... production: .. F and K. F hexagon cut mouth, the DB series cutting nozzle, GZ105 series cutting nozzle, the GZW1 cutting nozzle, the SG ... varieties. .. F and K. F hexagonal cutting nozzle and the DB series cutting nozzle for cutting (100 ~ 500mm) thick steel billet; GZ105 ... to use, difficult to tempering for cutting 200mm billet; SG series accident cutting nozzle is mainly used for cutting; the GK3 ...