JIS G3455
JIS G3455 Steel Pipe
JIS G3455 is a renowned Japanese Industrial Standard that specifies carbon steel pipes designed for high-pressure service, withstanding temperatures up to approximately 350°C. These pipes, known for their robustness and durability, are essential for industries requiring safe and efficient high-pressure operations. Manufactured using the seamless process, electric resistance welding, or butt welding, these pipes guarantee reliability and longevity. With UNIACERO, you’re not just purchasing a product; you’re investing in quality and safety.
JIS G3455 Specification
Our JIS G3455 steel pipes come in a range of outer diameters from 15 to 600 mm and wall thicknesses from 1 to 50 mm. Depending on your needs, these tubes can be provided as manufactured, cold-finished, or subjected to appropriate heat treatment. Each pipe is meticulously crafted to be practically straight, ensuring that both ends are at right angles to the tube’s axis. With a commitment to excellence, we ensure that our pipes are free from any defects that could hinder their practical use.
| Production Standard | JIS G 3455 | ||
| Manufacturing Processes | SMLS (Hot Finished Seamless) | ||
| SMLS (Cold -Finished Seamless) | |||
| Outside Diameter | 10.3mm – 660.4mm (1/8″ – 26″) | ||
| Wall Thickness | 1.7 – 64.2 mm | ||
| Pipe Length | 6 meters, 12 meters or customized. | ||
| Steel Grade | JIS G 3455 STS370 | JIS G 3455 STS410 | JIS G 3455 STS470 |
| Corrosion Prevention | Lacquer, Varnish, Oiling, Galvanizing | ||
| End Processes | Square Cut, Bevelling, Threading, Grooving | ||
| Further Processing | Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding | ||
JIS G3455 Dimension Table
The JIS G3455 pipes we offer range in outer dimensions from 19.05mm to 114.3mm, with wall thicknesses varying from 2.0mm to 14 mm. The length can be customized up to a maximum of 16000mm, ensuring that we can cater to diverse industrial requirements. With precise dimensions, our pipes ensure a perfect fit and seamless integration into your operations.
| Nominal Diameter | Outside Diameter | Nominal Wall Thickness | |||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | mm | SCH 40 | SCH 60 | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 |
| 6 | 1/8 | 10.5 | 1.7 | – | 2.4 | – | – | – | – |
| 8 | 1/4 | 13.8 | 2.2 | – | 3.0 | – | – | – | – |
| 10 | 3/8 | 17.3 | 2.3 | – | 3.2 | – | – | – | – |
| 15 | 1/2 | 21.7 a | 2.8 | – | 3.7 | – | – | – | 4.7 |
| 20 | 3/4 | 27.2 | 2.9 | – | 3.9 | – | – | – | 5.5 |
| 25 | 1 | 34.0 | 3.4 | – | 4.5 | – | – | – | 6.4 |
| 32 | 1 1/4 | 42.7 | 3.6 | – | 4.9 | – | – | – | 6.4 |
| 40 | 1 1/2 | 48.6 | 3.7 | – | 5.1 | – | – | – | 7.1 |
| 50 | 2 | 60.5 | 3.9 | – | 5.5 | – | – | – | 8.7 |
| 65 | 2 1/2 | 76.3 | 5.2 | – | 7.0 | – | – | – | 9.5 |
| 80 | 3 | 89.1 | 5.5 | – | 7.6 | – | – | – | 11.1 |
| 90 | 3 1/2 | 101.6 | 5.7 | – | 8.1 | – | – | – | 12.7 |
| 100 | 4 | 114.3 | 6.0 | – | 8.6 | – | 11.1 | – | 13.5 |
| 125 | 5 | 139.8 | 6.6 | – | 9.5 | – | 12.7 | – | 15.9 |
| 150 | 6 | 165.2 | 7.1 | – | 11.0 | – | 14.3 | – | 18.2 |
| 200 | 8 | 216.3 | 8.2 | 10.3 | 12.7 | 15.1 | 18.2 | 20.6 | 23.0 |
| 250 | 10 | 267.4 | 9.3 | 12.7 | 15.1 | 18.2 | 21.4 | 25.4 | 28.6 |
| 300 | 12 | 318.5 | 10.3 | 14.3 | 17.4 | 21.4 | 25.4 | 28.6 | 33.3 |
| 350 | 14 | 355.6 | 11.1 | 15.1 | 19.0 | 23.8 | 27.8 | 31.8 | 35.7 |
| 400 | 16 | 406.4 | 12.7 | 16.7 | 21.4 | 26.2 | 30.9 | 36.5 | 40.5 |
| 450 | 18 | 457.2 | 14.3 | 19.0 | 23.8 | 29.4 | 34.9 | 39.7 | 45.2 |
| 500 | 20 | 508.0 | 15.1 | 20.6 | 26.2 | 32.5 | 38.1 | 44.4 | 50.0 |
| 550 | 22 | 558.8 | 15.9 | 22.2 | 28.6 | 34.9 | 41.3 | 47.6 | 54.0 |
| 600 | 24 | 609.6 | 17.5 | 24.6 | 31.0 | 38.9 | 46.0 | 52.4 | 59.5 |
| 650 | 26 | 660.4 | 18.9 | 26.4 | 34.0 | 41.6 | 49.1 | 56.6 | 64.2 |
Chemical Requirements of JIS G3455
Our JIS G3455 pipes adhere to strict chemical compositions. For instance, the STS 370 grade contains a maximum of 0.25% carbon, 0.100.35% silicon, and 0.301.10% manganese. Each grade has been formulated to provide optimal performance under high-pressure conditions, ensuring that the pipes can handle demanding environments.
| Designation of Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| STS370 | 0.25 max. | 0.10 to 0.35 | 0.30 to 1.10 | 0.035 max. | 0.035 max. |
| STS410 | 0.30 max. | 0.10 to 0.35 | 0.30 to 1.40 | 0.035 max. | 0.035 max. |
| STS480 | 0.33 max. | 0.10 to 0.35 | 0.30 to 1.50 | 0.035 max. | 0.035 max. |
| Other alloy elements than those given in this table may be added as required. | |||||
Mechanical Requirements of JIS G3455
Mechanical properties are paramount for high-pressure pipes. Our JIS G3455 pipes, such as the STS 370, have a minimum tensile strength of 373 MPa and a yield strength of 216 MPa. These properties ensure that our pipes can withstand high pressures without compromising their structural integrity.
| Mechanical Properties | ||||||
|---|---|---|---|---|---|---|
| Designation of Grade | Tensile Strength N/mm2 | Yield Point or Proof Stress 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 | |||
| STS370 | 370 min. | 215 min. | 30 min. | 25 min. | 28 min. | 23 min. |
| STS410 | 410 min. | 245 min. | 25 min. | 20 min. | 24 min. | 19 min. |
| STS480 | 480 min. | 275 min. | 25 min. | 20 min. | 22 min. | 17 min. |
| NOTE: 1 N/mm2=1 MPa | ||||||
Steel Grades in JIS G3455
We offer four distinct grades under the JIS G3455 specification: STS 370, STS 410, STS 480, and STS 510. Each grade has been developed to cater to different industrial needs, ensuring that you can find the perfect fit for your operations. With UNIACERO, you get the flexibility to choose the grade that aligns with your specific requirements.
- STS370
- STS410
- STS480
