load-bearing performance of the tubes.
Programming Instruction
We offer detailed consultation on material selection and custom processing parameters for specific engineering needs. Our experts guide you through fabrication planning to optimize efficiency and reduce material waste.
FAQ
Q: What are the common grades for JIS G3466 tubes?
A: Common grades include STKR400, STKR490, and STKR590, offering varying tensile strengths. STKR490 is widely used for general structural purposes requiring higher load-bearing capacity.
Q: Can these rectangular tubes be welded easily?
A: Yes, they possess excellent weldability due to their controlled carbon equivalent content. Standard arc welding methods can be used without special pre-heating for most thicknesses.
Q: What is the typical length availability for these tubes?
A: Standard lengths are usually 6 meters or 12 meters, depending on customer requirements. Custom cutting services are also available to minimize waste for specific project dimensions.
Q: Are these tubes suitable for outdoor structural applications?
A: Yes, but for long-term outdoor exposure, painting or galvanizing is recommended for corrosion protection.The base material provides strong structural support for frameworks in various environments.
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