Standar Flange: Standar Nasional GB / T9115-2000, Departemen Mesin STANDAR JB82-94, Standar Industri Kimia HG20595-97HG20617-97, Standar Kamentrian Listrik GD0508 ~ 0509, standar Amérika ASME / ANSI B16.5, standar Jepang JIS/KS(5K, 10K, 16K, 20K), Jérman standar...
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