Outside diameter of pipe		EEMUA145
		16Bar
ØD								Drilling			Theo.
		ØA	H	C	ØX	ØB	h1	ØG	N	Ød	weight
nominal	actual	mm	mm	mm	mm	mm	mm	mm	mm	mm	Kg/piece
inch	mm
0.5	16	89	48	14	23	12	8	60.3	4	15.9	0.74
0.75	25	98	52	16	32	21	7	69.8	4	15.9	1.04
1	30	108	56	16	42	25	8	79.4	4	15.9	1.36
1.25	38	117	57	17	51	33.03	8	88.9	4	15.9	1.7
1.5	44.5	127	62	20	61	39.53	7	98.4	4	15.9	2.38
2	57	152	64	25	73	52.16	9	120.6	4	19	3.93
2.5	76.1	178	70	27	91	71.23	8	139.7	4	19	5.62
3	88.9	190	70	27	105	84.08	8	152.4	4	19	6.27
4	108	229	76	27	135	102.13	8	190.5	8	19	9.53
6	159	279	89	27	192	153.75	8	241.3	8	22.2	13.65
8	219.1	343	98	31	246	211.1	8	298.4	8	22.2	21.19
10	267	406	98	31	305	257.97	8	362	12	25.4	29.52
12	323.9	483	98	35	365	312.83	8	431.8	12	25.4	44.77
14	368	533	99	41	400	354.22	8	476.2	12	28.6	57.27
16	419.1	597	106	43	457	404.17	8	539.8	16	28.6	74.4
18	457.2	635	113	45	505	441.5	8	577.8	16	31.8	88.16
20	508	698	118	45	559	490.5	8	635	20	31.8	106.2
24	610	813	137	49	664	589.5	8	749.3	20	34.9	153.15
28	711	927	145	72	748	687.5	8	864	28	34.9	255.28
32	813	1060	160	72	876	786.5	8	978	28	41.1	291.45
36	914	1168	175	72	984	883.5	8	1086	32	41.1	356.45

Outside diameter of pipe		EEMUA145
		20Bar
ØD								Drilling			Theo.
		ØA	H	C	ØX	ØB	h1	ØG	N	Ød	weight
0.5	16	89	48	14	23	12	8	60.3	4	15.9	0.74
0.75	25	98	52	16	32	21	7	69.8	4	15.9	1.04
1	30	108	56	16	42	25	8	79.4	4	15.9	1.36
1.25	38	117	57	17	51	33.03	8	88.9	4	15.9	1.7
1.5	44.5	127	62	20	61	39.53	7	98.4	4	15.9	2.38
2	57	152	64	25	73	52.16	9	120.6	4	19	3.93
2.5	76.1	178	70	27	91	71.23	8	139.7	4	19	5.62
3	88.9	190	70	27	105	84.08	8	152.4	4	19	6.27
4	108	229	76	27	135	102.13	8	190.5	8	19	9.53
6	159	279	89	27	192	152.38	8	241.3	8	22.2	13.99
8	219.1	343	98	31	246	210.1	8	298.4	8	22.2	21.57
10	267	406	98	31	305	255.93	8	362	12	25.4	30.47
12	323.9	483	98	35	365	309.74	8	431.8	12	25.4	46.56
14	368	533	99	41	400	351	8	476.2	12	28.6	59.49
16	419.1	597	106	43	457	399.84	8	539.8	16	28.6	78.03
18	457.2	635	113	45	505	438.5	8	577.8	16	31.8	91.08
20	508	698	118	45	559	486.5	8	635	20	31.8	110.65
24	610	813	137	49	664	584.5	8	749.3	20	34.9	160.79
28	711	927	145	72	748	681.5	8	864	28	34.9	249.09
32	813	1060	160	72	876	779.5	8	978	28	41.1	303.95
36	914	1168	175	72	984	876.5	8	1086	32	41.1	371.8

copper_nickel_c70600_solid_weld_neck_flange_eemua145_16bar_20bar

1.1 EEMUA 145 Scope and Design Basis

The details of solid 90/10 copper nickel weld neck flanges.

The range of sizes covered for these flanges is ½ in/16 mm – 36 in/914 mm*19. The thicknesses of these weld neck flanges have been determined generally in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, Appendix 2.

The following design criteria were used:

• Drilling and outside diameter dimensions of flange sizes ½ in/16 mm – 24 in/610 mm are in accordance with ASME B16.5-2013 and BS EN 1759-3:2003(34), whereas the larger sizes, 28 in/711 mm – 36 in/914 mm are in accordance with MSS-SP-44-2006.
• All calculations have been carried out using a design pressure of 20 bar at 38°C which additionally verifies the flanges for 16 bar at 75°C. The only difference between 16 bar and 20 bar flanges being the minimum bore and weld preparation.
• Gaskets: 1.5 mm.
• Bolting: aluminum bronze, ASTM B150-12(35) (alloy UNS C63000).

Design stresses used were as follows:

(i) Flanges: 68.6 N/mm2 .

(ii) Bolting: 172.4 N/mm2 up to 1 in size. 151.17 N/mm2 over 1 in size.

The major differences from ASME B16.5-2013 and BS EN 1759-3:2003, flanges are the length through hub, the thickness of flange and in some cases changes in the hub geometry to satisfy the design criteria, and permit the use of ring spanners.

This Specification does not specify hydraulic test pressures for flanges or components, details of which should be obtained from the appropriate application standards.

1.2 Pressure/Temperature Ratings

Pressure/temperature ratings are the maximum allowable working pressures (MAWP) at the temperatures shown in Appendix B.

If a flange rated at 16 bar is to be connected to a flange rated at 20 bar then that flanged joint shall be rated at 16 bar.

The temperature shown for a corresponding pressure rating is considered to be the same as that of the contained fluid.

1.3 Materials

1.3.1 Flanges

Flanges detailed in this section shall be manufactured in 90/10 Cu Ni alloy UNS 7060X, the composition and mechanical properties of which are specified.

1.3.2 Gaskets

The gaskets shall not be graphite. Neoprene type gaskets with a minimum Shore hardness of not less than 75 may be used. In order to ensure adequate seating, irrespective of materials, the gaskets shall be located within the bolt circle.

Note: Gaskets should not be used when mating with elastomer/rubber faced flanges.

*19 For purposes of this specification inch dimensions are nominal and metric dimensions refer to specified outside diameters.

*20 Alloy UNS 7060X is a modified form of the following national designated alloys – UNS 70600, as BS CW 352N and DIN 2.0872.

1.3.3 Bolting

Suitable material for bolting (stud bolts) for flanges to this Chapter is aluminum bronze alloy to ASTM B150 alloy UNS C63000. Other suitable copper alloy bolting materials may be used providing they have comparable corrosion resisting properties and are compatible with the parent flange material. In addition, the mechanical properties of the alternative material shall be equal to or greater than those of ASTM B150 alloy UNS C63000.

1.4 Manufacture

Solid weld neck flanges shall be manufactured by hot forging or cold forging followed by annealing. Other methods of manufacture shall be as agreed between Purchaser and manufacturer.

1.5 Information to Be Supplied By the Purchaser

The following shall be specified by the Purchaser on the order:

• The title and number of this Chapter (EEMUA Publication 234: Chapter 5).
• Size: inches and millimeters.
• The pressure rating: 16 bar or 20 bar, see Tables 27 and 28 and Appendix B.
• Whether it is his intention to inspect the material at the suppliers works (see Chapter 14).
• Whether manufacturer’s certificates are required (see Section 11).
• Whether individual cast analyses are required to be supplied (see Chapter 14).
• Whether any additional identification marking other than that specified herein is required.

1.6 Freedom from Defects

Flanges shall .be visibly clean and free from defects greater than 0.5 mm in depth, irregularities, scale or deposits.

 

1.7 Joint facings and surface finish

All flange jointing faces shall be machine finished and when compared by visual or tactile means with reference specimens they shall comply with the values shown in Table 26.

 

It is not intended that instrument measurements be taken on the faces themselves and the Ra and Rz values relate to the reference specimens.

 

Table 26 Surface Finish (Solid Weld Neck Flanges)

Note: The term “turning” includes any method of machining producing concentric or spiral grooves. * Ra and Rz are defined in BS 1134:2010.

 

 

 

 

 

 

1.8 Selection of Test Samples

For solid weld neck flanges produced by hot forging or cold forging followed by annealing, samples for determination of mechanical properties shall be selected in accordance with Table 20 of BS EN 12420:2014. The mechanical properties so determined shall comply with the requirements of Table 30 of this Publication.

 

Samples shall be selected from each cast for chemical analysis and shall comply with the requirements of Table 30 of this Publication.

 

 

 

 

 

 

1.9 Marking

 

1.9.1 All flanges 2 in/57 mm and above shall be individually clearly and permanently marked by means of a vibratory etching tool or electrochemical etching as follows:

 

• ) Purchase order number (PO).
• The number of this section (EEMUA Publication 234: Chapter 5).
• Size: inches and millimeters.
• The nominal pressure rating: 16 bar or 20 bar.
• Material designation – UNS 7060X*21.
• Batch traceability number (BTN).
• Manufacturer’s name or trademark (MTM).

 

Examples of marking:

 

P0  234/5  2/57  20  7060X  BTN  MTM.

 

Notes:

(i) Stamping with metallic stamps is not permitted.

(ii) Marking shall not be on the gasket contact surfaces.

 

 

1.9.2 Flanges in sizes 1% in/44.5 mm and smaller where it is not practical to apply the full requirements of Section 1.9.1 shall be marked as follows:

 

• ) Size: inches and millimeters.
• Nominal pressure rating 16 or 20 bar.
• Material designation UNS 7060X.
• Batch traceability number (BTN).
• Manufacturer’s name or trademark (MTM).

 

The remainder of the marking requirements shall be applied to indestructible type labels securely attached to the component. The labels shall be clearly and permanently marked.

 

1.10 Inspection and Testing

This section does not make routine provision for pressure testing of flanges. They shall, however, be dimensionally correct and be marked in accordance with this section. All flanges shall be capable of withstanding without leakage or signs of distress a hydraulic pressure as follows:

 

16 bar rated flanges, test pressure = 24 bar.

20 bar rated flanges, test pressure = 30 bar.