China Plastic Fitting Testing Equipments Factory

Plastic Fitting Testing Equipments

Plastic fittings—elbows, tees, couplings, and transitions—are essential components in fluid conveyance systems. Testing these items for pressure resistance, dimensional accuracy, and long-term performance is critical to system safety. Shijiazhuang Zhongshi Testing Machine Co., Ltd. delivers dedicated test systems to validate plastic fittings in conformity with ISO, EN, ASTM, and GB standards.

Key Test Functions

• Pressure Endurance Testing: Hydrostatic testers subject fittings to static and cyclic internal pressures up to 25 MPa, monitoring for burst failures and leakage. Programmable ramp-hold cycles simulate field conditions over thousands of cycles.

• Dimensional Verification: Laser micrometers and contact probes measure outside diameter, wall thickness, ovality, and socket depth to ±0.01 mm accuracy. Automated rotary tables inspect fittings around the circumference.

• Pull-Out and Socket Retention: Assess the force required to extract pipe from socket fittings under ambient and elevated temperature conditions, ensuring reliable joints in assembly.

• Creep and Relaxation: Long-term testing under sustained pressure and temperature to quantify deformation and residual strength reduction over service life.

• Chemical Compatibility: Immersion chambers test fittings against fuels, acids, and alkalis, with post-test mechanical evaluation to detect embrittlement or swelling.

Technical Specifications

• Pressure Capacity: Up to 25 MPa, with ±0.05% control accuracy

• Dimensional Gauge Range: 10 mm–200 mm fittings, multi-axis measurement

• Temperature Range: Ambient to 95 °C for thermal aging and chemical tests

• Data Logging: Multi-channel recording of pressure, displacement, temperature, and fluid conductivity

• User Environment: Touchscreen HMI, recipe management, automatic safety interlocks

Typical Applications

• Water Supply Networks: Ensuring potable-water fittings meet leak-tightness and load-bearing requirements

• Gas Distribution: Verifying tight joints in PE- and PP-based pipeline components

• Industrial Piping: Certifying chemical-resistant fittings for process installations

• Irrigation Systems: Testing drip, sprinkler, and manifold fittings under pressure fluctuations and UV exposure

Shijiazhuang Zhongshi Testing Machine Co., Ltd. offers consultation on test method selection, onsite commissioning, and lifecycle support—including calibration and software updates—to keep fitting testing protocols precise and up to date.