Compare with others,we have more advantages High rigid structure Large loading cap. Easy to adjust the saddle Antidropping the technical spec of standard light duty welding manipulator is as following list. ModelHC1212HC2020HC3030HC4040HC5050Effective extension stroke (mm)12002000300040005000Boom extension speed (mm/min)120-1200Effective vertical stroke (mm)12002000300040005000Boom elevation ...