Aluminum and hot-dip galvanized steel are the two dominant materials for solar mounting structures, each suited to a different combination of structure type and site conditions — aluminum’s light weight and natural corrosion resistance favor rooftop and rail-based systems, while steel’s structural efficiency favors large ground mount and carport frameworks. This guide compares the two materials by weight, corrosion resistance, strength and cost, helping EPC contractors and procurement teams match material choice to their project’s actual structural and site requirements rather than defaulting to one material across every project type.

SS304, SS316 and HDG each solve a different corrosion problem for cable tray — HDG offers the lowest-cost solution for general atmospheric exposure, SS304 fits hygiene-sensitive and moderate-corrosion settings, and SS316 is reserved for coastal, offshore and chemical-processing sites where chlorides and acids would degrade the other two faster. This guide explains how to match material grade to actual site conditions, helping EPC contractors and procurement teams avoid both premature corrosion from under-specifying and unnecessary cost from over-specifying.

KBG, JDG, and SC are three Chinese galvanized conduit classifications that overseas buyers frequently see on quotations but rarely recognize, each built around a different wall thickness and connection method rather than being interchangeable grades of the same product. This guide explains what each type is designed for — KBG for concrete-embedded installation, JDG for serviceable surface-mounted wiring, and SC for heavy-duty threaded outdoor runs — and maps each to the closest international equivalent (EMT, IMC, RMC) buyers already know, helping procurement teams specify the right conduit type and avoid a connection-method mismatch discovered only after the shipment arrives.