Prestressed Steel Strand, Galvanized Steel Strand (for power) and stainless steel strand, of which the prestressed steel strand is called unbonded steel strand after being coated with anti-corrosive grease or paraffin and then coated with HDPE. The prestressed steel strand is also made of galvanized or galvanized aluminum alloy Steel Wire.
(2) Classification according to material characteristics
Steel strand, aluminum clad steel strand and stainless steel strand.
(3) Classification by structure
The prestressed steel strand can be divided into 7 wires, 2 wires, 3 wires and 19 wires according to the number of wires, and the most commonly used is the 7-wire structure.
Galvanized steel strand and aluminum-clad steel strand for power are also divided into 2, 3, 7, 19, 37 and other structures according to the number of steel wires, and the most commonly used is the 7-wire structure.
(4) Classification by surface coating
It can be divided into (smooth) steel strand, galvanized steel strand, epoxy coated steel strand, aluminum clad steel strand, copper coated steel strand, plastic coated steel strand, etc
