... : 8#~20# We provide high quality and low price channels. Channel bar details:ProductsSizeThicknessSquare steel pipe10-400mm 0.3-16mmRound steel ... -2.0mm36D0.9-1.5mmHollow sectionSizeThicknessL28,38,500.6-1.8mmL28,38,500.6-1.8mmZ28,38,500.6-1.8mmProcessing techniqueThreading,Nacking ... :BS1139,BS1387-BS1385,ASTMA53B,Sch10-40,ASTMA500,API5L,API5CT,DIN2440andEN10219 Channel bar