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Industrial STB35 Hot Rolled Heat Exchanger Tube JIS G 3461

Basic Information
Place of Origin: China
Certification: ISO9001
Packaging Details: In Bundles, Woodenbox As Your Requirement
Detail Information
Name: JIS G3461 STB35 Hot Rolled Round Carbon Steel Tubes For Boiler And Heat Exchanger Keyword: Heat Exchanger Tube
Standard: ASTM,GB,DIN.JIS Grade: Carbon Steel Tube Q235 Q345
Thickness: 0.5 - 50 Mm Shape: Round/Square/Rectangle
Surface Treatment: Hot Rolled, Polished Bright/mirror Surface Wall Thickness: 2 - 60 Mm
Certificate: ISO9001, ISO14001, TS16949 O.D: 8mm-508mm
Ends: Plain Beveled Square Cut Material: STB340 STB410 STB510
Usage: Petroleum, Chemical,gas, Water, Metallurgy, Construction Length: 12M, 6m, 6.4M
Size: 1/2"-48" (DN15mm-1200mm) Technology: Hot Rolled Cold Rolled
High Light:

G3461 Heat Exchanger Tube


STB35 Heat Exchanger Tube


jis g 3461 Tube

Product Description

JIS G3461 STB35 Hot Rolled Round Carbon Steel Tubes for Boiler and Heat Exchanger 



 Material and Specification

JIS G3461 STB35 is a Japanese Industrial Standard specification that covers carbon steel tubes used for boilers and heat exchangers. These tubes are hot rolled and have a round shape. The material composition of STB35 conforms to the chemical composition requirements specified by JIS

Key Features

  • High Heat Transfer Efficiency: STB35 tubes are designed to offer excellent heat transfer efficiency, making them suitable for use in boilers and heat exchangers.
  • Good Mechanical Properties: These carbon steel tubes possess good mechanical properties, allowing them to withstand high temperatures and pressures.
  • Durable and Reliable: STB35 tubes are manufactured with high-quality carbon steel, ensuring durability, reliability, and long service life.
  • Easy to Fabricate: The hot rolled round shape of STB35 tubes allows for easy fabrication, making them convenient to use in various applications.



Chemical Composition (Table presentation)

Element STB35 Chemical Composition (%)
Carbon (C) 0.08 - 0.18
Silicon (Si) 0.10 - 0.35
Manganese (Mn) 0.30 - 0.60
Phosphorus (P) 0.035 max
Sulfur (S) 0.035 max

Mechanical Properties (Table presentation)

Property STB35 Mechanical Properties
Tensile Strength 315 MPa min
Yield Strength 205 MPa min11
Elongation 35% min
Hardness HRB 35 - 95

Steel Grade

STB35 belongs to the carbon steel grade specified in JIS G3461. It is categorized as a low carbon steel grade suitable for use in boiler and heat exchanger applications.


JIS G3461 STB35 carbon steel tubes find application in various industries, primarily in the manufacturing of boilers and heat exchangers. They are specifically designed to transfer heat efficiently in these systems. STB35 tubes are commonly used in power plants, petrochemical plants, refineries, and other industrial facilities where heat exchange processes occur.

Possible Alternative Grades

While STB35 is a popular choice, there are alternative grades available that may suit specific requirements. Some possible alternative grades for carbon steel tubes in boiler and heat exchanger applications include STB33, STB42, and STB52. These grades may offer different mechanical properties or chemical compositions to cater to different operational conditions or design considerations. Consulting with technical experts or referencing industry standards can help in selecting the most suitable alternative grade for specific applications.


Industrial STB35 Hot Rolled Heat Exchanger Tube JIS G 3461 0


Q: What product information must I provide before making a purchase?
Please provide the grade, width, thickness, and surface treatment requirements, as well as the quantities you require.

Q: What shipping ports are there?
We normally ship from Shanghai,Tianjin, Qingdao, and Ningbo ports

Q: Is it possible to send samples?
Of course, we offer free samples and express shipping to customers all over the world.

Q: Do you offer a service for customized products?
Yes, we can produce according to your specifications and drawings.

Q: Can I pay you a visit at your factory?
Customers from all around the world are welcome to visit our factory.

Q: Can you assist me in importing steel products for the first time?
Yes, we have shipping agent who will arrange the shipment with you.

Q: Do you have any MOQ limit for production?
We don’t have any MOQ limit. But as for our steel pipe product, we usually use container transport for lower freight. In the case of express delivery, high freight charges will be generated.

Q: Is it OK to print my logo on the product or the carton packing?
Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q: How to pack the product?
The inner layer has a waterproof paper outer layer, iron packaging, and is fixed with a fumigated wooden pallet. It
can effectively protect products from corrosion during ocean transportatio



Contact Details

Whatsapp : +8613961408918