a new type of selflock tubular scaffolding system,which gradually replaces other scaffolding systems due to the following features: 1. This kind of scaffolding is a new product of early stage of 21 century. It is widely used in Asia and Africa countries right now 2.Heavy duty and quick to install and disassemble due to its simple structure and unique design components. 3. Different lengths of standards and ledgers can be made as customer's need to suit different sizes of metal concrete formwork. 4. This kind of quicklock scaffolding can be used for both inside and outside construction. It has very good bearing capacity and very good stability