hot rolled channel steel 1.Standard:GB/T707-1988,Q235B,EN10025 2.Size:80,100,120,140,160,180,200,220,250,280,300,320 1.Standard: GB/T707-1988 Q235B EN10025 St37-2 JIS 7.5#—15#, GB 5#—40#b 2.Size: 80,100,120,140,160,180,200,220,250,280,300,320 3.Length: 6-12M hot rolled Channel Steel/Steel Channel