We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
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Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
When selecting Carbon Steel ERW (Electric Resistance Welded) pipes, it's important to consider various specifications to ensure they meet the specific needs of your application. Key specifications for carbon steel ERW pipes include.
1. Standard Specifications
API 5L: Sets requirements for line pipes used in the oil and gas industry, covering both seamless and welded pipes.
ASTM A53: Covers black and galvanized welded and seamless steel pipes for mechanical and pressure applications.
ASTM A500: Specifies cold-formed welded and seamless carbon steel tubing for structural purposes in round, square, and rectangular shapes.
2. Material Grades
Common grades for carbon steel ERW pipes include:
Grade A: Suitable for low-pressure applications.
Grade B: Provides higher strength and is widely used in oil and gas applications.
X42, X52, X60, X65: Higher-grade options offering enhanced mechanical properties for high-pressure pipelines.
3. Dimensions
Nominal Pipe Size (NPS): Typically ranges from 1/2 inch to 24 inches and larger, depending on the application.
Wall Thickness: Varies based on pressure requirements, commonly from schedule 10 to schedule 160 (e.g., Sch 40, Sch 80).
4. Mechanical Properties
Yield Strength: Ranges from 35,000 psi (Grade A) to 65,000 psi (Grade X65).
Tensile Strength: Typically ranges from 58,000 psi to 80,000 psi, depending on the grade.
Elongation: Varies based on thickness but typically ranges from 20% to 30%.
5. Chemical Composition
Carbon (C): Usually up to 0.26% for most grades.
Manganese (Mn): Typically ranges from 0.60% to 1.65%.
Phosphorus (P): Maximum of 0.04% for structural grades.
Sulfur (S): Maximum of 0.05%.
6. Coating Options
Galvanized: Hot-dipped for corrosion resistance.
Polyethylene or Epoxy: Used for additional protection in corrosive environments.
7. Testing and Inspection
Hydrostatic Testing: Ensures the pipe can withstand internal pressure.
Non-Destructive Testing (NDT): Methods such as ultrasonic testing or radiographic inspection assess weld integrity.
8. Applications
Carbon steel ERW pipes are commonly used for transporting fluids in oil and gas pipelines, as well as in construction and structural applications.
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