we are the flange manufacture from China. We manufacture carbon steel flange as WN, SO,PL,SW,THRE,SLOTTED ,etc. Flange according to ANSI,DIN,JIS,BS,GOST,AS,etc. Meanwhile, can provide the pipe fittings as elbow, tee, reducer ,cap, etc. The pipes as welded pipe and seamless pipe. Standards and non-standards.