... treats.it can be used for steel structure warehouse ,steel structure building and steel structure workshop and so on.Features.1> Bearing bar specification:20 ... ,30,40,60mm etc. also be according to clients requirement and 30,40,60mm are recommended3> Cross bar pitch:38,50 ... ,76,100mm,also be according to clients requirement and 50,100mm are recommended.4> The Maximum length of black ...