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 ... ,CB/T9711.1, GB/T9711.2, BV/T13793, SY/T5768 for its products which will satisfy the needs of clients having ... our desire to establish business relations with you on the basis of equality, mutual benefit and the exchange of needed goods.Cell ...