Strut channels are commonly used to support cable trays due to their modular nature and ease of adjustment. This brings about an issue known as galvanic corrosion. One of the. TechLine Manufacturing provides engineered cable tray systems and electrical/instrumentation supports for the full spectrum of oil & gas infrastructure — from offshore platforms and coastal processing plants to pipelines, compressor stations, and refineries. Cable tray laying to take care of necessary clearances for the fire proofing of structure.