JAW—1250KN [used by standards of British computer control electro-hydraulic dynamic servo compression testing machine for well cover. (comply with Europen standard EN124)
JAW—2000, 2000KN; [comply wioth Europen standards] computer control electro-hydraulic dynamic servo compression multifunctional testing machine for well cover.
JYS—20; 20KN loading of inspecting well testing devices
GB/T23858---2009 manhole cover can be devided into manhole and non-manhole; specification manhole like 600mm, 700mm, 800mm, 900mm according net hole size of well seat; [BS EN124: 1994 cover plate of down drains and manhole coverof area for vehicle and passerbys, designing requirment, type of test, signing, quality controlling] europen standards/ taking on the position of British standards.
