1 Subject content and scope of application
This standard stipulates dimension, shape, weight permissible variation, technical requirements, test method, test rules, packing, marking and certification of hot rolled round carbon steel bars for manufacturing screw nail, screw nut, screw bolt and rivet.
This standard is applicable to hot rolled round carbon steel bars for manufacturing screw nail, screw nut, screw bolt and rivet of cold upset forging or hot upset forging.
2 Normative references
GB 222 GB 222 chemolysis for steel uses sampling method and permit variation for finished product chemical composition
GB 223 Methods for chemical analysis of iron, steel and alloy
GB 228 Metallic materials-Tensile test
GB 233 Metallic materials-Upset forging test
GB 237 Metallic materials-Forging test
GB 2101 General requirements of acceptance, packaging, marking, and certification for section steel
GB 2975 Sampling stipulation for steels mechanics and technological performance test
GB 6397 Metallic materials--Test pieces for tensile testing
This standard stipulates dimension, shape, weight permissible variation, technical requirements, test method, test rules, packing, marking and certification of hot rolled round carbon steel bars for manufacturing screw nail, screw nut, screw bolt and rivet.
This standard is applicable to hot rolled round carbon steel bars for manufacturing screw nail, screw nut, screw bolt and rivet of cold upset forging or hot upset forging.
2 Normative references
GB 222 GB 222 chemolysis for steel uses sampling method and permit variation for finished product chemical composition
GB 223 Methods for chemical analysis of iron, steel and alloy
GB 228 Metallic materials-Tensile test
GB 233 Metallic materials-Upset forging test
GB 237 Metallic materials-Forging test
GB 2101 General requirements of acceptance, packaging, marking, and certification for section steel
GB 2975 Sampling stipulation for steels mechanics and technological performance test
GB 6397 Metallic materials--Test pieces for tensile testing
