strut channel 41*21*1.5~~82*41*2.5 1) Surface preparation:H.D.G, Pre-galvanized,Electrogalvanized2) thickness: 1.0mm~3mm3) back to back: 41x41,41x62,41x82...Strut channel1)Standard: 41*41, 41*21 2) thickness: 1.0mm~3mm. 3) Length: according to customer's requirement. 4) BH4141 (BH4125) is also available in stainless steel or other thickness on special order.5)Many different sizes shape of the ...