双壁热缩套管（3：1、4：1）一种内层附有热熔胶的半柔性热缩管。外层是由辐射交联聚烯烃组成，内层是专门设计的胶性内壁；加热时内壁熔融，并随外壁收缩填充孔隙或缝隙，冷却后，双壁管壁厚均匀、坚实。广泛应用于电子设备的接线防水，电线分支处的密封固定，金属管线的防腐保护，以及防止由高分子链松弛产生的松动和脱落，如水下灯饰、汽车油管、高级线束等。通过UL224认证.常用颜色：红、橙、黄、蓝、绿、白、黑(常用)
Flame-retardant double-wall heat-shrinkable tubing:

A kind of semi-flexible inner layer with hot melt adhesive heat-shrinkable tubes. The outer layer is formed by radiation cross-linked polyolefin inner layer is a specially designed plastic nature of walls; heated walls melt, and filled with the outer shrink pores, or cracks, after cooling, double-wall pipe wall thickness uniform, solid. Are widely used in electronic equipment wiring waterproofing, sealing wire branch, fixed, metal pipeline corrosion protection, and to prevent relaxation of the polymer chain generated by the loose and fall off, such as water under the lighting, automotive tubing, wiring harness and other high-level. By UL224 certification. Commonly used colors: red, orange, yellow, blue, green, white, black (common)

温度范围
•连续使用温度：-55℃～125℃
•最低起始收缩温度：80℃
•最低完全收缩温度：120℃