国家/地区 中国（3）
IPC部 C（3） F（3） B（2）
IPC大类 C09（3）
IPC小类 C09D（3）
IPC C09D007/63（3）
发明人
公开年 2022（2）
申请年
专利权人

Modified polyethylene wearable composite pipe for water supply and drainage of municipal and building, has glass fiber line that is provided with multiple layers on outer layer pipe structure, inner tube body and outer layer pipe body fixedly connected with the inner layer pipe body.

LIN J

Inner wall wear-resistant pipe material has inner wall pipe material comprising inner wall pipe main body and inner wall pipe ear-resistant coating, where inner wall pipe main body and inner wall wear-resistant pipe coating are arranged from outside to inside.

DAI L

Spring useful for vertical damping assembly, comprises spring main body, which is coated by corrosion resistant layer made of corrosion resistant layer slurry, which is prepared by mixing graphene polycarbonate and propylene carbonate.

ZHOU H