ASTM A671 CC65 Pipe
ASTM A671 CC65 Pipe for High-Pressure Applications – Engineered for Low-Temperature Service & Critical Industrial Projects
Hebei Longma Group manufactures ASTM A671 CC65 Pipe using electric fusion welding technology, delivering reliable pressure vessel quality carbon steel pipe solutions for demanding industrial environments. Our factory covers an area of 230,000 square metres, with more than 20 years of manufacturing experience, an annual production capacity of over 1 million tons, and clients in more than 90 countries. Our cc65 grade pipes are available with outer diameters from 60.3mm to 2032mm (2”-80”), wall thickness from 4mm to 100mm and the quickest delivery time of 7 days for standard requirements.
What Makes CC65 Grade Stand Out in Pressure Piping Systems
The product is constructed using ASTM A516 Grade 65 pressure vessel grade carbon steel plate. This composition of material has tensile strength from 450 to 585 MPa and minimum yield strength is 240 MPa. It works well in high pressure situations.
The chemical composition is a balanced carbon-manganese-silicon structure, with a carbon content of up to 0.24%, manganese of 0.85-1.20%. This exact recipe gives maximum weldability and great grain refinement.
The technique of electric fusion welding provides for uniform quality of the weld along the whole length of the longitudinal seam. The production method has tight dimensional control, therefore these pipes are appropriate for big diameter applications where seamless pipes are not economical.
Technical Specifications & Performance Parameters of ASTM A671 CC65 Pipe
| Parameter | Specification |
|---|---|
| Standard | ASTM A671 |
| Grade | CC65 |
| Base Material | ASTM A516 Grade 65 |
| Outer Diameter | 60.3-2032mm (2"-80") |
| Wall Thickness | 4mm-100mm |
| Tensile Strength | 450-585 MPa (65-85 ksi) |
| Yield Strength | ≥240 MPa (35 ksi) |
| Manufacturing Method | Electric Fusion Welding (EFW) |
| Delivery Time | 7 days (standard specs) |
| Annual Capacity | Over 1,000,000 tons |
Low-Temperature Toughness for Critical Environments
Your projects may require pipes that maintain structural integrity in challenging temperature conditions. CC65 grade delivers reliable impact performance in cold service environments, making it suitable for cryogenic processing and Arctic offshore installations.
Charpy V-notch impact testing is performed at specified temperatures to confirm energy absorption capacity. This ensures your piping system won't experience brittle failure when exposed to sub-zero conditions during operation.
The material's grain structure and controlled chemistry work together to provide ductility even when thermal cycling occurs. This is particularly valuable in thermal power plant feedwater systems where temperature fluctuations are routine.
Industrial Applications Across Critical Sectors
Oil & Gas Midstream Processing: For liquefied gases and condensates requiring pressure confinement and low temperature capabilities. The ASTM A671 CC65 Pipe is resistant to seam reliability in these harsh circumstances.
Power Generation Facilities: The material’s pressure vessel history is beneficial for high-pressure steam lines and cooling water circuits. These pipes are used in feedwater systems that are constantly under heat stress, and they function well.
Petrochemical Processing: Refineries and chemical plants need process pipe materials that can withstand corrosive substances and yet maintain pressure integrity. CC65 mechanical characteristics fulfilll these two conditions.
Offshore Platform Systems: Piping for deep-water and Arctic platforms must withstand air corrosion and low-temperature impact. This pipe is a realistic option because of the quality of base material and criteria for weld testing.
Comprehensive Quality Assurance Protocol
Quality control starts with the procurement of raw materials from reputable Chinese steel mills such as Bao Steel, HBIS, and TISCO. All steel plates are verified before manufacture and the chemical and mechanical characteristics are checked to satisfy specifications.
Longitudinal weld seam is subjected to full length radiographic testing for internal discontinuities such as porosity or slag inclusions. This non-destructive test is required for pressure service applications.
Each pipe is hydrostatically tested to be able to bear 1.5 times the design pressure without leaking. Transverse tension and guided-bend tests show the weld zone attributes are consistent with base metal performance, which confirms the fusion point preserves the structural integrity.
Our documentation package includes Material Test Certificates with heat number traceability, chemical composition analysis, mechanical test results, NDT reports, and dimensional inspection records. Third-party inspection by BV, TUV, or Intertek can be arranged according to your project requirements.
Value-Added Services for Project Optimization
Beyond pipe manufacturing, we provide fabrication services including welding, perforating, and expansion processing. End treatments can be customized to meet your specific connection requirements, reducing on-site labor costs.
Anti-corrosion solutions extend service life in harsh environments. Options include hot-dip galvanizing for atmospheric protection, FBE coating for internal corrosion resistance, and 3LPE coating systems for buried pipeline applications.
Complete technical documentation supports smooth project approval and international procurement processes. We provide Inspection and Test Plans, Manufacturing Procedure Specifications, and quality records that meet engineering contractor standards.
Cost-Effective Alternative for Large Diameter Projects
When your project requires large diameter pipes with heavy wall thickness, the ASTM A671 CC65 Pipe offers significant cost advantages over seamless alternatives. The EFW manufacturing process allows production of sizes that would be prohibitively expensive in seamless form.
You receive the mechanical performance needed for pressure service without the premium pricing associated with hot-finished seamless pipe. This makes budget allocation more efficient while maintaining safety standards.
We can manufacture in a wide range of diameters, wall thicknesses and lengths. Custom specs may be created to suit your installation needs, minimising field adjustments and decreasing project delays.
FAQ
Q：Why is the product a good option for low temperature pressure service applications?
A: ASTM A671 CC65 is an electric-fusion-welded steel pipe made of pressure vessel grade carbon steel plate, usually ASTM A516 Grade 65. It is suited for applications requiring excellent toughness, low temperature service capabilities and stable pressure performance. CC65 delivers greater strength performance than lesser grades, consistent low-temperature toughness from pressure vessel grade steel, and suitability for large diameter applications via the EFW production method. CC65 is a realistic solution for clients in oil and gas, petrochemical, power generation and industrial sectors where safety, durability and cost management are equally critical.
Q: What quality guarantee can customers anticipate when buying products?
A: A qualified supplier should provide complete Material Test Certificates with heat number traceability, Chemical Composition Analysis, Mechanical Test results (tensile strength, yield strength and elongation), Hydrostatic Test Reports, Weld Inspection Records, Radiographic Testing or other required NDE, Dimensional Inspection Reports and Surface Inspection Records. Buyers may additionally ask for impact testing at certain temperatures, heat treatment records, Positive Material Identification and third party inspection by recognised international organisations such as BV, TUV or Intertek according on the project needs. A competent supplier will provide thorough quality documentation and full traceability from the raw material to the finished pipe.
Q：How can buyers select a trustworthy product supplier?
A：Evaluate suppliers in three key areas: manufacturing capability, quality control capability, and project support capability. Manufacturing capability includes proven experience producing CC65 EFW pipes, ability to manufacture required dimensions, and experience with pressure vessel grade steel. Quality control capability encompasses strict inspection of incoming steel plates, qualified welding procedures with experienced technical teams, complete NDT and laboratory testing capabilities, and full production traceability. Project support capability involves stable production capacity, reliable delivery schedules, quick response to technical requirements, and ability to provide customized inspection, coating, and documentation solutions. A dependable supplier helps customers minimize project risks and achieve smooth project execution.
Contact Us
Ready to discuss your ASTM A671 CC65 Pipe specifications? Our technical team is available to review your project requirements and provide customized solutions. Contact us at info@longma-group.com today.
