Buying Guide · 2026-01-03 · 8分钟
Hydrostatic Pressure Testing for Bamboo Winding Composite Pipe: Methods and Standards
Explains static hydrostatic testing, burst-pressure testing, and cyclic-pressure testing methods and acceptance criteria for bamboo winding pipe.
Hydrostatic testing is the core factory-acceptance step for bamboo winding composite pipe. This article explains static hydrostatic testing, burst-pressure testing, and cyclic-pressure testing methods and acceptance criteria.
Three pressure test types
| Test type | Pressure | Hold time | Pass criteria | Purpose |
|---|---|---|---|---|
| Static hydrostatic | 1.5×PN | 10 min | No leakage, no deformation | Factory acceptance |
| Burst pressure | Stepwise to failure | — | Burst ≥ 3×PN | Ultimate strength verification |
| Cyclic pressure | 0→1.5×PN cycles | 10,000 cycles | No leakage, no fatigue damage | Fatigue life verification |
DN600 PN1.0 MPa test example
| Test item | Result | Requirement | Judgment |
|---|---|---|---|
| Hydrostatic (1.5 MPa) | No leak, no deformation | No leak, no deformation | Pass |
| Burst pressure | 4.2 MPa | ≥3.0 MPa | Pass |
| 10,000 cycles | No leak | No leak | Pass |
| Residual deformation | 0.8% | <5% | Pass |
Equipment requirements
- Hydrostatic pump: range 0–10 MPa, accuracy ±1%.
- Pressure sensor: range 0–10 MPa, accuracy class 0.5.
- Timer: accuracy ±1 s.
- Safety: protective fencing required for burst tests.
- Water quality: clean water, temperature 15–25 °C.
Need hydrostatic testing for bamboo winding pipe? We can provide third-party pressure testing and factory inspection reports.
FAQ
What is the typical burst-to-working pressure ratio for bamboo winding pipe?
At least 3×. A DN600 PN1.0 pipe measured 4.2 MPa burst, giving a safety factor of 4.2.
How often should hydrostatic testing be done?
At least one pipe per batch (same specification and production shift). Type testing is done annually.
Is cyclic pressure testing mandatory?
Required for type testing. Factory acceptance normally covers only static hydrostatic testing. Major projects are advised to request cyclic pressure testing.