... ports, etc. We can produce, upon the customers' need, covers of any shape and size in order to satisfy different loads and spans ... ,25,30,32.5,34,40,50,60,80,90mm,of which 25,30,34,and 40mm are recommended.2.Cross ... bar pitches may be 24-200mm,of which 50mm,76mm and100mm are recommended.3.Surface-treatment:Galvanized ...