空心套筒 meaning in English

zentrierhuelse

The roundsling inner core is made from high tensile polyester fibre which is wound continuously without a join to provide the maximum possible strength . this core is protected by a tough woven tubular sleeve also made from polyester without side stitch . it serves to protect both the inner core of the sling and the surface of the product which it is lifting
此产品的内层用极抗拉的合成纤维制成，在制作过程中采用不停绞织，无结口，使其具有极强的抗拉力，成空心套筒状，两边无缝痕迹，在吊装时，对吊带的里外层还能起到保护作用。