Precision dual-notch preparation for pipe stress cracking tests
Overview
The Double Notch Machine delivers precise, simultaneous dual-notch cutting for preparing pipe specimens used in slow crack growth and stress cracking resistance testing. Engineered for consistency and repeatability, this system ensures specimen preparation meets the exacting requirements of polyethylene pipe testing standards.
Ideal for quality control laboratories, pipe manufacturers, and materials testing facilities.
Key Features
Precision Blade System
- Blade thickness: 0.23 ± 0.03 mm
- Cutting end angle: 14° ± 2°
Ultra-thin blades with controlled geometry produce clean, consistent notches critical for accurate stress cracking test results.
Adjustable Notch Depth Remaining specimen thickness is fully adjustable, allowing precise control of notch depth to meet specific test parameters and specimen requirements.
Versatile Clamping 1–25 mm clamping width adjustment accommodates a range of pipe wall thicknesses and specimen sizes.
High Cutting Accuracy ± 0.05 mm cutting accuracy ensures repeatable notch geometry across all specimens, eliminating variability in test results.
Compact Design At just 480 × 230 × 250 mm, this machine fits easily on laboratory benches without compromising workspace.
Standards Compliance
Designed for specimen preparation in accordance with:
- GB/T 18743.1 — Polyethylene pipes for water supply, Part 1
- GB/T 18743.2 — Polyethylene pipes for water supply, Part 2
- GB/T 21461.2 — Plastic pipes, resistance to slow crack growth, notched pipe test
Specifications
| Parameter | Value |
|---|---|
| Blade thickness | 0.23 ± 0.03 mm |
| Cutting end angle | 14° ± 2° |
| Remaining thickness | Adjustable |
| Clamping width range | 1–25 mm |
| Cutting accuracy | ± 0.05 mm |
| Dimensions (L × W × H) | 480 × 230 × 250 mm |
Applications
- Polyethylene pipe testing laboratories
- Slow crack growth resistance testing
- Stress cracking specimen preparation
- Pipe manufacturer quality assurance
- Third-party testing and certification