Heat-Shrinkable Tapes | Unified Anti-Corrosion

Fiberglass Reinforced Sleeve

HDD

Horizontal Drilling Direction Protection

Dasheng's HDD sleeve Fiberglass Reinforced Sleeve is applying for Horizontal Drilling Direction Pipe, for river and street crossing pipe service. It consists of a 3-layer system: Non-solvent 2-component primer, adhesive layer with high peeling and lap shear strength, and fiberglass reinforced cross-linked polyethylene layer.

Specifications

PROPERTY	TEST METHOD	PP TAPE
Operating Temperature		Up to 80°C
Bursting strength	DIN EN 12068	2,000 N
Tensile Strength	ASTM D638	22MPa
Elongation	ASTM D638	600%
Hardness, ShoreD	ASTM D2240	55
Volume Resistivity	ASTM D257	1x 10¹⁷ Ω-cm
Water Absorption	ASTM D570	< 0.05% (Wt)
Softening Point	ASTM E28	>120°C
Lap Shear	DIN EN 12068	365 N/cm²@23°C
Lap Shear	DIN EN 12068	N/cm²@60°C
Peel Strength	DIN EN 12068	110N/cm @ 23°C
Impact Resistance Cathodic disbondment	DIN EN 12068	> 5J
@23 °C, 28 days	ISO21809-3	3mm rad
Indentation Resistance	ISO21809-3	>1.0mm @80 °C
Abrasion Resistance	ASTM D1044	30mg

Range

Standard manufacturing range covers the following sizes and dimensions:

DIMENSION	RANGE
Sleeve width	Up to 720mm
Backing thickness (recovered)	1.0mm to 1.5mm

DIMENSION	RANGE
Adhesive thickness	0.8mm to 1.5mm
Roll length	10M, 15M & 30M

Electrofusion Sleeve

For anti-corrosion joint of buried insulation pipe

The electrofusion sleeve for thermal insulation pipeline is a kind of connecting pipe made of HDPE sheet embedded with special electric heating mesh by heat sealing. Because it can form a molten material flow between the electrofusion sleeve and the pipe HDPE jacket when it is electrically connected, molecules can penetrate and diffuse each other, so it can form a solid combination after cooling. Therefore, the electrofusion sleeve has good sealing performance, firm connection position, high tensile strength, can bear large shear force and strong environmental adaptability, and can be used as a traction pipe, which is mainly used for thermal pipelines.

Product Features

High connection strength and high tensile strength;
It is integrated with the original pipe fitting, with good sealing effect, high gas sealing performance;
Corrosion resistance;
The construction is convenient and quick.

Product Usage

Suitable for anti-corrosion joint of buried insulation pipe;
Suitable for spiral corrugated pipe of central control winding pipe and steel strip reinforced pipe.

Performance Index

PROPERTY	TEST METHOD	UNIT	TYPICAL VALUE
Density	ISO 1183-1: 2019, 23°C	g/cm³	0.95
Carbon black content	ISO 6964:2029, 23°C	%	2.1
Hardness	ISO 868: 2003, 23°C	Shore D	55
Melt Mass Flow Rate	ISO 1133-1 :2022 Procedure A	g/10 min	0.23
Oxidation induction period (OIT)	ISO 11357-6: 2018, 210°C	Minute	≥ 30
Stress crack resistance	EN489: 2009, & EN253:2009	Hour	307h no crack
Elongation at break	EN253:2019 Peel 100mm/min		900
Heat Reversion	EN253:2019 &ISO 2505:2023	--	No cracks, faults, cavities or blisters. Longitudinal change less than 3%
Soil stress test	EN489	After the joint sandbox test, no tear or damage was found in the joint insulation structure; No water seepage was found in the joint after water tightness test.

Related Pictures

Pressure sensitive tape & Viscosity tape system

PAS

For pipeline repair and corrosion protection

Dasheng Pressure-sensitive adhesive tape (PAS) consists of a radiation cross-linked modified polyethylene backing, coated with a specially formulated, pressure sensitive, butyl rubber mastic. PAS tape is viscous when in cold condition. It has excellent sealing properties and is easy to install. It provides excellent resistance to cathodic disbondment resulting in effective, long-term corrosion protection.

No primer or special preparation of the steel surface is needed. The application method is easy even in difficult field conditions. PAS can be widely used for pipeline repair and corrosion protection of new pipelines.

The viscosity tape is constructed by coating. Its unique cold flow characteristics and excellent anti-corrosion sealing can effectively isolate harmful substances (such as water, oxygen, corrosive bacteria and corrosive chemicals) in the environment around the pipeline, preventing corrosion and extending the service life of the pipeline. The viscosity tape can significantly reduce production costs by reducing pipeline maintenance costs.

Specifications

Non-crystalline low viscosity polyolefin compound

ITEM	DATA	TEST METHOD
Holiday detection	Pass	ISO21809-3
Drip resistance (90°C, 48h)	Pass	ISO21809-3
Peel strength to pipe surface, N/mm	0.429	ISO21809-3
Peel strength to pipe surface, N/mm	0.087	ISO21809-3
Hot water immersion (90°C, 100day)/Peel strength to pipe surface, N/mm	0.540, @23°C Coverage > 95%	ISO21809-3
Hot water immersion (90°C, 100day)/Peel strength to pipe surface, N/mm	0.03, @70°C Coverage > 95%	ISO21809-3
Thermal ageing resistance(90°C, 100day)/Peel strength to pipe surface, N/mm	0.685 @23°C Coverage > 95%	ISO21809-3
Thermal ageing resistance(90°C, 100day)/Peel strength to pipe surface, N/mm	0.126 @70°C Coverage > 95%	ISO21809-3
Lap shear strength, N/mm² (23°C)	0.05 Coverage > 95%	ISO21809-3
Lap shear strength, Mpa (70°C)	0.01 Coverage > 95%	ISO21809-3
Insulation resistance//Rs₁₀₀, Ωm²	4.56×10¹⁰	ISO21809-3
Insulation resistance//Rs₁₀₀/Rs₇₀	0.84	ISO21809-3

Non-crystalline low viscosity polyolefin compound (Dasheng viscosity tape) + pressure sensitive tape

ITEM	DATA	TEST METHOD
Impact resistance, J	≥ 15J	ISO21809-3
Indentation resistance//Residual thickness, mm (1.0MPa,70°C, ±2)	1.79	ISO21809-3
Cathodic disbondment resistance, mm (70°C ±2°C, 28d)	0.mm no holiday	ISO21809-3
Peel strength outer layer to outer layer, N/mm	5.492 @23°C	ISO21809-3
Peel strength outer layer to outer layer, N/mm	0.193 @70°C	ISO21809-3
Peel strength to plant coating, N/mm	0.22 @70°C	ISO21809-3
Peel strength (P₁₀₀/P₀) outer layer to outer layer after hot water immersion for 100 days at 70°C	1.62	ISO21809-3
Peel strength (P₁₀₀/P₀) outer layer to plant coating after hot water immersion for 100 days at 70°C	2.61	ISO21809-3
Peel strength (P₁₀₀/P₀) outer wrap layer to outer warp layer after thermal ageing for 100 days at 90°C	1.77	ISO21809-3

Range & Dimensions

Regular size: For viscosity tape, 100mm wide, 1.8mm thick, 10m per roll.

It is possible to make to order for suitable quantity.

Pressure sensitive tape is 450mm to 550mm to order.

Characteristics

Material characteristics excellent cold flow characteristics;
Excellent anti-corrosion sealing;
Excellent stability against chemical medium;
Non-toxic green environmental protection;
Dasheng Pressure-sensitive adhesive tape used with Dasheng visco-elastic tape as a system, can satisfy ISO21809-3 13B-2.

WRAPAROUND SHRINK TAPE

WT

For joint coating of pipelines

Dasheng's WT series wrapping tape 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.

Specifications

PROPERTY	TEST METHOD	WSS 60 TAPE	WSS80 TAPE	WSS100
Operating Temperature		Up to 60°C	Up to 60°C	Up to 60°C
Tensile Strength	ASTM D638	3,000 psi	3,300 psi	3,000 psi
Elongation	ASTM D638	650%	650%	600%
Hardness, ShoreD	ASTM D2240	50	55	55
Dielectric Strength	ASTM D149	35kV/mm	35kV/mm	35kV/mm
Volume Resistivity	ASTM D257	1x 10¹⁶ Ω-cm	1x 10¹⁶ Ω-cm	1x 10¹⁶ Ω-cm
Water Absorption	ASTM D570	< 0.05% (Wt)	< 0.05% (Wt)	< 0.05% (Wt)
Softening Point	ASTM E28	110°C	125°C	135°C
Lap Shear	DIN EN 12068	0.07N/mm²@60°C	0.20N/mm²@80°C	0.50N/mm²@80°C
Peel Strength	DIN EN 12068	7 N/mm @ 23°C	9 N/mm @ 23°C	10 N/mm @ 23°C
Impact Resistance	DIN EN 12068	> 15 J	> 15 J	> 15 J
Indentation Resistance	DIN EN 12068	> 0.6mm @ 60°C	> 0.6mm @ 80°C	> 0.6mm @ 80°C
Cathodic Disbandment	DIN EN 12068	< 7mm rad.	< 9mm rad.	< 15mm rad.

Range

Standard manufacturing range covers the following sizes and dimensions:

The heat shrinkable tape width: 50mm, 100mm, 150mm, 200mm, 250mm, 300mm
The tape total thickness: 1.8mm, 2.0mm, 2.2mm, 2.3mm, 2.5mm

HEAT SHRINK TUBULAR SLEEVE

TS

For joint coating of pipelines

TS series Tubular Sleeves have an irradiated polyolefin backing, coated with a mastic or hot melt adhesive on the inside. Being a single piece, it is easier to install as compared to the wraparound design and offers higher integrity of protection. The adhesive coated sleeves can be used with or without primer, depending on the application. Mastic coated sleeves are suitable for lower pipeline operating temperatures.

Technical Data

Property	Test Method	Unit	Typical Value
			TS(M)	TS(A)
Pipe Temperature (Max)	-	-	50°C	60°C
Tensile Strength	ASTM D638	psi	2,500	2,700
Ultimate Elongation	ASTM D638	%	500	500
Volume Resistivity	ASTM D257	Ω-cm	1 x 10¹⁵	1 x 10¹⁵
Dielectric Strength	ASTM D149	kV/mm	25	25
Water Absorption	ASTM D570	% Wt	0.05	0.05
Softening Point	ASTM E28	°C	78	110
Peel Strength	DIN 30672	N/cm	60	60
Lap Shear Strength	DIN 30672	N/cm²	140	140
Impact Resistance	DIN 30672	J	>15	>15
Penetration Resistance	ASTM G17	-	Pass	Pass
Cathodic Disbondment	ASTM G42	mm-radius	-	10
Dielectric Breakdown	ASTM D149	kV	40	40

Range & Dimensions

Sleeve Diameter	Suitable for different pipe diameters from DN 50 to DN 1500
Sleeve Width	Standard width is 500mm. Other widths against request.
Backing Thickness	1.2mm or 1.5mm according to pipe diameter.
Adhesive Thickness	0.8mm. Other thickness against request.

Ordering Information

To order these sleeves, please mention Type - Pipe Size - Sleeve Width - Backing Thickness / Adhesive or Mastic Thickness.

COATING REPAIR MATERIALS

RP/FM/MS

For sealing damages to coating

The Repair Patch consists of an irradiated cross-linked polyolefin backing with a heat activated adhesive layer. The patch is specifically designed for sealing damages caused to the pipe coating during transportation, handling and laying. In combination with filler mastic or melt stick and epoxy primer most minor damages and cracks can be repaired effectively. It is compatible with most of the common pipeline coatings and suitable for operating temperatures up to 60°C.

Specifications

REPAIR PATCH

NO.	PROPERTY	TEST METHOD	UNIT	TYPICAL VALUE
Backing
1	Tensile Strength	ASTM D638	MPa	24.5
2	Ultimate Elongation	ASTM D638	%	565%
3	Volume Resistivity	ASTM D257	Ω-cm	1 x 10¹⁴
4	Dielectric Strength	ASTM D149	kV/mm	37
5	Water Absorption 23°C, 24H	ASTM D570	% Wt.	0.15
Adhesive
1	Softening Point	ASTM E28	°C	137
2	Peel Strength	EN 12068	N/mm	9.10
3	Lap Shear	EN 12068	N/mm²	1.81
Installed Product
1	Impact Resistance	EN 12068	J	> 15
2	Penetration Resistance	EN 12068	-	> 0.6mm
3	Cathodic Disbondment (30days)	ASTM G42	mm- radius	< 20
4	Dielectric Breakdown	ASTM D149	kV	40

MELT STICK

NO.	PROPERTY	TEST METHOD	UNIT	TYPICAL VALUE
1	Tensile Strength	ISO 527	MPa	5.1
2	Shore D	ISO 868	--	40
3	Holiday detection	ISO21809-3	5kV/mm±5kV	pass
4	Dielectric Strength	ASTM D149	kV/mm	31

Dimensions

DIMENSION	REPAIR PATCH (RP)	FILLER MASTIC (FM)	MELT STICK (MS)
Width	150mm-450mm	75mm	25mm Dia.
Thickness	2.0mm	0.75mm	25mm Dia.
Length	10m, 15m & 30m	4m	250mm

FOR THERMO-INSULATION PIPE END

WPC

Dasheng's water proof cap, made of irradiated crosslinked polyethylene back coated with hot melt adhesive, is specially designed for thermal insulation pipe in order to shield water into thermal insulation layer. This kind of heat shrinkable encapsulate cap is widely used in raw oil or water pipe in the field and shows excellent performance of water shield and low moisture permeability in storage and transportation.

Specifications

PROPERTY	TEST METHOD	UNIT	TYPICAL VALUE
Tensile Strength	ASTM D638	psi	2600
Elongation	ASTM D638	%	500
Dielectric Strength	ASTM D149	kV/mm	25
Volume Resistivity	ASTM D257	Ω-cm	1 x 10¹⁶
Water Absorption	ASTM D570	% (Wt)	< 0.05
Softening Point	ASTM E28	°C	90
Peel Strength	DIN EN 12068	N/cm @ 23°C	60