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Wenzhou Yuzheng Valve Pipe-Fitting Co.,Ltd is one of the leading China bolted blank flange 

manufacturers, welcome to wholesale cheap bolted blank flange from our professional factory.

Bolted Blank Flange

Bolted Blank Flange,  12 bolt holes, Stainless Steel.

These bolted blank flanges follow International Standards Organization (ISO) standards and have a flange size of NW-200. ISO flanged vacuum fittings are commonly used to build process vacuum plumbing and systems for industrial applications. The fittings are quick to assemble using double claw clamps and a centering ring (please see top right figure - click to enlarge). The Viton® centering ring contains a rubber/elastomeric o-ring. The ISO standard sizes for large flanges are NW-63, NW-80, NW-100, NW-160, NW-200, NW-250, NW-320, NW-400, NW-500, NW-630. These vacuum flages are made of corrosive aluminum. (This is only ONE Bolted Blank Flange)Bolted blank flange, 12 bolt holes, NW-200 Vacuum Fittings, ISO-LF Large Flange Size NW-200, Stainless Steel

ISO-LF Flange Size: NW-200
Common Dimensions: A = 11.25" (285mm), B = 0.6875" (16mm), C = 10.25" (260mm), 12 bolt holes