Universe Metal & Alloy stands tall as one of India's premier Weld Neck Flange Manufacturers, Suppliers, Stockists, and Exporters delivering exceptional quality and service to clients worldwide. Our commitment to excellence, combined with extensive expertise in Stainless Steel Weld Neck Flanges, sets us apart as leaders in the industry.
Crafted with precision and care, our Stainless Steel Weld Neck Flanges Exporters are engineered to meet the most demanding requirements of various industries. Rigorous testing procedures, adhering to ASTM, ASME, and ANSI standards, ensure superior toughness and hardness, guaranteeing reliable performance in critical applications.
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Universe Metal & Alloy offers a comprehensive range of Stainless Steel Weld Neck Flanges Manufacturers, tailored to meet diverse customer needs. Whether you require specific sizes, thicknesses, or coatings, our dedicated sales experts are at your service, providing prompt assistance and confirming delivery schedules to your nearest port.
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Our ASTM A182 Weld Neck Flanges are renowned for their exceptional quality, designed using high-grade raw materials and cutting-edge technology in compliance with international standards. Available in a variety of sizes and shapes, our Stainless Steel Weld Neck Flanges are ideal for applications requiring high-pressure piping, ensuring optimal gas and fluid flow with precise bore alignment.
The unique design of Weld Neck Flanges, also known as tapered hub or high-hub flanges, effectively transfers stress to pipes, reducing stress concentrations at the flange base. These flanges excel in severe and critical conditions, including high pressure, extreme temperatures, volatile fluids, and sub-zero environments.
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Universe Metal & Alloy's Weld Neck Flange Suppliers division boasts integrated forging units capable of producing a wide range of flanges to meet various specifications, including ASME/ANSI, EN, DIN, AFNOR, AWWA, GOST, BS, JIS, AS, MSS, SA, UNI, and more. Whether it's Forged Flanges or Plate Flanges, we offer sizes ranging from 12" to 40", catering to industrial needs with unparalleled quality and customer satisfaction.
In addition to Weld Neck Flanges, Universe Metal & Alloy is a trusted supplier of Blind Flanges, Threaded Flanges, and Long Weld Flanges, providing comprehensive solutions for diverse piping requirements. Our commitment to excellence, superior quality, and unmatched service make us the preferred choice for all flange needs. With a focus on innovation and customer satisfaction, Universe Metal & Alloy continues to lead the way in the Weld Neck Flange industry, delivering excellence with every product and service. Contact us today to experience the difference and elevate your piping systems with our premium quality Stainless Steel Weld Neck Flanges.
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Specification of Weld Neck Flanges
ASME B16.5 Weld Neck Flange Size Chart |
1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
Weld Neck Pipe Flange Standards |
ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
Weld Neck Reducing Flange Pressure Rating ANSI |
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Weld Neck Rtj Flange |
SWRF Flanges Pressure Calculation in DIN |
6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Weld Neck Reducing Flange |
JIS |
5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K SWRF Flanges |
UNI |
6Bar 10Bar 16Bar 25Bar 40Bar Weld Neck Pipe Flange |
EN |
6Bar 10Bar 16Bar 25Bar 40Bar Weld Neck Sae Flange |
Coating |
Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
Most common types of Weld Neck Hub Flange |
Forged / Threaded / Screwed / Plate |
Test Certificates |
EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc |
Production technique |
- Forged, Heat treated and machined
|
Connect Type/ Flange Face Type |
Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
Special design |
As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″)
Equal and Reducing Configurations
|
Test |
Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
Equipment |
Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
Origin |
Indian / West Europe / Japan / USA / Korean |
Manufacturer of |
ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
Weld Neck Reducing Flange: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange
- B.S: BS4504 , BS3293, BS1560, BS10
- AS 2129: Table D; Table E; Table H
- ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
- ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
- ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
- American standard (ANSI)
- German (DIN)
- British standard (BS)
- DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 Weld Neck Sae Flange
- The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
|
Weld Neck Pipe Flange Uses & application |
- Bitumen upgraders.
- Heavy oil refineries.
- Nuclear power (mostly seamless).
- Petrochemicals and acids.
|
Export to |
Ireland, Singapore, Indonesia, Ukraine, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Korea, Iran, India, Egypt, Oman, Dubai, Peru, etc |
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 |
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Dimensions of Weld Neck Flange
|
Drilling |
Nominal Bore Weld Neck |
Dia.(D) |
Thick.(E) |
Dia.(F) |
Dia.(B) |
Dia.(A) |
Height1(H) |
Nbr |
Holes |
Dia.(C) |
1/2″
|
90
|
11.2
|
35.05
|
30
|
22.2
|
14
|
4
|
15.87
|
60.3
|
3/4″
|
100
|
12.7
|
42.92
|
38
|
27.7
|
14
|
4
|
15.87
|
69.9
|
1″
|
110
|
14.3
|
50.80
|
49
|
34.5
|
16
|
4
|
15.87
|
79.4
|
1 1/4″
|
115
|
15.9
|
63.50
|
59
|
43.2
|
19
|
4
|
15.87
|
88.9
|
1 1/2″
|
125
|
17.5
|
73.15
|
65
|
49.5
|
21
|
4
|
15.87
|
98.4
|
2″
|
150
|
19.1
|
91.94
|
78
|
61.9
|
24
|
4
|
19.05
|
120.7
|
2 1/2″
|
180
|
22.3
|
104.65
|
90
|
74.6
|
27
|
4
|
19.05
|
139.7
|
3″
|
190
|
23.9
|
127.00
|
108
|
90.7
|
29
|
4
|
19.05
|
152.4
|
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150# ANSI Weld Neck Flanges
Nominal
Pipe
Size |
"A"
(O.D.) |
"B"
(Thk.) |
"C"
(RF Dia.) |
"D"
(B.C.D.) |
# Bolt
Holes |
Dia. of
Bolt Holes |
Approx.
Weight |
1/2" |
3-1/2 |
7/16 |
1-3/8 |
2-3/8 |
4 |
5/8 |
2 |
3/4" |
3-7/8 |
1/2 |
1-11/16 |
2-3/4 |
4 |
5/8 |
2 |
1" |
4-1/4 |
9/16 |
2 |
3-1/8 |
4 |
5/8 |
2 |
1-1/4" |
4-5/8 |
5/8 |
2-1/2 |
3-1/2 |
4 |
5/8 |
3 |
1-1/2" |
5 |
11/16 |
2-7/8 |
3-7/8 |
4 |
5/8 |
3 |
2" |
6 |
3/4 |
3-5/8 |
4-3/4 |
4 |
3/4 |
4 |
2-1/2" |
7 |
7/8 |
4-1/8 |
5-1/2 |
4 |
3/4 |
7 |
3" |
7-1/2 |
15/16 |
5 |
6 |
4 |
3/4 |
9 |
3-1/2" |
8-1/2 |
15/16 |
5-1/2 |
7 |
8 |
3/4 |
13 |
4" |
9 |
15/16 |
6-3/16 |
7-1/2 |
8 |
3/4 |
17 |
5" |
10 |
15/16 |
7-5/16 |
8-1/2 |
8 |
7/8 |
20 |
6" |
11 |
1 |
8-1/2 |
9-1/2 |
8 |
7/8 |
27 |
8" |
13-1/2 |
1-1/8 |
10-5/8 |
11-3/4 |
8 |
7/8 |
47 |
10" |
16 |
1-3/16 |
12-3/4 |
14-1/4 |
12 |
1 |
67 |
12" |
19 |
1-1/4 |
15 |
17 |
12 |
1 |
123 |
14" |
21 |
1-3/8 |
16-1/4 |
18-3/4 |
12 |
1-1/8 |
139 |
16" |
23-1/2 |
1-7/16 |
18-1/2 |
21-1/4 |
16 |
1-1/8 |
187 |
18" |
25 |
1-9/16 |
21 |
22-3/4 |
16 |
1-1/4 |
217 |
20" |
27-1/2 |
1-11/16 |
23 |
25 |
20 |
1-1/4 |
283 |
24" |
32 |
1-7/8 |
27-1/4 |
29-1/2 |
20 |
1-3/8 |
415 |
1/16" raised face included in flange thickness. |
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Weight Chart Of PN16 Weld Neck Flanges
NPS (Inches) |
DN (mm) |
FLANGE OD A MM |
FLANGE THICKNESS D MM |
SLIP ON FLANGE WEIGHT (KGS) |
WELD NECK FLANGE WEIGHT (KGS) |
Weld Neck FLANGEs WEIGHT (KGS) |
1/ 2 |
15 |
88.9 |
11.2 |
0.4 |
0.5 |
0.4 |
3/ 4 |
20 |
98.6 |
12.7 |
0.6 |
0.7 |
0.6 |
1 |
25 |
108 |
14.2 |
0.8 |
1 |
0.9 |
1 1/ 4 |
32 |
117.3 |
15.7 |
1 |
1.3 |
1.2 |
1 1/ 2 |
40 |
127 |
17.5 |
1.3 |
1.7 |
1.5 |
2 |
50 |
152.4 |
19.1 |
2.1 |
2.6 |
2.4 |
2 1/ 2 |
65 |
177.8 |
22.4 |
3.3 |
4.1 |
3.9 |
3 |
80 |
190.5 |
23.9 |
3.9 |
4.9 |
4.9 |
3 1/ 2 |
90 |
215.9 |
23.9 |
4.8 |
6.1 |
6.2 |
4 |
100 |
228.6 |
23.9 |
5.3 |
6.8 |
7.0 |
5 |
125 |
254 |
23.9 |
6.1 |
8.6 |
8.6 |
6 |
150 |
279.4 |
25.4 |
7.5 |
10.6 |
11.3 |
8 |
200 |
342.9 |
28.4 |
12.1 |
17.6 |
19.6 |
10 |
250 |
406.4 |
30.2 |
16.5 |
24 |
28.6 |
12 |
300 |
482.6 |
31.8 |
26.2 |
36.5 |
43.2 |
14 |
350 |
533.4 |
35.1 |
34.6 |
48.4 |
58.1 |
16 |
400 |
596.9 |
36.6 |
44.8 |
60.6 |
76.1 |
18 |
450 |
635 |
39.6 |
48.9 |
68.3 |
93.7 |
20 |
500 |
698.5 |
42.9 |
61.9 |
84.5 |
122.0 |
24 |
600 |
812.8 |
47.8 |
86.9 |
115 |
185.0 |
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