1)Name:titanium flange 2)Standards:ANSI,DIN,JIS and API. 3)Product range: DN15-DN3000 titanium 12 point flange nut1)Name:titanium flange 2)Standards:ANSI,DIN,JIS and API. 3)Product range: DN15-DN3000 We have already passed the SGS certification.If you have any problems, you can feel free to contact me at any time you want.Below is the related products!