国家/地区 中国（2）
IPC部 B（2）
IPC大类 B21（2）
IPC小类 B21D（2）
IPC B21D037/16（2）
发明人
公开年
申请年
专利权人

Coated aluminum-silicon plated steel plate useful in thermoformed component, comprises steel substrate and aluminum-silicon coating coated on the surface of the steel substrate, where the surface of the aluminum-silicon coating is covered with coating.

MA X, JIN X, LIU H, TAN N

Preparing titanium alloy large-diameter square thin-walled pipe comprises e.g. heating mold, insulating and preheating, fixing the preheated punch press rod on upper mold of the press, and expanding round tube into a square tube.

CHEN X, ZHANG L, QIAN C