Showing posts with label ASTM A182 Flanges. Show all posts
Showing posts with label ASTM A182 Flanges. Show all posts

Everything You Need to Know About ASTM A182 F22 Cl.3 Flanges – Anita Steel & Metals


Introduction:

In high-pressure, high-temperature applications, the reliability and strength of components like flanges are critical. One such trusted material is ASTM A182 F22 Class 3, a low-alloy steel containing chromium and molybdenum. At Anita Steel & Metals, we offer a full range of ASTM A182 F22 Cl.3 flanges that meet stringent global standards, including IBR and NACE compliance, ensuring safe, efficient, and durable performance in demanding industrial environments.

What is ASTM A182 F22 Cl.3?

ASTM A182 F22 Cl.3 is a forged low alloy steel, primarily used in high-temperature services such as boilers, pressure vessels, and petrochemical pipelines. The "Class 3" variant refers to its enhanced mechanical properties and higher hardness compared to Class 1 or Class 2.

Chemical Composition:

ElementContent (%)
Carbon (C)0.05 – 0.15
Manganese0.30 – 0.60
Silicon0.50 max
Chromium1.90 – 2.60
Molybdenum0.87 – 1.13
Phosphorus≤ 0.035
Sulfur≤ 0.040

This composition offers excellent strength, hardness, and corrosion resistance, especially in elevated temperature environments.

Mechanical Properties (Class 3):

PropertyValue
Tensile Strength≥ 585 MPa
Yield Strength≥ 380 MPa
Elongation≥ 20%
Hardness179 – 235 HBW

These mechanical values make it suitable for high-pressure steam and process applications.

Technical Specifications:

  • Standards: ASTM A182 / ASME SA182

  • Face Type: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)

  • Dimensions: ASME B16.5 / B16.47 (Series A & B)

  • Pressure Rating: Class 150 to 2500

  • Size Range: ½” to 48” (DN15 to DN1200)

Product Types Available:

  • WNRF – Weld Neck Raised Face

  • WNRTJ – Weld Neck Ring Type Joint

  • SWRF – Socket Weld Raised Face

  • SWRTJ – Socket Weld Ring Type Joint

  • SORF – Slip-On Raised Face

  • BLRF – Blind Raised Face

  • BLRTJ – Blind Ring Type Joint

  • LJRF – Lap Joint Raised Face

We also offer custom-machined flanges as per client drawings.

Equivalent Grades:

  • EN: 10CrMo9-10

  • DIN: 1.7380

  • BS: 622B

  • JIS: SFVC2B / SCMV4

Key Features:

  • High strength under elevated temperatures

  • IBR Form III certified

  • NACE MR0175 compliant for sour service

  • CNC machined for precision and durability

  • Full traceability with MTC (EN 10204 3.1)

  • Excellent resistance to thermal fatigue and corrosion

Melting & Manufacturing Process:

  • Melting Method: Electric Arc Furnace / Vacuum Arc Remelting (VAR)

  • Heat Treatment: Normalizing & Tempering

  • Surface Finish: Rust preventive oil, blackodised or as per request

  • Inspection: PMI, UT, NDT, Hydro, NACE, IGC (as applicable)

Applications:

  • Thermal Power Plants – Superheated steam lines

  • Refineries – High-pressure piping and reactors

  • Petrochemical Units – Corrosive and high-temperature services

  • Oil & Gas – Sour gas applications (NACE approved)

  • Boilers & Pressure Vessels – IBR certified piping

  • Heat Exchangers – Flanged tube sheets & headers

Packaging Details:

  • Bubble-wrapped or oil-coated

  • Individually tagged with Heat No., Grade, Size, and Standard

  • Packed in export-quality wooden boxes or fumigated pallets

  • Option for logo-marking & QR-code-based traceability

Our Brand – Anita Steel & Metals:

Established in 1970, Anita Steel & Metals is a trusted manufacturer and stockist of Alloy Steel Flanges in India, known for quality, prompt service, and global supply capability.

All flanges are available with:
✔️ MTC (EN 10204 3.1)
✔️ IBR Certification (Form III)
✔️ NACE MR0175 Compliance
✔️ ISO 9001:2015 System Approval

Contact Us:

Anita Steel & Metals
📧 Email: info@anitasteel.com
🌐 Website: www.anitasteel.com

https://whatsapp.com/channel/0029VaES8fp9RZAfyApXb03c

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Mumbai, INDIA Ground Floor, Shop No. 1, Neo Amity, 2nd Carpenter St, Charni Road East, Cawasji Patel Tank, Bhuleshwar, Mumbai, Maharashtra 400004, India

When is it best to use a lap joint flange?

lap-joint-flangeIs its good for very expensive materials like tantalum and zirconium and other specialty alloys like Hastelloy or Inconel due to reduced cost of sleeve vs solid flange. Lap joint flanges are unique in that they are made of two pieces, the flange itself and the stub end. This allows for the flange to be made of a lower cost steel, while only the stub end requires specialty materials.
Lap Joint Flange Uses
Economy
Because a lap joint flange has a two piece configuration, it offers a way to cut cost when piping systems requires a high cost alloy for all “wetted” parts to reduce corrosion. In this situation, it is only required for the stub-end to be can be made of the higher cost corrosion-resistant material, where the flange itself can be the produced from lower cost steel.
Ease of Work
By using lap joint flanges, work can be simplified in situations that require frequent and rapid disassemble and assembly during the operation of a plant. The ability to spin that backing flange compensates for misalignment of the bolt holes during assembly.
Physical Features
Flange
1.  The backside, has a slight shoulder that is square cut at the center or pipe hole
2.  The front side has a flat face with a filleted (rounded) center hole to match the filleted back face of the stub end. Here the stub end will wrap tightly around the center hole of the flange.

StubEnd
1.Shape like a short piece of pipe with a weld bevel on one. This portion of the stub end is also called the sleeve.
2.  Narrow shoulder on the flange facing end called is the hub. The back face of the hub has a rounded transition (or inside fillet) that joins the hub to the sleeve.



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Lap Joint Flanges


Lap Joint flange normally consists of an inner section the same size as the pipe and an outer ring with bolt holes. The use of Lap Joint Flanges at points where severe bending stress occurs should be avoided.
Stainless Steel Lap Joint Flanges:ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Carbon Steel Lap Joint 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 Lap Joint Flanges:ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex Steel Lap Joint 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)
In Form:SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
Specialize:As per drawing
Standard:ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
Connection Type:Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue & Groove, Small Tongue & Groove.
Type of Flanges:Weld Neck Flanges - WNRF, Socket Weld Flanges - SWRF, Slip On Raise Face - SORF, Blind Raise Face - BLRF, Spectacle Blind, Ring Joint, Large Dia Flanges, Orifice Flanges, Girth Flange, Lap Joint Flanges, Screwed (Threaded) Flanges, Long Weld Neck Flanges, Reducing.
Size:½" (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.
Material:Grade
150 Lbs
Drilling
Nominal BoreDia.
(D)		Thick.
(E)		Dia.
(B)		Dia.
(A)		Height
(H)		NbrHolesDia.
(C)
1/2"
90
11.2
30
22.9
16
4
15.87
60.3
3/4"
100
12.7
38
28.2
16
4
15.87
69.9
1"
110
14.3
49
34.9
17
4
15.87
79.4
1 1/4"
115
15.9
59
43.7
21
4
15.87
88.9
1 1/2"
125
17.5
65
50.0
22
4
15.87
98.4
2"
150
20.7
78
62.5
25
4
19.05
120.7
2 1/2"
180
22.3
90
75.4
29
4
19.05
139.7
3"
190
23.9
108
91.4
30
4
19.05
152.4
3 1/2"
215
23.9
122
104.1
32
8
19.05
177.8
4"
230
23.9
135
116.8
33
8
19.05
190.5
5"
255
23.9
164
144.4
36
8
22.22
215.9
6"
280
25.4
192
171.4
40
8
22.22
241.3
8"
345
28.6
246
222.2
44
8
22.22
298.5
10"
405
30.2
305
277.4
49
12
25.40
362.0
12"
485
31.8
365
328.2
56
12
25.40
431.8
14"
535
35.0
400
360.2
79
12
28.57
476.3
16"
595
36.6
457
411.2
87
16
28.57
539.8
18"
635
39.7
505
462.3
97
16
31.75
577.9
20"
700
42.9
559
514.4
103
20
31.75
635.0
24"
815
47.7
663
616.0
111
20
34.92
749.3
The dimensions are in millimeters
300 Lbs
Drilling
Nominal BoreDia.
(D)		Thick.
(E)		Dia.
(B)		Dia.
(A)		Height
(H)		NbrHolesDia.
(C)
1/2"
95
14.3
38
22.9
22
4
15.87
66.7
3/4"
115
15.9
48
28.2
25
4
19.05
82.6
1"
125
17.5
54
34.9
27
4
19.05
88.9
1 1/4"
135
19.1
64
43.7
27
4
19.05
98.4
1 1/2"
155
20.7
70
50.0
30
4
22.22
114.3
2"
165
22.3
84
62.5
33
8
19.05
127.0
2 1/2"
190
25.4
100
75.4
38
8
22.22
149.2
3"
210
28.6
117
91.4
43
8
22.22
168.3
3 1/2"
230
30.2
133
104.1
44
8
22.22
184.2
4"
255
31.8
146
116.8
48
8
22.22
200.0
5"
280
35.0
178
144.4
51
8
22.22
235.0
6"
320
36.6
206
171.4
52
12
22.22
269.9
8"
380
41.3
260
222.2
62
12
25.40
330.2
10"
445
47.7
321
277.4
95
16
28.57
387.4
12"
520
50.8
375
328.2
102
16
31.75
450.8
14"
585
54.0
425
360.2
111
20
31.75
514.4
16"
650
57.2
483
411.2
121
20
34.29
571.5
18"
710
60.4
533
462.3
130
24
34.29
628.6
20"
775
63.5
587
514.4
140
24
34.29
685.8
24"
915
69.9
702
616.0
152
24
41.27
812.8
The dimensions are in millimeters
600 Lbs
Drilling
Nominal BoreDia.
(D)		Thick.
(E)		Dia.
(B)		Dia.
(A)		Height
(H)		NbrHolesDia.
(C)
1/2"
95
14.3
38
23.6
22
4
15.87
66.7
3/4"
115
15.9
48
29.0
25
4
19.05
82.6
1"
125
17.5
54
35.8
27
4
19.05
88.9
1 1/4"
135
20.7
64
44.4
29
4
19.05
98.4
1 1/2"
155
22.3
70
50.6
32
4
22.22
114.3
2"
165
25.4
84
63.5
37
8
19.05
127.0
2 1/2"
190
28.6
100
76.2
41
8
22.22
149.2
3"
210
31.8
117
92.2
46
8
22.22
168.3
3 1/2"
230
35.0
133
104.9
49
8
25.40
184.2
4"
275
38.1
152
117.6
54
8
25.40
215.9
5"
330
44.5
189
144.4
60
8
28.57
266.7
6"
355
47.7
222
171.4
67
12
28.57
292.1
8"
420
55.6
273
222.2
76
12
31.75
349.2
10"
510
63.5
343
276.2
111
16
34.92
431.8
12"
560
66.7
400
328.6
117
20
34.92
489.0
14"
605
69.9
432
360.4
127
20
38.10
527.0
16"
685
76.2
495
411.2
140
20
41.27
603.2
18"
745
82.6
546
462.0
152
20
44.45
6654.0
20"
815
88.9
610
512.8
165
24
44.45
723.9
24"
940
101.6
718
614.4
184
24
50.80
838.2
The dimensions are in millimeters

www.anitasteel.com
sales@anitasteel.com
Hitesh Mehta
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