300kN Ribbed Steel Relaxation Testing Machine
Maximum Test Force: 1-300kN
- Description
The GS-series relaxation testing machine is mainly used to test the tensile stress relaxation properties of prestressed steel wires, ribbed steel bars, PC steel rods and steel strands, and rebars at room temperature. It is suitable for highway bridges, construction projects, metrological quality inspection, and scientific research. Laboratory, metallurgical, steel and other related industries conduct testing and testing of materials.
Our Products
FAQ
1.What about the production time?
The production time varies for different products. If the product is in stock, the delivery time is within 5 days. For standard products that are not in stock, the production time is 15 days. The more customization a product requires, the longer the production time, with a maximum of 3 months.
2.Can you provide the related documents?
Of course. Regarding certificates, we can provide ISO, CE, and other certificates as needed, or any other documents you require, and we can provide them promptly. As for the product manuals, you can download them from the corresponding section on our website, or you can leave us a message or contact us through WhatsApp, Facebook, LinkedIn, etc.
3.Can you guarantee safe and secure shipping of products?
Our products always use safe and high quality export packing. We use high-quality wood packaging, and we also have long-term partnerships with freight shipping companies. Of course, you are welcome to specify your preferred shipping company.
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Features
Draw the relationship curve between remaining test force and time, and the change curve between temperature and time in real time;
The stress relaxation performance of the specimen for 1000 hours can be calculated. The calculation method has double logarithmic and single logarithmic options. The calculated data has all data and data options corresponding to characteristic time points;
With arbitrary setting of loading rate;
It has constant load and constant displacement control functions;
It can automatically calculate the stress relaxation properties of the test piece (such as stress relaxation rate, relaxation stress, relaxation rate, etc.) and print out a complete test report and test curve;
It can realize digital calibration of load quickly and accurately, and has overload protection function.
- Tension
- Compression
- Bending
- Shear
- Metals
- Non-metals
- Composite materials
- ASTM D638
- ASTM D1708
- ASTM D412
- ASTM D1876
- ASTM D695
- ASTM D751
- ASTM D882
- ASTM D3330
- ASTM F88
- ISO 37
- ISO 527
- ISO 13934
Specifications
| Model | GS-300 | GS-500/600 |
|---|---|---|
| Maximum test force | 300kN | 500/600kN |
| Force measurement range | 1%～100%FS (full scale) | |
| Test force indication accuracy | Better than ±1% (up to ±0.5%) | |
| Force resolution | ±500000 codes, no binning, constant resolution | |
| Deformation measurement error | ±1% | |
| Deformation range | 0.2～100%FS | |
| Deformation measurement resolution | 0.001mm | |
| Gauge length of relaxation deformation | 1200mm | 1400mm |
| Steel strand gauge length | 60× nominal diameter of strand, 200× nominal diameter of steel wire | |
| Relax screw travel | 0～200mm | |
| Screw movement adjustment speed | 0.001～50 mm/min | |
| Effective test space | 2000mm | |
| Stress relaxation test procedure | Full digital closed loop, automatic loading, holding, recording at constant speed | |
| Nominal diameter of steel strand (mm) | ￠9.50 / ￠11.10 / ￠12.70 / ￠15.24 | ￠15.24 / ￠18.00 / ￠21.80 |
| Stress relaxation test extension | Prestressed steel wires, steel bars, and metallic material relaxation tests | |
| Load frame type | Horizontal four-column, high rigidity and stability, vibration-free | |
| Voltage | 380V ±10%, 50Hz (must be grounded) | |
