... requirements and meeting the requirments, featured below: 1) National steel construction qualification class B 2) Overseas engineering qualification 3) Time ... GB ASTM DIN JIS ISOMaterialSteel Plate, Hot Rolled Steel Section, Stainless Steel etc.Material QualityS355,S275,S235,Q235,Q345,Q390 etc ... Mining,or other fields full-cast type Tower Saddle casting for steel suspension bridge