Polyethylene Heat Shrinkable Sleeve for Anticorrsion Coating of Oil and Gas Pipeline

Product Description

Polyethylene Heat Shrinkable Sleeve for Anticorrsion Coating of Oil and Gas Pipeline Product Description
Heat shrinkable sleeve/belt is suitable for steel pipe with 3-layer PE or 2-layer PE anti-corrosion system,fusion bonded epoxy,insulated pipe jacket and HDPE drainage pipeline.
On the basic of the original product(heat shrinkable sleeve/belt with 2 layers) Qingdao Huashida Machinery Co., Ltd. has developed the 3-layer fiber reinforced PE heat shrinkable sleeve/belt is composed of cross-linked polyethylene back, a middle layer of fiber and special heat melt adhesive. The 3 layer reinforced sleeve/belt gives better shrink ratio, and better strength. It is resistant to corrosion, wear, impact, UV and aging, easier to be operated.
Application scope:
The heat shrinkable sleeve/belt is designed to be applied with minimum preheating and is ideal for large diameter wastewater pipe, steel pipe with 3-layer PE protection system and pre-insulated pipeline joint closure.
- application of heat shrinkable sleeve 1) Oil & Gas Pipe 2) For pre-insulated pipe 3) For metal reinforced HDPE corrugated pipe (drainpipe)
4) Plastic manhole
- application of heat shrinkable belt
Construction procedure
1. Clean the steel pipe and heat it by fire till over 80 ºC
2. Paint the steel pipe with Primer (mixed with A&B)
3. Fire heat the heat shrink sleeve, be attention to start heating from middle of the sleeve, but act from up and down, and gradually move from middle to two sides of sleeve, in order to drive air out of the sleeve, after finish heating, the good result is that there is about 1-2mm hot adhesive melt at the edge of sleeve.
Feature of our heat shrinkable sleeve/belt :
1.Fast shrinkage speed,
2.good waterproof performance,
3 good anti-corrosive performance,
4.long service life, convenient transportation and fast construction. 5.using pure PE material and imported adhesive for ensuring the quality
Product Parameters
Technical parameters

NO

Text Item

Unit

Performance

Text Result

Text Method

Back Material

1

Tensile Strength

MPa

≥17

19.47

ASTM D638

2

Elongation

%

≥400

626

ASTM D638

3

Vicat Softening Point

ºC

≥90

92

ASTM D1525

4

Brittleness Temperature

ºC

<-65

<-65

ASTM D2671C

5

Dielectric Strength

MV/m

≥25

33.13

ASTM D149

6

Volume Resistivity

Ω.m

≥1*1013

1.1*1013

ASTM D257

7

Environment Stress Crack

h

≥1000

>1000

GB/T1842

8

Chemical resistance (7d)

10% HCI

Tensile strength

MPa

≥85

104.9

ASTM D638

Elongation

%

≥85

96.3

ASTM D638

10% NaAH

Tensile strength

MPa

≥85

102.1

ASTM D638

Elongation

%

≥85

95.6

ASTM D638

10% NaCL

Tensile strength

MPa

≥85

108.3

ASTM D638

Elongation

%

≥85

94.1

ASTM D638

9

Thermal aging (150ºC,168h)

Tensile strength

MPa

≥14

20.7

ASTM D638

Elongation

%

≥300

630

ASTM D638

NO

Text Item

Unit

Performance

Text Result

Text Method

Adhesive

1

Lap Shear

MPa

≥1.0

1.5

ASTM D1002

2

Softening Point

ºC

≥90

90.1

ASTME28

3

Brittleness Temperature

ºC

<-15

<-15

ASTM D2671C

4

Peel strength(23+/-2ºC )

Steel

N/cm

≥70

145.6

ASTM D1000

Primer

N/cm

≥70

205.9

ASTM D1000

PE layer

N/cm

≥70

190.0

ASTM D1000