GINDIN: продукция Bridon-Bekaert (Брайдон) в России

Steel Rope Technical Information 64 Compacted Rope: Rope which is subjected to a compacting process after closing, thus reducing its diameter. Solid Polymer Filled Rope: Rope in which the free internal spaces are filled with a solid polymer. The polymer extends to, or slightly beyond, the outer circumference of the rope. Cushioned Rope: Stranded rope in which the inner layers, inner strands or core strands are covered with solid polymers or fibres to form a cushion between adjacent strands or layers of strands. Cushion Core Rope: Stranded rope in which the core is covered (coated) or filled and covered (coated) with a solid polymer. Solid Polymer Covered Rope: Rope which is covered (coated) with a solid ploymer. Solid Polymer Covered and Filled Rope: Rope which is covered (coated) and filled with a solid polymer. Rope Grade (R r ): A number corresponding to a wire tensile strength grade on which the minimum breaking force of a rope is calculated. Note: It does not imply that the actual tensile strength grades of the wires in a rope are necessarily the same as the rope grade. Preformed Rope: Stranded rope in which the wires in the strands and the strands in the rope have their internal stresses reduced resulting in a rope in which, after removal of any serving, the wires and the strands will not spring out of the rope formation. Note: Multi-layer stranded ropes should be regarded as non- preformed rope even though the strands may have been partially (lightly) preformed during the closing process. Rope Class: A grouping of rope constructions where the number of outer strands and the number of wires and how they are laid up are within defined limits, resulting in ropes within the class having similar strength and rotational properties. Rope Construction: System which denotes the arrangement of the strands and wires within a rope, e.g. 6x36WS, 6x19S, 18x7, 34xK7. Note: K denotes compacted strands. Cable-laid Rope: An assembly of several (usually six) single layer stranded ropes (referred to as unit ropes) laid helically over a core (usually a seventh single layer stranded rope). Braided Rope: An assembly of several round strands braided in pairs. Electro-mechanical Rope: A stranded or spiral rope containing electrical conductors. Strand and Rope Lays Lay direction of strand: The direction right (z) or left (s) corresponding to the direction of lay of the outer layer of wires in relation to the longitudinal axis of the strand. Lay direction of rope: The direction right (Z) or left (S) corresponding to the direction of lay of the outer strands in relation to the longitudinal axis of a stranded rope or the direction of lay of the outer wires in relation to the longitudinal axis of a spiral rope. Ordinary lay: Stranded rope in which the direction of lay of the wires in the outer strands is in the opposite direction to the lay of the outer strands in the rope. Right hand ordinary lay is designated sZ and left hand ordinary lay is designated zS. Note: This type of lay is sometimes referred to as ‘regular’ lay. Lang’s lay: Stranded rope in which the direction of lay of the wires in the outer strands is the same as that of the outer strands in the rope. Right hand Lang’s lay is designated zZ and left hand Lang’s lay is designated sS. Alternate lay: Stranded rope in which the lay of the outer strands is alternatively Lang’s lay and ordinary lay. Right hand alternate lay is designated AZ and left hand alternate lay is designated AS. Contra-lay: Rope in which at least one inner layer of wires in a spiral rope or one layer of strands in a stranded rope is laid in the opposite direction to the other layer(s) of wires or strands respectively. Note: Contra-lay is only possible in spiral ropes having more than one layer of wires and in multi-layer stranded ropes. Rope lay length (Stranded Rope): That distance parallel to the axis of the rope in which the outer strands make one complete turn (or helix) about the axis of the rope. Cores Core: Central element, usually of fibre or steel, of a single layer stranded rope, around which are laid helically the outer strands of a stranded rope or the outer unit ropes of a cable-laid rope. Fibre core: Core made from natural fibres(e.g. hemp, sisal) and designated by its diameter and runnage. Synthetic Core: Core made from synthetic fibres (e.g. polypropylene) and designated by its diameter and runnage. Steel core: Core produced either as an independent wire rope (IWRC)(e.g. 7x7) or wire strand (WSC)(e.g. 1x7). Solid polymer core: Core produced as a single element of solid polymer having a round or grooved shape. It may also contain internal elements of wire or fibre. Insert: Element of fibre or solid polymer so positioned as to separate adjacent strands or wires in the same or overlying layers and fill, or partly fill, some of the interstices in the rope. (see Zebra) Rope Terminology BRIDON Oil and Gas