EN 1092-1 Type 35 Weld Ring Neck

Drawing, Construction, Function & Manufacture

The EN 1092-1 Type 35 weld ring neck is a collar, that is always used with a Type 02 loose plate flange. As illustrated in Figure-1, it consists of the straight pipe length (“neck”) and a flared pipe end (“ring”). The thickness of the flared section is thicker than that of a Type 36 counterpart. It can be viewed as a lap joint stub end with reinforced shoulder thickness. In such a flange assembly, its “neck” end is joined to the pipe by welding, while the loose plate flange mounts to the back surface of the “ring” shoulder, pressing it against the gasket to form a tight seal. EN 1092-1 Type 35 weld neck rings are available in p/T ratings of PN 2.5, PN 6, PN10, PN 16, PN 25 and PN 40. Generally, the Type 35 weld ring neck collar shall be manufactured by a forging process or by welding a ring plate to a seamless pipe. It may be made out of austenitic stainless steels (such as 1.4307/ 304L, 1.4404/ 316L, 1.4571/ 316Ti, etc.) and duplex stainless steels (such as 1.4462/ S32205, 1.4410/ S32750, etc.).

EN 1092-1 Loose Plate Flanges & Collars
Type 02	Type 04	Type 32	Type 33
Type 34	Type 35	Type 36	Type 37

*Click to view specifications for all EN 1092-1 loose plate flanges & collars.

Weld Ends Preparation & Surface Finishes

EN 1092-1 Type 35 weld ring neck may be furnished with two types of welding ends, either Chamfer A or Chamfer B, as illustrated in Figure-2. The values of wall thickness (S, Sp) and outside diameter of neck are presented in the two tables below. For sizes highlighted in light green, Chamfer A shall be furnished; For others, Chamfer B shall be furnished.

ΦA	S for PN 2.5 mm	Sp for PN 2.5 mm	S for PN 6 mm	Sp for PN 6 mm	S for PN 10 mm	Sp for PN 10 mm
17.2	3	2	3	2	3	2
21.3	3	2	3	2	3	2
26.9	3	2	3	2	3	2
33.7	3	2	3	2	3	2
42.4	3	2	3	2	3	2
48.3	3	2	3	2	3	2
60.3	3	2	3	2	3	2
76.1	4	2	4	2	4	2
88.9	4	2	4	2	4	2
114.3	4	2	4	2	4	2
139.7	5	2	5	2	5	2
168.3	6	2	6	2	6	2
219.1	6	2.6	6	2.6	6	2.6
273	8	3.2	8	3.2	8	3.2
323.9	8	3.2	8	3.2	8	3.2
355.6	8	3.2	8	3.2	8	3.2
406.4	8	3.2	8	3.2	8	3.2
457	8	3.6	8	3.6	8	3.6
508	8	4	8	4	8	4
610	8	5	8	5	10	5
711	8	5	8	5	10	6.3
813	10	6.3	10	6.3	12	6.3
914	10	6.3	10	6.3	12	8
1016	12	8	12	8	12	8
1219	14	10	14	10	16	10

*Dimensions for welding ends of Type 35, PN 2.5, PN 6 and PN 10.

ΦA	S for PN 16 mm	Sp for PN 16 mm	S for PN 25 mm	Sp for PN 25 mm	S for PN 40 mm	Sp for PN 40 mm
17.2	3	2	3	2	3	2
21.3	3	2	3	2	3	2
26.9	3	2	3	2	3	2
33.7	3	2	3	2	3	2
42.4	3	2	3	2	3	2
48.3	3	2	3	2	3	2
60.3	3	2	4	2.6	4	2.6
76.1	4	2	5	2.6	5	2.6
88.9	4	2	6	2.6	6	2.6
114.3	4	2	6	3.2	6	3.2
139.7	5	2	6	3.2	6	3.2
168.3	6	2	8	3.2	8	4
219.1	6	2.6	8	3.2	10	5
273	8	3.2	10	5	12	6.3
323.9	10	4	10	6.3	12	8
355.6	10	4	12	6.3	14	8
406.4	12	5	14	8	16	10
457	12	5	15	8	-	-
508	12	6.3	16	10	-	-
610	12	8	18	10	-	-
711	14	8	20	14.2	-	-
813	16	10	20	14.2	-	-
914	18	10	-	-	-	-
1016	18	10	-	-	-	-

*Dimensions for welding ends of Type 35, PN 16, PN 25 and PN 40.

Surface finishes for Type 35: (1) surface finishes for outside diameter: Ra ≤ 25μm, Rz ≤ 160μm; (2) surface finishes for center bore diameter: Ra ≤ 25μm, Rz ≤ 160μm; (3) surface finishes for jointing faces: 3.2μm ≤ Ra ≤ 12.5μm, 12.5μm ≤ Ra ≤ 50μm. The jointing faces shall be machined by a turning process.

Dimensions, Masses & Tolerances

DN	F	H4	d1	Mass
10	5	28	35	0.08
15	5	30	40	0.09
20	6	32	50	0.17
25	7	35	60	0.26
32	8	35	70	0.36
40	8	38	80	0.45
50	8	38	90	0.53
65	8	38	110	0.70
80	10	42	128	1.0
100	10	45	148	1.3
125	10	48	178	1.9
150	10	48	202	2.4
200	11	55	258	3.9
250	12	60	312	5.8
300	12	62	365	6.8
350	13	62	415	9.5
400	14	65	465	11.6
450	15	65	520	15.0
500	16	68	570	15.9
600	16	70	670	23.0
700	16	70	775	30.9
800	16	70	880	41.5
900	16	70	980	50.0
1000	18	70	1080	58.9
1200	20	90	1280	56.3

*Dimensions & Masses for Type 35 of EN 1092-1 PN 2.5.

DN	F	H4	d1	Mass
10	5	28	35	0.08
15	5	30	40	0.09
20	6	32	50	0.17
25	7	35	60	0.26
32	8	35	70	0.36
40	8	38	80	0.45
50	8	38	90	0.53
65	8	38	110	0.70
80	10	42	128	1.0
100	10	45	148	1.3
125	10	48	178	1.9
150	10	48	202	2.4
200	11	55	258	3.9
250	12	60	312	5.8
300	12	62	365	6.8
350	13	62	415	9.5
400	14	65	465	11.6
450	15	72	520	15.0
500	16	75	570	15.9
600	16	70	670	23.0
700	16	70	775	30.9
800	16	70	880	41.5
900	16	70	980	50.0
1000	18	70	1080	58.9
1200	20	90	1295	93.2

*Dimensions & Masses for Type 35 of EN 1092-1 PN 6.

DN	F	H4	d1	Mass
10	5	35	40	0.08
15	5	38	45	0.09
20	6	40	58	0.17
25	7	40	68	0.26
32	8	42	78	0.36
40	8	45	88	0.45
50	8	45	102	0.53
65	8	45	122	0.70
80	10	50	138	1.0
100	10	52	158	1.3
125	10	55	188	1.9
150	10	55	212	2.4
200	11	62	268	3.9
250	12	68	320	5.8
300	12	68	370	6.8
350	13	68	430	9.5
400	14	72	482	11.6
450	15	72	532	15.0
500	16	75	585	15.9
600	18	80	685	23.0
700	20	80	800	30.9
800	20	90	905	41.5
900	22	95	1005	50.0
1000	24	95	1110	58.9
1200	26	115	1330	93.2

*Dimensions & Masses for Type 35 of EN 1092-1 PN 10.

DN	F	H4	d1	Mass
10	5	35	40	0.08
15	5	38	45	0.09
20	6	40	58	0.17
25	7	40	68	0.26
32	8	42	78	0.36
40	8	45	88	0.45
50	8	45	102	0.53
65	8	45	122	0.70
80	10	50	138	1.0
100	10	52	158	1.3
125	10	55	188	1.9
150	10	55	212	2.4
200	11	62	268	3.9
250	12	70	320	5.8
300	14	78	378	9.5
350	18	82	438	15.2
400	20	85	490	18.7
450	22	87	550	24.4
500	22	90	610	29.1
600	24	95	725	40.3
700	26	100	795	45.2
800	28	105	900	59.9
900	30	110	1000	75.6
1000	35	120	1115	106.46

*Dimensions & Masses for Type 35 of EN 1092-1 PN 16.

DN	F	H4	d1	Mass
10	5	35	40	0.08
15	5	38	45	0.09
20	6	40	58	0.17
25	7	40	68	0.26
32	8	42	78	0.36
40	8	45	88	0.45
50	10	48	102	0.69
65	11	52	122	1.1
80	12	58	138	1.6
100	14	65	162	2.4
125	16	68	188	3.2
150	18	75	218	4.6
200	18	80	278	6.6
250	18	88	335	10.0
300	20	92	395	15.3
350	22	100	450	20.8
400	24	110	505	28.6
450	26	110	615	34.4
500	28	125	720	45.8
600	30	125	820	61.0
700	30	125	930	73.0
800	35	135	1030	97.0

*Dimensions & Masses for Type 35 of EN 1092-1 PN 25.

DN	F	H4	d1	Mass
10	5	35	40	0.08
15	5	38	45	0.09
20	6	40	58	0.17
25	7	40	68	0.26
32	8	42	78	0.36
40	8	45	88	0.45
50	10	48	102	0.69
65	11	52	122	1.1
80	12	58	138	1.6
100	14	65	162	2.4
125	16	68	188	3.2
150	18	75	218	4.6
200	20	88	285	8.8
250	22	105	345	14.4
300	25	115	410	20.7
350	28	125	465	30.7
400	32	135	535	45.4

*Dimensions & Masses for Type 35 of EN 1092-1 PN 40.

Tolerances: (1) ΦA: for size ≤ DN150, ±0.75% & min. ±0.3mm; for size > DN150, ±1% & max. ±3.0mm. (2) S: for S ≤ 8mm, (+15%, -10%); for S > 8mm, (+15%, -5%). (3) S_p: for S ≤ 6mm, (+1.0mm, 0mm); for S > 6mm, (+2.0mm, 0mm). (4) H₄: for size ≤DN80, ±1.5mm; for DN80 < size ≤ DN250, ±2.0; for size > DN 250, ±3.0mm. (5)F: for F ≤ 18mm, ±1.0mm; for F > 18mm, ±1.5mm. (6) d₁: for size ≤ DN250, (+2.0mm, -1.0mm); for size > DN250, (+3.0mm, -1.0mm).