1 type: WN FLANGE,SO FLANGE,SW FLANGE,THD FLANGE, LJ FLANGE, BL FLANGE

2 material: carbon steel stainless steel

3 standard:ASTM DIN JIS GB API

4 size: 1/2"-24"

5 pressure: 150LB-2500LB

6. Marking: Require
7. Painting: yellow, black. Oil and Zinc
8. Test: internal and third party