ASTM A53 Grade B pipe

ASTM A53 is a commonly used steel pipe specification in the market. It is the American Society for Testing and Materials (ASTM) standard for steel pipes used in mechanical and pressure applications. 

The A53 specification covers seamless and welded steel pipes, and includes pipe sizes up to a certain diameter.
    
ASTM A53 Grade B is a type of carbon seamless steel pipes. The grade indicates that the steel has been manufactured to meet certain standards of mechanical properties, improved yield strength, chemical composition and corrosion resistance. 
Grade B is an often cost-effective alternative to F grades, which can sometimes be difficult to find.
    
Chemical composition of ASTM A53 Grade B pipe:
C: ≤0.3 Mn: ≤1.20 P: ≤0.05 S: ≤0.045 Ni: ≤0.4 Cr: ≤0.4 Cu: ≤0.4 Mo: ≤0.15 V: ≤0.08

ASTM A53 B mechanical strength is the same with ASTM A106 B steel pipe, Tensile strength maximum 415 Mpa, Yield strength maximum 240 Mpa.
Elongation: For A53 pipe there are 2 methods to calculate elongation.
Minimum bend radius is 3.2 inches (80 mm). 
    
A53 Grade B pipe may be galvanized for corrosion protection, making it suitable for outdoor use or in high water and salt environments. This can provide increased durability and resistance to rust and other environmental factors.
    
The grade B steel pipe features a black lacquer coating on the exterior and is available in hot-dipped galvanized or bare steel. These pipes can be cut and welded as desired, making them suitable for a variety of uses. Hot-dipped galvanizing should not be confused with pregalvanizing, which is typically a lower-grade product.

ASTM A53 Grade B pipes are used in many applications including power generation, oil and natural gas transmission, water and sewer systems, process piping, mining and construction. 

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