... machined for Taizhou Yangtze River Bridge, also used in bridge and harbor, featured below: 1) National steel construction ... ASTM DIN JIS ISOMaterialSteel Plate, Hot Rolled Steel Section, Stainless Steel etc.Material QualityS355,S275,S235,Q235,Q345,Q390 ... Drawing DesignCertificationISO 9001:2000Some pictures are hereof for reference: Steel anchor tie rod forging for Taizhou Yangtze River Bridge