Sell Welding neck flange ( WN )

In 2, a flange material:
Carbon steel ( Carbon Steel ): ASTM A**5,*0#, Q**5, *6Mn, ASTM A**0 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A**4 F*2, F*6, F*8, F*0, F*2, F*6, F*0, F*5, F*0;
Stainless steel ( Stainess Steel ): ASTM A**2 F**4, **4L, F**6, **6L, 1Cr*8Ni9Ti, 0Cr*8Ni9Ti, **1, ***8;
Alloy steel ( Alloy Steel ): ASTM A**2 F1, F5a, F9, F*1, F*2, F*2, F*1, A**2F*2, A**2F*1, *6MnR, Cr5Mo, *2Cr1MoV, *5CrMo, *2Cr2Mo1, A**5P*2, St*5.8/ Ⅲ;
In 3, a flange standard:
ANSI B*6.5, HG*********7, GB/T***5.*****0, GB/T***5.****0, DIN********8, HG*********7, GB/T***5.*****0, GB/T***5.*****0