ASME SA-556M C2 Seamless Cold-Drawn Tubes | High-Pressure Feedwater Heater Tubes
High-Performance Tubes for 300MW, 600MW & Larger Power Station Feedwater Heaters. Compliant with international standards, excellent for high-pressure applications, with an annual supply capacity of over 10,000 tons to meet your project needs.
Product Info
ASME SA-556M C2 Seamless Cold-Drawn Tubes | High-Pressure Feedwater Heater Tubes
ASME SA-556M C2 Seamless Cold-Drawn Tubes are made from a pearlitic carbon steel, specifically engineered for high-pressure service in tubular feedwater heater systems.The following is a detailed introduction to this type of product:
Product Overview
ASME SA-556M C2 Seamless Cold-Drawn Tubes are made from a pearlitic carbon steel, specifically engineered for high-pressure service in tubular feedwater heater systems. Manufactured in strict compliance with the ASME SA-556M standard, these tubes ensure reliable performance in high-temperature and high-pressure environments, playing a critical role in preheating water before it enters the boiler.
We supply both straight lengths and tubes that can be bent into "U" shapes as specified. They are widely used in industrial sectors such as power generation, petrochemical, and shipbuilding, especially in equipment and systems that must withstand demanding operational conditions.
Technical Specifications
Item | Specification |
Standard | ASME SA-556M Grade C2 |
Manufacture Process | Seamless & Cold-Drawn |
Outside Diameter | 12.7 mm - 38.1 mm |
Wall Thickness | 0.5 mm - 3.0 mm |
End Finishing | Plain End, Beveled End, Threaded |
Heat Treatment | Tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F [640°C] or higher to ensure ductility. Stress-relief anneal for U-bends (if specified) shall be within 1100 to 1200°F [585 to 640°C]. |
Surface Finish | Tubes are varnished on both ID and OD to prevent corrosion during transit. |
Wall thickness: 0.5mm-3.0mm | Outer diameter: 12.7 mm - 38.1 mm |
Key Features & Benefits
International Standard Compliance: Strictly conforms to ASME SA-556M (equivalent to ASTM A556/A556M), ensuring global quality recognition.
Superior Workability: The cold-drawn process followed by precise heat treatment ensures excellent ductility for easy rolling into tube sheets and meeting specified mechanical properties.
Proven High-Pressure Reliability: Designed specifically for high-pressure feedwater heater systems, guaranteeing structural integrity and operational safety.
Industry-Proven Application: The material of choice for high-pressure heaters in 300MW, 600MW, and larger power generation units in the Chinese market, with an annual demand of approximately 10,000 tons.
Flexible Supply Solutions: We offer a wide range of sizes, end treatments, and packaging options to meet your specific project requirements.
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 of ASME SA-556M C2
Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
SA-556M C2 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | 0 | 0 | 0 | 0 |
Mechanical properties of ASME SA-556M C2
Mechanical properties | Grade C2 |
Tensile strength, min, ksi [MPa] | 70 [480] |
Yield strength, min, ksi [MPa] | 40 [280] |
Elongation in 2 in. or 50 mm, min, % (longitudinal) | 30 |
Hardness | HR B 89 |
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
Strict Testing Chemical composition analysis: Ensure that the material composition meets the standard requirements. Mechanical performance testing: Including tensile testing, impact testing, etc., to ensure that the steel tube has sufficient strength and toughness. Non destructive testing: Using ultrasonic, eddy current, or radiographic testing techniques to detect internal defects in steel tubes. Hydraulic test: Each steel tube undergoes a hydraulic test to ensure good sealing and pressure bearing capacity in high-pressure environments. | Testing Standards Compliant with international standards such as GB3087, DIN17175, ASTM A53, ASTM A519, ASTM A106, ASTM A179, ASTM A192, 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. |
