Black Annealed Hollow Section

585 black annealed hollow section products are offered for sale by suppliers on Alibaba.com, of which welded steel pipes accounts for 58%, other steel pipes accounts for 25%. A wide variety of black annealed hollow section options are available to you, such as structure pipe, fluid pipe and gas pipe.You can also choose from hot rolled, hot dipped galvanized and cold rolled black annealed hollow section,As well as from non-alloy, is alloy black annealed hollow section, and whether black annealed hollow section is non-oiled, slightly oiled, or heavy oiled.