... modify or extend. ♥ Available in galvanized or plain steel, aluminum or stainless steel. ♥ Can be painted or coated with fusion bonded ... to reduce field labor costs. G). Besca Cable Tray Material: Q235 Steel (Chinese standard steel), SS304, SS316 & SS316L,FRP or GRP,Aluminium alloy ... 60 and 80 microns thick♦ Electrolytic Polishing – for stainless steel use I). BESCA Cable Tray Standard Size: Part No. ...