1) Specification: 1"-4", DN25-DN100 2) Standard: DIN, SMS, 3A, ISO, IDF 3) Material: Stainless steel 304, 316L Stainless steel Flange,blind flange,flanges1) Size: 1/2 - 24"2) Pressure class: 150 - 2,500lbs3) Facing: RF / FF / RTJ4) Material: F316, F304, F316L, F304L,5) Standards: ANSI B16.56)Large diameter: ASME B16.477) Other standards: DIN/BS/UNI/JIS