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