... 5/8"(0.4*12.7,16mm) , BWG25*1/2",5/8",3/4"(0.5*12.7,16,19mm) , BWG24*5/8",3/4"(0.6* ... 16,19mm) , BWG23*5/8",3/4"(0.65*16,19mm) , BWG22*3/4",5/4"(0.7*19,32mm) ,BWG21*3/4",5/4"(0. ... 8*19,32mm) ,BWG20*3/4",5/4"(0.9 ... *19,32mm) ,3.mechanical property 1) common ...