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                INTRODUCTION
PE heat shrinkable tape (sleeve) is composed of cross-linked polyethylene back and special heat melt adhesive. Heat melt adhesive has good bonding with PE back, steel pipe and Fusion bonded epoxy (FBE layer). By heating PE back shrinks, adhesive layer melts, and closely wraps around pipe joints, then it forms together with FBE a firm and continuous anti-corrosion body. It is resistant to corrosion, wear, impact, UV and aging, easier to be operated.
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Wraparound products
Application area:
It is mainly used for wrapping around pipe, anti-corrosion of kinds of pipe joints, and repairing pipes.
For example: Oil and gas pipe, PU insulation pipe, 3PE/2PE steel pipe.
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                      CONSTRUCTION CASE
Heat shrinkable sleeve for Oil & Gas Pipe
Heat shrinkable sleeve forThermo Insulated Pipe 
COMPARISIONS
                TECHNICAL PARAMETERS
| NO | Text Item | Unit | Performance | Text Result | Text Metho | ||
| Back Material | |||||||
| 1 | Tensile Strengt | MPa | ≥17 | 19.47 | ASTM D638 | ||
| 2 | Elongatio | % | ≥400 | 626 | ASTM D638 | ||
| 3 | Vicat Softening Poin | ºC | ≥90 | 92 | ASTM D1525 | ||
| 4 | Brittleness Temperatur | ºC | <-65 | <-65 | ASTM D2671C | ||
| 5 | Dielectric Strengt | MV/m | ≥25 | 33.13 | ASTM D149 | ||
| 6 | Volume Resistivit | Ω.m | ≥1*1013 | 1.1*1013 | ASTM D257 | ||
| 7 | Environment Stress Crac | h | ≥1000 | >1000 | GB/T1842 | ||
| Â Â 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 Ite | Uni | Performanc | Text Resul | Text Metho | |
| Adhesive | ||||||
| 1 | Softening Poin | ºC | ≥90 | 90.1 | ASTM E28 | |
| 2 | Brittleness Temperatur | ºC | <-15 | <-15 | ASTM D2671C | |
| 3 | Lap Shea | MPa | ≥1.0 | 1.5 | ASTM D1002 | |
| Â 4 |
Peel Strength (23±2ºC |
Steel | N/cm | ≥70 | 145.6 | ASTM D1000 |
| Primer | N/cm | ≥70 | 205.9 | ASTM D1000 | ||
| PE laye | N/cm | ≥70 | 190.0 | ASTM D1000 | ||
| Non-solvent Epoxy Primer | ||||||
| 5 | Shear of cured primer | MPa | ≥5.0 | 12 | SY/T0041 | |
We are also producing machine of heat shrinkable sleeve, You are welcom to ask for more information.Â
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Atmospheric Desorption Electrolysis
Gold-loaded carbon normal pressure and same temperature desorption electrolysis complete equipment is used for the desorption and electrolysis of gold-loaded carbon.
1. High gold desorption rate: the carbon-poor gold grade after desorption is less than or equal to 80g/t (the products in the same industry are generally less than or equal to 100g/t).2. High primary electrolysis rate: the average electrolysis rate of desorption solution is ≥90%. (The products in the same industry are generally around 70%).
3. Accurate gold balance: the actual amount of gold obtained after desorption and electrolysis is consistent with the theoretical gold content in the gold-loaded carbon. (Products in the same industry generally have the phenomenon of "floating gold or accumulative funds", which causes the loss of gold in the processing process and makes the amount of gold unbalanced)
4. Efficient and easy to operate: The whole set of equipment adopts integrated design, signal acquisition, operation adjustment control and safety protection are automated to ensure high efficiency, easy operation, safety and reliability during the entire operation period.
Atmospheric Desorption Electrolysis,gold extraction machine,Desorption Electrolysis Device,Gold Ore Electrowinning
Changchun Gold Research Institute Co.LTD , https://www.changchungoldresearch.com