NJMM inogona kugadzira simbi grating maererano nezviyero mumatunhu akasiyana, akadai seChina: YB/T4001.1-2007, USA: ANSI/NAAMM (MBG531), UK: BS4592 zvichingodaro.
NJMM inogona kugadzira chero kutsanangurwa kwesimbi grating iripo, zvese mukutsanangura inch uye metric tsananguro.
Anonyanya kuzivikanwa mapenera saizi 3'X24', 3'X20', 1000X6000mm, 1000X6100mm nezvimwe.
Mabhawa anonyanyozivikanwa ndeanoti 1" X 1/8", 1" X 3/16", 1" X 3/16", 1" X 3/16", uye 25X3, 30X3, 32X3, 25X5, 32X5, 35X5, 38x5 uye.
Serration inoitirwa kutsvedza kuramba.Iyo grating iyo ine nzvimbo dzepamusoro dzemazariro ekubereka nottched.
Bar grating inouya isina kugadziriswa, yakapendwa, inopisa dip yakagarwa.
Ehe.