... . Dimension:50*37-400*104 channel steel bar(high quality and low price)The products of Hengji Steel include ERW pipes, galvanized ... steel structural products, building, etc. The company implements international and domestic standards including API SPEC 5CT, API SPEC5L,ASTMA53,CB ... desire to establish business relations with you on the basis of equality, mutual benefit and the exchange of needed goods. ...