Continuous Heat-treatment for Steel Bar, Tie Rod, Bolt, Screw-thread Bar, Pipe, ... (Max.)Yeild Strength: 600~1080 MPaTensile Strength: 780~1230 MPaStandards of products: JIS G 3109-2008, ASTM F 432-2008, ASTM ... /T 20934-2007, MT 146.2-2002 Steel Bar/Pipe Heat-treatment Processing Line