A locked coil wire rope includes a circular steel wire inner layer, a central metal core, and a Z-shaped steel wire outer layer. The central metal core has a structure of 119W, 119S, 126WS, 131WS, 131SW, 149SWS or 155SWS. The circular steel inner layer includes at least two circular steel wire layers, and a number of steel wires of circular steel wire layer is no less than 18. The Z-shaped steel wire outer layer includes at least one Z-shaped steel wire layer, and a number of steel wires of the Z-shaped steel wire layer is no less than 51. A capacity expansion framework is further disclosed.

A pre-stressed concrete structure comprises a steel wire or a steel strand. The steel wire or steel strand has been pre-tensioned before curing of the concrete or grout. The steel wire or steel strand is provided with a zinc coating. The zinc coating has a weight ranging between 70 g/m.sup.2 and 950 g/m.sup.2. The steel wire or steel strand has an outer surface that is provided with indentions to provide mechanical anchorage points in the concrete structure. The steel wire or steel strand is further provided with a passivation layer in the form of a metal oxide layer.

A locked coil wire rope includes a circular steel wire inner layer, a central metal core, and a Z-shaped steel wire outer layer. The central metal core has a structure of 119W, 119S, 126WS, 131WS, 131SW, 149SWS or 155SWS. The circular steel inner layer includes at least two circular steel wire layers, and a number of steel wires of circular steel wire layer is no less than 18. The Z-shaped steel wire outer layer includes at least one Z-shaped steel wire layer, and a number of steel wires of the Z-shaped steel wire layer is no less than 51. A capacity expansion framework is further disclosed.

A cable includes a core with a plurality of first wires made of carbon steel and a plurality of strands surrounding the core. Each strand includes a plurality of second wires made of stainless steel. The cable has a maximum cross-sectional dimension less than 2 millimeters.

A method for fabricating a wire strand from parallel steel wires for a main cable of a suspension bridge, the method including: 1) selecting and coloring a steel wire as a marking steel wire which is to be positioned at a vertex of a wire strand including a plurality of parallel steel wires and having an equilateral polygon section; 2) drawing position markers at positions of the standard steel wire corresponding to control points of splay cable saddles, center points of main cable saddles, middle points of side spans, a middle point of a middle span, and starting points of anchor heads of anchor spans of a suspension bridge; 3) relaxing and shaping coils of the steel wires to yield a prefabricated wire strand; 4) preforming the positions of the cable saddles; 5) coiling the wire strand including; and 6) casting anchor of the wire strand.

According to embodiments of the present invention, a stranded conductor is formed in which the occurrence of defects, such as strand unevenness of filaments and outward protrusion of filaments, is inhibited. According to embodiments of the present invention, a stranded conductor (1a) includes soft filaments (2a) stranded together. The soft filaments (2a) include a soft filament made of an aluminum material, disposed along a center (101), and include six soft filaments, twelve soft filaments, and eighteen soft filaments made of an aluminum material, disposed around and concentrically with the center. The filaments are softened filaments that are softened. A lay length (Pa) is from 6.2 times to 15.7 times a conductor diameter of the stranded conductor.

Provided is an elastomer reinforcement cord in which the problem of stress concentration at an interface between an elastomer and a metal cord is solved and the durability is thereby improved. The elastomer reinforcement cord includes metal filaments (1a) and (1b), and a polymer material (3) having a melting point or softening point of 80 C. to 160 C. The elastomer reinforcement cord has a core (11) and at least one sheath layer (12). In a region surrounded by a line connecting the centers of the metal filaments constituting the outermost sheath layer at a cross-section in a direction orthogonal to an axial direction after vulcanization, when a region occupied by other than the metal filaments is defined as a gap region, the polymer material is contained in this gap region, and a filling rate, which is a ratio of the area of the polymer material, is higher than 120%, taking the area of the gap region as 100%.

Provided is a cable lock including a locking clasp including first and second clasp components having first and second security cable connection arms. The locking clasp includes at least one groove. The at least one groove is configured to receive at least one device cable. The cable lock includes a security cable having a wire rope and a vinyl coating. The wire rope includes a plurality of wire strings arranged in a plurality of clusters. The first and second security cable connection arms of the locking clasp are coupled to a first end of the security cable. First and second stop sleeves are disposed on opposite sides of the first and second security cable connection arms. A device connection means is disposed at a second end of the security cable opposite the first end of the security cable.

A steel strand (10) comprises a steel core wire (12). This steel core wire (12) is surrounded by steel layer wires (14) that are twisted around the steel core wire (12). The steel core wire (12) is covered with a thick corrosion resistant core coating (16) provided by strip cladding or by metal extrusion. The steel layer wires (14) are covered with a thin corrosion resistant layer coating (18) provided by a hot dip operation or by an electroplating or chemical plating process. The steel strand (10) is compacted so that said steel layer wires (14) have a non-circular cross-section and that the thick corrosion resistant core coating fills the interstices between the steel core wire (12) and the steel layer wires (14) in order to give the steel strand (10) an improved corrosion resistance and increased lifetime.

Disclosed are a metal wire, a manufacturing method therefor, and a tire. The metal wire is made by twisting a filament; an outer peripheral surface of the filament is covered with a CuMZn alloy coating; the outer peripheral surface of the filament is also covered with a CuZn alloy coating; the metal wire is made of at least one filament; an area covered by the CuMZn alloy coating is 10%-90% of an area of the outer peripheral surface of the filament, and the rest is the CuZn alloy coating; M in the CuMZn alloy coating is selected from one or two of Co, Ni, Mn, or Mo; the mass fraction of Cu in the CuMZn alloy coating is 58%-72%, the mass fraction of M in the CuMZn alloy coating is 0.5%-5%, and the balance in the CuMZn alloy coating is Zn and inevitable impurities.