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The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. There are three grades A, B, and C* which denote tensile strength, configuration, and application. Refer to the Mechanical Properties Chart for the subtle strength differences within each grade.
A307 Grades
Grade A
A307
Headed bolts, threaded rods and bent bolts intended for general applications.
Grade B
A307
Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.
Grade C*
A307
Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended to project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. *As of August 2007, grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C, if required by the project.
- Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners
Astm A307 Carbon steel bolts and studs Application Industries
Sunflex Metal Industries are engaged in manufacturing of robust quality of Astm A307 Carbon steel bolts and studs. These Astm A307 Carbon steel bolts and studs are widely used in the following industries:
Mining Industries Transport Industries- Rail and Road Construction Industries / Building Systems Manufacturing Industries Agriculture Industries Energy Industries Water Industries Automotive Industries Ship Building Industries Nuclear Power Plant Paper & Pulp Industries Sugar Industries Engineering Cement Industries Petro-Chemical Industries Food Industries Oil & Gas Industries Chemical & Pharmaceutical Industries