Umusaruro wikora wa Gariyamoshi ya DIN, koresha umurongo wa galvanis kugirango utange umusaruro.
Gukata byikora no gukubita umwobo, umurimo umwe urakora
Ubunini bwibintu ni 0.8-1.0mm, 1.0-1.2mm, 1.2-1.5mm. Ubunini buri hagati yimashini imwe. Imiterere ya Torrist, uruhande rumwe rushobora kwimuka no guhindura ubugari