Caliberflangeflat welding flange and butt weld ends are so common flange threaded flange is not in the real production and sales of large diameter, or much more flat welding products accounted for the proportion of flat welding of large diameter flange and butt welding of large diameter flange structure and use of the range is different, can show the characteristics and advantages of also will be different, so when use should be used according to different range, to ensure the flange play an Magna partes magnae-diametro plana welding LABIUM cum pauperem rigiditatem, idoneam ad pressura P IV MPA occasiones, petat welding LABIUM, etiam notum ut altum collum LABYMENTUM, idoneam, idoneum ad altum pressura temperatus occasiones.
Sunt tria genera Labe signatio superficies: planum signing superficiem, idoneam ad non-toxicus occasiones medium cum humilis pressura; concava et ad fastenistics in applicationem, idoneam advenientibus et adimpleti, magna est in applicationem et in proprietatibus, magna est in proprietatibus et in sequentibus, quod est ad applicationem in proprietates large diameter flange style should be along the rolling direction after heat treatment on the blank of stealing, so cut off position is: if the blank is not more than 40 mm diameter, then there should be at the center of sampling;If the diameter of the blank is greater than 40mm, then the equilong double-head stud and full-thread stud sampled at the center at a quarter of the diameter shall be tested in batches and the nuts shall be tested In batches ad duritiam; et rudis materiae propter specialis fasteners erit in materia absolute certificatorium fabrica.

Flange is fasteners for fastening and widely application of mechanical parts are widely used all kinds of mechanical equipment vehicles instrumentation ship structure of railway bridge construction tools and supplies such as above, you can see all kinds of fasteners, it is the feature of variety specification is various, performance different purposes, and standardized series of generalizing large diameter flange kind of degree is also very special fasteners, should according to the number of sampling inspection after heat treatment, inspection results shall comply with the relevant provisions of, and shall ensure that the mechanical properties of the product is not lower than the performance of the sampling conditionAll studs used for large-diameter flanges with nominal pressure PN no less than 10.0MPa shall be inspected by magnetic particle according to the non-destructive inspection of JB 4730-1994 pressure vessels one by one. Post inspectionem, ibi erit dubium cum uber, et occurrit in necessitate magna-diameter flanges secundarium remittings