4 Inch ASTM A672 Welded Steel Pipes Characteristics
4 Inch ASTM A672 pipe is Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures.
Low-temperature services serve at -45F°F (-45°C) Excellent strength and ductility
Better weldability and greater toughness
Higher strength with low coefficients of thermal
Conductivity than alloy steels
4 Inch ASTM A672 welded steel pipes heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. An analysis of each mill heat of plate material shall be made, also, an analysis of the finished deposited weld material from each 500 ft or fraction thereof shall be made. The mechanical test requirements includes one tension test specimen to represent each lot of finished pipe, and one transverse-guided-weld-bend test (two specimens) to represent each lot of finished pipe. Also, radiographic examination shall be made on the full length of each weld.
This specification nominally covers 4 Inch ASTM A672 welded steel pipes 16 in. [400 mm] in outside diameter or larger with wall thicknesses up to 3 in. [75 mm], inclusive. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.
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