JIS G3458 Alloy Steel Pipes

Boilers And Petrochemical Applications

Jis g3458 alloy steel pipes, designed for high-temperature and high-pressure applications, offer excellent corrosion resistance and durability.

JIS G3458 Alloy Steel Pipes High-Temperature Piping Seamless Alloy Pipes Boiler Tubes +2 More

JIS G3458 Alloy Steel Pipes

Boilers And Petrochemical Applications

Jis g3458 alloy steel pipes, designed for high-temperature and high-pressure applications, offer excellent corrosion resistance and durability. available in grades stpa12 to stpa26, these seamless pipes are ideal for boilers, power plants, and petrochemical industries.

JIS G3458 Alloy Steel Pipes High-Temperature Piping Seamless Alloy Pipes Boiler Tubes +2 More

JIS G3458 Alloy Steel Pipes are engineered for high-temperature and high-pressure environments, making them ideal for boiler pipeline protection and petrochemical piping. Conforming to the Japanese Industrial Standard (JIS), these seamless pipes are designed to withstand extreme conditions in industries such as power generation, refineries, and chemical processing. Available in grades STPA12, STPA20, STPA22, STPA23, STPA24, STPA25, and STPA26, these pipes offer superior corrosion resistance and durability.

Manufactured through seamless processes or electric resistance welding (ERW), JIS G3458 Alloy Steel Pipes are available in outer diameters from 6 mm to 1066.8 mm and wall thicknesses from 1 mm to 80 mm. Lengths can be customized, typically ranging from 6 to 12 meters, to meet specific project requirements. The seamless construction ensures high strength and reliability, while ERW options provide cost-effective solutions for less demanding applications. Heat treatments such as low-temperature annealing, isothermal annealing, or normalizing and tempering enhance mechanical properties, ensuring optimal performance under high temperatures up to 650°C.

The alloy composition, including elements like chromium and molybdenum, enhances corrosion resistance and resistance to oxidation and creep, making these pipes suitable for handling corrosive fluids and gases in petrochemical plants and power stations. For example, STPA24 and STPA26, with higher chromium content, offer exceptional thermal stability and are used in high-pressure boiler systems and superheaters. Rigorous testing, including tensile, flattening, hardness, and hydrostatic tests, ensures compliance with JIS G3458 standards. These pipes typically achieve a minimum tensile strength of 380 MPa for STPA12 and 410 MPa for STPA22 and STPA24.

JIS G3458 Alloy Steel Pipes support a range of applications, including high-temperature conveying fluid pipes for heaters, boiler tubes, and piping for oil and gas industries. Their ability to resist pipeline wear and thermal stress makes them critical for high-pressure and subcritical power station environments. Surface treatments like varnishing or galvanizing prevent rust, while plain or beveled ends facilitate easy installation. Compared to standards like ASTM A335 or DIN 17175, JIS G3458 offers similar high-temperature performance with excellent dimensional tolerances and fabrication flexibility.

With advanced rolling technology, manufacturers like Sunny Steel ensure minimal dimensional deviations, delivering reliable and high-quality industrial piping solutions. These pipes are not suitable for low-temperature applications due to their optimized alloy composition for high-temperature strength, making standards like JIS G3460 more appropriate for cold environments.

Key Benefits

Corrosion Resistance

High chromium and molybdenum content ensures superior resistance to corrosion in harsh environments.

High-Temperature Strength

Withstands temperatures up to 650°C, ideal for high-pressure boiler systems.

Durable Construction

Seamless design ensures long-term reliability in demanding industrial applications.

Fabrication Flexibility

Supports cutting, welding, and bending for customized piping solutions.

Cost-Effective

Reduces maintenance costs due to enhanced durability and corrosion resistance.

Quality Assurance

Certified with tests like ultrasonic and hydrostatic to meet JIS G3458 standards.

Technical Specifications

Chemical Composition of JIS G3458 Alloy Steel Pipes
Grade	C (% max)	Si (%)	Mn (%)	P (% max)	S (% max)	Cr (%)	Mo (%)
STPA12	0.10-0.20	0.10-0.50	0.30-0.80	0.035	0.035	-	0.45-0.65
STPA22	0.15	0.50 max	0.30-0.60	0.035	0.035	0.80-1.25	0.45-0.65
STPA24	0.15	0.50 max	0.30-0.60	0.030	0.030	1.90-2.60	0.87-1.13

Mechanical Properties of JIS G3458 Alloy Steel Pipes
Grade	Tensile Strength (MPa min)	Yield Strength (MPa min)	Elongation (% min)
STPA12	380	205	30
STPA22	410	205	30
STPA24	410	205	30

Comparison of JIS G3458 with ASTM A335 and DIN 17175
Feature	JIS G3458	ASTM A335	DIN 17175
Material Type	Alloy Steel	Ferritic Alloy Steel	Seamless Steel
Temperature Range	Up to 650°C	Up to 650°C	Up to 600°C
Tensile Strength (MPa)	≥380 (STPA12), ≥410 (STPA22/STPA24)	≥415 (P11), ≥415 (P22)	≥410 (13CrMo44)
Yield Strength (MPa)	≥205	≥205 (P11), ≥205 (P22)	≥220 (13CrMo44)
Corrosion Resistance	High (Cr-Mo alloys)	High (Cr-Mo alloys)	Moderate to High
Dimensional Tolerances	OD: ±0.5–1%, WT: ±10–12.5%	OD: ±1%, WT: +22% / -12.5%	OD: ±0.75–1%, WT: ±10–15%
Fabrication Options	Cutting, welding, bending	Cutting, welding, bending	Cutting, welding, bending
Applications	Boilers, petrochemical, power plants	Power plants, refineries, petrochemical	Boilers, high-pressure piping
Key Advantage	High corrosion resistance	Wide range of grades	Robust high-temperature performance
Low-Temperature Suitability	Not suitable	Not suitable	Not suitable

Heat Treatment Requirements for STPA Steel Grades
Grade	Heat Treatment
STPA 12	Low temperature annealing, isothermal annealing, full annealing, normalizing or normalizing followed by tempering
STPA 20
STPA 22
STPA 23	Low temperature annealing, isothermal annealing, full annealing or followed by tempering
STPA 24
STPA 25	Isothermal annealing, full annealing or normalizing followed by tempering
STPA 26

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Standards and Specifications

• JIS G3458 alloy steel pipes specifications
• JIS G3458 STPA22 seamless boiler pipes
• JIS G3458 STPA24 high-temperature standards
• JIS G3458 boiler pipes technical requirements
• JIS G3458 seamless pipes certification

Applications

• JIS G3458 seamless pipes for boiler systems
• JIS G3458 alloy steel pipes for petrochemical plants
• JIS G3458 STPA22 power plant piping
• JIS G3458 high-pressure boiler tubes
• JIS G3458 pipes for oil and gas industries

Material and Grades

• JIS G3458 STPA12 alloy steel pipe grades
• JIS G3458 STPA22 boiler pipe material
• JIS G3458 STPA24 seamless pipe properties
• JIS G3458 alloy steel pipes composition

Manufacturing and Testing

• JIS G3458 seamless boiler pipes manufacturing
• JIS G3458 alloy steel pipes quality testing
• JIS G3458 pipes heat treatment process
• JIS G3458 corrosion-resistant seamless pipes

Procurement and Suppliers

• JIS G3458 alloy steel boiler pipes supplier
• JIS G3458 STPA22 seamless pipes distributors
• JIS G3458 high-temperature pipes price
• JIS G3458 boiler pipes global suppliers

Dimensions and Customization

• JIS G3458 alloy steel pipes dimensions guide
• JIS G3458 seamless boiler pipes tolerances
• JIS G3458 STPA24 pipes custom sizes
• JIS G3458 high-temperature pipes length options

Note: JIS G3458 covers seamless and welded alloy steel pipes for high-temperature service up to 650°C. For detailed specifications, refer to the JIS G3458 standard or contact a certified supplier.

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JIS G3458 specifies seamless alloy steel pipes for high-temperature service, used in power plants, petrochemical plants, and boilers, with grades like STPA12, STPA22, and STPA24.

JIS G3458 includes grades STPA12, STPA20, STPA22, STPA23, STPA24, STPA25, and STPA26, each designed for specific high-temperature applications.

- STPA12: C 0.10–0.20%, Si 0.10–0.50%, Mn 0.30–0.80%, P ≤0.035%, S ≤0.035%, Mo 0.45–0.65%
- STPA22: C ≤0.15%, Si ≤0.50%, Mn 0.30–0.60%, P ≤0.035%, S ≤0.035%, Cr 0.80–1.25%, Mo 0.45–0.65%
- STPA24: C ≤0.15%, Si ≤0.50%, Mn 0.30–0.60%, P ≤0.030%, S ≤0.030%, Cr 1.90–2.60%, Mo 0.87–1.13%

- STPA12: Tensile 380 MPa min, Yield 205 MPa min, Elongation 30% min
- STPA22: Tensile 410 MPa min, Yield 205 MPa min, Elongation 30% min
- STPA24: Tensile 410 MPa min, Yield 205 MPa min, Elongation 30% min

OD: 6–1066.8 mm, WT: 1–80 mm, Length: 6–12 m (customizable). Tolerances: OD ±0.5–1%, WT ±10–12.5%.

Seamless, electric resistance welding (ERW), or butt welding, with heat treatments like annealing or normalizing to enhance properties.

Tensile, flattening, hardness, hydrostatic, ultrasonic, and eddy current tests ensure compliance with JIS G3458 standards.

Used in boilers, superheaters, petrochemical piping, power plants, and oil and gas industries for high-temperature and high-pressure service.

Marked with standard, grade, size, heat number, and manufacturer ID. Packaged in hexagonal or round bundles with steel straps, up to 5000 kg.

Equivalents include ASTM A335 P12 (STPA12), P22 (STPA22), P91 (STPA26), and DIN 17175 13CrMo44 (STPA22).

Industrial Applications

JIS G3458 Alloy Steel Pipes are designed for high-temperature and high-pressure environments, making them essential for boilers, petrochemical plants, and power generation systems.

Boiler Systems

Used in high-pressure boilers for efficient steam production.

Petrochemical Piping

Handles corrosive fluids in refineries and chemical plants.

Power Generation

Reliable for high-pressure piping in power plants.

Superheater Tubes

Enhances efficiency in high-temperature steam systems.

Oil and Gas Piping

Durable for transporting oil and gas under high pressure.

Chemical Processing

Resists corrosion in aggressive chemical environments.

JIS G3458 Alloy Steel Pipes

JIS G3458 Alloy Steel Pipes