Shrink wrap is a shrinking band, which is primarily used at the elbow. Generally it's specifications are 5 cm, 10 cm, 15 cm, 20 cm, 25 cm, 30 cm. It can be applied to all pipe diameters ranging between DN25-DN2000. Substrate thickness from 1.0 to 2.0mm, layer thickness from 0.8-2.0mm. Shrink wrap series is buried and overhead steel pipes and insulation outer surface of the design and manufacture of anti-heat shrinkable strip corrosion, mainly for steel parts bent enwinding embalmed and pipe coating damage repair, can also be used to the entire steel pipe coating embalmed and wrapped mending embalmed. It is a composite of radiation cross-linked polyolefin substrate and special seals made of hot-melt adhesives, hot melt adhesives and specialty sealing polyethylene substrate, the steel surface and solid epoxy coating can form a good bond. Shrink wrapping tape Advantages: in the construction, the first preheating the pipe, with a machine or manually wound around the treated pipes, to ensure the overlap width of not less than 25mm, a uniform heating zone, strip uniform contraction in the radial direction while hot melt adhesive is melted. Filling and coating on the pipe, the pipe to form a solid continuous outer coating, can resist soil stress, anti-hydrostatic pressure, resistance to cathodic stripping, anti-corrosion behavior of a variety of chemical corrosion and mold erosion, provide long-term for steel pipes, effective protection. Shrink wrap Application Guide (Executive Standard: SY / T0413-2002 and EN12008) The maximum operating temperature of 70 ℃ applicable external corrosion coating PE, FBE, PP pipe preheat temperature 75 ℃ recommended rust grade Sa2.5, St3.0 Specifications Performance Test Method Typical values ??primer solids content of shrink wrap (%) GB / T1728 99.5 cathodic stripping (65 ℃, 48h) mm Q / SY GJX0113-2007 (Appendix D) 8 base Tensile strength Mpa GB / T1040-92 18 Elongation at break% GB / T1040-92 550 Dielectric strength MV / m GB / 1408.1-99 28 Volume resistivity Ω · m GB / T1410-89 4.0 × 1015 Water Absorption% ASTM D570 0.02% Thermal Aging (150 ℃, 21 天) GB / T1040-92 Tensile strength Mpa 18% elongation at break of 480 anti-UV aging EN12068 elongation at break of 480% hot melt adhesive softening point ℃ GB / T4507-85 110 wrap peel strength GB / T2792-98 steel N / cm 95 primed steel N / cm 120 对 PE N / cm 80