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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.
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
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
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
Türkiye ASTM A500 GR.C Steel Structural Tubing in Rounds And Shapes
Product Description
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 A500
Grade: 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.
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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