DIN 2633 PN16

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange.

The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.


DIN 2633 PN16 DIN 2633 PN16
PipeFlangeNeckRaised faceScrewsWeight of a flange
(7,85 Kg/dm3)
Rated
Diameter
d1Dbkh1d3srh2d4fNumberThreadd2Kg
ISO Series 1DIN Series 2
15-2095146535302464524M 12140,648
21,3-32
20-25105167538382,3465824M 12140,952
26,9-40
25-30115168538422,6466824M 12141,14
33,7-45
32-381401610040522,6667824M 16181,69
42,4-56
40-44,51501611042602,6678834M 16181,86
48,3-64
50-571651812545722,96810234M 16182,53
60,3-75
6576,1-1851814545902,961012234M 16183,06
8088,9-20020160501053,281013838M 16183,7
100-10822020180521253,681215838M 16184,62
114,3-131
125-1332502221055150481218838M 16186,3
139,7-156
150-15928522240551754,5101221238M 20227,75
168,3-184
(175)193,7-31524270602105,4101224238M 20229,85
200219,1-34024295622355,91016268312M 202211
250-26740526355702856,31216320312M 242615,6
273-292
300323,9-46028410783447,11216378412M 242622
350355,6-520304708239081216438416M 242631,2
-36828,8
400406,4-580325258544581216490416M 273039,3
-41936,3
(450)457-640345858549081216550420M 273044,3
500508-715346509054881216610420M 303361
600610-84036770956528,81218725520M 333675,4
700711-910368401007558,81218795524M 333677
800813-102538950105855101220900524M 3639101
900914-11254010501109551012201000528M 3639122
10001016-125542117012010581016221115528M 3942162
12001220-148548139013012621316301330532M 4548243
14001420-168552159014514651416301530536M 4548323
16001620-193058182016016681616351750540M 5256479
18001820-2130622020170187017,516351950544M 5256599
20002020-234566223018020722016402150548M 5662719

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Pipe fitting

Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.

Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.