Heat-shrinkable tubing, heat shrinkable sleeve is seamless whole structure, also called dead heat shrinkable sleeve, heat shrinkable sleeve closed, pipe heat shrinkable fill muzzle. Heat shrinkable sleeve for hot melt adhesive intermediate layer, the outer layer of improvement of radiation cross-linked polyethylene. Heat shrinkable sleeve (HHTS) for underground and overhead weld steel pipe corrosion and insulation pipe insulation mending seal and design, but also for the overall heat shrinkable sleeve at the elbow pipe corrosion. Mainly used for oil and gas transmission pipeline corrosion and thermal insulation at the pipeline weld, heat-shrinkable tubing can also be used for pipe flange joints, lock hoop parts of the seal preservative. Installation is simple, saving time and labor when fast. Heat shrinkable sleeve is a composite substrate by radiation cross-linked polyolefin hot melt adhesives and special seals made of special sealing hot melt adhesive and polyethylene substrate, the steel surface and solids epoxy coating can form a good bond (three PE preservative). Shrink sleeve heating, heat shrink sleeve grassroots contraction, glue melted, closely covered in shrink fill the mouth, heat shrinkable sleeve with the original pipeline coating to form a solid, continuous corrosion body. Corrosion resistance, abrasion resistance, impact resistance, UV and photo-aging properties. Implementation of the standards:? SY / T0413-2002 and SY / T4054-2003 1. product structure described heat shrinkable sleeve, the inner layer of epoxy primer coated steel surface, the middle layer of hot melt adhesive, the outer improvement of radiation cross-linked polyethylene. 2 Features heat-shrinkable tubing is seamless casing overall structure of the main pipeline with a sub-mending corrosion, valve seals. Product has good adhesive properties acid corrosion, shrink so fast sealing performance, wide range of applications, easy installation, saving time and labor efficient, low preheat temperature (50 ℃) and so on. 3 Product Applications product is suitable for all kinds of pipe anti-corrosion coatings such as: two polyethylene (2PE), three layers of polyethylene (3PE), powder epoxy (PBE), insulation jackets, coal tar enamel, oil and bitumen. 4 product specifications before and after model number Model Specification shrink inside diameter inner diameter of the material length contraction using diameter 1 HHTS100 / 45/500 100 45 500 φ57 2 HHTS 130/60/500 130 60 500 φ76 / 89 3 HHTS 155/75/500 155 75 500 φ108 / 114 4 HHTS 210/100/500 210 100 500 φ159 5 HHTS 220/100/500 220 100 500 φ168 6 HHTS 270/130/500 270 130 500 φ219 7 HHTS 290/140/550 290 140 550 φ245 8 HHTS 320/150/550 320 150 550 φ273 9 HHTS 350/170/550 350 170 550 φ299 10 HHTS 375/180/550 375 180 550 φ325 11 HHTS 410/200/500 410 200 550 φ351 12 HHTS 440/210/600 440 210 600 φ377 13 HHTS 537/260/600 537 260 600 φ457 14 HHTS 595/280/600 595 280 600 φ529 15 HHTS 700/330/600 700 330 600 φ630 16 HHTS 800/380/600 800 380 600 φ720 17 HHTS ? 1600/800/600 1600 800 600 φ1200 18 HHTS 2000/800/600 2000 800 600 φ1600 Note: according to customer requirements, production of the corresponding product specifications.