Nickel muaj cov khoom siv zoo, lub cev thiab tshuaj lom neeg, ntxiv cov khoom tsim nyog tuaj yeem txhim kho nws cov oxidation tsis kam, corrosion kuj, kub siab zog thiab txhim kho qee lub cev.Txuj: ASTM, AISI, JIS, GB, DIN, EN