Cold tapes - Huayi

Cold tapes - Huayi polyethylene anticorrosion tape substrate and layer composed of polyethylene corrosion industrial adhesive tape. Mainly used in petroleum, natural gas pipeline transmission; outer surface corrosion chemicals, urban construction, water supply and drainage, and gas transportation and other buried steel pipeline, with easy construction, no pollution. Polyethylene anticorrosion tape since the 1960s in the oil and gas steel pipe widely used as an external anti-corrosion materials has been 40 years of history, due to the construction of its excellent corrosion resistance properties and convenient, making it occupy in pipeline corrosion material system certain status. And because polyethylene anticorrosion tape production enterprises continuously improve and enhance the variety and quality polyethylene tape, so that applications polyethylene anticorrosion tape expanding. Composition: base film and the layer composed of two parts, the base film is a polyethylene film, adhesive layer of butyl rubber, has good mechanical strength and adhesive sealing performance. Their role can be divided preservation zone (in-band), protective tape (outer band), mending tape. According to the coating grade requirements are divided into general level, strengthening the level and especially to strengthen the level. Construction grade and corrosion structures and methods: a total thickness of the coating grade (mm) coating structure common level ≥0.70 inner layer with a layer of primer + + layer packed strengthen the level ≥1.40 inner layer with a layer of primer + (lap 50 to 55% of the tape width) + layer of packed (50 to 55% of the lap belt width) Advantages of polyethylene tape wrapped around the cold layer thickness and wide adaptability; polyethylene tape wrapped around the cold has excellent adhesion and elasticity, the coating can accommodate thermal expansion and contraction pipe; polyethylene tape wrapped around the cold heat aging resistance, strong UV resistance; polyethylene tape wrapped around the cold high tensile strength, elongation at break rate appropriate to facilitate mechanization and manual winding. Products using steel surface treatment: rust, welding slag, burrs, oil composition, manual rust of St3 level, sand-blasting of Sa2 grade; brushing primer: A, B component Stir with a brush or roller Brushing evenly; an overlap: After the primer surface dry (general 5-10min) can be an overlap. Transportation polyethylene cold tapes should be stored in a cool environment 5 ℃ -30 ℃ storage, away from heat and flame; polyethylene cold tapes in transit anti-exposure, rain, anti-extrusion; polyethylene tape wrapped around the cold by long bursts frozen below 5 ℃, the need to be stored at about 20 ℃ 48 hours, before use.