国家/地区 中国（17）
IPC部 F（17） C（5） B（4）
IPC大类 F16（17） B29（3） C09（3）
C08（2）
IPC小类 F16L（17） C09D（3） B29C（2）
C08L（2）
IPC F16L058/04（17）
发明人 LIU B（2） LIU Y（2） WANG L（2）
公开年 2022（5） 2020（4） 2018（2） 2021（2） 2023（2）
申请年 2022（5）  2019（4）  2021（3）  2017（2） 
专利权人

Expansion joint of catalytic cracking, has corrugated pipe and flange that are made of titanium material and inner wall of corrugate pipe is provided with anti-corrosion layer.

GU L, MIAO X, QIAN Y, XIA G

Aramid fiber winding composite pipeline for conveying hydrogen, has wearable layer located in inner layer of hydrogen blocking layer, where wearable layer is wearable plastic and is provided between core tube layer and outer protective layer.

WANG Y, MA Z, ZHAO M, LI Y, YU J, TANG Z

Air conditioner radiating copper pipe, has pipe body provided with heat exchange groove and surface of pipe body is provided with graphene anti-oxidant layer.

FANG Y

Prefabricated directly-buried integrated insulating pipe with anti-corrosion function, has head of screw thread rod is rotatably connected with back of movable sleeve ring through bearing and operating handle is locked and installed.

ZHOU X, ZHAO H, LIU G

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

Petroleum pipeline with high-efficiency anti-pressure corrosion resistant function, has reinforcing layer whose inner cavity is fixedly connected with lining sleeve, and comprises graphene coating layer, polyurethane resin layer and glass fiber layer.

LIU Y

Polybutylene composite pipe used in hot spring transportation, comprises anti-corrosion outer layer, thermal insulation layer and working inner layer from outside to inside, where working inner layer is made of polybutene material and insulation layer is made of polyethylene foamed plastic.

QIN X, YI Z, WANG L, JIN J, LIANG Y

Anti-static anti-corrosion natural gas conveying steel pipe, has outer wall anti-corrosion coating whose inner wall is provided with inner layer anti-corrosion coating and outer layer anti-static anti-corrosion coating.

CAO J, NI F, KONG D, LIU S, KONG T, LIU B, XING H

Corrosion-resistant sewage pipeline comprises pipeline main body comprising substrate layer, functional layer comprising antimony trioxide coating, polyurethane fiber layer and polyvinyl alcohol fiber layer, and anti-corrosion layer.

QIN R

Corrosion resistant plastic pipeline, has limiting block whose end is equipped with inclined surface, where limiting block is formed with end of inclined surface in limit groove and coated with anticorrosive graphene coating on plastic pipe body.

PAN Z