... etc APPLICATION Guardrails, ventilation ducts, gutters and down spouts, Pre-paint and post paint applications, gutters and down spouts, ... vending machines, refrigerators, ovens, for pre-paint. structural use, roofing, commercial use …etc Electrical appliances, roofing, partitions. Factory buildings, elevator panels… ... talking business.4. CertificateCorrugated steel plate zinc corrugated roofing sheet