Steel Plate EN1092-1 Type01 Flange

EN1092-1 (PN) contains a nominal pressure for PN2.5, PN6, PN10, PN16, PN25, PN40 and PN100 seven gears, nominal size is DN10 ~ DN4000.Flange structure is loose tube plate flat welding, butt welding ring, flat welding ring loose tube, flanging loose tube, wonderful butt welding, overall, a total of eight kinds of thread and flange cover.Seal type has a full plane, surface, concave/convex, tenon groove surface and o-ring groove.Used with inch pipe series steel pipe.
The pipe flange on international standard, there are two main system a is a delegate with eu EN Europe pipe flange standard system (nominal pressure using PN);Another American pipe flange is a delegate with the ASME standard system (nominal pressure using the class).

Europe and America tube flange pipe flange standard system standard system is two different and not interchangeable tube flange standard system, in addition, Japan JIS flange (nominal pressure using K said) standard system, but not in the China petrochemical plant is multi-purpose, or only used for public pipeline engineering.

European system flange standard flange and the American system is inch pipe as the object, but nominal pressure level is different, overlapping also have repeat, connection size is completely different, therefore, cannot match each other.If the pressure level to differentiate, PN series for PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400;Class series of class150 (called PN20), class300 (also called PN50), class400 (called PN68), class600 (called PN110), class900 (called PN150), class1500 (also called PN260) and class2500 (also called PN420).
ISO7005-1 is a pipe flange standards issued by the international organization for standardization, ISO 7005-92 is, in fact, the United States took ASME B16.5 with original Germany DIN a merger of two sets of standards.The nominal pressure points and two series of tube flange, the first series of PN10, PN16, PN20, PN50, PN110, PN150, PN260, PN420, the second series of PN2.5, PN6, PN25, PN40.In the series, two pressure PN2.5, PN6, PN10, PN16, PN25, PN40 flange dimensions according to DIN (the European system) to determine.Flange structure is loose tube plate flat, flat welding ring, flange ring loose tube, loose tube butt welding ring, good butt welding, almost flat welding, threaded flange, socket welding flange and flange cover a total of nine kinds of types.Sealing surface tu plane, the plane, concave/convex, tenon groove surface, rubber ring joint, RTJ six kinds.

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