design and manufacture :DIN3352
face to face:DIN 3202-F4,F5.F7,F15,EN558-1,ISO5752
flange end dimension:EN1092-1,DIN2543,DIN2544,DIN2545,DIN2546
BUTT WELDED ENDS DIMENSION:EN12627
INSPECTION AND TEST:ISO5208,EN12266
PRESSURE TEMPERATURE  RATING;DIN2401
CONSTRCTION TYPE:RISING-STEM AND NON-RIDING STEM
SIZE &PRESSURE RATING:DN40 TO DN1000&DIN PN16TO PN160