JIS G3461(Carbon Steel Tubes For Boiler And Heat Exchanger)
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50mt m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
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Specifications of JIS G 3461 / JISG3461 seamless steel pipes
Scope of JIS G 3461 / JISG3461 seamless steel pipes This Japanese Industrial Standard specifies the carbon steel tubes, hereinafter refered to as the "tubes", used for excahnging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes, air preheater tubes, etc. of the boiler, ater tubes, etc. of the boiler, and heat exchanger tubes, condenser tubes, catalyser tubes, etc. used in chemical and petroleum inudstries. however, it is not applicable to the steel tubes for heating furnace and steel heat exchager tubes for bes for low temperature service. |
Classes and Symbols of JIS G 3461 / JISG3461 seamless steel pipes
The tube shall be classified into 3 grades and their class symbols shall be
as given in Table 1
Chemical Composition
(Applicable till the end of 1990)
Grade | Mfg. Process | Chemical composition(%) | ||||
C | Si | Mn | PP | |||
STB35 | S, E | 0.18Max | 0.35Max | 0.30~0.60 | 0.035Max | 0.035Max |
STB42 | S, E | 0.32Max | 0.35Max | 0.30~0.60 | 0.035Max&l"center">0.035Max | 0.035Max |
STB52 | S, E | 0.25Max | 0.35Max | 1.00~1.50 | 0.035Max | 0.035Max |
Packing of JIS G 3461 / JISG3461 seamless steel pipes
Each bundles pipes will be bundle with 8 pcs steel strips, nesting package.
- Q: How are steel pipes protected against rusting?
- Corrosion protection is employed to safeguard steel pipes from rusting. Various methods are utilized for preventing the formation of rust on steel pipes, including the following: 1. Coatings: To create a barrier against rust, different coatings are applied to the surface of steel pipes. These coatings prevent oxygen and moisture from reaching the metal surface and initiating the rusting process. Options for coatings include epoxy, polyethylene, zinc, or a combination of these materials. 2. Galvanization: Steel pipes are immersed in a molten zinc bath to undergo galvanization. This process forms a protective layer of zinc on the surface of the pipes, acting as a sacrificial barrier. If any small areas of the pipe surface are exposed, the zinc coating will corrode instead of the steel, providing continuous protection against rust. 3. Cathodic Protection: Electrical current is utilized to safeguard steel pipes in this method. By connecting the pipes to a sacrificial anode, usually made of zinc or magnesium, the anode will corrode instead of the steel pipes when exposed to moisture and oxygen. This method is commonly employed in underground or underwater applications. 4. VCI (Vapor Corrosion Inhibitor) Technology: Chemical compounds are used in VCI technology to release a vapor that protects steel pipes from rusting. These compounds form a thin layer on the surface of the pipes, inhibiting the corrosion process by neutralizing oxygen and moisture. 5. Regular Maintenance: Aside from the aforementioned methods, regular inspection and maintenance play a crucial role in preventing rust formation on steel pipes. This involves cleaning the pipes, removing any accumulated debris or corrosive substances, and repairing any damaged coatings or protective layers. In summary, these corrosion protection methods effectively ensure the longevity and durability of steel pipes in various industrial, commercial, and residential applications by safeguarding them against rusting.
- Q: What is the difference between hot-rolled and cold-rolled steel pipes?
- Hot-rolled steel pipes are produced at high temperatures and have a rougher surface finish. They are known for their flexibility and are often used in applications that require bending or shaping. On the other hand, cold-rolled steel pipes are produced at lower temperatures and undergo additional processing to achieve a smoother surface finish. They are generally stronger and more precise in dimensions, making them suitable for applications that require high precision and strength.
- Q: Are steel pipes suitable for wastewater treatment plants?
- Yes, steel pipes are suitable for wastewater treatment plants. Steel pipes are known for their durability, corrosion resistance, and high strength, making them ideal for handling the demanding conditions of wastewater treatment plants. They can effectively transport and contain wastewater without any structural or functional issues, ensuring efficient and reliable operation of the treatment process.
- Q: What are the uses of welded steel pipes?
- Ordinary carbon steel wire bushings (GB3640-88) are industrial and civil construction, installation of machinery, equipment and other electrical installation works for the protection of electric wire.
- Q: How do steel pipes perform in earthquake-prone regions?
- Steel pipes perform well in earthquake-prone regions due to their inherent strength and flexibility. They can withstand the strong seismic forces, thanks to their high tensile strength and ductility. Steel pipes have the ability to absorb and dissipate energy during an earthquake, reducing the chances of structural failure. Additionally, their durability and resistance to corrosion make them suitable for long-term use in such regions.
- Q: How are steel pipes protected during transportation?
- Steel pipes are protected during transportation through a variety of measures to ensure their safety and integrity. One common method is the use of protective coatings on the exterior of the pipes. These coatings, such as epoxy or polyethylene, serve as a barrier against external factors like moisture, corrosion, and physical damage. Additionally, the pipes are often bundled together and secured with strapping or bands to prevent movement and potential collisions during transit. In some cases, pipes may also be placed within wooden crates or containers for added protection against impact and handling. Furthermore, careful loading and unloading procedures are followed to minimize any stress or strain on the pipes. By implementing these protective measures, steel pipes can safely reach their destination without compromising their quality or structural integrity.
- Q: How are steel pipes used in the manufacturing of fire sprinkler systems?
- Steel pipes are commonly used in the manufacturing of fire sprinkler systems due to their durability and resistance to high temperatures. These pipes are used to transport water or other fire suppressants from the water supply to the sprinkler heads. The steel pipes are able to withstand the pressure and heat generated during a fire, ensuring a reliable and effective fire suppression system.
- Q: What is lined pipe?
- Is the coating of the inside of the pipe, such as pipe conveying sulfuric acid will corrode, corrosion, but soft plastic pipe, buried in the ground to wall thicker, then you can use the liner and characteristics of hard for using steel pipe laying, sheathed in the steel pipe into the thin plastic tube, it can transport the sulfuric acid,
- Q: How are steel pipes used in HVAC systems?
- Steel pipes are commonly used in HVAC systems for transporting hot or cold water, as well as other fluids like refrigerants and condensate. They are durable, resistant to corrosion, and can withstand high pressure, making them ideal for carrying fluids throughout the system. Steel pipes are typically used for water supply lines, steam distribution, and hydronic heating and cooling systems in HVAC installations.
- Q: What are the different testing methods used for steel pipes?
- There are several testing methods used for steel pipes to ensure their quality and reliability. Some of the commonly used testing methods include: 1. Non-destructive Testing (NDT): NDT methods such as ultrasonic testing, magnetic particle inspection, and liquid penetrant testing are used to detect any surface or subsurface defects in the steel pipes without causing any damage to them. 2. Mechanical Testing: Mechanical testing involves conducting various tests to evaluate the mechanical properties of steel pipes, including tensile strength, yield strength, elongation, hardness, and impact resistance. These tests help determine the structural integrity and performance of the pipes. 3. Hydrostatic Testing: This method involves subjecting the steel pipes to high-pressure water to check their ability to withstand the expected operating conditions. Hydrostatic testing is performed by filling the pipes with water and pressurizing them to a predetermined level for a specified duration. Any leakage or deformation in the pipes is detected during this test. 4. Dimensional Inspection: This testing method ensures that the steel pipes meet the specified dimensional requirements. It involves measuring the diameter, wall thickness, length, and other critical dimensions of the pipes to verify compliance with the applicable standards or specifications. 5. Visual Inspection: Visual inspection is a basic method used to assess the external appearance of steel pipes. Trained inspectors visually examine the pipes for any surface defects, such as cracks, corrosion, or irregularities in shape or finish. 6. Chemical Analysis: Chemical analysis is performed to determine the composition and elemental content of the steel pipes. It helps ensure that the pipes are made from the correct grade of steel and meet the required chemical composition standards. 7. Metallographic Examination: Metallography involves examining the microstructure of steel pipes under a microscope to assess their quality and integrity. It helps identify any internal defects, such as grain boundaries, inclusions, or improper heat treatment, that may affect the overall performance of the pipes. By utilizing these testing methods, manufacturers and inspectors can ensure that steel pipes meet the necessary quality standards and are suitable for their intended applications.
We specializes in producing steel tube used the following criteria, in the pursuit of brand quality, while providing professional branding services: | 1. Professional production of ASME Series: T91, T23, T22, T12, T11, T2, etc., steel appearance, size and internal performance indicators comparable with the imported products and strive. | 2. A full range of professional production internally ribbed tube, especially supercritical internally ribbed tube. Finished internally threaded tube with threaded inspection by the root. | 3. A boiler tube free pretreatment process: steel pipe in the regular inspection process is completed.
1. Manufacturer Overview
| Location | Jiangsu, China |
| Year Established | 2005 |
| Annual Output Value | Above US$100 Million |
| Main Markets | Main land; Middle East; Southeast Asia |
| Company Certifications | ISO 9001:2008 |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Shanghai |
| Export Percentage | 61% - 70% |
| No.of Employees in Trade Department | 390People |
| Language Spoken: | English; Chinese |
| b) Factory Information | |
| Factory Size: | Above 600,000 square meters |
| No. of Production Lines | Above 10 |
| Contract Manufacturing | OEM not offered |
| Product Price Range | Average |
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JIS G3461(Carbon Steel Tubes For Boiler And Heat Exchanger)
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50mt m.t.
- Supply Capability:
- 5000 Tons Per Month m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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