1, the use of prestressed steel is prohibited in any form of heating deformation measures, so as to avoid the mechanical properties of prestressed steel.
2, the use of welding is strictly prohibited, due to the strength of the solder joint than the strength of the steel itself, a lot of tension, easy to cause the solder joints in the broken wire.
3, prestressed steel cutting should use no tooth according to (grinding wheel card). The electric welding and gas welding cutting to make the steel around the surface damage. At the same time, the end part of the heating, so that the performance was significantly decreased.
4, the prestressed steel wire with circular rib, the bending radius should not be less than 3 times the diameter of the steel wire.
5, non - axis winding package of steel wire should be in the state of the line from the inner ring tap, out of the steel wire spring, and automatic extension. Direction: after the tap tap direction of spiral spring shaped and strand twist, twist or otherwise play disorderly lines.
6 strand twist to the general left twist, the right twist should be specified in the contract, or directly affect with anchorage.
7, prestressed steel wire heading quality is good or bad and the wire itself the quality does not have direct relation, but high strength will be detrimental to the quality of the head of the steel forging, so when you select heading anchor should be to our company in the order description.