JIS G3452 Carbon Steel Pipes
JIS G3452 Carbon Steel Pipes
JIS G3452 is a Japanese Industrial Standard (JIS) for carbon steel pipes used for ordinary piping applications. These pipes are commonly used to transport fluids such as water, gas, oil, and air in general piping systems.
| Specification | Details |
|---|---|
| Standard | JIS G3452 |
| Material | Carbon Steel |
| Grades | STPG 370, STPG 410 |
| Manufacturing Process | Seamless (SMLS) / Welded (ERW) |
| Outer Diameter (OD) | 10.5 mm – 508 mm (as per standard) |
| Wall Thickness (WT) | 2.0 mm – 7.9 mm (as per schedule) |
| Length | 5m – 12m, or as per customer requirement |
| Surface Finish | Black, Galvanized, Anti-corrosion Coated |
| End Finish | Plain End, Beveled End, Threaded & Coupled |
| Application | Water, Gas, Air, Oil, and General Piping |
| Pressure Rating | Suitable for moderate pressure applications |
| Testing | Hydrostatic Test, Eddy Current Test, Ultrasonic Test |
| Standards & Certification | JIS G3452, Mill Test Certificate (MTC) available |
JIS G3452 Dimensions, Weights and Dimensional Tolerances
| Nominal Diameter | O.D. mm | O.D. Tolerances | W.T. mm | W.T. Tolerances | Unit Mass excluding Socket kg/m | ||
|---|---|---|---|---|---|---|---|
| A | B | Pipes to be cut in taper thread | Other pipes | ||||
| 6 | 1/8 | 10.5 | ±0.5mm | ±0.5mm | 2 | +Not specified -12.50% | 0.419 |
| 8 | 1/4 | 13.8 | ±0.5mm | ±0.5mm | 2.3 | 0.652 | |
| 10 | 3/8 | 17.3 | ±0.5mm | ±0.5mm | 2.3 | 0.851 | |
| 15 | 1/2 | 21.7 | ±0.5mm | ±0.5mm | 2.8 | 1.31 | |
| 20 | 3/4 | 27.2 | ±0.5mm | ±0.5mm | 2.8 | 1.68 | |
| 25 | 1 | 34 | ±0.5mm | ±0.5mm | 3.2 | 2.43 | |
| 32 | 1 1/4 | 42.7 | ±0.5mm | ±0.5mm | 3.5 | 3.38 | |
| 40 | 1 1/2 | 48.6 | ±0.5mm | ±0.5mm | 3.5 | 3.89 | |
| 50 | 2 | 60.5 | ±0.5mm | ±1% | 3.8 | 5.31 | |
| 65 | 2 1/2 | 76.3 | ±0.7mm | ±1% | 4.2 | 7.47 | |
| 80 | 3 | 89.1 | ±0.8mm | ±1% | 4.2 | 8.79 | |
| 90 | 3 1/2 | 101.6 | ±0.8mm | ±1% | 4.2 | 10.1 | |
| 100 | 4 | 114.3 | ±0.8mm | ±1% | 4.5 | 12.2 | |
| 125 | 5 | 139.8 | ±0.8mm | ±1% | 4.5 | 15 | |
| 150 | 6 | 165.2 | ±0.8mm | ±1.6mm | 5 | 19.8 | |
| 175 | 7 | 190.7 | ±0.9mm | ±1.6mm | 5.3 | 24.2 | |
| 200 | 8 | 216.3 | ±1.0mm | ±0.8% | 5.8 | 30.1 | |
| 225 | 9 | 241.8 | ±1.2mm | ±0.8% | 6.2 | 36 | |
| 250 | 10 | 267.4 | ±1.3mm | ±0.8% | 6.6 | 42.4 | |
| 300 | 12 | 318.5 | ±1.5mm | ±0.8% | 6.9 | 53 | |
| 350 | 14 | 355.6 | – | ±0.8% | 7.9 | 67.7 | |
| 400 | 16 | 406.4 | – | ±0.8% | 7.9 | 77.6 | |
| 450 | 18 | 457.2 | – | ±0.8% | 7.9 | 87.5 | |
| 500 | 20 | 508 | – | ±0.8% | 7.9 | 97.4 | |
JIS G3452 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.25 |
| Manganese (Mn) | ≤ 0.30-0.90 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.040 |
JIS G3452 Mechanical Properties
| Property | Value |
| Tensile Strength | ≥ 290 MPa |
| Yield Strength | ≥ 165 MPa |
| Elongation | ≥ 25% (for pipes ≤ 15.0mm thickness) |
JIS G3452 Physical Properties
| Property | Value |
| Density | 7.85 g/cm³ |
| Melting Point | 1420–1460°C |
| Thermal Conductivity | ~50 W/(m·K) |
| Electrical Resistivity | ~0.15 µΩ·m |
Standard & Grade
The most common grade under JIS G3452 is STPG 370 and STPG 410. However, JIS G3452 primarily classifies pipes based on pressure service rather than multiple grades.
Application
- Water Supply Systems – Used in municipal and industrial water distribution lines.
- Gas Pipelines – Suitable for natural gas and other low-pressure gas distribution.
- Oil Pipelines – Applied in moderate-pressure oil transport systems.
- Steam Piping – Utilized in industrial steam transmission networks.
- HVAC Systems – Used in heating, ventilation, and air conditioning systems.
- Fire Protection Systems – Implemented in sprinkler and fire suppression pipelines.
- General Structural Use – Supports various industrial frameworks and structures.