railway parts

we can make the railway parts,railroad parts,by precision casting,these parts need to be heat 

treatment to get a very strong strength,

some parts are wear resistance,some parts are heat resistance,the engineer will adjust the chemical composition accordingly.

Roughness of the casting surface:Ra6.3-25
the process is :develop moulds---Wax injection--mould shell making--lost wax--mould shell baking---

pouring---sandblast---machining---surface treatment.
material: carbon steel, alloy steel, stainless steel,