Specification For Tubing and Coupler ScaffoldingBy pinpond / August 28, 2024 – If the material is not proper then the scaffold could be a failure, – The material specification is essential for scaffold Specification For Tubing and Coupler Scaffolding: – Scaffold pipe – 40NB (Nominal Bore) – Diameter (Outer diameter of scaffold pipe) – 48mm – Thickness of scaffold pipe – 4mm – Maximum length of scaffold pipe – 6mm For Heavy Duty: – 50mm diameter scaffold pipe should be used instead of 48mm diameter.