DIN standard flange/wn PL flange: 1.BL/PL/SO/SW/IF/WN/TH 2.DIN/JIS/ASME/GB/ ... ) standard;2.DN15-DN2000(NPS1/2-NPS80);3.types:BL/PL/SO/SW/IF/WN/TH,PJ/PR,PJ/SE,BL ... machinery,chemical industry;You are welcome to visit our website www.zhflange.net.cn which includes our company profiles,history and ... be happy to give you details. DIN standard flange/wn PL flange