The Heavy-Duty Fireproof Cable Tray Elbow is a critical turning component in heavy-load cable tray systems, combining high load-bearing capacity with fire-resistant and flame-retardant performance. Conduit fittings used in electrical conduit system from the overhead service entrance to machinery, and apply to many areas such as construction site or metro transit system. Q1: What materials are your cable trays made from? * Pre-galvanized Steel / GI: Cost-effective with good durability. * Stainless Steel (304 & 316): Excellent for extreme corrosion resistance (e. 5 TRAY ANGLE:HL4:HORIZONTAL45。 ELBOWNEW SUNPLN TECHNOLOGY INDUSTRIAL CO.