THE THREADING MACHINE FACTORY HAS AN ANNUAL PRODUCTION VOLUME OF 18,000 SETS OF "WEILI"SERIES ELECTRIC THREADING MACHINES. N501.Machining range :1/2 ... weight :65kg6.thread gauge:NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M33(round steel machine)1.machining range :10mm-33mm2 ... .thread gauge:NPT and BSPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24,1/2''-3/4'',1''-2'' pipe threading machine