General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 26080-2010
Scope
This standard specifies the classification and code, order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules and signs, packaging and quality certificates of cold-formed rectangular tubes for tower crane structures. This standard applies to rectangular tubes for tower crane structural parts produced by cold-rolled or hot-rolled steel sheets and strips that can be cold-worked and deformed on continuous roll-type cold-bending units.
GB/T 26080-2010 Referenced Document
GB/T 1591 High strength low alloy structural steels*, 2018-05-14 Update
GB/T 20066 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel*, 2017-07-31 Update
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*, 2021-12-31 Update
GB/T 229 Metallic materials—Charpy pendulum impact test method*, 2020-09-29 Update
GB/T 232 Metallic materials - Bend test methods*, 2024-03-15 Update
GB/T 2975 Steel and steel products.Location and preparation of samples and test pieces for mechanical testing*, 2018-05-14 Update
GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials