galvanized steel, might need some work though

#declare GalvanizedSteel=
material {
 texture {
  pigment {crackle solid scale .1
   color_map {
    [0 rgb .5]
    [1 rgb .9]
   }
  }
  normal {granite -.03}
  finish {ambient 0 diffuse 1 brilliance 3 specular 1 roughness .01 metallic 
reflection {0,.125 fresnel on metallic 1}}
 }
 interior {ior 30}
}

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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