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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)
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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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