... 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 include ERW pipes, galvanized steel pipes, seamless pipes, petroleum casing tubes, spiral welded pipes, square and ... , building, etc. The company implements international and domestic standards including API SPEC 5CT, API ...