Tubular scaffolding is constructed with tubes and couplers for the purpose of providing working platforms. These scaffolds are infinitely adjustable in height and width. Tubular scaffoldings are frequently used where obstructions or non-rectangular structures are encountered. They can also be used for irregular and circular vertical configurations. Tubular scaffolding is the most versatile scaffolding system on the market. With movable couplers it is possible to adjust the system to any conditions, creating different distances between the elements. All tubes and couplers comply with Singapore standard SS 311 : 2005 – Specification for Steel tubes and fittings used in tubular scaffolding.