What is ASTM A671 GR CC60 material?
ASTM A671 GR CC60 is a grade of electrofusion welded (EFW) steel pipe manufactured according to the ASTM A671 standard, specifically designed for use in low-temperature and high-pressure environments.
Manufacturing Process
Electrofusion Welding (EFW): CC60 steel pipes are manufactured using an electrofusion welding process, where an electric current melts the edges of the steel plate to form a weld. This process ensures the quality and strength of the weld, resulting in uniform properties throughout the pipe.
Heat Treatment: To further optimize the mechanical properties and low-temperature toughness of CC60, the steel pipes may require heat treatment during manufacturing, such as normalizing and tempering.
Chemical Composition of A671 CC60 Pipes
| Specification | Steel grade | Chemical composition | Remarks | |||||
| C | Si | Mn | P | S | Ti | |||
| Pipes for pressure service ASTM A671 |
CC60/C60 | 0.21 | 0.13 ~0.45 |
0.55 ~0.98 |
0.035 | 0.035 | - | A671/ A672 |
Mechanical Properties of A671 CC60 Pipes
| Products | Steel Grade | BASE METAL MECHANICAL COMPOSITION | Welding point tensile strength (N/mm2) | Remarks | |||
| Yield point (N/mm2) | Tensile Stregth (N/mm2) | Test Pieces | Elongation (%) | ||||
| Pipes for pressure service ASTM A671, A672 | CC60/C60 | 220 | 415~550 | - | 25 | 415~550 | A671/ A672 |
A671 CC60 EFW Pipe Specification
| Type | ASTM A671 Gr. CC60/ CC65/ CC70 LSAW / SAW / EFW Pipe | |
| Executive Standard | API SPEC 5L,GB/T 9711.1,GB/T 9711.2,GB/T 9711.3,SY/T5037 | |
| ASTM A671 | Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures | |
| Class Designation | Class 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 34, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73. | |
| Size | Outer Diameter | 12-64 inch |
| Wall Thickness | 2-60mm SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS |
|
| Length | Single random length/Double random length 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual request | |
| Ends | Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc | |
| Surface Treatment | Bare,Painting black,varnished,galvanized,anti-corrosion PE PP/EP/FBE coating |
|
| Technical Methods | Hot-rolled/Cold-drawn/Hot-expanded | |
| Testing Methods | Eddy current testing, Hydrostatic testing or Ultrasonic examination, NDT and also with chemical and physical property inspection | |
| Packaging | Small pipes in bundles with strong steel strips,large pieces in loose; Covered with plastic woven bags; Suitable for lifting operation; Loaded in 40ft or 20ft container or in bulk Also according to customer's requests | |
| Application | Conveying oil, gas and water | |
| MOQ | 1 ton | |
| Production Capacity | 5000 T/M | |
| Delivery Time | Within 2 Weeks | |
ASTM A671 GR CC60 steel pipes are primarily used for fluid transport and storage in cryogenic environments.
Typical applications include:
- Liquefied Natural Gas (LNG) Transportation: Due to its cryogenic toughness, it is suitable for LNG pipelines operating at extremely low temperatures.
- Polar Oil and Gas Extraction: Meets the high requirements for pipeline materials in cold regions.
- Industrial Gas Storage and Transportation: Used for pipelines transporting cryogenic industrial gases such as liquid nitrogen and liquid oxygen.
