国家/地区 中国（5）
IPC部 B（5） F（5） C（3）
IPC大类 B05（5）
IPC小类 B05D（5） F16L（3） C09D（2）
F16B（2）
IPC B05D007/24（5）
发明人
公开年 2023（2）
申请年 2022（3） 
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 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

Production process of wear-resistant gasket of graphene composite lubricating coating involves pre-treatment of steel raw material for blanking finishing, forming gasket, and cleaning, removing surface oil stain, and heat treatment.

YIN M

Graphene-lubricating wearable anticorrosion oil pipe, has adhesive layer, and oil pipe body whose inner wall is formed with lubricating wearable anticorrosive layer, where thickness of protecting layer is in specific range.

CHENG C

Solid lubricating coating for screw cap, comprises molybdenum disulfide, PTFE, graphite, graphene, tungsten disulfide, carbon monofluoride, epoxy resin, nitroresin and coating additives.

ZHANG B