Views: 0 Author: Site Editor Publish Time: 2025-05-19 Origin: Site
Plastic fittings—such as couplings, elbows, tees, and adapters—connect piping and tubing systems in water distribution, chemical processing, and HVAC applications. To maintain system reliability, fittings must undergo rigorous mechanical and sealing performance tests. Shijiazhuang Zhongshi Testing Machine Co., Ltd. supplies dedicated plastic fitting testing equipments engineered for accuracy and efficiency.
Essential Test Methods
Burst and Leakage Testing: Hydrostatic testers apply internal pressure until failure or leakage, measuring burst pressure and leak rate. Programmable ramp rates and dwell times enable compliance with ISO 1167 and ASTM D1599.
Pull-Out and Torque Tests: Adapters and threaded fittings are subjected to axial and torsional loads to assess joint integrity. Motorized fixtures measure pull‑out force and tightening torque limits.
Dimensional Verification: Laser scanning or contact probing checks critical dimensions—bevel angle, flange flatness, socket depth—to ensure proper fit and sealing.
Thermal Cycling: Environmental chambers expose assembled fittings to repeated temperature swings, uncovering stress-induced leaks and material fatigue.
Technical Specifications
Pressure Capacity: Up to 30 MPa, with ±0.1% control accuracy
Torque Range: 0.1 Nm to 200 Nm, resolution 0.01 Nm
Pull‑Out Force: Up to 20 kN, load cell accuracy ±0.5%
Temperature Range: –40 °C to 120 °C for cycling tests
Industry Use Cases
Plumbing and Waterworks: Certifying fittings for potable water, wastewater, and irrigation systems
Chemical Plants: Verifying corrosion‑resistant PVC, CPVC, and PP fittings under high chemical concentration
Heating, Ventilation, and Air Conditioning: Testing HVAC duct connectors and manifold fittings for leak‑free performance under thermal stress
Agricultural Irrigation: Ensuring durable fittings for micro‑irrigation and pivot systems in varied climate conditions
Customized Solutions
Shijiazhuang Zhongshi Testing Machine Co., Ltd. offers modular test cells that handle diverse fitting shapes and sizes. Our engineering team collaborates on fixture design, test sequence programming, and result analysis. We provide on‑site commissioning, operator certification, and preventive maintenance to keep production lines operating smoothly.