Product Introduction

Reverse bending testing machine for steel barsmanufacturer

GB/T 1499.2-2018 is revised non equivalently using ISO 6935-2:2015 "Steel for reinforced concrete - Part 2: Ribbed bars". Compared with GB/T 1499.2-2007, the main changes include:
The regulations on smelting methods have been added, which stipulate that steel should be smelted using a converter or electric arc furnace, and if necessary, refining outside the furnace can be used;
Cancelled 335MPa grade steel bars and added 600MPa grade steel bars, forming strength series grades of 400MPa, 500 MPa, and 600 MPa;
Tighten the allowable length deviation and bending degree appropriately;
The allowable weight deviation has been appropriately tightened, and it has been clarified that weight deviation cannot be retested;
Added provisions for metallographic structure inspection and supporting macroscopic metallographic, cross-sectional Vickers hardness, and microscopic structure inspection methods;
At the same time, the regulations for surface markings were modified. The overall level of the revised standard has reached a certain level. The adjustment of strength grades will have a positive promoting effect on the promotion and application of high-strength steel bars, as well as on energy conservation and emission reduction; The adjustment of smelting methods provides technical support for cracking down on and banning strip steel; Increasing the requirements for metallographic structure inspection and its supporting inspection methods as the basis for determining hot-rolled steel bars and water penetrating steel bars can effectively avoid using water penetrating steel bars to counterfeit hot-rolled steel bars; Strengthening the regulations on size and weight deviations and clarifying that weight deviations are not allowed to be retested provide important guarantees for further improving product quality.
After the implementation of this standard, it will have a positive impact on improving the quality of hot-rolled ribbed steel products in China, promoting energy conservation and emission reduction, eliminating outdated production capacity, and better meeting the demand for hot-rolled ribbed steel in fields such as housing construction, bridges, railways, and highways.

Reverse bending testing machine for steel barsmanufacturer

Technical specifications:

Compliant with standards:

GB/T232-2010 "Bending Test Method for Metallic Materials"

GB1499.2-2007 "Steel for reinforced concrete - Part 2: Hot rolled ribbed steel bars"

GB1499.2-2018 "Steel for reinforced concrete - Part 2: Hot rolled ribbed steel bars"

GB/T28900-2012 "Test Methods for Steel Materials for Reinforced Concrete"

Product Technical Parameters

1. Maximum thrust: 300kN;

2. Work schedule: 300mm;

3. Maximum working pressure: 25Mpa;

4. Bending angle range: 0-180 °;

5. Bending circular specimen diameter: Φ 6- Φ 50mm;

6. Bending head diameter: Φ 6- Φ 200mm;

7. Maximum spacing between support rollers: 300 mm;

8. Oil cylinder loading speed: about 120mm/min;

9. Host dimensions: 1200 mm × 550 mm × 2000 mm

10. Overall power: 1.1kW;

11. Host weight: approximately 1100 kg;