JIS G 3454 specifies carbon steel pipes used for pressure piping service at temperatures up to approximately 350°C.
Specified Standard Edition: JIS G 3454:2026
Standard Title: Carbon Steel Pipes for Pressure Service
The standard applies to pipes with outside diameters from 10.5 mm to 660.4 mm.
JIS G 3454 is intended for pressure piping service. Material selection for higher-pressure or other specialized service should follow the applicable JIS material standard, piping design requirements and project specification.
JIS G 3454 specifies two principal carbon steel grades: STPG370 and STPG410.
The grade designation reflects the specified tensile-strength level.
| Grade | Material | Grade Description |
|---|---|---|
| STPG370 | Carbon Steel | Standard-strength grade used for general pressure piping applications covered by JIS G 3454 |
| STPG410 | Carbon Steel | Higher-strength grade for pressure piping applications requiring the corresponding material grade |
STPG410 provides a higher strength level than STPG370 and should be selected only where required by the piping design and material specification.
JIS G 3454 defines separate chemical-composition requirements for STPG370 and STPG410.
The principal controlled elements include:
The exact chemical composition shall comply with the applicable requirements of the ordered JIS G 3454:2026 grade.
For purchasing and material certification, the complete grade designation should be stated as JIS G 3454 STPG370 or JIS G 3454 STPG410.
The principal room-temperature strength requirements are:
| Property | STPG370 | STPG410 |
|---|---|---|
| Minimum Tensile Strength | 370 MPa | 410 MPa |
| Minimum Yield Point / Proof Stress | 215 MPa | 245 MPa |
Elongation requirements depend on the applicable test specimen, orientation and pipe dimensions.
Mechanical properties should be verified against the ordered grade and applicable JIS G 3454 requirements.
| Parameter | Standard Scope |
|---|---|
| Outside Diameter | 10.5–660.4 mm |
Pipe dimensions are commonly specified using either of the following formats:
The JIS standard dimensional scope and FYN manufacturing capability are stated separately.
JIS G 3454 covers different pipe manufacturing methods, including seamless and electric resistance welded pipe.
This FYN product page covers seamless JIS G 3454 carbon steel pipe.
The required manufacturing method should be stated in the purchase specification when seamless pipe is mandatory.
Heat-treatment requirements depend on the manufacturing and finishing condition.
For FYN cold-finished seamless pipe, the applicable final heat treatment is confirmed according to:
Any project-specific heat-treatment requirement should be stated during the enquiry stage.
Inspection and testing are carried out according to JIS G 3454 and the purchase specification.
Applicable inspection can include:
Additional quality requirements should be identified at the enquiry and order stage.
Pressure-service pipe requires verification of pipe integrity according to the applicable JIS G 3454 requirements.
Depending on the ordered specification, FYN can review requirements for:
The required method, acceptance criteria and any project-specific NDT requirement should be stated in the purchase specification.
JIS G 3454 and JIS G 3455 both cover carbon steel pressure piping, but they serve different pressure-service requirements.
| Standard | Service Scope |
|---|---|
| JIS G 3454 | Carbon steel pipes for pressure service, with the standard scope covering service temperatures up to approximately 350°C |
| JIS G 3455 | Carbon steel pipes for high-pressure service |
For high-pressure piping projects, JIS G 3455 should be reviewed rather than selecting JIS G 3454 solely by pipe dimensions or temperature.
Final material selection should follow the applicable piping design code, design pressure, design temperature and project material specification.
| Parameter | Capability |
|---|---|
| Grades | STPG370 / STPG410 |
| Product Form | Seamless Carbon Steel Pipe |
| Manufacturing | Cold Drawn / Cold Rolled |
| Outside Diameter | 6–114 mm |
| Wall Thickness | 0.8–25 mm |
| Length | Up to 40 m |
| Heat Treatment | According to Manufacturing Condition / Purchase Specification |
| Inspection | Hydrostatic / UT / ET as specified |
| Documentation | MTC / Inspection Documentation / TPI as required |
| Third-Party Inspection | Available upon request |
| Custom Sizes | Subject to grade and technical review |
| MOQ | According to grade, size and production requirements |
JIS G 3454 standard requirements and FYN manufacturing capability are stated separately.
Actual grade and size availability is confirmed according to grade, outside diameter, wall thickness, length, quantity, heat treatment and inspection requirements.
JIS G 3454 carbon steel pipes are used in pressure piping systems operating within the applicable material and design conditions.
For pressure-containing piping systems carrying liquids, gases and process media.
For applicable industrial steam and condensate piping systems operating within the material and design limits.
For plant hot-water and thermal utility systems requiring carbon steel pressure pipe.
For process piping where JIS G 3454 STPG370 or STPG410 is specified by the project material specification.
For pressure piping used in manufacturing plants, utility facilities and industrial equipment installations.
For maintenance projects requiring replacement of existing JIS G 3454 STPG370 or STPG410 piping.
JIS G 3454 should not be selected solely from operating temperature. Design pressure, service medium, corrosion allowance and the applicable piping code must also be considered.
Available documentation can include:
Required documentation should be specified during the RFQ stage.
Typical export packing includes:
Pipe ends can be supplied according to the applicable project requirement.
Long-length pipes may require special packing and transportation arrangements.
Production lead time depends on grade, dimensions, quantity, heat treatment and inspection requirements.
For quotation, please specify:
JIS G 3454 + Grade + Nominal Size / OD + Wall Thickness / Schedule + Length + Quantity
The required grade should be clearly identified as STPG370 or STPG410.
| Required Information | Details |
|---|---|
| Standard | JIS G 3454 |
| Grade | STPG370 / STPG410 |
| Pipe Size | Nominal pipe size or outside diameter |
| Wall Thickness | Specified wall thickness or schedule |
| Length | Required pipe length |
| Quantity | Required order quantity |
| Manufacturing Method | Seamless manufacturing requirement |
| Dimensional Tolerances | If specifically required |
| Heat Treatment | If specified |
| Testing | Pressure test / NDT requirements |
| End Preparation | Required end preparation |
| Surface Condition | If specified |
| Documentation | Inspection documentation requirements |
| Third-Party Inspection | If required |
| Delivery | Delivery destination |
For project enquiries, send your piping specification, MTO, drawing or technical specification for technical review.
For an accurate quotation, please send your required grade, nominal pipe size or outside diameter, wall thickness or schedule, length and quantity.
For pressure-piping projects, please also provide the applicable design pressure, design temperature, service medium, NDT requirements and inspection documentation requirements.
For high-pressure applications, send the complete piping specification so the applicable material standard can be reviewed before quotation.
