product type 1. A is for conventional speed railway, B is for railway with speed of 250km/h, C is for 350km/h high speed railway 2. Type: J is for contact wire, C is for messenger wire 3. structure type: A is taper sleeve type, B is wedge type 4. dimensions: matching the nominated cross section（mm2） of the wire to be anchored parameters: a) the maximum working load: for contact wire (J type): 22.0kN for conventional speed railway, 27.5kN for railway with speed of 250km/h, 33.0kN 350km/h high speed railway. for messenger wire (C type): 16.5kN for conventional speed railway, 25.3kN for railway with speed of 250km/h and 350km/h. b) the sliding load: not less than 95% of the nominal breaking load of the wire to be anchored. c) breaking load;≥3 times the maximum working load.