Rapid prototyping has several important features:l) It is possible to manufacture arbitrarily complex three-dimensional geometric entities Due to the principle of discr
2019-10-09A metal material refers to a material having properties such as gloss, ductility, conductivity, heat transfer and the like Generally divided into ferrous and non-fer
2019-10-09GB T 1838—2008 Test method for tin plating quantity of electroplated tin steel plateGB T 1839—2008 Quality test method for galvanized layer of steel productsGB T 101
2019-10-09GB T 224—2008 steel decarburization layer depth measurement methodGB T 225—2006 End quenching test method for steel hardenability (Jominy test)GB T 226—2015 steel low-
2019-10-09GB T 222-2006 steel finished product chemical composition toleranceGB T 223 X series Steel and alloys Determination of X contentGB T 4336—2002 Carbon steel and medium-l
2019-10-04