国家/地区 中国（3）
IPC部 B（3）
IPC大类 B29（3） F16（3） B32（2）
IPC小类 B29D（3）
IPC F16L009/16（3）
发明人
公开年 2021（2）
申请年 2020（2） 
专利权人

Deep geothermal thermal insulation composite pipeline comprises four-layer composite structure, and from inside to outside are inner layer base pipe, plane high thermal conductivity layer, polyethylene foam layer and outer layer pipe, and inner layer base pipe is extruded polyethylene or PERT.

HUO F, WANG D, ZHANG Y, WANG J

Continuous carbon fiber winding composite reinforced polyethylene gas pipe comprises polyethylene gas pipe component comprising pressure-resistant layer containing graphene functional masterbatch and inner lining layer.

LIU J, TIAN X, LIU P, JIN R, ZHOU W

Multilayer structure e.g. pipe for underwater device, comprises composite reinforcing layer comprising thermoplastic polymer having preset glass transition temperature, welded to outermost sealing layer, and excludes hydrogen from structure.

HOCHSTETTER G