国家/地区 中国（2）
IPC部 B（3）
IPC大类 B29（3）
IPC小类 F16L（3） B29C（2） B29D（2）
C08K（2） C08L（2）
IPC F16L009/147（3）
发明人
公开年 2021（2）
申请年 2021（3）
专利权人

Tubular composite structure for renewed pipe structure pair, comprises a sealing layer, one or more axial reinforcement layers, a hoop reinforcement layer, and a protective layer, and each tubular assembly optionally further comprising a sensor array layer.

WEISENBERG K

Strong corrosion resistance steel belt reinforced spiral corrugated pipe comprises steel belt and outer pipe and inner pipe composing bisphenol A epoxy vinyl resin, phenolic resin, polypropylene, glass fiber, and modified graphene.

PEI S, ZHOU S, XU J, XU H, CHEN X

Oxidation-resistant polyethylene composite pipe comprises core pipe that is provided with aluminum sheet layer provided with outer layer pipe, where core pipe and outer layer pipe are made of polyethylene, chlorinated polyethylene, dibutyltin dilaurate, zinc stearate, graphene, and barium laurate.

LIU J, WANG J, WANG H, WU D