... ,Class1500,Class2500SIZE: 1/2" NB TO 48" NB 2.DIN FLANGESStandard: DIN2527,DIN2566,DIN2573,DIN2576,DIN2641,DIN2642, DIN2655,DIN2656,DIN2627 ... stainless steel and alloy steel flanges standard: ANSI, JIS, BS, DIN, EN,GBsize: 15mm to 3000mm pressure:75bls to 2500bls package ... customers request making RTJ, heat treatment, hot dip galvanize and electric galvanize Producing according to customers drawings