... adopting the technology of Japan and Korea using it in casting,adsorpting,abutting,filteringetc. It will fureher promot your products internal ... to form and it is applicable to different refractoriness and casting velocity.it is convenient to use include staight tube, ... cock,straightcut etc for abuting joint ,dredging and abutting.the casting products will be small dit,balanced density ,slippy surface. ...