Description
1. The base of adhesive tape is
composed with reinforced mesh fiber to enhance the tension
intensity factor of the adhesive tape several times that of
traditional adhesive
tape, and such
mesh fiber structure may reduce winding tension and stress of
backfilled earth, and reduce possibility ofanticorrosion layer deform due to change of
temperature, and also resisting external impact to greatest extent
increasing of mechanical protection of corrosion layer. As
forcathode protection of piping,
thecathode protection current may not be
hindered without producing of cathodeshielding. Among all
anticorrosionlayers, cathode peeling resistance of
PP*0 series may be most outstanding.
2. Through strict
quality control and strict testing by professional
testingorganizations of CNPC,
our
product’s main performance data
(including peeling testing of prime paint steel, testing for base
tension intensity, testing for insulation voltage and testing
for vapor penetration rate ) are higher than the data
inSY/T
***4ï¼***7 Standard for Anticorrosion Layer of PEAdhesive tape.
3.With many years of development,
innovation, and improvement, theadhesive layer has much better performance
than traditional adhesive layer, in terms of more bonding force,
more elasticity, aging resistance,withoutsolidification
and hardening,
automatic restore closing after being damaged, and suitable
forthermal
expansion and contraction.
4. Improvement of
bonding strength of adhesive tape layer may promote combination of
adhesive tape with steel pipe. Bonding effect with self combination
is also realized. Hence good water resistance and
vaporpermeability is achieved and corrosion will
not occur.
5. The improved
adhesive layer becomes thickened, thus resulting in full
combination with weld, and the hollow in traditional corrosion
material will not occur.
6. The
pipe’s production procedure is simple,
convenient and effective. Our technicians are assigned to the
worksites to guide operation. Whether handwork or small tools or
large electric equipment can be used winding, which is spiral.
Single layer winding level can already reach the strengthening
category or specialstrengthening innational standards. Out adhesive tape is
easy to be found if winding is in conformity with design demand
right after on site work, and theanticorrosion work quality of adhesive tape is
easier to be controlled than traditionalasphalt glass fiberand epoxy pitch coal asphalt.
Theadhesive
tape can be
prefabricated at factory based on the site’s requirement. It can also be
wound at worksites. After winding, the pipe may be put
downimmediately into ditches and backfill without
any waiting. It can also be used for patching and repair at
worksites. The insulation performance of adhesive tape is stable
with high insulation voltage, applicable tovarious bad operation
conditions.
