Prestressed Galvanized Steel Strand

Manufacturing process of steel strand
The manufacturing process of steel strands is divided into three parts:
The first part is monofilament manufacturing, usually according to the needs, using raw materials such as stainless steel wire rods, high carbon steel or low carbon steel wire rod for cold drawing processing to obtain monofilament of corresponding specifications, if the coating is required, then coating processing is performed on the monofilament.
The second part is the manufacture of stranded wires. The prepared monofilaments are stranded into steel strands of corresponding specifications with a stranding machine. The prestressed steel strands also need to be stabilized after forming.
The third part is packaged and formed. In order to facilitate transportation and use, it usually leaves the factory in two packaging forms: shaftless roll and spool.
Technical Parameter

Dia(mm)	Tensile Strength(Rm/MPa)	Max strength for hole wire(Fm/kN)	StipulatedNominal Non proportional extension rate(Fp0.2/kN)	Cross section size(mm2)	Approximate weight(g/m)	Tolerance(mm)
12.7	≥1860	≥185.1	≥166	98.7	775	+0.4~-0.2
15.2	≥1860	≥262.5	≥235	150	1178	+0.4~-0.2
12.8	≥1860	≥358	≥318	191	1500	+0.4~-0.2

Precautions for using steel strand
1. It is strictly forbidden to use any form of heating and deformation measures in the use of prestressed steel, so as not to reduce the mechanical properties of prestressed steel
2. Welding is strictly prohibited during use, because the strength of the solder joint is much lower than that of the steel itself, and it is easy to cause wire breakage at the solder joint during tension.
3. The cutting of prestressed steel should use toothless data (grinding wheel card). The use of electric and gas welding cutting is easy to damage the surface around the steel. At the same time, it causes local heating at the end, which significantly reduces the performance.
4. When the prestressed steel wire adopts circular reinforcement, its bending radius shall not be less than 3 times the diameter of the steel wire.

Shaanxi Zhongtuo Mining Equipment Co., Ltd. was located in the ancient city of Xi'an in 2005. The company focuses on the production and development of intelligent equipment, focusing on mining equipment, splitting equipment, prestressing equipment, drilling, and rock drilling equipment, shotcrete grouting equipment, and road equipment! The products are used in bridge construction, tunnel subway construction, mining, and hydropower new energy projects.

Zhongtuo business scope covers drilling rigs, bridge tension jacks, diamond saw machines, mud pump machines, mortar spraying machines, dry-mixed shotcrete machines, high-pressure grouting pumps, rebar processing machines, rock splitters, pavement machinery, rescue tools, and so on.

Business Purpose

Shaanxi Zhongtuo Mining Equipment Co., Ltd. was founded with "credibility first, service and thoughtful" as the purpose of the enterprise, the spirit of "honesty, openness, hard work, innovation" spirit of enterprise, adhering to the scientific development, the quality of survival, to serve the credibility of the guiding principles. 

Prospect Future

Become a world-class mine equipment development manufacturer and service provider; "perfect quality, boutique concept, in-depth development, customer first" credo to build the brand and the future; Honesty, seeking economic and social unity, pioneering the development of the times.