seal alloy meaning in Chinese

焊封用铋合金

Standard specification for iron - nickel sealing alloys
铁镍密封合金标准规范
Standard specification for iron - nickel - cobalt sealing alloy
铁-镍-钴密封合金的标准规范
Standard specification for 42 % nickel - 6 % chromium - iron sealing alloy
42 %镍6 %铬铁焊接用合金的标准规范
Standard specification for chromium - iron sealing alloys with 18 or 28 percent chromium
含有18 %或26 %铬的铬铁焊接用合金的标准规范