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Medium / Heavy Wall Tubes - Insultube Commercial
Low Voltage Tubes, Heat Shrink Tubes, Insultube

Insultube GMW and GHW are medium wall and heavy wall black tubing. GMW tubes are used for environmental protection of low voltage cable termination and insulating the connectors for low voltage straight through joints/splice rated upto 3.3KV. GHW tubes are used for mechanical protection and outer sealing of underground straight through cable joints / splice upto 36KV.

  • These tubes are manufactured from high quality cross inked polyolefin material.
  • Optional hot melt adhesive lining for complete environmental protection and insulation.
  • Excellent resistance to weathering, UV rays, chemical and solvents.
  • Maximum cut length available upto 1500 mm.for tube size uppto size 250mm.
  • Custom dimensions, thickness, length & colours available on request.
  • Conforms to IEC 60684-3-247 standard.
  • Meets IP 68 (Ingress Protection)
Heat Shrink, Heat Shrink Tubings, Insultube
Heat Shrinkable tubes, Heat Shrink Tubes, Insultube

Technical Qualification Report : QR 1013

GENERAL PROPERTIES OF PRODUCT :
  • Shrink ratio 3:1
  • Operating temperature ranges from -400C to +1100C
  • Chemical, copper corrosion and fungus resistance
  • Dielectric strength of 15KV/mm.
  • Meets RoHS Compliance
  • Meets IP 68 (Ingress Protection)
SPECIFICATIONS :

IEC, ASTM, AND MIL-SPEC

SELECTION CHART

All dimensions are in mm

  • Code
  • D Min (mm)
  • d Max (mm)
  • T±10 (mm)
  • GMW 10/3
  • 10
  • 3
  • 1.5
  • GMW 12/4
  • 12
  • 4
  • 1.8
  • GMW 19/6
  • 19
  • 6
  • 2.0
  • GMW 22/6*
  • 22
  • 6
  • 2.0
  • GMW 27/8
  • 27
  • 8
  • 2.5
  • GMW 30/8
  • 30
  • 8
  • 2.6
  • GMW 33/10
  • 33
  • 10
  • 2.6
  • GMW 40/12
  • 40
  • 12
  • 2.7
  • GMW 50/16
  • 50
  • 16
  • 2.7
  • GMW 70/22
  • 70
  • 22
  • 2.7
  • GMW 90/28
  • 90
  • 28
  • 3.0
  • GMW 105/30
  • 105
  • 30
  • 3.0
  • GMW 115/34
  • 115
  • 34
  • 3.2
  • GMW 130/36
  • 130
  • 36
  • 3.2
  • GMW 140/42
  • 140
  • 42
  • 3.2
  • GMW 160/50
  • 160
  • 50
  • 3.3
  • GMW 180/55
  • 180
  • 60
  • 3.3
  • GMW 200/70
  • 200
  • 70
  • 3.3
  • GMW 250/70*
  • 250
  • 70
  • 3.5
  • GMW 320/90*
  • 320
  • 90
  • 3.5
  • GMW 375/110*
  • 375
  • 110
  • 3.5
  • GMW 425/120*
  • 425
  • 120
  • 3.5
  • Code
  • D Min (mm)
  • d Max (mm)
  • T±10 (mm)
  • GMW 12/3
  • 12
  • 3
  • 2.4
  • GMW 19/6
  • 19
  • 6
  • 2.5
  • GMW 22/6
  • 22
  • 6
  • 2.5
  • GHW 30/8
  • 30
  • 8
  • 3.0
  • GHW 43/12
  • 43
  • 12
  • 4.0
  • GHW 51/16
  • 51
  • 16
  • 4.0
  • GHW 72/22
  • 72
  • 22
  • 4.0
  • GHW 85/25
  • 85
  • 25
  • 4.0
  • GHW 105/30
  • 105
  • 30
  • 4.0
  • GHW 120/36
  • 120
  • 36
  • 4.0
  • GHW 140/42
  • 140
  • 42
  • 4.2
  • GHW 160/50
  • 160
  • 50
  • 4.3
  • GHW 180/55
  • 180
  • 55
  • 4.3
  • GHW 200/60
  • 200
  • 60
  • 4.3
  • GHW 200/60
  • 200
  • 60
  • 4.3
  • GHW 250/70*
  • 250
  • 70
  • 4.3
  • GHW 320/90*
  • 320
  • 90
  • 4.5
  • GHW 375/110*
  • 375
  • 110
  • 4.5
  • GHW 425/120*
  • 425
  • 120
  • 4.5
TECHNICAL SPECIFICATION
Properties Value Standard
Physical    
Tensile Strength 12 N/mm2 (MPA)(min.) ASTM D638
Ultimate Elongation 350% (Min.) ASTM D638
Longitudinal Change -10% (Max.) ASTM D2671
Density 1.15 ± 0.2 gm/cm3 ASTM D792
Hardness 45 ± 10 Shore D ASTM D2240
Water Absorption 0.5 % (max.) ASTM D570
Thermal    
Accelerated Ageing (120oC for 500 Hrs) ASTM D2671
Tensile Strength 11 N/mm2 (Mpa) (min.) ASTM D 638
Low temperature Flexibility (-40oC for 4 Hrs.) No Cracking ASTM D2671
Heat Shock (250oC for 30 Min.) No Cracking or flowing ESI 09-11
Shrink Temperature 125oC IEC 216
Continuous Temperature limit -40oC to + 110oC IEC 216
Electrical    
Dielectric Strength 12 KV/mm. (Min.) ASTM D149
Volume Resistivity 1 x 1014 Ohm.cm(min.) ASTM D257
Dielectric Constant 5 (Max.) ASTM D150

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