15CrMoG
Chromium molybdenum alloy steel pipe designed for high-temperature and high-strength applications.
GB 5310 20G high pressure seamless boiler tubes are a type of steel tube designed for use in high-pressure and high-temperature environments.
20G data pdf free download20G is a type of high-quality carbon structural steel, commonly used in the production of boiler tubes and pressure vessels due to its excellent mechanical properties and heat resistance.
20G is the steel material of GB 5310- 2008. GB 5310- 2008 standard is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines.
GB 5310 is a Chinese standard that outlines the specifications for seamless steel tubes used in high-pressure boilers. The designation "20G" refers to the material grade of these tubes, indicating that they are made from 20G steel, a low-carbon steel known for its excellent heat transfer properties and high tensile strength.
20G High Pressure Boiler Pipe, GB5310 20G boiler steel pipe, 20G boiler steel pipe, 20G boiler pipe
| Chemical elements | Data |
|---|---|
| Carbon | 0.17-0.23 |
| Silicon | 0.17-0.37 |
| Manganese | 0.35-0.65 |
| Phosphorus(max) | 0.03 |
| Sulfur(max) | 0.03 |
| Chromium(max) | 0.25 |
| Molybdenum(max) | 0.15 |
| Cuprum(max) | 0.2 |
| Nickel(max) | 0.25 |
| Vanadium(max) | 0.08 |
| Properties | Data |
|---|---|
| Yield Strength (Mpa) | 410-550 |
| Tensile Strength (Mpa) | 245 |
| Elongation (%) | 22 |
| W.T.(S) | Tolerance of W.T. | |
|---|---|---|
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| 83*13 | 127*10 | 168*20 | 245*27 |
| 83*14 | 127*17 | 168*32 | 245*32 |
| 89*16 | 133*16 | 180*21 | 273*27 |
| 95*9.2 | 133*16 | 180*22 | 273*30 |
| 95*10 | 133*22 | 180*25 | 273*36 |
| 95*15 | 140*18 | 180*40 | 299*30 |
| 102*14 | 146*14 | 194*21 | 325*30 |
| 114*9.2 | 152*17 | 203*26 | 377*35 |
| 114*10 | 159*16 | 219*22 | |
| 114*19 | 159*21 | 219*25 |
The 20G seamless steel pipe is mainly used for general boiler purposes, and can also be used for furnace tubes, heat exchanger tubes and seamless tubes for pipelines in petroleum refineries. As a professional boiler steel pipe supplier and manufacturer, besides the chemical composition and various mechanical properties, the 20G steel pipe we supply can also guarantee the water pressure, flattening, flaming tests as well as the surface quality and non-destructive inspection.
Annealed, Normalized, Normalized and Tempered
The steel tubes shall be delivered in a heat treated condition.
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
5800mm; 6000mm; 6096mm; 7315mm; 11800mm; 12000mm; and so on.
Max length: 16000mm, also U bending can be offered.
This inventory is part of the inventory, demand and other models in stock or order materials, please contact us.
20G seamless steel pipe is a long strip steel material with hollow cross-section and no circumferential welding seams, categorized as economical section steel. When bearing the same bending and torsional load as solid round steel, seamless 20G pipe features lighter weight, which greatly reduces material consumption for structural and pipeline projects.
Round seamless pipe accounts for most industrial applications: under the same perimeter, circular cross-section owns the maximum internal flow area to deliver more fluid medium; besides, round pipe bears uniform radial stress under internal and external pressure. It still has limitations — square and rectangular pipes provide better flat bending strength, so special-shaped steel tubes are produced for agricultural machinery frames and furniture structures.
20G seamless steel pipe is a universal base material matching our boiler anti-abrasion shields and half repair pipe sleeves, serving as the original substrate of power plant water wall, superheater and reheater heating tubes, as well as petrochemical fluid transmission pipelines and mechanical ring parts.
Manufactured from high-quality carbon structural steel, balanced chemical composition delivers stable tensile, yield and impact mechanical performance with reliable high-temperature toughness.
Adopt hot piercing & rolling seamless forming craft, eliminate welding seam defects; inner and outer pipe surfaces are smooth without oxide scale, dimensional tolerance is strictly controlled with high machining precision.
Outstanding high temperature resistance, high pressure bearing capacity and moderate corrosion resistance, stably operate under long-term industrial harsh flue and fluid medium environments.
Rich stock standard sizes, custom outer diameter, wall thickness and pipe length available per client engineering drawings and pipeline layout demands.
Suitable for thermal power boiler, petrochemical, aerospace, shipbuilding, fuel gas pipeline, cooler and heat exchanger equipment, covering fluid delivery and mechanical manufacturing industries.
The 20G seamless steel pipe boasts several characteristics that make it an indispensable component in industrial applications:
High Temperature Resistance: The 20G steel's composition allows the pipe to withstand elevated temperatures, making it suitable for applications involving heat transfer and energy conversion.
Seamless Design: The seamless manufacturing process ensures uniformity and eliminates the risk of weak points or leaks, enhancing the overall integrity of the pipe.
Efficient Heat Transfer: The properties of 20G steel facilitate efficient heat exchange, making the pipe ideal for transferring thermal energy between fluids.
Corrosion Resistance: The steel's composition provides inherent resistance to corrosion, extending the pipe's lifespan and reliability in various environments.
Enhanced Efficiency: The exceptional heat transfer properties of 20G steel contribute to efficient energy conversion, ensuring optimal performance in boilers and heat exchangers.
Reliability: The seamless design and high tensile strength of 20G steel pipes enhance their reliability and safety in demanding industrial environments.
Long Service Life: The corrosion-resistant nature of 20G steel extends the service life of the pipes, reducing maintenance requirements and downtime.
The versatile nature of 20G seamless steel pipes makes them suitable for a range of industrial applications:
Boilers: In the power generation sector, 20G pipes are used as superheater tubes, reheater tubes, and waterwall tubes in boilers, facilitating the exchange of heat and steam generation.
Heat Exchangers: These pipes play a crucial role in heat exchangers, where they enable efficient transfer of thermal energy between fluids in different industrial processes.
Petroleum Industry: The pipes find application in petroleum refineries for transporting high-temperature and high-pressure fluids.
When incorporating 20G seamless steel pipes into industrial systems, the following factors should be considered:
Operating Conditions: Ensure that the pipes are suitable for the specific temperature, pressure, and fluid characteristics of the application.
Compatibility: Verify compatibility with other components and materials within the system to prevent potential issues.
When comparing 20# and 20G seamless steel pipes, there are several differences to consider.
20# seamless steel pipes are used for structural pipes, fluid pipes, and low to medium pressure boiler pipes. On the other hand, 20G seamless steel pipes are specifically designed for high-pressure boiler tubes. Besides similar carbon content, 20G seamless steel pipes contain additional trace elements, making them more suitable for use in boilers and pressure vessels. They are widely utilized as pipelines for transporting fluids like oil, natural gas, water, and certain solid materials.
20# seamless pipes have slightly higher strength compared to No. 15 steel and are rarely quenched, thus avoiding temper brittleness. They exhibit high plasticity during cold deformation, making them suitable for bending, calendering, flanging, and hammer arch processing. Their welding performance with arc and contact welding is good, but gas welding may result in cracks on workpieces with strict shape requirements or complex shapes. Cold-drawn or normalized pipes have better machinability than annealed pipes.
20G seamless steel pipes have strict requirements on the steel grades used in their manufacture. They must have high lasting strength, excellent oxidation corrosion resistance, and good organizational stability.
Due to differences in manufacturing processes and composition, 20G seamless steel pipes are priced higher than 20# seamless steel pipes.
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
