ASTM A671 CL32 Welded Steel Pipe
ASTM A671 CL32 Welded Steel Pipe is produced by EFW or LSAW processing, fabricated from pressure vessel quality plate. The "CL32" designation refers to a specific class within this standard. This product is engineered for demanding industrial applications, particularly where low-temperature service is a critical factor
Specifications
Standard: ASTM A671/A671M.
Grade/Class: Typically grades such as CC60, CC65, or CC70, and specific classes like CL22, CL32. The class designation often relates to the heat treatment condition and the applicable temperature range for service.
Primary Application: Designed for high-pressure service at atmospheric and lower temperatures. Its primary use is in the transmission of oil and natural gas, as well as in pressure vessel applications.
Manufacturing Process: EFW or LSAW. commonly using the JCOE forming method. The welds are required to be double-welded, full-penetration welds. Manufacturing and welding procedures, along with personnel, must be qualified in accordance with Section IX of the ASME Boiler and Pressure Vessel Code.
Heat Treatment: Heat treatment is a mandatory requirement for most classes under ASTM A671. All classes except 10, 11, 12, and 13 must undergo furnace heat treatment. The furnace must be controlled to within ±15℃ and equipped with recording instrumentation to maintain a verifiable heating record. The specific heat treatment regimen for CL32 ensures the material's properties are suitable for its designated service conditions.
Material: Fabricated from pressure vessel quality carbon steel plate.
Typical Size Range: Outer diameters from 406mm to 1620mm . Wall thicknesses max to 65 mm. Length:6m, 12m
product Advantages
Low-Temperature Suitability: Specifically designed and treated to maintain toughness and structural integrity in low-temperature environments, making it ideal for cryogenic or cold-region pipelines.
High-Pressure Capability: Manufactured from quality plate with controlled welding and heat treatment, ensuring reliability under high internal pressures.
Controlled Quality: Adherence to ASTM A671/A671M and ASME codes ensures standardized material properties, dimensional accuracy, and weld integrity.
Versatility in Size: Available in a broad spectrum of large diameters and wall thicknesses, catering to major pipeline and structural projects
Surface Coating
To enhance durability in various environments, these pipes can be supplied with protective coatings.
Common options include Black painting, Fusion Bonded Epoxy (FBE), 3-layer Polyethylene (3PE), 3-layer Polypropylene (3PP) ..
quality control
ASTM A671 CL32 Welded steel pipe undergoes strict quality control per Standard:
* Hydrostatic Pressure Testing
* Non-Destructive Testing (X-Ray, Ultrasonic)
* Chemical composition test
* Mechanical Property Testing
* Impact test
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 provided)
shipment
