Steel Gear rack for sliding gate . Material:C45 steel,40CR steel Module:M1-M8 Grind treatment: For sides grinding finish Steel gear rack for sliding gate Steel gear rack have below sizesLength:(500,1005, 1998) in M4.M6 Specifications Module4-6Core hardnessHB200-240MaterialC45 Steel/A3 Steel/SUS304,SUS316Surface hardnessSurface TreatmentBall Blasting&Electro-platingLength1005 or 1998Steel gear ...