 CARNEGIE, Pa.--BUSINESS WIRE--Ampco-Pittsburgh Corporation NYSE: AP the Corporation or Ampco-Pittsburgh reported net sales of 86.8 million for the three months ended March 31, 2021, compared to 91.1 million for the three months ended March 31, 2020. The decrease is primarily attributable to lower shipments of mill rolls than pre-pandemic levels, offset in part by higher shipments of forged engineered products. Income from operations for the three months ended March 31, 2021, was 0. 