国家/地区 中国（2）
IPC部 B（2）
IPC大类 B22（2）
IPC小类 C22C（2）
IPC
发明人
公开年 2022（2）
申请年
专利权人

Preparing pipe material comprises cleaning mineral-inorganic composite materials, grinding, melting, casting and forming in combination with pipe mold by means of centrifugal casting, demolding and cooling, heating and densifying, and coating anti-corrosion coating.

WANG P

High strength conversion flange comprises steel material having carbon, silicon, manganese, chromium, nickel, molybdenum, gallalium, Rhenium, zirconium, lutetium, and strontium.

MENG K