Wraparound Shrink Sleeves

for joint coating of pipelines

Operating Temperature Up to 65°C

WSS60

DVGW Certified

Wraparound Shrink Sleeve

Dasheng's WSS 60 sleeves consist of a radiation cross-linked heat shrinkable backing, coated on the inside with a heat activated adhesive. While the modified polyethylene material of the backing offers superior mechanical protection, the specially formulated adhesive offers excellent corrosion protection under demanding conditions. Used in conjunction with the proprietary epoxy primer, the 3 layer system is the choice of discerning clients who need long term corrosion protection. The system is suitable for most of the common pipeline coatings like PE, FBE etc.

WSS60 Sleeve

icon Specifications

PropertyTest MethodWSS 60
Backing
Tensile StrengthASTM D638> 3,000psi
ElongationASTM D638> 550%
Hardness, ShoreDASTM D224055
DensityASTM D-7920.95 kg/dm³
Dielectric StrengthASTM D14935kV/mm
Volume ResistivityASTM D2571×10¹³Ω-cm
Water AbsorptionASTM D570< 0.05% (Wt)
Adhesive
Softening PointASTM E28111°C
Lap ShearDIN EN 120680.09N/mm²@50°C
Lap ShearDIN EN 120680.07N/mm²@60°C
Installed Product
Peel StrengthDIN EN 120687N/mm
Peel StrengthDIN 30672-
Impact ResistanceDIN EN 12068> 15 J
Low temperature flexibilityASTM D2671,C-20°C
Indentation ResistanceDIN EN 12068>0.6 mm @ 60°C
Cathodic DisbandmentDIN EN 12068 @28 days< 7mm radius@60°C
Resistance to thermal AgeingDIN EN 12068After 100 days @ 100°C
- Tensile strength ratioDIN EN 120680.9
- Elongation ratioDIN EN 120680.9
Hot water immersionISO21809-3@60°C, 100daysP₁₀₀/P₀ ≥ 0.75

icon Range

Standard manufacturing range covers the following sizes and dimensions:

  • Sleeve width: Up to 950mm
  • Backing thickness (recovered): 1.0mm to 1.5mm
  • Adhesive thickness: 0.8mm to 2.0mm
  • Roll length: 10M, 15M & 30M

icon Packing & Delivery

WSS 60 Sleeves can be delivered as kits or in roll form. Each factory assembled kit will consist of one sleeve, suitable for a particular pipe size, a separate closure seal and pre-measured quantities of solvent free, two-part epoxy primer. In addition, the kits will also contain small tools like mixing stick, application pads and gloves. In the event of ordering sleeve rolls, closure seals and epoxy primer kits can be ordered separately.

icon Ordering Information

WSS60 Ordering Information

Note: When ordering as rolls, please replace Pipe Size with Roll Length in meters. e.g. "30M"

icon Additional Information

Coating Repair Materials

Repair Patch, Melt Stick & Mastic Filler are available separately. Please enquire with us.

Sleeve Width

Minimum sleeve width required is 100mm more than the width of the bare steel.

icon Application Guide

Pipe Size
DN		Pipe OD
inch		Pipe OD
(mm)		Sleeve Length
(mm)		Closure Width
(mm)		Epoxy Primer Part A
(gms)		Epoxy Primer Part B
(gms)
10041145001003912
12551416001004915
15061686901005817
20082198501007623
2501027310401209428
30012324123012011234
35014356134012012337
40016406149012014042
45018457166012015847
50020508184015017653
60024610218015021163
70028711240015024674
80032813275015028184
90036914309015031695
10004010163430150351105
11004411203780150386116
12004812204120160421126
14005614204790160491147
15006015205130180526158
16006416205460180561168
17006817205800180596179
18007218206130180631189
19007619206470180666200
20008020206800180701210
22008822007410180850225

Calculation details for a sleeve width of 450mm wide and primer coating thickness of 125μm

Operating Temperature Up to 85°C

WSS80

DVGW Certified ISO 21809-3 Certified

Wraparound Shrink Sleeve

Dasheng's WSS 80 sleeves consist of a radiation cross-linked heat shrinkable backing, coated on the inside with a heat activated adhesive. While the modified polyethylene material of the backing offers superior mechanical protection, the specially formulated adhesive offers excellent corrosion protection under demanding conditions. Used in conjunction with the proprietary epoxy primer, the 3 layer system is the choice of discerning clients who need long term corrosion protection. The system is suitable for most of the common pipeline coatings like PE, FBE etc.

WSS80 Sleeve

icon Specifications

PropertyTest MethodWSS 80
Backing
Tensile StrengthASTM D6383,300 psi
ElongationASTM D638650%
Hardness, ShoreDASTM D224055
Dielectric StrengthASTM D14935kV/mm
Volume ResistivityASTM D2571×10¹³Ω-cm
Water AbsorptionASTM D570< 0.05% (Wt)
Adhesive
Softening PointASTM E28125°C
Lap ShearASTM D10025.1N/mm²@80°C
Lap ShearDIN EN 120680.20N/mm²@80°C
Installed Product
Peel StrengthDIN EN 120689 N/mm
Impact ResistanceDIN EN 12068> 15 J
Low temperature flexibilityASTM D2671,C-20°C
Indentation ResistanceDIN EN 12068>0.6mm @ 80°C
Cathodic DisbandmentDIN EN 12068< 9 mm rad. @80°C, 28 days
Resistance to thermal AgeingDIN EN 12068After 100 days @ 100°C
- Tensile strength ratioDIN EN 120680.9
- Elongation ratioDIN EN 120680.9
Ultraviolet irradiation resistance ratio ofDIN EN 12068
- Tape strengthDIN EN 12068Sx/So 0.9
- Elongation at breakDIN EN 12068Ex/Eo 0.9
Hot water immersionASTM D870@80°C, 120 daysNo delamination, no blisters or water ingress
Soil stress creep resistanceTP-206@80°C0.16mm

icon Range

  • Sleeve width: Up to 950mm
  • Backing thickness (recovered): 1.0mm to 1.5mm
  • Adhesive thickness: 0.8mm to 2.0mm
  • Roll length: 10M, 15M & 30M

icon Packing & Delivery

WSS 80 Sleeves can be delivered as kits or in roll form. Each factory assembled kit will consist of one sleeve, suitable for a particular pipe size, a separate closure seal and pre-measured quantities of solvent free, two-part epoxy primer. In addition, the kits will also contain small tools like mixing stick, application pads and gloves. In the event of ordering sleeve rolls, closure seals and epoxy primer kits can be ordered separately.

icon Ordering Information

WSS80 Ordering Information

Note: When ordering as rolls, please replace Pipe Size with Roll Length in meters. e.g. "30M"

icon Additional Information

Coating Repair Materials

Repair Patch, Melt Stick & Mastic Filler are available separately. Please enquire with us.

Sleeve Width

Minimum sleeve width required is 100mm more than the width of the bare steel.

icon Application Guide

Pipe Size
DN		Pipe OD
inch		Pipe OD
(mm)		Sleeve Length
(mm)		Closure Width
(mm)		Epoxy Primer Part A
(gms)		Epoxy Primer Part B
(gms)
10041145001003912
12551416001004915
15061686901005817
20082198501007623
2501027310401209428
30012324123012011234
35014356134012012337
40016406149012014042
45018457166012015847
50020508184015017653
60024610218015021163
70028711240015024674
80032813275015028184
90036914309015031695
10004010163430150351105
11004411203780150386116
12004812204120160421126
14005614204790160491147
15006015205130180526158
16006416205460180561168
17006817205800180596179
18007218206130180631189
19007619206470180666200
20008020206800180701210
22008822007410180850225

Calculation details for a sleeve width of 450mm wide and primer coating thickness of 125μm

Operating Temperature Up to 100°C
WSS100

Wraparound Shrink Sleeve

Dasheng's WSS 100 sleeves consist of a radiation cross-linked heat shrinkable backing, coated on the inside with a heat activated adhesive. While the modified polyethylene material of the backing offers superior mechanical protection, the specially formulated adhesive offers excellent corrosion protection under demanding conditions. Used in conjunction with the proprietary epoxy primer, the 3 layer system is the choice of discerning clients who need long term corrosion protection. The system is suitable for most of the common pipeline coatings of high operating temperature like PE, FBE etc.

WSS100 Sleeve

icon Specifications

PropertyTest MethodWSS 100
Backing
Tensile StrengthASTM D6383,000 psi
ElongationASTM D638600%
Hardness, ShoreDASTM D224055
Dielectric StrengthASTM D14930kV/mm
Volume ResistivityASTM D2571×10¹³Ω-cm
Water AbsorptionASTM D570< 0.05% (Wt)
Adhesive
Softening PointASTM E28135°C
Lap ShearDIN EN 120683 N/mm²@23°C
Lap ShearDIN EN 120680.5N/mm²@100°C
Installed Product
Peel StrengthDIN EN 1206810 N/mm@23°C
Peel StrengthDIN EN 120681.0 N/mm@100°C
Impact ResistanceDIN EN 12068> 15 J
Cathodic DisbandmentDIN EN 12068≤ 15mm rad. @ 95°C
Hot water soak 28 daysDEP 31.40.30.37-Gen≥ 8N/mm

icon Range

  • Sleeve width: Up to 950mm
  • Backing thickness (recovered): 1.0mm to 1.5mm
  • Adhesive thickness: 0.8mm to 2.0mm
  • Roll length: 10M, 15M & 30M

icon Packing & Delivery

WSS 100 Sleeves can be delivered as kits or in roll form. Each factory assembled kit will consist of one sleeve, suitable for a particular pipe size, a separate closure seal and pre-measured quantities of solvent free, two-part epoxy primer. In addition, the kits will also contain small tools like mixing stick, application pads and gloves. In the event of ordering sleeve rolls, closure seals and epoxy primer kits can be ordered separately.

icon Ordering Information

WSS100 Ordering Information

Note: When ordering as rolls, please replace Pipe Size with Roll Length in meters. e.g. "30M"

icon Additional Information

Coating Repair Materials

Repair Patch, Melt Stick & Mastic Filler are available separately. Please enquire with us.

Sleeve Width

Minimum sleeve width required is 100mm more than the width of the bare steel.

icon Application Guide

Pipe Size
DN		Pipe OD
inch		Pipe OD
(mm)		Sleeve Length
(mm)		Closure Width
(mm)		Epoxy Primer Part A
(gms)		Epoxy Primer Part B
(gms)
10041145001008822
150616869010012832
200821985010014637
25010273104012017845
30012324123012020050
35014356134012022055
40016406149012024862
45018457166012027669
50020508184015029674
60024610218015034887
700287112400150400100
800328132750150472118
900369143090150530133
10004010163430150588147
12004812204120160720180
14005614204790160952238
160064162054601801032258

Calculation details for a sleeve width of 450mm wide and primer coating thickness of 150μm

Operating Temperature Up to 110°C
WSS PP

Wraparound Shrink Sleeve

DASHENG's polypropylene sleeves consist of a radiation cross-linked heat shrinkable backing, coated on the inside with a heat activated adhesive. While the modified polypropylene material of the backing offers superior mechanical protection, the specially formulated adhesive offers excellent corrosion protection under demanding conditions. Used in conjunction with the proprietary epoxy primer, the 3 layer system is the choice of discerning clients who need long term corrosion protection. The system is suitable for most of the common pipeline coatings like PP, FBE etc.

WSS PP Sleeve

icon Specifications (WSS-PP-II Sleeve)

PropertyTest MethodUnitWSS-PP-II Sleeve
Backing
Tensile Strength @23°CASTM D638N/mm²28
Elongation @23°CASTM D638%600
HardnessASTM D2240Shore D60
Dielectric StrengthASTM D149kV/mm31
Volume ResistivityASTM D257Ω-cm1×1015
Water Absorption (Wt)ASTM D570%0.02
Adhesive
Softening PointASTM E28°C148
Lap Shear @23°CISO 21809-3N/mm²9.5
Lap Shear @100°CISO 21809-3N/mm²1.1
Low temp. Flexibility @-40°CASTM D746-Pass
Installed Product
Peel Strength @23°CISO21809-3N/mm160
Peel Strength @110°CISO21809-3N/mm55
Impact ResistanceDIN EN 12068J> 15
Indentation Resistance @110°C,10N/mm²ISO 21809-3mm1.1
Cathodic Disbandment 23°C,28daysISO 21809-3mm2.3
Cathodic Disbandment @95°C,28daysISO 21809-3mm7.5

icon Range

  • Sleeve width: Up to 750mm
  • Backing thickness (recovered): 1.0mm to 1.5mm
  • Adhesive thickness: 0.8mm to 2.0mm
  • Roll length: 10M, 15M & 30M

icon Packing & Delivery

WSS PP Sleeves can be delivered as kits or in roll form. Each factory assembled kit will consist of one sleeve, suitable for a particular pipe size, a separate closure seal and premeasured quantities of solvent free, two-part epoxy primer. In addition, the kits will also contain small tools like mixing stick, application pads and gloves. In the event of ordering sleeve rolls, closure seals and epoxy primer kits can be ordered separately.

icon Coating Repair Materials

Repair Patch, Melt Stick are available separately. Please enquire with us.

icon Sleeve Width

Minimum sleeve width required is 100mm more than the width of the bare steel.

icon Application Guide

Pipe Size
DN		Pipe OD
inch		Pipe OD
(mm)		Sleeve Length
(mm)		Closure Width
(mm)		Epoxy Primer Part A
(gms)		Epoxy Primer Part B
(gms)
1004114490758020
150616867010012030
200821984010016040
25010273102012018045
30012324121012022055
35014356129012024060
40016406145012028070
45018457163015032080
50020508180015034085
600246102130150400100
700287112470150460115
800328132810150560140
900369143130150620155
10004010163460150700175
12004812194080150880220
140056142247201601040260
160064162053701801260315
180072183360601801400350
200080202467301801540385
220088222073302001700425

Calculation details for a sleeve width of 300mm and primer coating thickness of 200μm

Mastic Adhesive System
WSS(M)

Wraparound Shrink Sleeve

Dasheng's WSS(M) 60 and WSS(M) 80 sleeves consist of a radiation cross-linked heat shrinkable backing, coated on the inside with a heat activated adhesive. While the modified polyethylene material of the backing offers superior mechanical protection, the specially formulated adhesive offers excellent corrosion protection under demanding conditions. As a 2-PE system, it is convenient for construction. The system is suitable for most of the common pipeline coatings like PE, FBE etc.

WSS(M) Sleeve

icon Specifications

PropertyTest MethodWSS(M) 60 (Mastic)WSS(M) 80 (Mastic)
Application temperature60°C80°C
Operating TemperatureUp to 65°CUp to 85°C
Backing
Tensile StrengthASTM D6382900 psi3000 psi
ElongationASTM D638600%600%
Hardness, ShoreDASTM D22404650
Shrink ForceASTM D63835 psi35 psi
Dielectric StrengthASTM D14920kV/mm20kV/mm
Volume ResistivityASTM D2571×10¹³Ω-cm1×10¹³Ω-cm
Water AbsorptionASTM D570< 0.05% (Wt)< 0.05% (Wt)
Adhesive
Softening PointASTM E2895°C120°C
Lap ShearDIN EN 120681 N/mm²@23°C1.3 N/mm²@23°C
Installed Product
Peel StrengthDIN EN 1206850N/cm @ 23°C50N/cm @ 23°C
Impact ResistanceDIN EN 12068>10J>10J
Indentation ResistanceDIN EN 12068PassPass
Cathodic DisbandmentSCA Z245.21 Class 12.3 28d, (Radius)9.8mm rad.@20°C8mm rad.@20°C
Epoxy Primer For 3 Layer Systems

EP

ISO21809-3 Certified

The Epoxy Primer is a two component, solvent free, proprietary formulation. The components are mixed prior to application in the field. The resultant coating forms the first layer of the 3-layer corrosion protection system. The primer should be applied on the pre-heated bare steel surface, as well as the line coating where the sleeve will be shrunk. The resultant film ensures superior corrosion protection. The primer can be used with TS(A) 60, WSS 60 and WSS 80 sleeves.

EP Epoxy Primer

icon PROPERTY

Specific Gravity (Part A)1.50
Specific Gravity (Part B)0.96
Volume of Solids100%
Mixing Ratio by weight (A:B)100:30
Mixing Ratio by volume (A:B)100:50
Life @ 23°C30 minutes
Shelf Life @ 35°C in shade18 months

icon TECHNICAL DATA

PROPERTYTEST METHODPP TAPE
Dried film thickness (mm)0.336ISO21809-3
Holiday Test (5kV/mm)passISO21809-3
Impact resistant J/mm -5°C 4.1 no holiday ISO21809-3
23°C 7.7 no holiday
Indentation @80°C, 10MPa% DFT25%ISO21809-3
Hardness (Shore D)81ISO 868
Adhesion, MPa to pipe surface 20.68 no split ISO 4624
to FBE 20.68 no split
to PE 5.7 100% A/B
Cathodic disbondment @23°C (mm)6.4ISO21809-3
Cathodic disbondment @80°C (mm)14.0ISO21809-3
Adhesion to pipe surface after 28-day hot-water immersion test at 23°C (MPa) to Steel 19.3 100% B ISO21809-3
to PE 3.9 100% A/B
Specific electrical insulation resistance 100 days at 23°C RS100 Ω-m² 6.6 x 106 ISO21809-4
RS100/RS10 0.83

Installation Procedure

WSS80 Heat Shrinkable Sleeve - 12 Step Installation Guide

1
Step 1

Clean joint area and sand/grit blast weld area to Sa2.5 per ISO 8501

2
Step 2

Clean surface by wiping and/or air blasting

3
Step 3

Pre-heat surface to 60-75°C, check at 4 points

4
Step 4

Mix two-part epoxy primer and apply to pre-heated surface

5
Step 5

Remove protective layer, centre sleeve over joint area

6
Step 6

Add sealing tape along overlap line, wrap sleeve loosely

7
Step 7

Heat closure seal adhesive till soft, centre and press firmly

8
Step 8

Continue heating closure seal, press down with Teflon roller

9
Step 9

Shrink sleeve from middle towards sides with moving flame

10
Step 10

Remove trapped bubbles with Teflon roller for even surface

11
Step 11

Post-heat gently, check all surfaces are soft to press

12
Step 12

Final inspection and quality control verification