6WHHO /DGGHU type cable tray shall be 3-3/8, 4, 4-1/2, 6 , or 7 deep channels mill galvanized (ASTM A-653 G90),hot dip galvanized after fabrication steel (ASTM A-123), 304 stainless steel, or 316 stainless steel. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. The galvanization process is the primary anti-corrosion treatment for cable trays. The quality of the zinc coating directly determines the tray's service life and application scenarios. The following provides a comprehensive explanation, covering standards, ranges, testing, and special application. , ABB offers steel cable tray with pre-galvanized and hot-dip galvanize lvanization is an economical and effective way to protect steel ag tal, naturally oxidizes when exposed to air, but at a much slower rate than steel. Learn when to choose hot-dip galvanized steel cable trays according to EN ISO 1461: advantages, recommended environments and key design criteria for long-lasting installations. In many industrial. HUFE CABLE TRAYS; USED WITH HM SERIES MODULES. Product weights may vary ± % 10.