... VOLUME OF 18,000 SETS OF "WEILI"SERIES ELECTRIC THREADING MACHINES. N501.Machining range :1/2”---2’’2. ... weight :185kg6.thread gauge:BSPT7.dies:2 1/2''-4'',5''-6''M24(round steel machine)1.machining range ... weight :65kg6.thread gauge:NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M33(round steel machine)1.machining range ... BSPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24,1/2''-3/4'',1''-2'' pipe threading machine