titanium welding neck flange Trademark:Gr1,Gr2,Gr5,Gr7,Gr9,Gr12 Processing methods:forging+machining Size Range（mm）:DN10-DN500 Implementation of standards:ASME、DIN、ISO、JIS Material Grade:Gr1 Gr2 Gr7 Gr12 Certification:ISO9001:2008, TUV, material test certificate acc EN10204.3.11 Standard:ANSI B16.5, ASTM B16.5, ASME B16.47, JIS B2220, DIN2630-2637, EN1092-1 AWWA ASTM A182, AND ASME SA182 Size:1/2"~ 60"NB NPS 1/2 - NPS 24 (DN 10 - 2000) Pressure Class:PN0.25~32Mpa (DIN) PN6 PN10 PN16 PN25 though PN250 150# 250# 300# 400# 500# 600# 900# 1500# 2500# Technique:Forged and CNC Machined