Blankspressure Grade: class150,class300,class600,class900,class1500,class2500size: 1/2" Nb To 48" Nb 2.din Flangesstandard:                                                                                     din2527,din2566,din2573,din2576,din2641,din2642, din2655,din2656,din2627,din2628,din2629,din2631 din2632,din2633,din2634,din2635,din2636,din2637 din2638,din2673types: welding ...