JIS G3445 Carbon steel tubes for machine structure
JIS G3445 Carbon steel tubes for machine structure
JS G3445 steel pipe has good mechanical properties and processing properties, it's used for machinery, automobiles, bicycles, furniture, appliances and othermachine parts.
JIS G3445 Carbon steel tubes for machine structure
JIS G3445 carbon steel pipe is specifically developed for high-performance machine structures, offering balanced mechanical properties and processing traits. It is widely used in machinery, automobiles, bicycles, furniture, appliances, and various other machine parts.
In the manufacture of heavy machinery equipment, JSG3445 steel pipe is often used as the frame or support structure of the equipment, providing the necessary strength and stiffness.
Specifications
JIS G3445 tubing come with a comprehensive specification, steel grades from low carbon to alloy steels.
| Procedure | seamless, welded |
|---|---|
| Dimensions | O.D.: 10 mm - 120 mm |
| Thickness | 1.0mm - 20mm |
| Steel Grade | STKM11A, STKM12A, 12B, 12C, STKM13A, 13B, 13C, STKM14A |
| 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 |
|---|---|---|---|---|---|
| STKM11A | ≤0.12 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 |
| STKM12A | ≤0.20 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 |
| STKM12B | ≤0.20 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 |
| STKM12C | ≤0.20 | ≤0.35 | ≤0.60 | ≤0.040 | ≤0.040 |
| STKM13A | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.040 | ≤0.040 |
| STKM13B | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.040 | ≤0.040 |
| STKM13C | ≤0.25 | ≤0.35 | 0.30-0.90 | ≤0.040 | ≤0.040 |
| STKM14A | ≤0.30 | ≤0.35 | 0.30-1.00 | ≤0.040 | ≤0.040 |
| STKM14B | ≤0.30 | ≤0.35 | 0.30-1.00 | ≤0.040 | ≤0.040 |
| STKM14C | ≤0.30 | ≤0.35 | 0.30-1.00 | ≤0.040 | ≤0.040 |
| STKM15A | 0.25-0.35 | ≤0.35 | 0.30 - 1.00 | ≤0.040 | ≤0.040 |
| STKM15C | 0.25-0.35 | ≤0.35 | 0.30 - 1.00 | ≤0.040 | ≤0.040 |
| STKM16A | 0.35-0.45 | ≤0.40 | 0.40 -1.00 | ≤0.040 | ≤0.040 |
| STKM16C | 0.35-0.45 | ≤0.40 | 0.40 -1.00 | ≤0.040 | ≤0.040 |
| STKM17A | 0.45-0.55 | ≤0.40 | 0.40 -1.00 | ≤0.040 | ≤0.040 |
| STKM17C | 0.45-0.55 | ≤0.40 | 0.40 -1.00 | ≤0.040 | ≤0.040 |
| STKM18A | ≤0.18 | ≤0.55 | ≤1.50 | ≤0.040 | ≤0.040 |
| STKM18B | ≤0.18 | ≤0.55 | ≤1.50 | ≤0.040 | ≤0.040 |
| STKM18C | ≤0.18 | ≤0.55 | ≤1.50 | ≤0.040 | ≤0.040 |
| STKM19A | ≤0.25 | ≤0.55 | ≤0.15 | ≤0.040 | ≤0.040 |
| STKM19C | ≤0.25 | ≤0.55 | ≤0.15 | ≤0.040 | ≤0.040 |
| STKM20A | ≤0.25 | ≤0.55 | ≤1.6 | ≤0.040 | ≤0.040 |
Mechanical Properties
| Steel Grade | (Mpa) Tensile Strength | (Mpa) Yield Strength | (%) Elongation |
|---|---|---|---|
| STKM11A | ≥290 | - | ≥35 |
| STKM12A STKM12B STKM12C | ≥340 ≥390 ≥470 | ≥175 ≥275 ≥355 | ≥35 ≥25 ≥20 |
| STKM13A STKM13B STKM13C | ≥370 ≥440 ≥510 | ≥215 ≥305 ≥380 | ≥30 ≥20 ≥15 |
| STKM14A STKM14B STKM14C | ≥410 ≥500 ≥550 | ≥245 ≥355 ≥410 | ≥25 ≥15 ≥15 |
| STKM15A STKM15C | ≥470 ≥580 | ≥275 ≥430 | ≥22 ≥12 |
| STKM16A STKM16C | ≥510 ≥620 | ≥325 ≥460 | ≥20 ≥12 |
| STKM17A STKM17C | ≥550 ≥650 | ≥345 ≥480 | ≥20 ≥10 |
| STKM18A STKM18B STKM18C | ≥440 ≥490 ≥510 | ≥275 ≥315 ≥380 | ≥25 ≥23 ≥15 |
| STKM19A STKM19C | ≥490 ≥550 | ≥315 ≥410 | ≥23 ≥15 |
| STKM20A | ≥540 | ≥390 | ≥23 |
Why Choose REHOND?
As a leading professional in specialized steel pipe manufacturing, we provide comprehensive industrial advantages:
1. Over 15 years of industry experience.
2. Strong R&D capability and technical support.
3. Comprehensive OEM and ODM services.
4. Material selection (Standard & Grade) assistance.
5. Assistance in specification interpretation (Classification Society).
6. Strict quality assurance to meet client requirements.
7. Efficient logistics for worldwide large shipments.
8. Prompt problem investigation and resolution.
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