... .824.50.531-3 Mark, welding steelWJI-01(MBCY019-W4W)18.512.75.080.52.21.23.50.441,23,4Welding ... mark, other dimensions are using letters code mark, the meaning of the letters shown below:Symbols and parametersSize descriptionαThe pitch ... diameter of leaddLead diameterDTube’s diameter, the minimum diameter, other diameter or ...