ASTM A179 Seamless Steel Tubes For Heat Exchangers & Condensers
Discover high-quality ASTM A179/ASME SA179 seamless cold-drawn low-carbon steel tubes for heat exchangers & condensers. Check chemical composition, mechanical properties, dimensions & get a quote.
Product Info
ASTM A179 / ASME SA179 Seamless Cold-Drawn Low-Carbon Steel Tubes
ASTM A179 is the standard specification for seamless cold-drawn low-carbon steel tubes, widely used in heat exchangers, condensers, and similar heat transfer equipment. The corresponding ASME standard is SA-179.
At Huagang Industrial, we supply high-precision ASTM A179 seamless tubes that deliver excellent thermal conductivity, superior corrosion resistance, and reliable performance in high-pressure and high-temperature environments. Their seamless, cold-drawn construction ensures a smooth internal surface, precise dimensions, and enhanced structural integrity without welded seams.
Key Features & Benefits of ASTM A179
Excellent Heat Transfer: Optimised for efficient thermal conductivity in heat exchange applications.
High Pressure & Temperature Resistance: Reliable performance under demanding operational conditions.
Superior Corrosion Resistance: Long service life in various industrial environments.
Seamless & Cold-Drawn: Enhanced strength, precise tolerances, and a smooth internal surface finish.
Easy Fabrication: Good weldability and formability for simplified installation and manufacturing.
Manufacturing Process & Heat Treatment
Our ASTM A179 tubes are manufactured as seamless cold-drawn products. After the final cold-drawing process, the tubes undergo a heat treatment at a minimum of 1200°F (650°C). This critical step relieves internal stresses, improves toughness, and enhances the material's resistance to corrosion.
Technical Specifications & Tolerances
Standard: ASTM A179 / ASME SA179
Type: Seamless, Cold-Drawn
OD Range: 1/8 inch (3.2 mm) to 3 inches (76.2 mm)
Wall Thickness: From 0.5 mm up to 14 mm (Common BWG gauges available)
Length: Standard lengths of 10ft, 20ft, 40ft, or custom lengths up to 27,000 mm. U-bent tubes are also available.
Standard Tolerances (Typical)
OD Tolerance: Varies with size; e.g., ±0.004" (±0.1mm) for tubes under 1" OD.
Wall Thickness Tolerance: +20% / -0% for tubes 1½" OD and under.
Applications of ASTM A179 Tubes
These tubes are essential components in industries requiring efficient and reliable heat transfer:
Power Generation: Boiler tubes, condensers in thermal and nuclear power plants.
Petrochemical & Chemical Processing: Heat exchangers and reactors.
Oil & Gas: Heat transfer equipment in refineries and offshore platforms.
HVAC Systems: Chillers and condensers.
Marine Industry: Shipboard heat exchangers and condensers.
Food and Beverage: Processing equipment requiring heat exchange.
Why Choose Huagang Industrial?
Wide Range: Comprehensive inventory of sizes and specifications.
Quality Assurance: Strict adherence to international standards with full traceability.
Expert Support: Technical assistance to help you select the right product for your application.
Competitive Pricing & Fast Delivery: Reliable supply chain for stock and made-to-order materials.
Packaging, Marking & Delivery
Packaging: Bundled (hexagonal), Wooden Boxes, Crates (steel/wooden), or as per customer requirements to prevent damage in ordinary handling and transportation.
Marking: Clearly marked with Standard, Steel Grade, Size, Heat No., and Lot No. for full traceability.
Port of Shipment: Shanghai, China
Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit)
Product Properties
Chemical Composition
The chemical composition of ASTM A179/ASME SA179 steel tubes ensures optimal performance for heat transfer applications.
Element | Composition (%) |
Carbon (C) | 0.06 - 0.18 |
Manganese (Mn) | 0.27 - 0.63 |
Phosphorus (P) | ≤ 0.035 |
Sulfur (S) | ≤ 0.035 |
Silicon (Si) | ≤ 0.25 |
Mechanical Properties
ASTM A179/ASME SA179 tubes meet stringent mechanical property requirements for strength and durability.
Property | Imperial | Metric |
Tensile Strength (min) | 47 ksi | 325 MPa |
Yield Strength (min) | 26 ksi | 180 MPa |
Elongation (min, in 2 inches/50mm) | 35% | 35% |
Hardness (max) | 72 HRB | 72 HRB |
Technological Advantages & Quality Control
Technological Advantages
With nearly two decades of expertise, Huagang is recognised as a top precision seamless steel tube manufacturer. We integrate R&D, production, quality management, logistics, and global customer service, enabling customers to secure stable supply and consistent product performance.
Our long-term partnerships with global brands demonstrate our capability to meet rigorous quality expectations.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes.
After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes. | After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved. |
Delivery Status:
Designation | Symbol | Description |
Cold drawn / hard | +C (BK) | After the last cold forming no heat treatment. |
Cold drawn / soft | +LC (BKW) | After the last heat treatment, follows the cold drawing there is a light finishing pass. |
Cold drawn and stress relieved annealed | +SR (BKS) | After the final cold drawing process, the tubes are stress-relieved and annealed in a controlled atmosphere. |
Annealed | +A (GBK) | After the last cold drawing process, the tubes are annealed in a controlled atmosphere. |
Normalized | +N (NBK) | After the last cold drawing process, the tubes are normalized in a controlled atmosphere. |
Quality Control
Check Each One Individually Hydraulic test: Each steel tube undergoes a hydraulic test to ensure good sealing and pressure bearing capacity in high-pressure environments. Non destructive testing: Using ultrasonic, eddy current, or magnetic flux leakage testing techniques to detect internal defects in steel tubes and ensure product quality. | Testing Standards Compliant with international standards such as GB/T 8163, GB/T 3087, GB/T 5310, DIN, JIS, EN, ASTM, etc. Each batch of products comes with detailed quality inspection reports and certificates of conformity. | Certification Guarantee Obtained ISO/TS16949:2009 quality system certification and obtained the national special equipment pressure pipeline component manufacturing license. |
