Finalizing waterproof cap is a kind of heat-shrinkable waterproof cap, which is the main material used for anti-corrosion at pipe joints (pipe joints of different sizes or insulation pipe ends).Finalize the waterproof cap is a kind of polyethylene material treated by high-energy ionizing radiation, cap shaped appearance, by the polyethylene pipe expansion after molding by one layer of hot melt adhesive film, waterproof cap has high mechanical strength, aging resistance, environmental stress cracking resistance, sealed performance is good wait for a characteristic, has a long service life, the product is suitable for all kinds of polyurethane foam insulation pipe end waterproof and protection.The appearance of waterproof cap solves the problem of waterproof and protection of insulation pipe end!In addition, the shaped waterproof cap is corresponding to the unshaped waterproof cap.Relatively speaking, finalize the design waterproof hat construction is simple but the production technology is complex, the cost is also higher than the finalize the design waterproof hat.Construction method:Put the waterproof cap on the end of the steel tube to remove the foam powder and remove the rust to ST3. Sand cloth should be used to clean the greasy places.2. Clean and fluff the big head of the waterproof cap where it overlaps the jacket.3. Preheat the steel pipe and the wool jacket.(in the case of does not affect the original coating preheat temperature should be up to 50 ℃).4. Slip the waterproof cap in5. Heat and shrink the big head of the waterproof cap along the circumference evenly with the heater until the hot melt glue overflows.(if the temperature is high, the head will slip when heated. Wet towel can be used to cover the head).6. The end of the waterproof cap (attached to the foam) shall not be over-heated.7. Heat the tip of the waterproof cap until the hot glue overflows.When the shrinkage is complete, roll the waterproof cap with a press rod.8. After the completion of construction, there shall be no bubbles, no surface carbonization and obvious folds, and all edges shall have glue overflow and firm bonding.Storage method:Waterproof cap is strictly prohibited from heavy weight, insolation, rain, and contact with grease, solvents and other harmful substances, should be stored in a cool and dry place, should be away from heat, storage period of 18 months.