two. Fitted with top pressure cable and bottom galvanized chain which equally increase the tensile energy on the boom. Disadvantages: Although comprised of long lasting materials, they could puncture and deflate. Usually more intricate to deploy. Normally the most expensive boom style. Properly, not! On this page we’ll investigate https://www.duratarpaulin.com/product-category/pvc-tarpaulin-manufacturer/pvc-oil-boom-material/