Astm a193 grade b7. astm a193 grade b7 is a standard specification for high tensile chromium molybdenum alloy steel bolting material for use in high temperature or high-pressure service and other special purpose applications. it covers material specification for bolting used in pressure vessel service, valves, flanges and fittings. astm a193 defines both si (metric) and inch-pound …
A193 b7 alloy steel round bar the asme a193 designation covers fasteners intended for use in pressure vessels, valves, flanges, and fittings. heat treated chromium-molybendum (aisi 4140) high-yield bolting steel for high pressure applications.
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Is : 53721975 3. material -the taper washers shall be made from any suitable low carbon steel. note-suitable low carbon steels are indicated in is : 15704961 ’ schedules for wrought steels for general englneer- ing purposes ‘. 4. grade- the taper washers shall conform to ‘ordinary’ grade specified in is : 5369-1975
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