Manufacturer & Exporter - Alloy Steel & Carbon Steel Weld Neck A Flanges, DIN Weld Neck B Flanges, SS Weld Neck A/B Flanges in India.

Weld Neck Flanges A / B

ANSI B16.5 Weld Neck Flanges A, ASME B16.47 Weld Neck Flanges B, DIN Weld Neck Flanges A/B Manufacturer & Supplier in india.

WELD NECK FLANGES A/B SPECIFICATION :

Standard - ANSI/ASME : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673

B.S : BS4504, BS4504, BS1560, BS10

Size : 1/2" (15 NB) to 48" (1200NB)

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

Specialize :As per drawing

WELD NECK FLANGES A/B MATERIAL & GRADES :

Stainless Steel Weld Neck A/B Flanges : ASTM A182, A240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L

Carbon Steel Weld Neck A/B Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70

Alloy Steel Weld Neck A/B Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Duplex Steel Weld Neck A/B Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Super Duplex Weld Neck A/B Flanges : ASTM / ASME A/SA 182, A240 F 44, F 45, F51, F 53, F 55, F 60, F 61

Nickel Alloy Weld Neck A/B Flanges : Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Copper Alloy Weld Neck A/B Flanges : UNS No. C10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu-Ni-70/30)

Low Temperature Carbon Steel Weld Neck A/B Flanges : ASTM A350, LF2, LF3

Weld Neck A/B Flanges Dimensions :

Welding neck flange bores according ASME/ANSI B16.5-1996 Pipe Flanges & Flanged Fittings - can be found in the table below :

Welding Neck Flange Bores
Nominal Pipe Size (inches)	Outside Diameter (inches)	Inside Diameter (inches)
		Light Wall 1)	Schedule 20	Schedule 30	Standard Wall	Schedule 40	Schedule 60
1/2	0.840	0.674	-	-	0.622	0.622	-
3/4	1.050	0.884	-	-	0.824	0.824	-
1	1.315	1.097	-	-	1.049	1.049	-
1 1/4	1.660	1.442	-	-	1.380	1.380	-
1 1/2	1.900	1.682	-	-	1.610	1.610	-
2	2.375	2.157	-	-	2.067	2.067	-
2 1/2	2.875	2.635	-	-	2.469	2.469	-
3	3.500	3.260	-	-	3.068	3.068	-
3 1/2	4.000	3.760	-	-	3.548	3.548	-
4	4.500	4.260	-	-	4.026	4.026	-
5	5.563	5.295	-	-	5.047	5.047	-
6	6.625	6.357	-	-	6.065	6.065	-
8	8.625	8.329	8.125	8.071	7.981	7.981	7.813
10	10.750	10.420	10.250	10.136	10.020	10.020	9.750
12	12.750	12.390	12.250	12.090	12.000	11.938	11.626
14	14.000	13.500	13.376	13.250	13.250	13.124	12.812
16	16.000	15.500	15.376	15.250	15.250	15.000	14.688
18	18.000	17.500	17.376	17.124	17.250	16.876	16.500
20	20.000	19.500	19.250	19.000	19.250	18.812	18.376
24	24.000	23.500	23.250	22.876	23.250	22.624	22.062
30	30.000	29.376	29.000	28.750	29.250	-	-
36	36.000	35.376	35.000	34.750	35.250	34.500	-
42	42.000	-	-	-	41.250	-	-
48	48.000	-	-	-	47.250	-	-

Welding Neck Flange Bores
Nominal Pipe Size (inches)	Outside Diameter (inches)	Inside Diameter (inches)
		Extra Strong	Schedule 80	Schedule 100	Schedule 120	Schedule 140	Schedule 160	Double Extra Strong
1/2	0.840	0.546	0.546	-	-	-	0.464	0.252
3/4	1.050	0.742	0.742	-	-	-	0.612	0.434
1	1.315	0.957	0.957	-	-	-	0.815	0.599
1 1/4	1.660	1.278	1.278	-	-	-	1.160	0.896
1 1/2	1.900	1.500	1.500	-	-	-	1.338	1.100
2	2.375	1.939	1.939	-	-	-	1.687	1.503
2 1/2	2.875	2.323	2.323	-	-	-	2.125	1.771
3	3.500	2.900	2.900	-	-	-	2.624	2.300
3 1/2	4.000	3.364	3.364	-	-	-	-	2.728
4	4.500	3.826	3.826	-	3.624	-	3.438	3.152
5	5.563	4.813	4.813	-	4.563	-	4.313	4.063
6	6.625	5.761	5.761	-	5.501	-	5.187	4.897
8	8.625	7.625	7.625	7.437	7.187	7.001	6.813	6.875
10	10.750	9.750	9.562	9.312	9.062	8.750	8.500	8.750
12	12.750	11.750	11.374	11.062	10.750	10.500	10.126	10.750
14	14.000	13.000	12.500	12.124	11.814	11.500	11.188	-
16	16.000	15.000	14.312	13.938	13.564	13.124	12.812	-
18	18.000	17.000	16.124	15.688	15.250	14.876	14.438	-
20	20.000	19.000	17.938	17.438	17.000	16.500	16.062	-
24	24.000	23.000	21.562	20.938	20.376	19.876	19.312	-
30	30.000	29.000	-	-	-	-	-	-
36	36.000	35.000	-	-	-	-	-	-
42	42.000	41.000	-	-	-	-	-	-
48	48.000	47.000	-	-	-	-	-	-

1) Stainless steel Schedule 10S diameters are equal to Light Wall in sizes up to 12" and to Schedule 10 above.

Marking & Packing

Our products like flanges are packaged to make sure that there’s no damage throughout transit. Just in case of exports, customary export packaging is completed in wooden boxes or cases. All flanges are marked with Trademark (Company’s LOGO), Grade, Size and Lot No. On requests we can do custom marking on our products.

Test Certificates

Manufacturer Test Certificate as per EN 10204-3.1, EN 10204-3.2, Raw Materials Certificate, NABL approved Lab Test Report, 100% Radiography Test Report, Third Party Inspection Report etc.