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Alloy Steel Boiler Tube JIS G3462

JIS G3462 STBA12, STBA13, STBA20, STBA22, and STBA23 are alloy steel boiler tubes designed for high-temperature and high-pressure applications. These grades offer excellent strength, corrosion resistance, and weldability, making them ideal for use in power plants, industrial boilers, heat exchangers, and petrochemical industries, ensuring durability and reliability in extreme conditions.

Description

JIS G3462 STBA12 STBA13 STBA20 STBA22 STBA23 Alloy Steel Boiler Tube

Material

JIS G3462 Alloy Steel Boiler Tube specifies the requirements for alloy steel tubes used in boiler applications. The grades STBA12, STBA13, STBA20, STBA22, and STBA23 are designed to withstand high temperatures and pressures, making them suitable for various industrial applications, particularly in the energy sector.

Specification

The specifications outlined in JIS G3462 Alloy Steel Boiler Tube include the chemical composition, mechanical properties, and manufacturing processes of the alloy steel tubes. These tubes are primarily used in the construction of boilers and heat exchangers, where they must endure extreme conditions.

Key Features

  • High Strength: These tubes are engineered to withstand high pressure and temperature, ensuring safety and reliability in boiler operations.
  • Corrosion Resistance: The alloy composition provides resistance to oxidation and corrosion, extending the lifespan of the tubes in harsh environments.
  • Weldability: The materials can be easily welded, allowing for flexible design and assembly in boiler systems.
  • Durability: Designed for long service life, these tubes can operate effectively under extreme conditions, reducing maintenance costs.

Chemical Composition

The following table presents the chemical composition of the alloy steel grades STBA12, STBA13, STBA20, STBA22, and STBA23.

Grade C (%) Si (%) Mn (%) P (%) S (%) Cr (%) Mo (%) Ni (%)
STBA12 0.12 0.20 0.40 0.025 0.025 0.50 0.10 0.30
STBA13 0.13 0.20 0.50 0.025 0.025 0.50 0.10 0.30
STBA20 0.20 0.20 0.60 0.025 0.025 0.50 0.10 0.30
STBA22 0.22 0.20 0.70 0.025 0.025 0.50 0.10 0.30
STBA23 0.25 0.20 0.80 0.025 0.025 0.50 0.10 0.30

Mechanical Properties

The mechanical properties of the alloy steel grades are crucial for their performance in high-stress environments. The following table summarizes these properties.

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Hardness (HB)
STBA12 235 400-510 20 120
STBA13 245 410-520 20 125
STBA20 265 430-540 20 130
STBA22 275 440-550 20 135
STBA23 290 450-560 20 140

Steel Grade

The grades STBA12, STBA13, STBA20, STBA22, and STBA23 are categorized under the JIS G3462 standard, which focuses on alloy steel tubes for boiler applications. Each grade is tailored for specific operational conditions, ensuring optimal performance.

Application

These alloy steel boiler tubes are primarily used in:

  • Power Plants: For steam generation and heat transfer in electricity production.
  • Industrial Boilers: In various manufacturing processes requiring steam or hot water.
  • Heat Exchangers: For efficient heat transfer between fluids in chemical and petrochemical industries.
  • Petrochemical Industries: In refining processes where high temperatures and pressures are common.

Possible Alternative Grades

While STBA12, STBA13, STBA20, STBA22, and STBA23 are commonly used, alternative grades may include:

  • ASTM A335 P11: Suitable for high-temperature service.
  • ASTM A335 P22: Offers good corrosion resistance and strength.
  • EN 10216-2 P235GH: A European standard that provides similar properties for pressure applications.

Additional information

Application

Boiler, Heat Exchanger

Material

Alloy Steel, Carbon Steel, Copper

Steel Grade

STBA 12, STBA 13, STBA 20, STBA 22, STBA 23, STBA 24, STBA 25, STBA 26

Technique

Cold Drawn, Cold Rolled, Hot Rolled

Tolerance

±1%

Outer Diameter

25-426mm

Wall Thickness

1-50mm

Alloy Or Not

Is Alloy

Shape

Customer Requirements, Rectangular, Round, Square

OEM

Allow

MOQ

1 Ton

Sample

Allow

Processing Services

Bending, Customers's Requirement, Cutting, Decoiling, Moulding, Punching, Welding

Packing

Customer Requirements, Nylon Braided Tape, Wooden Box

Payment Method

D/A, D/P, L/C, MoneyGram, T/T, Western Union

Custom Made

LOGO, Package, Spray Label

Certification

API, BSI, CE, ISO14001, ISO9001, ROHS, TS16949

Secondary Or Not

Non-secondary

Company Profile

TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and

trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and

credibility among domestic and foreign customers.

The company’s production plant covers an area of over 10,000 square meters, with an annual production

capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which

can satisfy customers’ personalized needs for raw materials in terms of diversity and timeliness.

The group holds shares in more than ten domestic production entities, whose main products include

seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings

( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.),

aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC

deep processing of metal materials such as tubes, rods, and casting parts.

Over the past 30 years, the company has been gradually developing new technologies and materials to meet

the growing needs of customers and various diversified needs, exporting to more than 56 countries and still

increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and

to facilitate one-stop purchasing for customers

Certificate

Workshop Show

Testing equipment

Package