jIS G3454
JIS G3454 Steel Pipe
JIS G3454 is a Japanese standard that specifies carbon steel pipes designed for pressure conditions at a limited maximum temperature of 350℃. At UNIACERO, we understand the importance of quality and standards. Our steel pipes are manufactured in adherence to the JIS G3454 standard, ensuring they meet the rigorous demands of various industries. Whether you’re in the oil, gas, or water heating sector, our pipes are crafted to withstand pressure and temperature conditions, providing a reliable solution for your needs. If you require pipes for even higher pressure, consider the JIS G 3455 standard. With UNIACERO, you’re not just getting a product; you’re investing in excellence.
JIS G3454 Specification
Our JIS G3454 carbon steel pipes come with precise specifications to meet your project requirements. They can be manufactured as seamless steel pipes or electric-resistance welded steel tubes. The dimensions range from an outside diameter of 20-800mm and a wall thickness of 3-150mm. We offer steel grades STPG370 and STPG410. Each pipe’s end can be customized as a Plain End, Beveled End, or Treaded Protected With a Plastic Cap. Additionally, our pipes undergo meticulous production procedures, ensuring they meet the highest quality standards.
| Standard | JIS G3454 | |||||
| Usage | Carbon Steel Pipes for Pressure Service | |||||
| Steel Grade | STPG370(STPG38) STPG410(STPG42) | STPG410(STPG42) | ||||
| Manufacturing Processess | Seamless | ERW | ||||
| OD Range | 15A-350A or over | |||||
| WT Range | SCH10,SCH20,SCH30,SCH40,SCH60,SCH80 | |||||
| Pipe End | PE,BE,Thread,Grooved | |||||
| Pipe Surface | Oil,Vanish,Black,Red,Galvanized,3PE… | |||||
| Chemical Composition | C | Si | Mn | P | S | |
| STPG370 | ≤0.25 | ≤0.35 | 0.3-0.9 | ≤0.04 | ≤0.04 | |
| STPG410 | ≤0.30 | ≤0.35 | 0.3-1 | ≤0.04 | ≤0.04 | |
| Mechanical Properties | – | Tensile Strength(Mpa) | Yield Strength(Mpa) | |||
| STPG370 | 373 | 216 | ||||
| STPG410 | 412 | 245 | ||||
| Tolerance | – | Tolerance on Diameter | Tolerance on Wall Thickness | |||
| Hot-finished Seamless | ≤40A [0.5mm] | Under 4mm | +0.6mm,-0.5mm | |||
| 50A≤OD≤125A [1%] | 4mm or over | +15%,-12.5% | ||||
| 150A [1.6mm] | ||||||
| 200A or over [0.8%] | ||||||
| Cold-finished Seamless and ERW | 25A or under [0.3mm] | under 3mm | +/-0.3mm | |||
| 32A or over [0.8%] | 3mm or over | +/-10% | ||||
| Required Test | Chemical Analysis | Tensile Test | Flattening Test | Bending Test | Hydrostatic Test of NDT | |
JIS G3454 Dimension Table
The dimensions of our JIS G3454 carbon steel pipes are meticulously crafted to ensure they fit seamlessly into your projects. With an outside diameter ranging from 20-800mm and a wall thickness between 3-150mm, our pipes are versatile for various applications. When you choose UNIACERO, you’re selecting a partner committed to precision. Every millimeter counts, and we ensure our pipes meet the exact dimensions you require.
| Nominal Diameter | Outside Diameter | Nominal Wall Thickness | ||||||
|---|---|---|---|---|---|---|---|---|
| A | B | mm | SCH 10 | SCH 20 | SCH 30 | SCH 40 | SCH 60 | SCH 80 |
| 6 | 1/8 | 10.5 | – | – | – | 1.7 | 2.2 | 2.4 |
| 8 | 1/4 | 13.8 | – | – | – | 2.2 | 2.4 | 3.0 |
| 10 | 3/8 | 17.3 | – | – | – | 2.3 | 2.8 | 3.2 |
| 15 | 1/2 | 21.7 | – | – | – | 2.8 | 3.2 | 3.7 |
| 20 | 3/4 | 27.2 | – | – | – | 2.9 | 3.4 | 3.9 |
| 25 | 1 | 34.0 | – | – | – | 3.4 | 3.9 | 4.5 |
| 32 | 1 1/4 | 42.7 | – | – | – | 3.6 | 4.5 | 4.9 |
| 40 | 1 1/2 | 48.6 | – | – | – | 3.7 | 4.5 | 5.1 |
| 50 | 2 | 60.5 | – | 3.2 | – | 3.9 | 4.9 | 5.5 |
| 65 | 2 1/2 | 76.3 | – | 4.5 | – | 5.2 | 6.0 | 7.0 |
| 80 | 3 | 89.1 | – | 4.5 | – | 5.5 | 6.6 | 7.6 |
| 90 | 3 1/2 | 101.6 | – | 4.5 | – | 5.7 | 7.0 | 8.1 |
| 100 | 4 | 114.3 | – | 4.9 | – | 6.0 | 7.1 | 8.6 |
| 125 | 5 | 139.8 | – | 5.1 | – | 6.6 | 8.1 | 9.5 |
| 150 | 6 | 165.2 | – | 5.5 | – | 7.1 | 9.3 | 11.0 |
| 200 | 8 | 216.3 | – | 6.4 | 7.0 | 8.2 | 10.3 | 12.7 |
| 250 | 10 | 267.4 | – | 6.4 | 7.8 | 9.3 | 12.7 | 15.1 |
| 300 | 12 | 318.5 | – | 6.4 | 8.4 | 10.3 | 14.3 | 17.4 |
| 350 | 14 | 355.6 | 6.4 | 7.9 | 9.5 | 11.1 | 15.1 | 19.0 |
| 400 | 16 | 406.4 | 6.4 | 7.9 | 9.5 | 12.7 | 16.7 | 21.4 |
| 450 | 18 | 457.2 | 6.4 | 7.9 | 11.1 | 14.3 | 19.0 | 23.8 |
| 500 | 20 | 508.0 | 6.4 | 9.5 | 12.7 | 15.1 | 20.6 | 26.2 |
| 550 | 22 | 558.8 | 6.4 | 9.5 | 12.7 | 15.9 | – | – |
| 600 | 24 | 609.6 | 6.4 | 9.5 | 14.3 | – | – | – |
| 650 | 26 | 660.4 | 7.9 | 12.7 | – | – | – | – |
Chemical Requirements of JIS G3454
At UNIACERO, we understand the importance of the chemical composition in steel pipes. Our JIS G3454 pipes are manufactured with a specific chemical composition that ensures durability, strength, and resistance to corrosion. When you choose our products, you’re investing in pipes that have been crafted with the utmost attention to chemical requirements, ensuring they last longer and perform better.
| Symbol of Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| STPG370 | 0.25 max. | 0.35 max. | 0.30 to 0.90 | 0.040 max. | 0.040 max. |
| STPG410 | 0.30 max. | 0.35 max. | 0.30 to 1.00 | 0.040 max. | 0.040 max. |
| Other alloy elements than those given in this table may be added as required. | |||||
Mechanical Requirements of JIS G3454
Mechanical properties are crucial for steel pipes, especially when used in industries that demand high strength and durability. Our JIS G3454 carbon steel pipes are designed to meet specific mechanical requirements, ensuring they can handle the pressures of your projects. With UNIACERO, you’re choosing pipes that won’t let you down.
| Tensile Strength，Yield Point Or Proof Stress，And Elongation | ||||||
|---|---|---|---|---|---|---|
| Symbol of Grade | Tensile Strength N/mm2 | Yield Point or proof N/mm2 | Elongation % | |||
| Test pieces No.11 Test pieces No.12 | Test pieces No.5 | Test pieces No.4 | ||||
| Parallel to pipe axis | Perpendicular to pipe axis | Parallel to pipe axis | Perpendicular to pipe axis | |||
| STPG370 | 370 min. | 215 min. | 30 min. | 25 min. | 28 min. | 23 min. |
| STPG410 | 410 min. | 245 min. | 25 min. | 20 min. | 24 min. | 19 min. |
| NOTE: 1 N/mm2=1 MPa | ||||||
Steel Grades in JIS G3454
We offer JIS G3454 carbon steel pipes in two primary steel grades: STPG370 and STPG410. Each grade is designed to meet specific requirements, ensuring you get the right product for your needs. Whether you’re looking for pipes that offer higher tensile strength or those that provide better elongation, UNIACERO has got you covered.
- STPG370
- STPG410
Production Tolerance of JIS G3454
Precision is at the heart of everything we do at UNIACERO. Our JIS G3454 carbon steel pipes come with a dimensional tolerance of +/-1% for the outside diameter and +/- 12% for the wall thickness. This ensures you get pipes that fit perfectly into your projects, reducing wastage and ensuring a seamless fit.
| Table Tolerances on Outside Diameter and Wall Thickness | ||
|---|---|---|
| Division | Tolerances on outside diameter | Tolerances on wall thickness |
| Hot-finished seamless steel pipe | 40 A or under ±0,5 mm | Under 4 mm + 0.6mm, -0.5mm 4 mm or over + 15%, -12.5% |
| 50 A or over up to and incl. 125 A ± 1% | ||
| 150 A ± 1.6mm | ||
| 200 A or over ±0.8% | ||
| For the pipe of nominal size 350 A or over.the tolerances on outside diameter may be determined by the measurement of the length of circumference.In this case, the tolerances shall be±0.5% | ||
| Cold-fnished seamless steel pipe and electric resistance welded steel pipe | 25 A or under ± 0.3mm | Under 3 mm ±0.3mm 3 mm or over ±10% |
| 32 A or over ±0.8% | ||
| For the pipe of nominal size 350 A or over.the tolerances on outside diameter may be determined by the measurement of the length of circumference.In this case, the tolerances shall be±0.5% | ||
