base collar just like the starter component of ringlock system. it is made by two pipes with different outer diameter. it sliped on the hollow jack base by one side and another side as a sleeve to connected ringlock standard. base collar make the whole system more stable and also is the important connector between hollow jack base and ringlock standard.
octagonal plate/rosette is one of important accessories for ringlock system. from the round shape we also call it as ring. usually the size is od122mm and od124mm , and thickness is 10mm.
diagonal brace head is riveted on diagonal brace and connected or fixed with standard by wedge pin.
our items ringlock scaffolding base collars/ledger head/cross head/octagonal plate passed the test report of en12810&en12811, bs1139 standard