Profile: Santram Traders specializes in engineering solutions. We offer architectural & finishing works, PVC pipes & fittings, TMT bars, cover blocks, and PVC casing. Aggregates are inert granular materials such as sand, gravel, or crushed stone that, along with water and cement, are an essential ingredient in concrete. Aggregated materials are typically used as fillers or as an alternative to gravel or sand as a replacement for gravel.