channel steel bar(high quality and low price) Steel Grade:Q235,ASTMA53, ect. Dimension:50*37-400*104 channel steel bar(high quality and low price)The products of Hengji Steel ... including API SPEC 5CT, API SPEC5L,ASTMA53,CB/T9711.1, GB/T9711.2, BV/T13793, SY/T5768 for its products which will ...