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CO-Extruded Tubing -INSULTUBE Premium


	GRMW and GRHW are Heat Shrink Co-extruded premium quality medium wall and heavy wall tubing. These tubes are used as waterproof sealing in cable termination and joints. It is used for corrosion protection, environmental sealing and mechanical protection of pipes and pipe connections. It is also used for insulating underground & aerial connections in CATV plant, CCTV connections and in control cables splicing joints. General Properties High shrink ratio. Co-extrusion technology. Soft & flexible. Fast & uniform shrinking. High resistant to decay, chemicals, copper corrosion & UV rays. Tubing with hot melt adhesive lining provides excellent waterproofing and environmental sealing. Standard color Black. Other colors available upon request. Customised dimension, thickness, length & colour available on request. Conforms to IEC 60684-3-247 standard. Also available in spool. Meets IP 68 (ingress Protection)

Technical Qualification Report : QR 1014

	SELECTION CHART
	All dimensions are in mm

code	D min (mm)	d max (mm)	T±10% (mm)
GRMW 12/3	12	3	1.5
GRMW 22/6	22	6	2.0
GRMW 27/8	27	8	2.5
GRMW 33/10	33	10	2.5
GRMW 40/12	40	12	2.5
GRMW 50/16	50	16	2.5
GRMW 63/19	63	19	2.5
GRMW 72/22	72	22	2.5
GRMW 92/27	92	27	3.0
GRMW 130/36	130	36	3.0

code	D min (mm)	d max (mm)	T±10% (mm)
GRHW 12/3	12	3	2.2
GRHW 22/6	22	6	2.5
GRHW 30/8	30	8	3.0
GRHW 43/12	43	12	4.0
GRHW 51/16	51	16	4.0
GRHW 72/22	72	22	4.0
GRHW 85/25	85	25	4.0
GRHW 105/30	105	30	4.0
GRHW 120/36	120	36	4.0
GRHW 140/42	140	42	4.2

D,d : Internal Diameter; s : as supplied; f; after free recovery; Ta, Tw: Thickness of Anode & Lead Wire End

TECHNICAL SPECIFICATION

PROPERTIES	VALUE	STANDARD
Physical
Tensile Strength	12 N/mm²(MPA)(min.)	ASTM D638
Ultimate Elongation	350% (Min.)	ASTM D638
Longitudinal Change	1.1%(Max)	ASTM D2671
Hardness	45 ± 10 Shore D	ASTM D2240
Water Absorption	0.2 % (max.)	ASTM D570
Thermal
Accelerated Ageing	(120^oC for 500 Hrs)	ASTM D2671
Tensile Strength	12 N/mm² (Mpa) (min.)	ASTM D 638
Ultimate Elongation	300 % (Min.)	ASTM D 638
Low temperature Flexibility -50^oC	No Cracking	ASTM D2671
Heat Shock (250^oC for 30 Min.)	No Cracking or flowing	ESI 09-11
Shrink Temperature	90^oC	IEC 216
Continuous Temperature Limit	-55⁰C to +100⁰C	IEC 216
Electrical
Dielectric Strength	25 KV/mm. (Min.)	ASTM D149
Volume Resistivity	1 x 10¹⁴ Ohm.cm(min.)	ASTM D257
Dielectric Constant	5 (Max.)	ASTM D150

Heat Shrinkable Tubes / Heat Shrink Sleeves

Low Voltage Tubes

	Low Voltage Commercial

	Low Voltage Premium

	U Bolt

	CATV

	Low Voltage Flame Retardant

Heat Shrinkable Joints & terminations	Cable Joints \| Cable Terminations \| Test Specifications \| 36 kV Cable Joints & Terminations 1.1 KV Cable Joints & Terminations \| Cablink
Heat Shrinkable Tubes	Advantages Of Heat Shrink Tubing \| Low Voltage Tubes \| Red Insulation Tubes \| Non Tracking Tube \| Busbar Tubes \| Thin Wall Tubes \| Semi Conductive Tubes \| Oil Barrier Sleeves \| Insultube \| Heat Shrink Sleeves
Heat Shrinkable Moulded Shapes	Cable End Caps \| Low Voltage Breakout \| Anti-Tracking Breakout \| Rain Sheds \| Right Angle Boot/Straight Boot \| Semi conductive Cable Breakout \| Anode Cap \| De Gassing End Cap
Switchgear Insulation Products	Busbar Tubes \| Busbar Insulating Shrouds \| Busbar End Caps \| Bushing Boot/Bellows \| PVC Terminal Cap \| Terminal Insulation Cover \| High Voltage Insulation Sheets \| Heat Shrink Tape \| Bustube \| Busboot \| Bus Bar End Caps \| Protection Shroud \| Protection Cover
Heat Shrinkable Wrap Around Sleeve
Polymeric Insulators	Support Isulator
PVC Cap
Miscellaneous	Constant Force Spring \| Mastic Tape \| Clamps

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