20 Series Weld Pass This RFQ was sourced on www.MFG.com in USA for Other Grinding Ampco 25 20 Series Weld Roll Quantity of (1) set required translates to (4) rolls. Buyer Information Industry City/Region Export, Pennsylvania Country USA RFQ RFQ Number 311161 Material Technical Specifications Category Other Grinding Dimensions Get quotes online for manufacturing services at MFG.com from machine shops, fabricators, job shops and contract manufacturers. MFG.com connects buyers and suppliers when the buyer has a need and the supplier has the right expertise and capacity. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Other Grinding: Grinding is a process in which powder material is reduced in size and classified by particle size.