design and manufacture:DIN3840,DIN33556
face to face::DIN3202-F1.F6,EN558-1
flanged ends dimension:EN1092-1, DIN2543,DIN2544,DIN2545,DIN2546
butt-welded ends dimension:EN12627
inspection and test:DIN3230,ISO5208,EN12266
pressure temperature ratings:DIN2401
constrction type:swing type and lift type
size&pressure rating:DN40 TO DN400&DIN PN16 TO PN100