Conforming to ANSI,DIN,JINS,ISO standard and processing according to the customer's requirements. ... Steel 1020, Steel 1045. 5.Surface treatment: Carburizing, hardening and tempering, nitriding, high frequency treatment, black of oxidation, zincing ... 10*10*1000mmMaterialC45Typespurteeth finishcutprecisionup 5Product usage gate opener machines, lifting machinesOur capacity: 1.Standard type:Module: 2-25 ...