Sanitary Pipe Fittings Brief Introduction

Sanitary pipe fittings lun lead rebound, shock trend does not change, the current upper resistance $2050, below support $2000, short-term price may further rebound, but the overall weak shock  

Bureau.  

1) Rapid heating in a controlled oxidizing atmosphere, where an oxidation nucleus and a thin oxide film are formed  

2) Annealing section, complete the transformation of metallurgy (to get the required mechanical properties, grain size, carbon solid melting, etc.), the annealing in a non-oxidizing atmosphere (nitrogen), to limit the growth of oxide layer;  

3) In the cooling section under non-oxidizing atmosphere, the cooling rate can avoid carbide precipitation; 4) effective electric descaling section of sanitary pipe fittings  

5) Slight chemical pickling section can reduce the impact on the environment and produce passivation of the surface.  To get the best surface, this step can be avoided.