国家/地区 中国（2）
IPC部 B（2）
IPC大类 B05（2）
IPC小类 B05D（2）
IPC
发明人 WANG Y（2）
公开年 2023（2）
申请年 2022（2）
专利权人

Mortar lining material useful for ductile cast iron pipe lining for sewage, comprises high aluminum cement, granulated blast furnace slag micro powder, silicon ash, sand, water reducing agent, retarder, graphene oxide, and water.

WANG Y, MA Z, ZHAO H, WANG J

Preparing coating for screw thread, comprises e.g. providing workpieces with screw thread, pretreating screw thread part of workpieces with screw thread; sandblasting workpiece with screw thread after pretreatment; and preheating workpiece with screw thread after sandblasting.

SUN J, WANG Y, WANG L, LI R, SONG X, LIU X