U channel, C channel steel, reach ASTM, AISI etc. We are one professional steel exporter in China.We have some channel steel stock at the moment. Pls check the details as the following channel steel spec.Material: 195-215,215-235,Q235,Q345 etcSpec is as the following:spec(mm) type No. unit weight(kg/m)50*37*4.5 5# 5.4463*40*4.8 6.3# 6.63565*40*4.8 6.5# 6.780*43*5 8# 8.045100*48*5.3 10# 10.007120* ...