... spacer ;Orifice plate; Pipe plate ,Bleed ring. standardAmerican standardANSIB16.5,B16.7,/API605,6A,6B/MSS SP44/AWWA C207GermanstandardDIN2630,2631,2632,2633 ... , LF2,LF3;ASTM A193 B7, A307 B, A 320 L 7;;Alloy Steel ASTM/ASMES/A335/A315MP5,P9,P11,P12,P22 ... ;17-4PH/S1400/1.4548724L;316Lmod/1.4435;725LN/310MoLN 22.5 degree short radius ASTM A860 WPHY52 elbow