ONORM B 2550-1987 Gas pipelines of ductile cas iron pipes and fittings《气体管道的球墨铸铁管及配件》.pdf

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JIS G5504-2005 低温用厚壁铁素体球墨铸铁件.pdf

JIS G5503-1995 奥氏体等温淬火球墨铸铁件.pdf

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JIS G5528-2006 球墨铸铁管内壁环氧树脂的涂布方法(修改件1).pdf

JIS G5528-1984 球墨铸铁管内壁环氧树脂的涂布方法.pdf

JIS G5502-1995 英文版 球墨铸铁件.pdf

JIS G5502-2001 球墨铸铁件.pdf

JIS G5502-2001 英文版 球墨铸铁件.pdf

CJ T 3056-1995 城镇燃气用球墨铸铁、铸钢制阀门通用技术要求.pdf

CB T 3408-1991 船用柴油机球墨铸铁曲轴技术条件.pdf

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