JDP Products plate products thicknesses are based on ASME B16.48 specifications.  Ring Joint (RTJ) dimension and tolerances are in accordance with A.N.S.I. B16.5 and B16.20.  Our Figure 8's, Paddle Blinds, and Spacers are available in a variety of materials such as stainless steel, carbon steel, and other special alloys can be furnished upon request.  One coat for standard shop primer (flat black) will be applied to all carbon steel plate products unless specified differently. 

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For Paddle Spacers, the hole diameter in the handle is 1/2" for 1" wide handles, and 3/4" for 1-1/2" wide handles.  ASME B16.48 prohibits the use of indicator or bolt holes in the handles of Paddle Blinds.  However this option is available if required by purchaser.