Flanges

i need to buy the below flanges
regards
namir
flange, class 600, welding neck, raised face,
carbon steel
working pressure -600 psi at 850 deg.f.
-1440 psi(cold, non shock)
to b.s. 1560(latest edition) with steel to a.s.t.m.
spec.a105 grade 1. but with carbon content not
to exceed 0.27% with out prejudice to yield strenght
nom. pipe
size- ins.
6 nos 10