1Bellows flexibility testeroverview

Suitable for flexible testing of plastic corrugated pipes for prestressed concrete bridges.

IIBellows flexibility testerStandard basis:

Meet the requirements of the Ministry of Transport's "JT/T529-2004 Plastic Bellows for Prestressed Concrete Bridges" standard

IIITechnical parameters:

1. Specification of corrugated pipe: Φ50mm、 Φ60mm、 Φ75mm、 Φ90mm、 Φ100mm、 Φ115mm、 Φ130mm.

2. Test piece length:1100mm.

3. Bending radius:1500mmand1800mm.

4. Adjustment range of spacing between bending support mechanisms:R1500The specifications are50-100mm，R1800The specifications are100-150mm.

5. Material: Stainless steel coated with iron.

6. Plug gauge specification: Φ50mm、 Φ60mm、 Φ75mm、 Φ90mm、 Φ100mm、 Φ115mm、 Φ130mm.

7. Length of plug gauge:1300mm

8. Weight:50kg

4instructions:

1. Take a long one1100mmThe sample is vertically fixed on the testing platform, and a suitable bending support plate is selected with an inner diameter of ≤90The selected curvature radius is1500mmThe support plate has an inner diameter greater than90The selected curvature radius is1800mmThe support plate.

2. On the upper part of the sample900mmSlowly bend the sample to the curved template position on both sides by hand within the specified range. Bend back and forth five times.

3. When the sample is bent to the final beam position, maintain the bent state2After minutes, select a specialized plug gauge for the flexibility of the corrugated pipe that is suitable for the diameter of the pipe, place it in the corrugated pipe, and observe whether the plug gauge can pass smoothly. If the specialized plug gauge can pass smoothly, the flexibility of the plastic corrugated pipe is qualified. On the contrary, it is not a qualified product.