EN
PP corrugated tube is made of polypropylene extrusion molding, mainly used in automotive wiring hardness, can also be used for machine tool, automation instrument, electrical motor, protect the cable wires from external, wear and tear.
PP Flame-retardant Conduit Tubing is a polypropylene corrugated conduit designed for cable protection in automotive, industrial automation, and new energy environments where flame retardancy and chemical resistance are required. With UL94-V0 certification verified by SGS, an operating range of -30°C to 135°C, and 19 standard sizes from ID Φ5.0 to Φ48.0 mm, this conduit covers a broad range of wire protection applications. ROHS and REACH compliance documentation is available for international procurement and supplier qualification.
For automotive interiors, EV high-voltage harnesses, PLC control cabinets, and motor control systems, UL94-V0 is a baseline safety requirement. PP Flame-retardant Conduit Tubing achieves this through self-extinguishing polypropylene that prevents continuous burning, with SGS third-party certification supporting supplier audit documentation. In EV harness and BMS cable protection projects, buyers who have encountered qualification delays caused by missing flame retardancy certification understand why verifying this parameter at the sourcing stage matters. If the project requires ROHS or REACH compliance, PP Flame-retardant Conduit Tubing supports both, enabling a single-supplier solution across multiple compliance markets.
UL94-V0 Flame Retardancy (SGS Certified): Self-extinguishing performance suited for automotive Tier 1 qualification, EV harness protection, and industrial safety-critical installations.
Wide Operating Temperature (-30°C to 135°C): Short-term peak resistance at 155°C for 240 hours supports engine compartment and outdoor installations. Izod impact strength 18/13.7 kg-cm/cm confirms low-temperature performance in cold-climate environments — a parameter that is easy to overlook but critical to verify before committing to a cold-region installation.
Flexible Corrugated Structure: Double-sided smooth interior allows routing through tight bends while protecting cables from abrasion. Falling ball impact resistance of 22 ft-lb covers vibration and installation stress conditions.
Chemical Resistance: Polypropylene resists oils, solvents, acids, and alkalis — suited for factory floor environments, CNC machine installations, and workshop equipment exposed to cutting fluids or cleaning agents.
Size Range and Customization: 19 standard sizes, ID Φ5.0 to Φ48.0 mm. Slit versions ease wire insertion during assembly; non-slit versions provide enclosed cable paths. Custom colors including black, orange, gray, white, red, blue, and yellow support color-coded harness routing.
PP Flame-retardant Conduit Tubing is used in automotive wire harness protection across interior, dashboard, body, and engine compartment zones. For EV high-voltage harnesses and BMS cable routing, the UL94-V0 rating and -30°C to 135°C operating range meet the safety and thermal requirements of EV platform sourcing specifications. Buyers moving from basic f6 wire loom solutions to EV harness applications will find that PP Flame-retardant Conduit Tubing provides the certification depth that EV component qualification requires. Optional low-odor grades with 5510 odor testing and TVOC compliance support automotive interior applications.
In CNC machining centers, industrial robot wiring, and PLC control cabinet installations, PP Flame-retardant Conduit Tubing provides protection from cutting fluids, routing flexibility through machine geometries, and resistance to servo motor vibration. Panel builders managing multiple cable types — including signal cables sometimes terminated with yellow heat shrink tubing at connection points — can use PP Flame-retardant Conduit Tubing as the outer routing layer for consistent flame retardancy across the cabinet.
PV junction boxes, EV charging stations, and outdoor electrical cabinets benefit from the chemical resistance and thermal stability of PP Flame-retardant Conduit Tubing. The 19-size range allows consistent product selection from small junction box wiring through larger inverter cable runs.
Parameter |
Test Method |
Value |
Unit |
Melt Flow Rate |
ASTM D1238 (230°C) |
2.0 |
g/10min |
Density |
ASTM D792 |
0.9 |
g/cm³ |
Yield Point Tensile Strength |
ASTM D638 |
265 |
kg/cm² |
Yield Point Elongation |
ASTM D638 |
8 |
% |
Bending Elastic Modulus |
ASTM D790 |
13100 |
kg/cm² |
Rockwell Hardness |
ASTM D785 |
81 |
R scale |
Heat Deflection Temperature |
ASTM D648 |
90 |
°C |
Izod Impact Strength |
ASTM D256 |
18 / 13.7 |
kg-cm/cm |
Falling Ball Impact Strength |
LCY |
22 |
ft-lb |
Shrinkage Ratio |
ASTM D955 |
1.4 |
% |
Spec |
ID (mm) |
OD (mm) |
Wall Thickness (mm) |
Min. Bend Radius (mm) |
Length (M/R) |
Φ5.0 |
4.8±0.2 |
7.2±0.2 |
1.1±0.2 |
5 |
500 |
Φ6.0 |
6.0±0.2 |
9.0±0.2 |
1.5±0.2 |
5 |
400 |
Φ7.0 |
7.0±0.3 |
10.0±0.3 |
1.5±0.2 |
10 |
200 |
Φ8.0 |
8.5±0.3 |
11.5±0.3 |
1.5±0.2 |
15 |
200 |
Φ10.0 |
10.0±0.3 |
13.0±0.3 |
1.5±0.2 |
20 |
200 |
Φ11.0 |
11.0±0.3 |
14.0±0.3 |
1.5±0.2 |
25 |
200 |
Φ12.0 |
12.0±0.3 |
15.8±0.3 |
1.6±0.2 |
30 |
200 |
Φ13.0 |
13.0±0.3 |
17.0±0.3 |
2.0±0.2 |
35 |
100 |
Φ14.3 |
14.3±0.3 |
18.5±0.3 |
2.0±0.2 |
40 |
100 |
Φ15.9 |
15.9±0.3 |
20.0±0.3 |
2.0±0.3 |
45 |
100 |
Φ17.0 |
17.0±0.5 |
21.2±0.5 |
2.1±0.3 |
45 |
100 |
Φ18.0 |
18.0±0.5 |
22.0±0.5 |
2.0±0.3 |
45 |
100 |
Φ21.0 |
21.0±0.5 |
25.0±0.5 |
2.2±0.3 |
50 |
100 |
Φ23.0 |
23.0±0.5 |
28.5±0.5 |
2.5±0.3 |
55 |
50 |
Φ25.0 |
25.0±0.5 |
30.0±0.5 |
3.0±0.3 |
55 |
50 |
Φ29.0 |
29.0±0.6 |
34.5±0.6 |
2.75±0.3 |
60 |
50 |
Φ36.0 |
36.0±0.6 |
42.5±0.6 |
3.25±0.3 |
70 |
25 |
Φ48.0 |
48.0±0.6 |
54.5±0.6 |
3.25±0.3 |
80 |
25 |
PP corrugated tube is made of polypropylene extrusion molding, mainly used in automotive wiring hardness, can also be used for machine tool, automation instrument, electrical motor, protect the cable wires from external, wear and tear.
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