Sharing: precision steel pipe fire protection measures1, outsourcing layer. Outsourcing is in auto precision steel tube appearance add layer, can cast-in-situ forming, spraying method can also be adopted. Cast-in-situ molding outsourcing entities concrete layer Cold Drawn Steel Tubes usually use steel wire or steel to strengthen, to limit the shrinkage crack, and secure shell Strength. Spraying...

Galvanized pipe processing after plating process including pretreatment, plating and electroplating processing. The electroplating process depends on the quality of coating materials and plating process is influenced by side impact beams many factors. The following six factors summarized as follows:1, zinc content. 2, sodium hydroxide. 3, iron content. 4, brightener. 5, and temperature. 6,...

The original organization for precision cold drawn steel tempering steel high temperature tempering brittleness of significant differences in the sensitivity. Martensite high temperature tempering organization for high temperature cold drawn tubes tempering brittleness sensitivity is the largest, bainite high temperature tempering times, pearlitic structure is minimal.The essence of the...