JIS G3461 STB510 Boiler Pipe | Heat Exchanger Tube

JIS-G3461-STB510-Boiler-Pipe-Heat-Exchanger-Tube.webp

When it comes to boiler pipes and heat exchanger tubes, the JIS G3461 STB510 stands out as a reliable and efficient choice. This article will delve into the features, applications, and benefits of JIS G3461 STB510 boiler pipes and heat exchanger tubes. We will explore their specifications, chemical composition, mechanical properties, and more. Let’s dive in!

I. Introduction to JIS G3461 STB510 Boiler Pipe and Heat Exchanger Tube

JIS G3461 STB510 is a Japanese Industrial Standard (JIS) specification that covers carbon steel boiler and heat exchanger tubes. These tubes are designed to withstand high temperatures and pressures, making them ideal for use in boilers, heat exchangers, and other similar applications. The STB510 grade specifically refers to seamless carbon steel tubes.

II. Features and Applications of JIS G3461 STB510 Boiler Pipe and Heat Exchanger Tube

Features:

  • High Temperature Resistance: JIS G3461 STB510 boiler pipes and heat exchanger tubes are capable of withstanding high temperatures, making them suitable for applications involving steam and hot gases.
  • Excellent Corrosion Resistance: These tubes exhibit good resistance to corrosion, ensuring long-term durability and reliability.
  • Superior Mechanical Properties: JIS G3461 STB510 tubes have excellent strength and toughness, allowing them to withstand high-pressure environments.

Applications:

  • Boilers: JIS G3461 STB510 tubes are widely used in various types of boilers, including power boilers, industrial boilers, and utility boilers.
  • Heat Exchangers: These tubes are also commonly employed in heat exchangers, where they facilitate the transfer of heat between fluids.
  • Power Plants: JIS G3461 STB510 tubes find extensive use in power plants for applications such as steam generation and heat recovery systems.
  • Chemical and Petrochemical Industries: The excellent corrosion resistance of these tubes makes them suitable for use in chemical and petrochemical processing plants.

III. Specifications of JIS G3461 STB510 Boiler Pipe and Heat Exchanger Tube

 

Standard: JIS G3461
Carbon Steel Tubes for Boiler and Heat Exchanger
JIS G3461 STB 510 specifies the carbon steel tubes, hereinafter referred to as the “tubes”, used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes, air preheater tubes, etc. of the boiler, and heat exchanger tubes, condenser tubes, catalyzer tubes, etc. used in chemical and petroleum industries.

JIS G3461 STB510 boiler pipes and heat exchanger tubes adhere to specific specifications to ensure their quality and performance. Here are the key specifications:

  • Outer Diameter (OD): 6mm to 219mm
  • Wall Thickness (WT): 1mm to 30mm
  • Length: Customizable, typically ranging from 5 to 12 meters
  • Ends: Plain ends, beveled ends, or threaded ends
  • Surface Finish: Bare, oiled, black painted, or galvanized
  • Tolerance: As per JIS G3461 standard

These specifications provide a clear framework for the manufacturing and use of JIS G3461 STB510 boiler pipes and heat exchanger tubes.

The dimensional tolerances of .JIS G3461 Carbon Steel Tubes for Boiler and Heat Exchanger

Tolerances of Wall Thickness

Tolerances Division of wall
thickness (mm)
Division of method of manufacture Hot finished seamless steel tube Cold finished seamless steel tube Electric resistance welded steel tube
Division of outside diameter (mm) Under 100 100 or over Under 40 40 or over Under 40 40 or over
Tolerances on wall thickness % Under 2 +0.4mm +22

0

+0.3 +18

0

0 0
2 or over to and excl. 2.4 +40 +20

0

+18

0

0
2.4 or over to or excl. 3.8 +35 +35
0 0
3.8 or over to or excl. 4.6 +33 +33
0 0
4.6 or over +28 +28
0 0
Tolerances  on
thickness disparity%
Within 22.8 of wall thickness

Tolerances of Outside Diameter

Division of outside diameter Tolerances on outside diamete
 Hot finished seamless steel tube Cold finished seamless steel tube Electric resistance welded steel tube other than cold finished Cold  finished  electric resistance welded steel tube
Under 25 +0.4

-0.8

【0.10 【1.5 【0.10
25 or over to and excl. 40 【0.15 【0.20 【0.15
40or over to and excl. 50 【0.20 【0.25 【0.20
50 or over to and excl 60 【0.25 【0.30 【0.25
60 or over to and excl. 80 【0.30 【0.40 【0.30
80 or over to and excl. 100 【0.40 +0.40 【0.40
-0.60
100 or over to and excl.12 +0.4

-1.2

+0.40
-0.60
+0.40
-0.80
+0.40
-0.60
120 or over to and excl.160 +0.40
-0.80
+0.40
-1.00
+0.40
-0.80
160 or over to and excl.200 +0.4 +0.40 +0.40 +0.40
-1.8 -1.20 -1.20 -1.20
200 or over +0.4 +0.40 +0.40 +0.40
-2.4 -1.60 -1.60 -1.60

Tolerances of Length

Division Tolerance on length
50 mm or under in
outside diameter
7 m or under in length +0.7 mm
0
Over 7 m in length Add 3 mm to the plus side permissible deviation given above for each increase of 3m or its fraction in length. However, the maximum value shall be 15 mm.
Over  50  mm  in
outside diameter
7 m or under in length +10mm
0
Over 7 m in length Add 3 mm to the plus side permissible deviation given above for each increase of 3m or its fraction in length. However, the maximum value shall be 15mm.

 

IV. Chemical Composition of JIS G3461 STB510 Boiler Pipe and Heat Exchanger Tube

The chemical composition of JIS G3461 STB510 boiler pipes and heat exchanger tubes determines their mechanical and corrosion resistance properties. Here is the typical chemical composition:

  • Carbon (C): 0.27% – 0.34%
  • Silicon (Si): 0.10% – 0.35%
  • Manganese (Mn): 0.30% – 0.60%
  • Phosphorus (P): 0.035% maximum
  • Sulfur (S): 0.035% maximum

The precise chemical composition ensures the desired properties and performance of JIS G3461 STB510 tubes.

V. Mechanical Properties of JIS G3461 STB510 Boiler Pipe and Heat Exchanger Tube

The mechanical properties of JIS G3461 STB510 boiler pipes and heat exchanger tubes are crucial for their performance under high temperatures and pressures. Here are the typical mechanical properties:

  • Tensile Strength: 410MPa minimum
  • Yield Strength: 245MPa minimum
  • Elongation: 25% minimum
  • Hardness: HRB 79 maximum

These mechanical properties ensure the tubes’ ability to withstand the demanding conditions of boiler and heat exchanger applications.

VI. Conclusion

JIS G3461 STB510 boiler pipes and heat exchanger tubes are reliable and efficient components for various industrial applications. Their high-temperature resistance, excellent corrosion resistance, and superior mechanical properties make them suitable for use in boilers, heat exchangers, power plants, and chemical industries. By adhering to the specified dimensions, chemical composition, and mechanical properties, these tubes ensure optimal performance and longevity.

In summary, JIS G3461 STB510 boiler pipes and heat exchanger tubes are a top choice for those seeking reliable and high-performing components in their industrial applications.


FAQ

Q1: What is the difference between a boiler pipe and a heat exchanger tube?

A1: While both boiler pipes and heat exchanger tubes serve the purpose of transferring heat, they differ in their specific applications. Boiler pipes are primarily used in boilers to generate steam, while heat exchanger tubes are utilized in heat exchangers to transfer heat between fluids.

Q2: Can JIS G3461 STB510 tubes be used in high-pressure environments?

A2: Yes, JIS G3461 STB510 tubes are designed to withstand high pressures. Their superior mechanical properties, including high tensile strength and yield strength, make them suitable for use in high-pressure environments.

Q3: Are JIS G3461 STB510 tubes resistant to corrosion?

A3: Yes, JIS G3461 STB510 tubes exhibit excellent corrosion resistance. This makes them ideal for applications in chemical and petrochemical industries, where exposure to corrosive substances is common.

Q4: Can JIS G3461 STB510 tubes be customized in terms of length and surface finish?

A4: Yes, JIS G3461 STB510 tubes can be customized according to specific requirements. The length can be tailored, typically ranging from 5 to 12 meters. Additionally, the surface finish can be chosen from options such as bare, oiled, black painted, or galvanized.

Q5: What are the typical dimensions of JIS G3461 STB510 tubes?

A5: JIS G3461 STB510 tubes have an outer diameter (OD) ranging from 6mm to 219mm and a wall thickness (WT) ranging from 1mm to 30mm. These dimensions provide flexibility in selecting the appropriate size for different applications.


In conclusion, JIS G3461 STB510 boiler pipes and heat exchanger tubes are highly versatile and reliable components for various industrial applications. Their exceptional heat resistance, corrosion resistance, and mechanical properties make them an excellent choice for boilers, heat exchangers, power plants, and chemical industries. By adhering to the specified dimensions, chemical composition, and mechanical properties, these tubes ensure optimal performance and longevity in demanding environments.

Remember to consult with industry professionals and adhere to safety guidelines when selecting and installing boiler pipes and heat exchanger tubes for your specific applications.

Note: This article is for informational purposes only and does not constitute professional advice. Always consult with experts in the field for specific recommendations and guidelines.

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