Astm a193 grade b7 bolts and threaded studs are manufactured from a chromium-molybdenum steel and are quenched and tempered (heat treated) to develop the desired mechanical properties (strength). grade b7 is the most common grade of a193 bolts used in construction. b7 threaded studs and short, headed bolts are readily available in the marketplace.
Apr 23, 2019 · astm a320 l7 stud bolt manufacturer,astm a320 l7m stud bolt with two nuts ,asme b18.2.1 thread surface:black,galvanized,hdg,blue. ptfe xylan 1070 coated stud bolt pipe fittings,flange,piping material manufacturer
Astm a193 b7 is a bolting specification for medium-high temperature applications. it is a heat treated chromium molybdenum steel and is considered for applications up to 450° celsius (840° fahrenheit). astm a320 l7 has the same chemical and physical properties as b7, with additional charpy v notch tests taken at -101° celsius (-150° fahrenheit) for low temperature applications.
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