... stainless steel heavy duty commercial glass door hinges for glass folding door SA8500H-7 1)1. Material: SUS 304 stainless steel ... that special in producing sliding door ,swing door,moving gate,folding door ,glass hinge,spider,handle lock patch fitting,and floor ... rollerSalt spray test machineCorrosion resistant: check cladding material with test machine, the test pass at least 24 hours later, then it ...