... ,ST52.3,CK45,E355,16Mn,STKM13C,SAE1020,SAE1026,SAE1045 Name: 6 x 1 CNG cylinder tubes for Auto Grade:ST52,ST52 ... .115/0+0.185/0250 - <=315+0.052/0+0.081/0+0.130/0+0.210/0315 - <=700+0.057 ... /0+0.089/0+0.140/0+0.230/0 6 x 1 CNG cylinder tubes for Auto