Tianjin Lefin Industrial Co., Ltd is one of the most experienced manufacturers and suppliers of hollow structural section jis g3466 in China. Please feel free to buy high quality hollow structural section jis g3466 from our factory. Good service and reasonable price are available.
Standard & Scope
Standard: JIS G3466 (Japanese Industrial Standard)
Application: Primarily used for general structural purposes in construction, machinery, bridges, and other engineering applications requiring high strength and weldability.
Material & Grades
Material: Carbon steel (may include small amounts of manganese, silicon, and other trace elements for enhanced properties).
Common Grades:
- STKR400: Minimum tensile strength of 400 MPa, suitable for welded structures.
- STKR490: Higher strength grade with a minimum tensile strength of 490 MPa.
Dimensions & Tolerances
Shape: Solid square bars with equal side lengths (e.g., 10mm × 10mm up to 200mm × 200mm, depending on manufacturer specifications).
Tolerances: Complies with JIS dimensional standards for straightness, thickness, and width.
| Characteristics | Tolerances | |
| Outside dimensions of side | (H,B≤100mm) | ±1.5mm |
| H:Longest side B:Shortest side |
(100mm<H,B) | ±1.5% |
| Wall thickness(T) | (T<3mm) | ±0.3mm |
| (3mm≤T) | ±10% in thickness | |
| Squareness of sides | 90°±1.5° | |
| Corner dimension(S) | (S≤3T) | |
| Straightness | 0.3% in total length | |
| Length | 0,+50mm (Private standard tolerance) | |
NOTE
1)The outside dimensions are measured across the flats at positions at least 50mm from the end of the HSS.
Chemical Composition (Typical, % by Weight)
|
Designation of grade |
Chemical Composition |
||||
|---|---|---|---|---|---|
| C | Si | Mn | P | S | |
| STKR 400 | 0.25 max. | - | - | 0.040 max. | 0.040 max. |
| STKR 490 | 0.18 max. | 0.55 max. | 1.50 max. | 0.040 max. | 0.040 max. |
Mechanical Properties
|
Designation of grade |
|||
|---|---|---|---|
|
Tensile strength N/㎟{kgf/㎟} |
Yield point or proof stress N/㎟{kgf/㎟} |
Elongation % (No.5 test piece) |
|
| STKR 400 | 400 {41} min. | 245 {25} min. | 23 min. |
| STKR 490 | 490 {50} min. | 325 {33} min. | 23 min. |
Advantages
Weldability: Suitable for arc welding, gas welding, and other common methods.
Machinability: Can be easily cut, drilled, or formed.
Cost-Effective: Balanced performance for structural applications.
Applications
Building frames, support structures, railings, and machinery components.
Fabrication of brackets, frames, and load-bearing parts.
Compliance & Certification
Meets JIS G3466 standards and may comply with international equivalents (e.g., ASTM A36, EN 10025).
Mill test certificates (MTC) provided for quality assurance.
Notes
Packing:In bare bundle with steel band,or in bulk. Standard lengths are 6, 8 and 12 meter.
Marking:Each of the square and rectangular hollow sections shall be marked with the following information.
a)manufacturer's name b)specification designation c)grade letter d)dimension e)heat number
Storage: Keep dry to prevent rust; oil coating recommended for long-term storage.
Safety: Follow standard steel handling procedures (gloves, eye protection).
Hot Tags: hollow structural section jis g3466, China, suppliers, manufacturers, factory, price, JIS G3499 STKR490 HOLLOW SECTION, JIS G3466 RECTANGULAR TUBE, Saudi Structural Steel SHS RHS, EN10255 CHS, Square Hollow Section Steel Tube, S355J0H Hot Finished Hollow Section
