Scaffold tube diameter is normally quoted as the outside diameter, because the coupler must clamp around the tube’s exterior. Wall thickness is a separate specification that affects the tube section and cannot be guessed from the outside measurement. The material, length, finish, manufacturing tolerance and intended scaffold configuration also belong in the purchase order. Tianjin Easy Scaffolding’s internal tube card lists outside diameters of 48.3, 48.6 and 60.3 mm, wall thicknesses from 1.8 to 4.0 mm and lengths from 1 to 6 m. These are historical range notes, not a statement that every combination is currently stocked or suited to every coupler. For a bulk buyer, the key is to match the actual tube and fitting drawings to the project layout. This guide gives five specification checks before requesting a quotation.
A galvanised scaffold plank uses a zinc coating to protect its steel surface; a painted plank relies on a different barrier coating. Neither finish replaces checks on board design, hook fit, load data or condition. For outdoor purchasing, compare the exact coating process, coverage at cut edges and welds, handling damage, maintenance plan and total project use. “Galvanised” is too broad to specify an order by itself: a plank made from pre-galvanised sheet is not the same purchasing description as a completed plank hot dip galvanised after fabrication. Tianjin Easy Scaffolding’s internal range notes list hot dip galvanised, pre-galvanised and painted steel planks, but buyers should confirm which finish is offered for the selected SKU. This article gives a five-point finish review that distributors and contractors can use alongside the platform’s structural and dimensional requirements.
A hook-on scaffold plank has formed ends designed to engage a particular support; a plain steel plank relies on a different bearing and restraint detail. The right choice is the one specified for your scaffold system and bay, not the one with a more convenient product name. Check the hook profile or plain-end bearing, the support transom, the locking detail and the manufacturer’s span information before ordering. Ringlock, Kwikstage and frame scaffolding can use different platform support arrangements, even when the boards have similar nominal widths. A plank that rests on a member is not necessarily secured against movement or lift-off. This guide compares the two end styles and gives buyers a five-step fit review. It also explains what to send a supplier when matching new boards to an existing scaffold fleet.
A ringlock rosette connection joins a ledger or diagonal brace to a vertical standard at a welded node. The fitting at the member’s end seats on the rosette, and a wedge pin secures the connection. That simple sequence is useful for quick erection, but a fitted-looking joint is not enough to establish that parts are compatible or fit for reuse. Check the rosette, weld, ledger head and wedge before assembly, then inspect the complete scaffold according to the project plan. A connection also has to work with the intended bay geometry, brace arrangement and loading. This guide explains the parts, the assembly principle and seven practical inspection points for buyers and site teams. It does not assign a safe working load to an individual joint; that value must come from the manufacturer’s data for the specified system and configuration.