国家/地区 中国（2）
IPC部 B（2）
IPC大类 B05（2）
IPC小类 B05D（2）
IPC B05D005/00（2）
发明人
公开年
申请年 2022（2）
专利权人

Preparing internal spiral polyvinyl chloride drainage pipe, comprises e.g. bending and spiraling steel wire, extruding, injecting into brushing mechanism, carrying out spiral groove processing, forming inner spiral groove, spraying, extruding, painting and performing preliminary drying.

LIU Z

High temperature resistant and acid-resistant coating applied to tail gas device of calcination rotary kiln comprises steel plate, outer side of steel plate is coated with insulating coating, inner wall of steel plate is coated with inner coating,.

ZHANG W, ZHAO G