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About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
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Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
- Details
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Standard & Scope
ASTM A500 is a standard specification issued by ASTM International for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. Grade C is one of the strength grades under this standard, with a minimum tensile strength of 425 MPa and a minimum yield strength of 315 MPa( in round structural tubing). primarily used in structural applications such as buildings, bridges, and machinery.● ASTM A500 GR.C Steel Structural Tubing in Rounds and Shapes
Standard: ASTM A500Grade: GR.C
Outside diameter:20-660MM Wall Thickness: 1.3-16MM
Outside diameter:20*20-1200*1200MM Wall Thickness: 1.3-50MM
Outside diameter:20*20-1500*1500MM Wall Thickness: 1.2-50MM
The Wall Thickness Tolerance: control within the standard limits
Length: normally 5.8m, 6m, 12m or as your required
Manufacturing Process: Seamless or Welded
Surface Treatment: Bare Finish, Painting, Oiling, Galvanization......
Chemical Composition
The chemical composition of ASTM A500 Grade C is strictly controlled to ensure its mechanical properties and performance. The key elements and their maximum allowable percentages are as follows:Carbon (C): ≤ 0.23% for heat analysis, ≤ 0.27% for product analysis.
Manganese (Mn): ≤ 1.35% for heat analysis, ≤ 1.40% for product analysis.
Phosphorus (P): ≤ 0.035% for heat analysis, ≤ 0.045% for product analysis.
Sulfur (S): ≤ 0.035% for heat analysis, ≤ 0.045% for product analysis.
Copper (Cu): ≥ 0.20% for heat analysis, ≥ 0.18% for product analysis.
Mechanical Properties
ASTM A500 Grade C has the highest mechanical properties among the three main grades of ASTM A500. Its mechanical properties are as follows:Tensile Strength: ≥ 425 MPa.
Yield Strength:
≥ 315 MPa( in round structural tubing).
≥ 345 MPa( in shaped structural tubing).
Elongation: ≥ 21% (at a gauge length of 50 mm).Manufacturing Process
● Cold Forming Welding: The steel plate is rolled and welded into a tube through the electric resistance welding (ERW) process. Strict non-destructive testing (NDT) technology is used to ensure that the weld quality meets the standard requirements.
● Seamless Process: The steel billet is processed into a tube through hot rolling or cold drawing technology. This process can produce high-precision and high-strength tubes.
Applications
ASTM A500 Grade C is used in a variety of structural applications where high strength and reliability are required. These include:● Structural frameworks (e.g., buildings, stadiums).
● Mechanical components (e.g., frames, supports).
● Infrastructure projects (e.g., bridges, signposts).
Comparison To Other Grades
Grade A: Lower strength (≥45 ksi tensile, ≥33 ksi yield).Grade B: Intermediate (≥58 ksi tensile, ≥42 ksi yield).
Grade D: Higher yield strength (≥36 ksi) but specific to rectangular/square shapes.
Key Advantages
High Strength-to-Weight Ratio: Lighter than solid steel sections while maintaining strength.
Cost-Effective: Efficient material usage reduces costs.
Weldability & Formability: Suitable for fabrication and on-site modifications.
Conclusion
ASTM A500 Grade C is a versatile, high-strength structural steel tubing suitable for demanding applications. Its balanced mechanical properties, weldability, and availability in multiple shapes make it a preferred choice in construction and engineering. Compliance with ASTM A500 ensures reliability and performance in structural frameworks.
ASTM A500 GR.C Steel Structural Tubing in Rounds And Shapes
Subcategory
Keyword
- Details
-
Standard & Scope
ASTM A500 is a standard specification issued by ASTM International for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. Grade C is one of the strength grades under this standard, with a minimum tensile strength of 425 MPa and a minimum yield strength of 315 MPa( in round structural tubing). primarily used in structural applications such as buildings, bridges, and machinery.● ASTM A500 GR.C Steel Structural Tubing in Rounds and Shapes
Standard: ASTM A500Grade: GR.C
Outside diameter:20-660MM Wall Thickness: 1.3-16MM
Outside diameter:20*20-1200*1200MM Wall Thickness: 1.3-50MM
Outside diameter:20*20-1500*1500MM Wall Thickness: 1.2-50MM
The Wall Thickness Tolerance: control within the standard limits
Length: normally 5.8m, 6m, 12m or as your required
Manufacturing Process: Seamless or Welded
Surface Treatment: Bare Finish, Painting, Oiling, Galvanization......Chemical Composition
The chemical composition of ASTM A500 Grade C is strictly controlled to ensure its mechanical properties and performance. The key elements and their maximum allowable percentages are as follows:Carbon (C): ≤ 0.23% for heat analysis, ≤ 0.27% for product analysis.
Manganese (Mn): ≤ 1.35% for heat analysis, ≤ 1.40% for product analysis.
Phosphorus (P): ≤ 0.035% for heat analysis, ≤ 0.045% for product analysis.
Sulfur (S): ≤ 0.035% for heat analysis, ≤ 0.045% for product analysis.
Copper (Cu): ≥ 0.20% for heat analysis, ≥ 0.18% for product analysis.
Mechanical Properties
ASTM A500 Grade C has the highest mechanical properties among the three main grades of ASTM A500. Its mechanical properties are as follows:Tensile Strength: ≥ 425 MPa.
Yield Strength:
≥ 315 MPa( in round structural tubing).
≥ 345 MPa( in shaped structural tubing).
Elongation: ≥ 21% (at a gauge length of 50 mm).Manufacturing Process
● Cold Forming Welding: The steel plate is rolled and welded into a tube through the electric resistance welding (ERW) process. Strict non-destructive testing (NDT) technology is used to ensure that the weld quality meets the standard requirements.
● Seamless Process: The steel billet is processed into a tube through hot rolling or cold drawing technology. This process can produce high-precision and high-strength tubes.
Applications
ASTM A500 Grade C is used in a variety of structural applications where high strength and reliability are required. These include:● Structural frameworks (e.g., buildings, stadiums).
● Mechanical components (e.g., frames, supports).
● Infrastructure projects (e.g., bridges, signposts).
Comparison To Other Grades
Grade A: Lower strength (≥45 ksi tensile, ≥33 ksi yield).Grade B: Intermediate (≥58 ksi tensile, ≥42 ksi yield).
Grade D: Higher yield strength (≥36 ksi) but specific to rectangular/square shapes.
Key Advantages
High Strength-to-Weight Ratio: Lighter than solid steel sections while maintaining strength.
Cost-Effective: Efficient material usage reduces costs.
Weldability & Formability: Suitable for fabrication and on-site modifications.
Conclusion
ASTM A500 Grade C is a versatile, high-strength structural steel tubing suitable for demanding applications. Its balanced mechanical properties, weldability, and availability in multiple shapes make it a preferred choice in construction and engineering. Compliance with ASTM A500 ensures reliability and performance in structural frameworks.
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Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
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