Duplex Orifice Flanges Manufacturers India
PED Approved Duplex Steel Orifice Flanges Manufacturer & Suppliers
PED Certified Duplex Steel Orifice Flanges Manufacturer & Suppliers
Fitwel Industries LLP is leading professional exporter of Duplex Steel & Super Duplex Steel orifice Flanges in Mumbai India. We have extensive experience in manufacturing, exporting & supplying Duplex stainless steel Orifice flange, Super Duplex Steel Orifice Flange, Duplex Steel Orifice Flange, Super Duplex orifice Flange in Mumbai India. These UNS s32750 Super duplex orifice flange components used for metering the volumetric flow rate of liquids and gasses that are being transported through a pipe. When two Orifice Flange Jis 16k are used together, they have known an orifice flange union. The range of UNS s32760 Super duplex orifice Orifice flange covers all standard sizes and ranges, produced in all common flange materials. API 6A Orifice Flange generally comes with either a Raised Face or RTJ (Ring Type Joint) facings. UNS s31803 Duplex Orifice Flange includes the orifice plate with data tap, a pair of flanges with integrated taps, a set of gaskets, bolts, and nuts, and a jackscrew to assist in separating the flanges for orifice inspection. UNS s32205 Duplex Orifice Flange cover all standard sizes and ranges, and all common Flange materials.
We also offer these products at customized sizes and shapes to our respected clients. We Export Slip On Flanges in Qatar, Kingdom Of Bahrain, Saudi Arabia, Indonesia, United States, Singapore, Malaysia, Turkey, UAE, Russia, Ukraine, South Africa, Australia, etc.
ASME B16.5 Orifice Flanges Specification :
Standard : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
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.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
BS : BS4504 , BS4504, BS1560, BS10
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
ANSI B16.47 Orifice Flanges Material & Grades:
Duplex & Super Duplex Steel Orifice Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No. S32750)
All Classes Dimensions of Orifice Plate Flanges
NPS |
DIA
D3 |
L |
N |
P |
T |
1/2 |
13 |
0.24 |
1.5 |
30 |
1.5 |
3/4 |
19 |
0.34 |
1.5 |
30 |
1.5 |
1 |
25 |
0.42 |
2 |
30 |
2 |
1½ |
40 |
0.64 |
3 |
30 |
3 |
2 |
51 |
1 |
6 |
30 |
3 |
3 |
76 |
1.5 |
8 |
40 |
3 |
4 |
102 |
1.5 |
10 |
40 |
5 |
6 |
152 |
1.5 |
15 |
40 |
5 |
8 |
202 |
3.5 |
15 |
40 |
7 |
10 |
253 |
3.5 |
19 |
45 |
7 |
12 |
302 |
3.5 |
20 |
45 |
10 |
14 |
341 |
6 |
20 |
45 |
10 |
16 |
392 |
6 |
21 |
50 |
11 |
18 |
443 |
8 |
23 |
50 |
13 |
20 |
494 |
8 |
25 |
50 |
16 |
24 |
595 |
10 |
29 |
60 |
18 |
|
NPS |
ASME B16.5 Flange Class |
150 |
300 |
600 |
900 |
1500 |
2500 |
S |
1/2 |
110 |
110 |
110 |
115 |
115 |
120 |
3/4 |
110 |
110 |
110 |
115 |
115 |
120 |
1 |
110 |
115 |
115 |
120 |
120 |
125 |
1½ |
110 |
120 |
120 |
125 |
125 |
130 |
2 |
110 |
115 |
115 |
125 |
125 |
130 |
3 |
115 |
120 |
120 |
125 |
135 |
140 |
4 |
115 |
125 |
125 |
130 |
140 |
150 |
6 |
115 |
120 |
130 |
135 |
145 |
170 |
8 |
120 |
125 |
135 |
145 |
155 |
170 |
10 |
120 |
130 |
145 |
145 |
165 |
190 |
12 |
125 |
135 |
140 |
145 |
165 |
195 |
14 |
130 |
140 |
145 |
150 |
175 |
|
16 |
130 |
145 |
150 |
155 |
180 |
|
18 |
130 |
145 |
155 |
160 |
195 |
|
20 |
135 |
150 |
155 |
165 |
205 |
|
24 |
135 |
160 |
165 |
190 |
2205 |
|
|
NPS |
ASME B16.5 Flange Class |
150 |
300 |
600 |
900 |
1500 |
2500 |
DIA
D4 |
1/2 |
48 |
54 |
54 |
64 |
64 |
70 |
3/4 |
57 |
67 |
67 |
70 |
70 |
77 |
1 |
67 |
73 |
73 |
80 |
80 |
86 |
1½ |
86 |
96 |
96 |
99 |
99 |
118 |
2 |
105 |
111 |
111 |
143 |
143 |
146 |
3 |
137 |
149 |
149 |
168 |
175 |
197 |
4 |
175 |
181 |
194 |
206 |
209 |
235 |
6 |
222 |
250 |
266 |
289 |
282 |
317 |
8 |
279 |
307 |
320 |
358 |
352 |
387 |
10 |
339 |
361 |
399 |
434 |
434 |
475 |
12 |
409 |
422 |
456 |
497 |
520 |
549 |
14 |
450 |
485 |
491 |
519 |
577 |
|
16 |
513 |
539 |
564 |
573 |
640 |
|
18 |
548 |
596 |
611 |
637 |
703 |
|
20 |
605 |
653 |
681 |
697 |
754 |
|
24 |
716 |
773 |
789 |
836 |
899 |
|
Tolerances
D1 & D2 = ± 1%
D3 = ± 1 mm
D4 = 0/-0.4 mm
L = ± 0.1 mm
N = see note 6
P = ± 0.1 mm
S = ± 0.1 mm
T = see note 2
Notes:
- Marking
The Upstream side of the orifice tab shall be stamped at the indicated locations with:
- the word UPSTREAM
- the Tag Number
- the ASME flange class, followed by RF
- the nominal pipe size (NPS)
- the measured orifice D1 (in mm)
- the material of the orifice plate
- the type of orifice plate (Square, Restriction etc.)
Letter height approx. 4 mm
- Welding of tab
Tab may be integral with orifice plate up to and including 7 mm plate thickness.
In other cases full penetration joint to be applied.
- Finish of plate
The upstream and downstream faces of the orifice plate to a diameter equal to D3 shall have a surface roughness Ra ≤ 0.8 µm ASME B46.1.
The remaining annular part (between D4 & D3) of upstream and downstream faces shall have a surface roughness Ra between 3.2 and 3.6 µm ASME B46.1. This finish shall be obtained by machining with a round nosed cutting tool having a 0.8 mm radius at a feed rate between 0.35 and 0.45 mm per revolution.
- Concentricity
The centre of the orifice shall not differ from the centre of the plate by more than 0.1 mm for ≤ NPS 8 and 0.2 mm for > NPS 8.
- Finish of throat
The throat and outlet cone shall have a surface roughness Ra ≤ 0.4 µm ASME B46.1.
All edges shall be sharp and free from burrs, so that when viewed with the naked eye no light is reflected by the corners.
- Plate thickness
The difference between any two measurements of plate thickness, for annular part D1-D3, shall not differ by more than 0.001 DN in mm.
The plate shall not depart from flatness along any diameter by more than 0.01 D3.
Tolerance for N shall be:
N ≤ 6 mm +0.1/-0.25 mm
N > 6 mm +0/-1.5 mm
Thickness for annular part D3-D4, may be slightly less, max 0.05 mm, due to surface finishing difference between D1-D3 & D3-D4. (see note 3)
General notes:
Dimensions are in millimeters unless otherwise indicated.
Allowable pressure difference 20 bar for temperatures up to 400 °C and D1/D3 ≥ 0.1. The thickness of the plate needs to be verified for strength in case the pressure difference is higher than 20 bar and/or the temperature is beyond 400 °C. Based on the outcome of the calculation the thickness of the plate needs to be adjusted.
DIA D1 & DIA D2 - to be specified by purchaser.
Material to be specified by purchaser.
Other Related Products:
We Supply Orifice Flanges For Various Application Industry Like :

Oil & Gas Industries

Petrochemical Industries

Engineering Industries

Chemical Industries

Sugar Industries

Power Generation Industries

Fertilizers Industries

Food Processing Industries
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