Material And Standards of Crane Rail Clamp Fasteners
- The upper cover plate, base plate and adjusting plate are ZG270-500. The material complies with the requirements of 5676-85. Wax loss precision casting is adopted. The dimensional deviation is up to JZ67-2, the II grade stipulation.
- Rail bolts and rail nuts are defined as Q235BF steel parts, mechanical properties and chemical composition GB700-88, the surface accuracy of rail bolts is 12.5, and the rail nuts can meet the requirements of GB 6170-86.
- The flat washers are made of Q235AF steel and the production requirements are in accordance with the provisions of GB97.1-85.
- The spring washer is 65Mn or 60Si2Mn steel, the material meets the requirements of 1222-84, and the production requirements meet the requirements of GB93-87.
