
Saarang Polimex Pvt. Ltd. manufactures BIS-compliant PVC electrical conduits as per IS 9537 (Part 3):1983, ensuring rigid plain conduits of insulating materials for safe wiring protection in Indian residential, commercial, and industrial applications. These non-flame propagating conduits offer corrosion resistance, high mechanical strength, and smooth interiors for easy cable pulling. Available in standard 3-meter lengths, sizes from 20mm to 50mm OD, and three mechanical stress grades to match installation needs.
PVC conduits under IS 9537 Part 3 are classified by mechanical strength for light, medium, or heavy stress conditions, verified through impact, compression, and collapse tests. Manufacturers mark grade, size, and ISI certification on each length.
Nominal Size (mm). Light (LMS) Medium (MMS) Heavy (HMS)
Wall Thickness (mm) Wall Thickness (mm). Wall Thickness (mm)
20 1.0 1.5 2.0
25 1.0 1.5 2.0
32 1.2 1.8 2.4
40 1.4 2.0 2.7
50 1.6 2.2 3.0
Light Mechanical Stress (LMS): Ideal for concealed indoor wiring in homes and offices where minimal external impact occurs; cost-effective for low-risk surface or embedded installations.
Medium Mechanical Stress (MMS): Suited for general commercial buildings, exposed wiring, and moderate traffic areas like corridors; balances strength and flexibility.
Heavy Mechanical Stress (HMS): Recommended for industrial sites, outdoor/underground use, and high-impact zones like factories; offers superior crush resistance.
All grades feature flame-retardant, lead-free PVC for electrical insulation, moisture resistance, and no toxic emissions, meeting mandatory BIS ISI Mark requirements. Fittings and accessories available for complete systems; contact Saarang Polimex for quotes, dealer networks in Karnataka, or custom orders