What do the letters FC, IWS and IWR in the hemp core of steel wire rope mean?

What are the differences in models of steel core or asbestos core used in special environment? What is the meaning of FC, IWS and IWR in 6x19w + FC, 6x19 + IWS and 6x19 + IWR models, and what is the meaning of fi in some models? FC represents fiber core, IWS represents wire rope core, IWR represents wire strand core, fi represents filled type, s represents Xilu type, and W represents Wallington type

▲ 6x37s + FC6 * 37 indicates that the steel wire rope is composed of 6 strands, with 37 steel wires per share. S indicates that the thickness of each steel wire is different, and each layer of steel wire is arranged according to the thickness. FC indicates that the steel wire rope is hemp core, that is, the contact of fiber core wire is mainly the arrangement of thick and thin wires. Increase the contact between steel wire and steel wire, and the steel wire is round strand The surface contact is mainly that the steel wire is not round strand steel wire, but special-shaped, such as trapezoid, oval, etc. the steel wire is in full contact with the steel wire to increase the wear-resistant friction force. Most of them are non rotating steel wire ropes, which are mainly used for vertical shaft hoisting and high-altitude hoisting In the market, it is generally point contact rope, 6 * 37 or 6 * 19, with strength of 1670. Steel wire ropes with different structures and strength can be selected according to different application occasions

▲ wire rope model "6W (19)- Φ 17.5-155-i-guang-youjiao "what does it mean? Wallington type steel wire rope is composed of 6 strands. There are about 19 steel wires in each strand, which are thick and thin; Φ 17.5 - the diameter of steel wire rope is 17.5mm155 - the nominal tensile strength of steel wire rope, 155 refers to 155 kgf / mm2, which should be close to the level of 1570mpa in the current standard; I - refers to that the mechanical property level of the steel wire in the steel wire rope is level I (one is Roman numeral one). Light - the surface of the steel wire rope is the right intersection of the smooth surface - the twisting mode of the steel wire rope is the right interaction