ASTM A691 1 1/4 CrCL22 Electric Fusion Welded pipe For High Pressure Service At High Temperatures
ASTM A691 1 1/4 CrCL22 Electric-Fusion-Welded For High-Pressure Service At High Temperatures
Material and Specification
ASTM A691 1 1/4 CrCL22 is an electric-fusion-welded steel pipe designed for high-pressure service at high temperatures. It is commonly used in industries such as oil and gas, petrochemical, and power generation. This specification covers pipes with a nominal wall thickness ranging from 1/8 inch to 3 inches (3.2mm to 76.2mm) and a nominal diameter from 10 inches to 120 inches (254mm to 3048mm).
Key Features
- High-Pressure Service: ASTM A691 1 1/4 CrCL22 is specifically designed to withstand high-pressure environments, making it suitable for applications where the pipe will be subjected to significant internal pressure.
- High-Temperature Resistance: The material exhibits excellent resistance to high temperatures, allowing it to maintain its structural integrity and mechanical properties even under extreme heat conditions.
- Electric-Fusion-Welded: The pipes are manufactured using the electric-fusion-welding process, which ensures a strong and reliable bond between the base metal and the weld metal. This results in a pipe with enhanced durability and resistance to cracking.
- Wide Range of Sizes: ASTM A691 1 1/4 CrCL22 pipes are available in various sizes, allowing for flexibility in design and installation.
Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 0.30-0.60 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.50-1.00 |
| Chromium (Cr) | 1.00-1.50 |
| Molybdenum (Mo) | 0.45-0.65 |
| Nickel (Ni) | 0.40 max |
| Copper (Cu) | 0.40 max |
Mechanical Properties (Table Presentation)
| Property | Value |
|---|---|
| Tensile Strength | 65 ksi (450 MPa) min |
| Yield Strength | 35 ksi (240 MPa) min |
| Elongation | 20% min |
| Hardness (HB) | 187 max |
| Impact Toughness | 27 J (20 ft-lbf) min at -50°C (-58°F) |
Steel Grade
ASTM A691 1 1/4 CrCL22 is a steel grade that falls under the ASTM A691 specification. It is categorized as a low-alloy steel with added chromium, molybdenum, and copper to enhance its mechanical properties and resistance to high temperatures.
Application
Due to its high-pressure and high-temperature capabilities, ASTM A691 1 1/4 CrCL22 is commonly used in various applications, including:
- Oil and Gas Industry: It is utilized in oil and gas refineries, pipelines, and offshore platforms where the pipes are exposed to harsh conditions and high-pressure environments.
- Petrochemical Industry: The material is suitable for applications involving the transportation of chemicals and gases at elevated temperatures and pressures.
- Power Generation: ASTM A691 1 1/4 CrCL22 is used in power plants for steam pipelines and other high-temperature applications.
Possible Alternative Grades
While ASTM A691 1 1/4 CrCL22 is a widely used material, there are alternative grades available that may be suitable for specific applications. Some possible alternative grades include:
- ASTM A335 P11: This grade is a seamless ferritic alloy steel pipe for high-temperature service. It offers similar high-temperature resistance and is commonly used in power plants and refineries.
- ASTM A387 Grade 11: This grade is a pressure vessel grade steel used in elevated temperature service. It provides excellent resistance to corrosion and high-temperature environments.
- ASTM A213 T11: This grade is a seamless ferritic and austenitic alloy steel boiler, superheater, and heat-exchanger tube. It is suitable for high-temperature applications in various industries.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
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