国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2） F16（2）
IPC小类 B29B（2）
IPC B29C048/00（2）
发明人
公开年
申请年
专利权人

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

Method for slowing down pipeline vibration stress in indoor hanging air conditioner, involves generating pressure relief by cooling medium for stopping movement of high speed cooling medium before reducing impact, and reducing stress.

WANG J, CUI S, WU C, WANG T