JIS G3454 Carbon Steel Pipe for Pressure Service
JIS G3454 Carbon Steel Pipe Manufacturer
Huayang Steel Pipe manufactures JIS G3454 carbon steel pipes for pressure service, providing reliable piping solutions for industrial plants, energy facilities, process systems, and pressure piping applications.
JIS G3454 specifies carbon steel pipes used for pressure service. The standard covers requirements for chemical composition, mechanical properties, dimensions, dimensional tolerances, manufacturing methods, testing, and inspection. The principal grades are STPG370 and STPG410, offering different levels of tensile and yield strength for pressure piping applications.
Huayang manufactures JIS G3454 steel pipes using advanced HFW and ERW technology within its applicable production range. Pipes can be supplied in specified outside diameters, wall thicknesses, lengths, and end conditions according to project requirements.
JIS G3454 Steel Pipe Product Range
Based on Huayang's current manufacturing capability:
| Product Type | Manufacturing Process | Outside Diameter | Wall Thickness | Length |
|---|---|---|---|---|
| JIS G3454 Carbon Steel Pipe | HFW / ERW | Φ48–Φ660.4 mm | 2.0–22 mm | 6–27 m |
For JIS G3454 orders, the final outside diameter, wall thickness, length, steel grade, and manufacturing method shall be confirmed according to the purchase specification.
JIS G3454 Steel Pipe Specification
| Item | Specification |
|---|---|
| Standard | JIS G3454 |
| Standard Name | Carbon Steel Pipes for Pressure Service |
| Steel Grades | STPG370, STPG410 |
| Manufacturing Process | HFW / ERW |
| Outside Diameter | Φ48–Φ660.4 mm |
| Wall Thickness | 2.0–22 mm |
| Length | 6–27 m or Customized |
| Pipe End | Plain End / Beveled End |
| Surface | Black / Oiled / Coated |
| Application | Pressure Piping |
JIS G3454 dimensional tables are based on nominal diameter and specified wall thickness, with commonly referenced schedules including Schedule 10, 20, 30, 40, 60 and 80.
JIS G3454 Size and Dimension Table
The following table presents representative JIS G3454 sizes commonly used in pressure piping. The complete dimensional range should be specified according to the applicable JIS dimensional table and purchase requirements.
| Nominal Size | NPS | Outside Diameter mm | Typical Wall Thickness mm |
|---|---|---|---|
| 15A | 1/2" | 21.7 | 2.8 |
| 20A | 3/4" | 27.2 | 2.9 |
| 25A | 1" | 34.0 | 3.4 |
| 32A | 1-1/4" | 42.7 | 3.6 |
| 40A | 1-1/2" | 48.6 | 3.7 |
| 50A | 2" | 60.5 | 3.9 |
| 65A | 2-1/2" | 76.3 | 5.2 |
| 80A | 3" | 89.1 | 5.5 |
| 100A | 4" | 114.3 | 6.0 |
| 125A | 5" | 139.8 | 6.6 |
| 150A | 6" | 165.2 | 7.1 |
| 200A | 8" | 216.3 | 8.2 |
| 250A | 10" | 267.4 | 9.3 |
| 300A | 12" | 318.5 | 10.3 |
| 350A | 14" | 355.6 | 11.1 |
| 400A | 16" | 406.4 | 12.7 |
Representative dimensions are based on published JIS G3454 dimensional data.
JIS G3454 Steel Grades
JIS G3454 primarily specifies STPG370 and STPG410 carbon steel grades.
| Grade | Yield Strength Min. | Tensile Strength Min. | Elongation Min. |
|---|---|---|---|
| STPG370 | 215 MPa | 370 MPa | 30% |
| STPG410 | 245 MPa | 410 MPa | 25% |
The mechanical property requirements above are based on published JIS G3454 technical data.
Chemical Composition Requirements
| Grade | C Max. | Si Max. | Mn | P Max. | S Max. |
|---|---|---|---|---|---|
| STPG370 | 0.25% | 0.35% | 0.30–0.90% | 0.040% | 0.040% |
| STPG410 | 0.30% | 0.35% | 0.30–1.00% | 0.040% | 0.040% |
The controlled carbon and impurity levels support the required mechanical properties and weldability of the steel.
Mechanical Properties of JIS G3454 Pipe
| Property | STPG370 | STPG410 |
|---|---|---|
| Yield Strength Min. | 215 MPa | 245 MPa |
| Tensile Strength Min. | 370 MPa | 410 MPa |
| Elongation Min. | 30% | 25% |
For specific specimen orientations and thickness-dependent elongation requirements, the applicable edition of JIS G3454 shall be followed. Published technical references also indicate different elongation values depending on specimen type and pipe size.
Manufacturing Process
Huayang manufactures JIS G3454 carbon steel pipe through controlled HFW/ERW production.
| Production Step | Description |
|---|---|
| Raw Material Inspection | Chemical and Mechanical Verification |
| Coil Preparation | Slitting and Edge Preparation |
| Forming | Precision Roll Forming |
| High Frequency Welding | Continuous Longitudinal Welding |
| Weld Bead Removal | Internal and External Scarfing |
| Heat Treatment / Sizing | According to Product Requirement |
| Straightening | Dimensional Correction |
| Cutting | Fixed or Customized Length |
| Final Inspection | Comprehensive Quality Control |
JIS G3454 permits applicable manufacturing methods including electric resistance welding, while the exact manufacturing route depends on grade and purchaser requirements.
Dimensional Tolerances
Dimensional accuracy is critical for pressure piping installation and connection.
| Parameter | Typical JIS G3454 Requirement |
|---|---|
| Outside Diameter | According to Nominal Size |
| Wall Thickness | According to Specified Thickness |
| Straightness | Practically Straight |
| Pipe End | Square to Pipe Axis |
| Surface | Free from Defects Detrimental to Service |
| Unit Mass | Controlled According to Standard |
For electric resistance welded steel pipe, published JIS G3454 data indicate outside-diameter tolerances of ±0.3 mm for smaller sizes and ±0.8% for larger nominal sizes, with special provisions for larger diameters. Wall-thickness tolerance is generally ±0.3 mm below 3 mm thickness and ±10% at 3 mm or above.
Hydrostatic Test Requirements
Hydrostatic testing is an important quality-control method for pressure-service pipe.
| Inspection Item | Requirement |
|---|---|
| Hydrostatic Test | Available |
| Test Pressure | According to Schedule and JIS Requirement |
| Test Holding | According to Applicable Standard |
| Leakage | Not Permitted |
| Weld Integrity | No Leakage or Harmful Defect |
For example, published JIS G3454 Schedule 40 data list hydrostatic test pressures for representative nominal sizes, with values varying according to pipe size and applicable schedule.
Inspection and Testing
Huayang can provide comprehensive inspection according to JIS G3454 and project requirements.
| Inspection Item | Test / Inspection Method |
|---|---|
| Chemical Composition | Spectrometer |
| Tensile Strength | Tensile Test |
| Yield Strength | Tensile Test |
| Elongation | Tensile Test |
| Hydrostatic Test | Hydraulic Pressure Test |
| Weld Inspection | Visual Examination |
| Ultrasonic Testing | UT When Required |
| Eddy Current Testing | Available |
| Dimensional Inspection | OD / WT / Length |
| Surface Inspection | Visual Examination |
Quality Requirements
JIS G3454 requires the finished pipe to meet dimensional, mechanical, surface, and manufacturing requirements.
| Quality Item | Requirement |
|---|---|
| Weld Seam | Sound and Uniform |
| Surface | Free from Defects Detrimental to Practical Use |
| Straightness | Practically Straight |
| Pipe Ends | Square to Axis |
| Dimensions | Within Applicable Tolerances |
| Mechanical Properties | Meet Grade Requirements |
| Chemical Composition | Meet Grade Requirements |
| Hydrostatic Performance | Meet Applicable Test Requirement |
The standard requires the finished pipe to be practically straight, with ends substantially perpendicular to the pipe axis and without defects detrimental to practical use.
Surface Treatment and Processing Services
Huayang provides additional processing services for JIS G3454 carbon steel pipe.
| Service | Capability |
|---|---|
| FBE Coating | Available |
| 2PE Coating | Available |
| 3PE Coating | Available |
| 2PP Coating | Available |
| 3PP Coating | Available |
| Internal Epoxy Coating | Available |
| Pipe Cutting | Available |
| Beveling | Available |
| Hydrostatic Testing | Available |
| Customized Processing | Available |
Huayang Anti-corrosion Processing Capacity
| Item | Production Range |
|---|---|
| Outside Diameter | Φ159–Φ1626 mm |
| Wall Thickness | 4–40 mm |
| Length | 8–16 m |
Applications of JIS G3454 Steel Pipe
JIS G3454 carbon steel pipe is designed for pressure-service applications and is commonly used in industrial piping systems where controlled pressure and temperature conditions are required. The standard is generally associated with service temperatures up to approximately 350°C, while higher-pressure applications are covered by other JIS standards such as JIS G3455.
Typical applications include:
- Industrial pressure piping
- Power generation facilities
- Boiler auxiliary piping
- Petrochemical plants
- Process piping
- Oil and gas facilities
- Water and steam systems
- Industrial equipment
- Energy infrastructure
JIS G3454 vs JIS G3455
This comparison is useful for customers selecting the appropriate Japanese standard.
| Item | JIS G3454 | JIS G3455 |
|---|---|---|
| Product | Carbon Steel Pipe for Pressure Service | Carbon Steel Pipe for High Pressure Service |
| Typical Grades | STPG370 / STPG410 | STS370 / STS410 / STS480 |
| Typical Application | Pressure Piping | High Pressure Piping |
| Temperature / Pressure | General Pressure Service | Higher Pressure Service |
| Manufacturing | ERW / Seamless as Applicable | ERW / Seamless as Applicable |
| Typical Strength Range | 370–410 MPa Tensile | Up to 480 MPa Tensile |
JIS G3454 is intended for general pressure service, while JIS G3455 is used when higher-pressure service requirements apply.
Why Choose Huayang JIS G3454 Steel Pipe
| Advantage | Description |
|---|---|
| Standard | JIS G3454 |
| Grades | STPG370 / STPG410 |
| Manufacturing | HFW / ERW |
| Outside Diameter | Φ48–Φ660.4 mm |
| Wall Thickness | 2.0–22 mm |
| Length | 6–27 m |
| Inspection | Mechanical, Dimensional, Hydrostatic and NDT |
| Surface Treatment | FBE, 2PE, 3PE, 2PP, 3PP |
| Processing | Cutting, Beveling, Hydrostatic Testing |
| Custom Manufacturing | Available |
JIS G3454 Steel Pipe for Pressure Service
With controlled HFW/ERW production, strict dimensional inspection, and comprehensive testing capabilities, Huayang Steel Pipe provides JIS G3454 carbon steel pipe solutions for pressure-service applications. STPG370 and STPG410 grades can be manufactured according to applicable standard requirements and customer specifications.
For projects requiring specific schedules, dimensions, testing procedures, surface treatment, or additional inspection, Huayang can manufacture and process the steel pipe according to the approved technical specification.