GB/T 21839-2019 Active
GB/T 21839-2019 Test methods of steel for prestressing concrete
Abstract
This standard specifies the test methods for the tensile, bending, repeated bending, torsion, winding, and coating adhesion of steel used in prestressed concrete, as well as isothermal relaxation, axial fatigue, stress corrosion in thiocyanate solution, skew bending, chemical analysis, geometric dimension measurement, determination of relative rib area, determination of nominal mass deviation per meter, detection of anti-corrosion grease content, measurement of sheath thickness, coating uniformity, and zinc layer quality.
This standard is applicable to the determination of the relevant performance of products such as prestressed steel wires, prestressed steel rods, prestressed steel bars, and prestressed steel strands.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 21839-2019 |
| CCS | Wire, steel wire rope |
| ICS | Wire, steel wire rope, and link chains |
| Implement Date | 2020-05-01 |