国家/地区 中国（2）
IPC部 F（2）
IPC大类 F16（2）
IPC小类 F16L（2）
IPC
发明人 QIAN Y（2）
公开年
申请年 2022（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

Municipal engineering underground pipeline four-foot robot pipeline detecting device, has robot body whose back part is provided with graphene storage battery group box, where upper part of front part of robot body is provided with detection image collecting device.

WANG X, HE Z, WANG J, WANG L, QIAN Y, ZHOU J