Through Grinding and other Processings Yunsheng can make tailor-made Quartz Flanges: Flange OD is from: 5mm to 500mm Flange ID is from: 1mm to 450mm Flange Thickness is from: 0.5mm to 550mm Other dimension unspecified here could be in accord with customers' designs. Quartz Cones, Sockets and Cup & Ball Joints All our joints have the following advantages Bevelled edges for greater chip resistance. Exclusive extra heavy rim on all outer joints for greater impact resistance. Standard taper joints comply with the ASTM specifications E676. All standard taper joints are ground to a 10:1 taper. Large stock levels held. Non-standard taper joints and longer lengths are available for quotation upon request. Please feel free contact me: chinamerry315 AT hotmail DOC com