| Couplers are the fittings which hold the tubes together. The most common are called scaffold couplers, there are three basic types: right-angle couplers, putlog couplers and swivel couplers. To join tubes end-to-end joint pins (also called spigots) or sleeve couplers are used, or both together. Only right angle couplers and swivel couplers can be used to fix tube in a 'load bearing connection'. Single couplers are not load bearing couplers and have no design capacity.Tubes are in steel Q235JRH, they are either 'black' or galvanised. The tubes come in a variety of lengths and a standard diameter of 48.3mmx3,25mm: a greater flexibility and so less resistance to force. Tubes are generally bought in 6000mm lengths but can be delivered to certain typical sizes |
