Carbon steel boiler tubes are steel tubes suitable for high-pressure boilers. They are made of carbon steel or alloy steel and are resistant to high temperature and high pressure environments.
- It is a thick-walled steel pipe with very good mechanical processing performance
- It has good corrosion resistance and can resist the erosion of various chemical media
- Seamless boiler tubes can maintain stable mechanical and chemical properties under high temperature environment and have excellent high temperature resistance
- It has high compressive strength and impact resistance and can withstand large pressure and impact loads
- Widely used in power facilities and power generation industry, seamless boiler tubes are key components of power generation equipment, and their performance directly affects power generation efficiency and safety.
- In the field of petrochemicals, they are mostly used to transport high-temperature and high-pressure oil and gas media, and their stability and reliability are very high.
- Seamless boiler tubes have good pressure resistance and corrosion resistance, and are an important component of aerospace, shipbuilding and other fields.
Carbon steel (SA-210 Gr. A1/A2, for low-medium pressure); Alloy steel (SA-213 T11/T22/T91, for high temp/pressure); Stainless steel (304/316, for corrosive environments)
Chemical Composition
Carbon steel: C ≤0.35%, Mn 0.7-1.3%; Alloy steel (T22): Cr 2.1-2.3%, Mo 0.9-1.1%; Stainless steel (304): Cr 18-20%, Ni 8-10.5% (key elements for heat/corrosion resistance)
Mechanical Properties
Tensile Strength: Carbon steel ≥415 MPa; Alloy steel (T91) ≥585 MPa; Stainless steel ≥515 MPa
Yield Strength: Carbon steel ≥255 MPa; Alloy steel (T91) ≥415 MPa; Stainless steel ≥205 MPa
Elongation: ≥30% (all types)
Heat & Corrosion Resistance
Carbon steel: ≤450°C, resists mild oxidation; Alloy steel (T91): up to 650°C, good creep resistance; Stainless steel: up to 800°C, excellent in corrosive steam/gases
Temperature Range
Service: -20°C to 800°C (varies by material); carbon steel limited above 450°C (oxidation risk); alloy/stainless steel for high-temp critical sections
Form & Dimensions
Type: Seamless (high pressure, superheaters); welded (lower pressure, water walls)
Outer Diameter: 10mm-219mm (common: 38mm, 51mm, 63.5mm); Wall Thickness: 2mm-20mm
Length: 3m-12m (custom cuts available)
Standards Compliance
ASTM (SA-178, SA-210, SA-213); ASME Section I (power boilers); DIN 17175 (European); JIS G3461 (Japanese industrial boilers)
Fabrication
Seamless: Hot-rolled/extruded (no welds, high pressure); Welded: ERW/TIG (cost-effective for non-critical areas)
Machinable (carbon/alloy steel easier than stainless); Formable by bending/flanging
Key Applications
Power plants: Superheaters, reheaters, water walls, economizers
Industrial boilers: Process heating in refineries, chemical plants
Marine: Shipboard steam systems (stainless/alloy for seawater resistance)
Waste heat recovery: Exhaust gas heat exchangers
Key Advantages
Carbon steel: Cost-effective for low-medium pressure; Alloy steel: High strength at extreme temps; Stainless steel: Resists corrosion in aggressive steam
Seamless design ensures reliability in high-pressure critical sections; Wide size range for diverse boiler types
Frequently Asked Questions
Q: What testing reports can you provide for the products?
A: We can provide reports such as pressure test, chemical composition analysis, and mechanical property test, as per your request.
Q: Do you have stock for standard-sized products?
A: Yes, we keep stock for most standard-sized pipes, flanges, and fittings to ensure quick delivery.
Q: How can we track the shipment after it's dispatched?
A: We'll provide a tracking number and logistics platform information once the shipment departs, so you can check the status in real time.
Q: Do you offer technical support for product installation or usage?
A: Yes, our technical team can provide installation guides, video tutorials, or even on-site support if needed.
