Dn125 FM Concrete Pump Pipe Flange 1 Material: Stainless Steel:such as 304,304L,316,316L,321 ,310S,904L,S31803,F51and so on. 2 Standard: GB,JIS,BS,DIN.ANSI and Non standard,for forged uni flange supplier/price 3 ANSI Class: 15,030,040,060,090,000,000,000 4 Size: 1/2′-60′ 5 Type: Slip-on flanges, Blind flanges, Lap joint flanges, Welding neck flanges,Plate flange,Socket welding flanges and Treaded flanges 6 Pressure ratings: class:150 300 400 600 900 1500 and 2500, pn :6 10 16 25 40 64 and 160 ,5K-40K and so on 7 Sealing surface: FF ,RF, LJ, FM ,R.T.J ,R.J and so on . 8 Production process: