国家/地区 中国（2）
IPC部 B（2） C（2）
IPC大类 B21（2）
IPC小类 B21K（2）
IPC C21D006/00（2）
发明人
公开年 2023（2）
申请年 2022（2） 
专利权人

Corrosion-resistant stainless steel pipe comprises pipe body and anti-corrosion coating applied on surface of pipe body, where pipe body comprises carbon, titanium, niobium, chromium, molybdenum, iron and rare earth element including rare earth oxide modified by nano-silicon carbide.

LI J, XIANG L, WANG J

Manufacturing high strength alloy steel bolt comprises taking steel for bolt, performing extrusion, hot upsetting, heat treatment and thread machining to obtain bolt blank, and performing galvanizing and zinc-aluminum coating into bolt blank.

ZHOU H