Our ASTM A192 seamless carbon steel boiler tubes are crafted from high-purity carbon steel, engineered to withstand extreme thermal and pressure conditions. Their chemical composition adheres strictly to ASTM A192 standards:
Element
Content (%)
Carbon (C)
0.25-0.35%
Manganese (Mn)
0.60-0.90%
Phosphorus (P)
≤0.035%
Sulfur (S)
≤0.035%
3. Mechanical Properties
Property
Value
Tensile Strength
≥415 MPa
Yield Strength
≥250 MPa
Elongation
≥30%
Maximum Operating Temp
450℃(842℉)
3. Equivalent Materials & Standards
For global compatibility, our ASTM A192 tubes align with these international equivalents:
Standard
Material Grade
Region
ASTM A192
Seamless Carbon Steel
USA
DIN 17175
St35.8
Europe
JIS G3461
STB 35
Japan
GB 3087
20G
China
4. Processing Technology
Manufactured via a precision seamless process:
Hot Rolling: Solid billets are heated and pierced to form hollow shells, ensuring uniform wall thickness.
Cold Drawing: Optional cold finishing for tight dimensional tolerances (±0.5% on diameter).
Heat Treatment: Normalized and annealed to relieve internal stress, enhancing toughness.
Non-Destructive Testing: 100% ultrasonic inspection and hydrostatic testing (at 30% higher than working pressure) to guarantee integrity.
5. Application Scenarios
Ideal for high-temperature, high-pressure boiler systems in:
Power generation (thermal power plants, biomass boilers)
Heating systems (district heating, large-scale commercial boilers)
6. Product Advantages
Seamless Design: Eliminates weak points, reducing leak risks in high-pressure environments. High-Temp Resistance: Stable performance at up to 450°C, avoiding deformation under thermal stress. Cost-Effective: Carbon steel offers excellent strength-to-cost ratio for industrial applications. Global Compatibility: Complies with ASTM A192 and equivalents, easing international project approvals.
7. FAQ
Q1: Can these tubes be customized for specific lengths?
A: Yes, we offer cut-to-length services (1-12m) with precision end finishing (beveled, plain) per project requirements.
Q2: Are they suitable for corrosive boiler environments?
A: For mild corrosion, they perform well. For aggressive media (e.g., chloride-rich water), contact us for coated or alloy alternatives.
Q3: What certifications do you provide?
A: All tubes come with ASTM A192 certification, mill test reports (MTR), and optional ISO 9001/ASME stamps.
8. About Yuhong Holding Group Co., Ltd
With 20 years of expertise, Yuhong is a top 5 Chinese exporter of finned tubes, serving 80+ countries. Beyond finned tubes, we supply high-quality boiler tubes, heat exchanger tubes, and more. Our 55 production lines, 110+ skilled workers, and 20,000㎡ facility—equipped with advanced CNC machinery—ensure compliance with global standards (ASTM, DIN, JIS).
We prioritize on-time delivery, 24/7 technical support, and tailored solutions.
