{"id":6440,"date":"2025-07-09T18:11:45","date_gmt":"2025-07-09T10:11:45","guid":{"rendered":"https:\/\/alllandpipes.com\/?post_type=etheme_portfolio&p=6440"},"modified":"2025-12-17T18:56:37","modified_gmt":"2025-12-17T10:56:37","slug":"jis-g3454","status":"publish","type":"etheme_portfolio","link":"https:\/\/alllandpipes.com\/fr\/standards\/jis-g3454.html","title":{"rendered":"JIS G3454"},"content":{"rendered":"
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JIS G3454:2017 – Carbon Steel Pipes for Pressure Service<\/b><\/strong><\/span><\/h2>

1. D\u00e9finition de la norme et contexte<\/b><\/strong><\/span><\/h3>

JIS G3454, JIS G3455,\u2002JIS G3456 Japanese Standard (JIS) G3454 and G3455\/ G3456 It isJapanese Industrial Standard (JIS), developed by JISC,. This current 2017 edition replaces the 2012 edition and changes some sizing (wall\u2002thickness) in section 2.1. This specification covers minimum-wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures Manufacture: tubes to this specification are manufactured by transverse welding, of which the straight seamm welded steel pipe is a single-strip of steel without jionts;The other is the product that steel strip is butt welded.<\/p>

Key Technical Evolution:<\/p>

Version History: Originally published 1988; substantial revisions in 2005,\u20022007, 2012, 2017<\/p>

System Notation: JIS Not Equals ANSI\/DIN;\u2002Japan Petroleum Institute (JPI) furnished ANSI-equivalent standards<\/p>

Critical Features:<\/p>

It adopts Sch thickness series(Sch10-Sch160), which are\u2002the generally mentioned steel pipe thickness series, and partially permitted by standard ANSI B36. 10<\/p>

Covers OD size range: 10.5 to\u2002660.4 mm (0.413 in to 26.000 in).<\/p>

Not for\u2002high temp applications(>350\u00b0 need to use JIS G3456)<\/p>

2. Champ d'application<\/b><\/strong><\/span><\/h3>

2.1 Applications primaires<\/b><\/strong><\/span><\/h4>

Industrial Systems<\/b><\/strong>:<\/p>

Petrochemical: Low-pressure steam, cooling water lines<\/p>

Power: Boiler feedwater, heat exchanger tubing<\/p>

Manufacturing: Compressed air, hydraulic oil systems<\/p>

Services exclus<\/b><\/strong>:<\/p>

Temperatures >350\u00b0C<\/p>

Corrosive media (e.g., acidic gases) without protective coatings<\/p>

2.2 Service Conditions<\/b><\/strong><\/span><\/h4>

Pression nominale<\/b><\/strong>: Sch thickness grades match pressure needs (e.g., Sch40 \u22642.5 MPa)<\/p>

Environment<\/b><\/strong>: Neutral soils (pH 4\u201310); corrosive conditions require coatings<\/p>

3. Dimensions et tol\u00e9rances<\/b><\/strong><\/span><\/h3>

3.1 Plages de taille<\/b><\/strong><\/span><\/h4>
Param\u00e8tres<\/b><\/strong><\/td>Gamme<\/b><\/strong><\/td>Notes<\/b><\/strong><\/td><\/tr>
Diam\u00e8tre ext\u00e9rieur<\/b><\/strong><\/td>10.5\u2013660.4 mm<\/td>DN6A\u2013DN650A<\/td><\/tr>
\u00c9paisseur de la paroi<\/b><\/strong><\/td>2.4\u201325.4 mm<\/td>10 Sch grades (10\u2013160)<\/td><\/tr><\/tbody><\/table><\/figure>

3.2 Tol\u00e9rances cl\u00e9s<\/b><\/strong><\/span><\/h4>

Table: Geometric Tolerances<\/p>

Param\u00e8tres<\/b><\/strong><\/td>\u00c9cart admissible<\/b><\/strong><\/td>Conditions<\/b><\/strong><\/td><\/tr>
Diam\u00e8tre ext\u00e9rieur<\/b><\/strong><\/td>\u00b10.3 mm (OD\u226434 mm)<\/td>Precision small pipes<\/td><\/tr>
\u00b10.8% OD (OD\u226542.7 mm)<\/td>Large-diameter pipes<\/td><\/tr>
\u00c9paisseur de la paroi<\/b><\/strong><\/td>\u00b10.3 mm (t<3 mm)<\/td>Thin-wall pipes<\/td><\/tr>
\u00b110% t (t\u22653 mm)<\/td>Standard thickness<\/td><\/tr>
Ovalit\u00e9 de l'extr\u00e9mit\u00e9 du tube<\/b><\/strong><\/td>\u22641% OD (dans les 100 mm de l'extr\u00e9mit\u00e9)<\/td>Ensures weld alignment<\/td><\/tr>
Rectitude<\/b><\/strong><\/td>\u22640.2% pipe length<\/td>Full-length measurement<\/td><\/tr><\/tbody><\/table><\/figure>

Special<\/b><\/strong>: OD>350 mm pipes require circumference verification (\u03c0=3.14).<\/p>

4. Exigences en mati\u00e8re de mat\u00e9riaux et de performances<\/b><\/strong><\/span><\/h3>

4.1 Grades and Chemical Composition<\/b><\/strong><\/span><\/h4>

Table: Chemical Composition (wt%, Ladle Analysis)<\/p>

\u00c9l\u00e9ment<\/b><\/strong><\/td>STPG370<\/b><\/strong><\/td>STPG410<\/b><\/strong><\/td><\/tr>
C \u2264<\/b><\/strong><\/td>0.25<\/td>0.30<\/td><\/tr>
Si \u2264<\/b><\/strong><\/td>0.35<\/td>0.35<\/td><\/tr>
Mn<\/b><\/strong><\/td>0.30\u20130.90<\/td>0.30\u20131.00<\/td><\/tr>
P \u2264<\/b><\/strong><\/td>0.040<\/td>0.040<\/td><\/tr>
S \u2264<\/b><\/strong><\/td>0.040<\/td>0.040<\/td><\/tr><\/tbody><\/table><\/figure>

Impurity Control<\/b><\/strong>: Low P\/S limits minimize cold brittleness.<\/p>

4.2 Propri\u00e9t\u00e9s m\u00e9caniques<\/b><\/strong><\/span><\/h4>

Table: Mechanical Requirements<\/p>

Grade<\/b><\/strong><\/td>R\u00e9sistance \u00e0 la traction (MPa)<\/b><\/strong><\/td>Limite d'\u00e9lasticit\u00e9 (MPa)<\/b><\/strong><\/td>\u00c9longation (%)<\/b><\/strong><\/td>Flattening Test<\/b><\/strong><\/td><\/tr>
STPG370<\/b><\/strong><\/td>\u2265370<\/td>\u2265215<\/td>\u226530 (longitudinal)<\/td>H \u2264 0.85D, no crack<\/td><\/tr>
STPG410<\/b><\/strong><\/td>\u2265410<\/td>\u2265245<\/td>\u226525 (longitudinal)<\/td>H \u2264 0.85D, no crack<\/td><\/tr><\/tbody><\/table><\/figure>

\u00a0<\/b><\/strong>Special Provisions<\/b><\/strong>:<\/span><\/p>

Thin-Wall Adjustment<\/b><\/strong>: For t<8 mm, elongation may decrease 1.5% per 1 mm thickness reduction<\/p>

R\u00e9sistance de la soudure<\/b><\/strong>: \u226595% of base metal tensile strength<\/p>

5. Testi<\/b><\/strong>ng and<\/b><\/strong>\u00a0Contr\u00f4le qualit\u00e9<\/b><\/strong><\/span><\/h3>

5.1 Tests obligatoires<\/b><\/strong><\/span><\/h4>

Test de pression<\/b><\/strong>:<\/p>

Hydrostatic\/pneumatic at \u22651.5\u00d7 working pressure (\u22655 s hold)<\/p>

Alternative: Eddy current testing (EN 10246-1) for DN<600 mm<\/p>

Destructive Tests<\/b><\/strong>:<\/p>

Tensile test: 2 samples per \u2264100-pipe batch<\/p>

Flattening test: Mandatory for welded pipes (H \u2264 0.85D)<\/p>

5.2 Examen non destructif (END)<\/b><\/strong><\/span><\/h4>

Inspection des soudures<\/b><\/strong>: 100% UT or RT for welded pipes (RT acceptance: JIS Z3104 Level II)<\/p>

D\u00e9fauts de surface<\/b><\/strong>: Repair\/remove if depth >12.5% wall thickness<\/p>

6. Engineering Applications and Limitations<\/b><\/strong><\/span><\/h3>

6.1 Grade Selection Examples<\/b><\/strong><\/span><\/h4>
Application<\/b><\/strong><\/td>Recommended Pipe<\/b><\/strong><\/td>Service Conditions<\/b><\/strong><\/td><\/tr>
Steam distribution<\/td>STPG370-Sch40<\/td>\u22642.5 MPa, \u2264350\u00b0C<\/td><\/tr>
High-pressure feedwater<\/td>STPG410-Sch80<\/td>\u22654.0 MPa, \u2264300\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>

6.2 Contraintes techniques<\/b><\/strong><\/span><\/h4>

International Compatibility<\/b><\/strong>:<\/p>

JIS flange ratings (2K\u201363K) incompatible with ANSI PN\/Class<\/p>

Requires JPI standards for ANSI alignment<\/p>

Thickness Coverage<\/b><\/strong>:<\/p>

No provisions for t>25.4 mm (custom agreement needed)<\/p>

Impact Testing<\/b><\/strong>:<\/p>

Not required by default; mandatory for low-temp services via contract<\/p>

7. Conclusion and Technical Outlook<\/b><\/strong><\/span><\/h3>

JIS G3454 provides a\u00a0reliable technical foundation<\/b><\/strong>\u00a0for pressure piping through:<\/p>

Standardized Thickness Grading<\/b><\/strong>: Sch series enables precise pressure matching<\/p>

Material Consistency<\/b><\/strong>: Strict P\/S control (\u22640.040%) ensures fracture resistance<\/p>

Manufacturing Flexibility<\/b><\/strong>: Accommodates seamless\/welded processes<\/p>

Future Developments<\/b><\/strong>:<\/p>

Hydrogen Compatibility<\/b><\/strong>: Low-carbon variants (e.g., STPG370-L) for hydrogen transport<\/p>

Global Harmonization<\/b><\/strong>: Enhanced ANSI alignment via JPI standards<\/p>

Orientations pour la mise en \u0153uvre<\/b><\/strong>:<\/p>

For >300\u00b0C services: Prefer STPG410-Sch80 combinations<\/p>

Export projects: Specify JIS-JPI standard conversions<\/p>

Buried pipelines: Apply external coatings (e.g., coal-tar epoxy)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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