JIS G3444 Carbon steel tubes for general structural purposes
JIS G3444 Carbon steel tubes for general structural purposes
JIS G3444 Carbon steel tubes for general structural purposes
JIS G3444 steel pipe has excellent mechanical properties and processing characteristics, making it a preferred choice for various mechanical parts such as shafts, bearings, and gears. In the manufacture of heavy machinery and equipment, JIS G3444 steel pipe is frequently used as a frame or support structure, providing the necessary strength and stiffness for reliable industrial performance.
When you choose Rehond JIS G3444 tubing, you're investing in quality, efficiency, and a product that stands the test of time.
Specifications Of JIS G3444
JIS G3441 tubing come with a comprehensive specification, steel grades from low carbon to alloy steels.
| Procedure | seamless |
|---|---|
| Dimensions | O.D.: 10 mm - 120 mm |
| Thickness | 1.0mm - 20mm |
| Steel Grade | STK 290, STK 400, STK 500, STK 490, STK 540 |
| Surface Coating | Black, Red, Primer, Hot Dip Galvanizing |
| End Type | Square cut, Bevelled, Grooved |
| Pipe Packing | In bundles, Plastic film full length wrap |
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| STK 290 | ≤ | ≤ | ≤ | ≤0.05 | ≤0.05 |
| STK 400 | ≤0.25 | 0.15~0.35 | ≤ | ≤0.04 | ≤0.04 |
| STK 500 | ≤0.24 | 0.15~0.35 | 0.30~1.30 | ≤0.04 | ≤0.04 |
| STK 490 | ≤0.18 | 0.15~0.35 | ≤1.50 | ≤0.04 | ≤0.04 |
| STK 540 | ≤0.23 | 0.15~0.35 | ≤1.50 | ≤0.04 | ≤0.04 |
Mechanical Property
| Steel Grade | Elongation value per each range of wall thickness % | |||||||
|---|---|---|---|---|---|---|---|---|
| 7mm < t ≤ 8mm | 6mm < t ≤ 7mm | 5mm < t ≤ 6mm | 4mm < t ≤ 5mm | 3mm < t ≤ 4mm | 2mm < t ≤ 3mm | 1mm < t ≤ 2mm | t ≤ 1mm | |
| STK290 | 30 | 28 | 27 | 26 | 24 | 22 | 21 | 20 |
| 25 | 24 | 22 | 20 | 19 | 18 | 16 | 14 | |
| STK400 | 23 | 22 | 20 | 18 | 17 | 16 | 14 | 12 |
| 18 | 16 | 15 | 14 | 12 | 10 | 9 | 8 | |
| STK500 | 15 | 14 | 12 | 10 | 9 | 8 | 6 | 4 |
| 10 | 8 | 7 | 6 | 4 | 2 | 1 | һ | |
| STK490 | 23 | 22 | 20 | 18 | 17 | 16 | 14 | 12 |
| 18 | 16 | 15 | 14 | 12 | 10 | 9 | 8 | |
| STK540 | 20 | 18 | 17 | 16 | 14 | 12 | 11 | 10 |
| 16 | 14 | 13 | 12 | 10 | 8 | 7 | 6 | |
Why Choose REHOND?
Full Range Of Pipes
REHOND provides a full range of steel tubes, including seamless tube, ERW pipe, steel hollow section, line pipe, and more.
Standard Certifications
We hold international certifications (ISO9001, IATF16949) and follow international standards including JIS G.
Worry-free After-sales
Our professional team handles technical support, returns, and exchanges on time if there are quality problems.
Production Process Flow Chart
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