... , 34, 40, 60mm etc, also be according to client's requirement and 30, 40, 60mm are recommended, America standard is available ... , 100, 101.6mm etc, also be according to client's requirement and 50, 100mm are recommended, America standard is available. Staple ... : 30mm with best impact resistance, it find most widely use as platform, aisle, drain cover, and stair thread in power plant ...