
Ductile Iron Double-flanged 90 Degree Bends For Use With Gas And Water Pipes - Dimensions And Mass
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
In conjunction with DIN 28600, covers ductile iron double-flanged 90degree duckfoot bends that are coated with bitumen and lined with cement mortar ('bends', for short).
ISO 2531:1998 - Similar