The CHINA KINWA Heat
Shrinkable wraparound pipeline Sleeves (HSS)
provide superior corrosion protection and
excellent bonding on buried and exposed steel
pipelines including oil or gas pipelines.
CHINA KINWA Heat Shrinkable Sleeves have been
designed with a unique cross- linked and adhesive
technology which make the products effectively
bonded to steel substrates and common pipelines
coatings such as polyethylene and fusion bonded
epoxy.
Features &
Benefits
CHINA KINWA Heat Shrinkable
Sleeves provide great corrosion protection,
Superior resistance to cathodic disbondment
and excellent durability against abrasion
and chemical attack. The result is effective,
long term protection against corrosion.
Typical Product Properties
Components
Properties
Test
method
Unit
Typical
value
Adhesive
Softening
point (ring &ball)
ASTM-E28
℃
110±5
Peel strength
at 25 ±5 ℃（PE/PE）
GB/T2792
N/cm
≥110(min)
Peel strength
at 25 ±5 ℃（PE/STEEL）
GB/T2792
N/cm
≥110(min)
Peel strength
at 25 ±5 ℃（PE/EXPOSY）
GB/T2792
N/cm
≥110(min)
Lap shear
strength at 23oC
ASTM-D1002
N/cm2
500
(min)
Backing
Tensile Strength
ASTM-D638
Psi
≥2400
Elongation
ASTM-D638
%
≥550
Heat aging
at 150oC for 14days（Tensile Strength）
ASTM-D638
Psi
≥600
Heat aging
at 150 ℃ for 14days（Elongation ）
ASTM-D638
%
≥400
Volume resisitivity
at 23 ℃
ASTM-D252
Ohm-cm
≥1×1015
Hardness
ASTM-D22
Shore
D
≥55
Water absorption
at 23 ℃ for 24hrs
ASTM-D570
%
≤0.1
Heat shock
250oC for 4hrs
ASTM-D267
Pass
Dielectric
strength at 23 ℃
ASTM-D149
Kv/mm
≥28
Sleeve
Resistance
to impact at 23 ℃
ASTM-C14
Inch/lbs
130
Cathodic
disbond
ASTM-C42
mm
15
Penetration
resisitance
ASTM-G17
No
holiday
Soil stress
creep resistance at 80 ℃ for 24hrs
Inch
≥0.1
Specification
Specification
Pipe
Diameter
Width
of Sleeve
Shrink
Ratio
Remarks
HSS76x400
Ø
76
400
≥25
Recommended the backing
thickness should be over
1.2mm and adhesive layer
should be over 0.8mm
HSS89x500
Ø
89
500
≥25
HSS114x500
Ø
114
500
≥25
HSS159x500
Ø
159
500
≥20
HSS168x500
Ø
168
500
≥20
HSS219x500
Ø
219
500
≥20
HSS273x500
Ø
273
500
≥20
HSS323x500
Ø
323
500
≥18
HSS355x500
Ø
355
500
≥18
HSS377x500
Ø
377
500
≥18
HSS406x500
Ø
406
500
≥18
Recommended the backing
thickness should be over
1.5mm and adhesive layer
should be over 0.8mm
HSS457x500
Ø
457
500
≥18
HSS508x500
Ø
508
500
≥18
HSS559x500
Ø
559
500
≥18
HSS610x500
Ø
610
500
≥18
HSS660x500
Ø
660
500
≥18
HSS711 x500
Ø
711
500
≥18
HSS764x500
Ø
764
500
≥18
HSS813x500
Ø
813
500
≥18
HSS1016x500
Ø
1016
500
≥18
HSS1250x500
Ø
1250
500
≥18
All specifications of HSS are in
accordance with difference pipelines
diameters with outer corrosion protection
coating, specially used for 2-layer
PE 3-layer PE coated pipeline. Backing
thickness is from 1.0 to 1.5 and adhesive
layer thickness is from 0.8 to 2.0.
No.3286 Gongnong Street, 
0086-431-85694042 
0086-431-85683672 
130021
