Changzhou Joyruns Steel Tube CO.,LTD
| Payment Terms | L/C, T/T |
| Supply Ability | 1000T/Month |
| Delivery Time | 30days |
| Packaging Details | Plastic packing,woodenbox packing |
| Standard | ASTM A179/SA179 |
| OD Size | 6mm to 114.3mm |
| Technique | Hot Rolled,Cold Rolled |
| Surface | Black painted, Oiling, Pickled, Varnish |
| Heat Treatment | Annealed or Normalized |
| Inspection | The third party is acceptable |
| Brand Name | JOYRUNS |
| Model Number | 6MM TO 140MM |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 1000T/Month |
| Delivery Time | 30days | Packaging Details | Plastic packing,woodenbox packing |
| Standard | ASTM A179/SA179 | OD Size | 6mm to 114.3mm |
| Technique | Hot Rolled,Cold Rolled | Surface | Black painted, Oiling, Pickled, Varnish |
| Heat Treatment | Annealed or Normalized | Inspection | The third party is acceptable |
| Brand Name | JOYRUNS | Model Number | 6MM TO 140MM |
| Certification | ISO9001 | Place of Origin | CHINA |
Product Specification for ASTM A179/SA179 Heat Exchanger Steel Tubes
ASTM A179/SA179 specifies the requirements for seamless cold-drawn low-carbon steel tubes used in heat exchangers, condensers, and similar heat-transfer equipment. These tubes are designed for optimal thermal efficiency, durability, and resistance to corrosion in high-temperature and high-pressure environments.
The chemical composition of ASTM A179/SA179 steel tubes ensures excellent weldability and mechanical performance. Key elements include:
| Element | Composition Range (%) |
|---|---|
| Carbon (C) | 0.06–0.18 |
| Manganese (Mn) | 0.27–0.63 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.035 |
| Iron (Fe) | Balance |
Note: The low carbon content enhances formability and reduces brittleness, while controlled manganese levels improve strength and hardenability
ASTM A179/SA179 tubes are subjected to rigorous cold-drawing and heat-treatment processes to achieve the following mechanical properties:
| Property | Requirement |
|---|---|
| Tensile Strength | ≥325 MPa (47,000 psi) |
| Yield Strength | ≥180 MPa (26,000 psi) |
| Elongation (in 50 mm) | ≥35% |
| Hardness | ≤72 HRB (Rockwell B) |
Key Notes:
The cold-drawn process ensures a smooth surface finish (critical for heat transfer efficiency)
Tubes are heat-treated to eliminate residual stresses and enhance dimensional stability.
Surface Finish: High surface smoothness to minimize fouling and maximize heat transfer efficiency.
Dimensions: Outer Diameter: 6mm to 140 mm (0.5 in to 5 in)
Wall Thickness: 1 mm to 25 mm (customizable per application).
Manufacturing Process: Seamless cold-drawn production to ensure uniform wall thickness and structural integrity.
ASTM A179/SA179 tubes are widely used in:
Heat Exchangers and Condensers: For efficient heat transfer in industrial and power generation systems.
Boiler Components: Including water walls, superheaters, and economizers in high-pressure boilers.
Oil and Gas Refining: Suitable for heat recovery systems and cooling units.
Chemical Processing: Resistant to corrosive fluids and high-temperature environments.
ASTM A179/A179M: Primary standard for material composition and mechanical properties.
ASME SA-179/SA-179M: Compliant with ASME Boiler and Pressure Vessel Code for high-pressure applications.
Quality Assurance: Tubes undergo non-destructive testing (NDT), hydrostatic testing, and dimensional inspections.
Tubes are coated with anti-rust oil and packed in wooden crates to prevent corrosion during transit.
Storage recommendations: Dry, ventilated environments to avoid moisture exposure.
Note: Custom specifications (e.g., special lengths, surface treatments) are available upon request. For detailed technical data, refer to ASTM A179/A179M standards or contact the manufacturer.
References
ASTM A179/A179M Standard Specification213.
ASME Boiler and Pressure Vessel Code13.
Manufacturer Technical Data Sheets56.
This document is for informational purposes only. Specifications may vary based on regional standards or customer requirements.
Company Details
Business Type:
Manufacturer,Agent,Exporter,Seller
Year Established:
2000
Total Annual:
10000000-20000000
Employee Number:
150~300
Ecer Certification：
Verified Supplier
Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufactur... Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufactur...
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