(1) Categorized by use

Pre-stressed steel stranded wire, galvanized steel stranded wire for electrical use, and stainless steel stranded wire, among which pre-stressed steel stranded wire coated with anti-corrosion grease or paraffin and then wrapped with HDPE is called unbonded pre-stressed steel stranded wire (unbonded).Pre-stressed steel strand, also known as nded steel strand, is available in galvanized or galvanized aluminum alloy steel wire.

(2) Categorized by material characteristics

Steel stranded wire, aluminum-clad steel stranded wire, and stainless steel stranded wire.

(3) By structural classification

Pre-stressed steel strand is divided into 7-wire, 2-wire, 3-wire, and 19-wire types, with the 7-wire structure being commonly used.

Galvanized steel strand and aluminum-clad steel strand for electrical use are also categorized by the number of wires, such as 2, 3, 7, 19, 37, etc., with the 7-wire structure being commonly used.

(4) By Surface Coating Classification

It can be divided into smooth steel stranded wire, galvanized steel stranded wire, epoxy-coated steel stranded wire, aluminum-clad steel stranded wire, copper-plated steel stranded wire, and sheathed steel stranded wire, etc.