螺栓材料A320Gr.L7介绍
国家假期ASTM A320
Scope麦哲伦
漂的读音Originally approved in 1948, the ASTM A320 specification covers alloy steel and stainless steel bolting materials for low temperature rvice. This standard covers rolled, forged, or strain hardened bars, bolts, screws, studs, and stud bolts ud for pressure vesls, valves, flanges, and fittings. Like the ASTM A193 specification, unless otherwi specified, the 8UN thread ries is specified on fastener larger than 1” in diameter.
Below is a basic summary of a few of the common grades within the ASTM A320 specification. A number of other less common grades of ASTM A320 exist, but not covered in the description below.
Grades
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Mechanical Properties
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