... to the provisions of the JB/T10219-2001 "explosion-proof crane beams" standard, technology is mature, reliable, simple structure, small shape, ... to the GB3836.1-2010 "explosive environment with explosion-proof electrical equipment," and GB3836.2-2010 the explosive environment with ... ~+40 C. The products are widely used in chemical factory, warehouse, material, is provided with the ground and the ...