Name:Skl rail clip(skl1,skl2,skl3,skl12,skl14) Material:60Si2MnA/60Si2CrA/38Si7/55Si2Mn Hardness:SKL rail clip:42-47HRC Fatigue life:5 million cycles without breaking Surface:Plain(oiled),black,HDG,Zinc plating,color painting Standard refers:GB/T1222,BS970,DIN17221 Zhongbo Railway Fastening Company is a leading Chinese manufacturer of rail fastening and rail joint bar.Zhongbo, as a specialized rail fastener manufacturer, provides a complete line of products as follows: 1.Rail clip,tension clamp,E rail clip,skl rail clip,W rail clip,O rail clip ,fast rail clip 2.Rail screw spike,rail sleeper screw,rail dog spike,coach screw,track spike 3.Rail bolt with nut,track bolt,anchor bolt,high strength bolt 4.Tunnel Construction Rings Connection Bolts 5.Fish plate,fish bolt,washer,nut 6.Plain washer,spring washer 7.Rail shoulder 8.Tie plate,base plate 9.Rail insulator,guide plate 10.Turnout,switch 11.Rail sleeper,steel sleeper,concrete sleeper,wood sleeper 12.Rail pad,rubber pad We are dedicated on supplying more better quality rail fastenings to the world railroad, and contributing to availability of more safety and convenient transit. A support expanding your business!