ASTM A193 Standard and technical data
ASTM A193 covers alloy steel and stainless steel bolting for pressure vessels, valves, flanges and fittings for high-temperature or high-pressure service, or other special purpose applications.
Grade B7,B7M, B16 Stainless steel B8,B8M, are the most common grade and widely used for flange and valves connection.
You would find the gerneral induction for the chemical composition,mechanical property ,Heat treatment,testing requirement certificate for those materials according to ASTM A193 standard.
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