美国老太太与欧美老人的文化差异,2021亚洲国产精品无码,久久久久久久久无码精品亚洲日韩,亚洲国产日韩在线视频,他将头埋进双腿间吮小核日本,yin荡的高中女小叶全集,强挺进小y头的小花苞,韩国电影按摩电影,厨房少妇人妻好深太紧了,网址你懂我意思正能量

　Product type: heat shrinkable belt

　　Main performance: wide bonding range, strong corrosion resistance, high mechanical strength, wide use environment, no volatilization, safe use, long service life, simple construction, strong operability.

　　Scope of application: Mainly used in gas pipeline, oil and gas pipeline, water supply and drainage pipeline and heat supply pipe network anti-corrosion repair, is an important anti-corrosion material in cathodic protection engineering.

　　Detailed introduction:

　　Radiation crosslinked polyethylene (IRXPE) heat shrink strip is a strip material composed of irXPE substrate and hot melt adhesive. The substrate is cross-linked polyethylene material radiated by high-energy particles. Compared with ordinary polyethylene, it has higher mechanical strength and heat aging, chemical media corrosion resistance, environmental stress cracking resistance, ultraviolet radiation resistance and other characteristics, and has a long service life. Hot melt adhesive has high bonding strength and good resistance to high and low temperature. This product is mainly used in gas pipeline > pipeline, oil and gas pipeline > pipeline, water supply and drainage pipeline > pipeline and heat supply pipeline anti-corrosion repair, with high shear strength, peel strength ≥70N/cm, anti-aging ability, good sealing performance, convenient construction and many other advantages, is an important anti-corrosion material in cathodic protection engineering.

　　Product features:

　　(1) A wide range of bonding: it can be bonded with steel, PE, epoxy paint, etc.;

　　(2) strong corrosion resistance: can effectively shield the penetration and corrosion of a variety of media, with aging resistance, environmental stress cracking resistance, ultraviolet radiation resistance;

　　(3) High mechanical strength: high compressive, impact and shear strength;

　　(4) the use of a wide range of environment: can be in the range of -25 ~ 35℃ construction;

　　(5) No volatilization, safe use;

　　(6) Long service life;

　　(7) The construction is simple and the operation is strong.

　Thermal shrinkage belt construction method

　　1, lap method

　　<1> Use spade knife, grinder, wire brush, emery cloth and other tools to polish the damaged part, and clean the construction surface with cotton yarn.

　　<2> According to the size of the damaged surface, fill with sealing material repeatedly until the thickness is equal to the anticorrosion layer, and finish the surface smooth with heated sand hook after filling.

　　<3> Cut a section of thermal shrinkage zone whose width is more than 100 mm larger than the damage part and length is more than 100 mm longer than the circumference of the steel pipe.

　　<4> Heating covered steel pipe surface, with a small fire heating heat shrink one end of the inner hot melt adhesive, so that it is horizontally pasted on the surface of the steel pipe, flattened with a drum, slightly cooled after heating the other end of the inner hot melt adhesive, and then wrapped along the circumference, so that the initial end and the end overlap, overlapping width is not less than 50㎜.

　　<5> Use a small flame to heat the overlapping part, and at the same time use a drum to flatten it, so that the lap is firm, and then heat according to the heat shrinkable heating method.

　　2. Winding method

　　<1>, <2> The same as heat contraction band lap method.

　　<3> The surface of the covered steel pipe is heated, and the inner layer of hot melt adhesive at the end of the heat shrinkable tape is heated with a small fire to make it stick on the surface of the steel pipe. According to the winding way of the adhesive tape, the heating is done while winding.

　　<4> Note that the end is firmly pasted. The covering width of the thermal shrinkage belt should not be less than 50mm from both sides of the damaged part, and the lap between the thermal shrinkage belt should not be less than 25mm