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Stainless Steel Lap Joint Flange

Top Rated Manufacturer of ASTM A182 F304 Loose Flange In India


Stainless Steel Lap Joint Flange


Lap joint Flanges ANSI B16.5 is manufactured by using high quality raw material and the packaging is done carefully. This is durable, sturdy and as excellent corrosion resistance. These are used over the pipe and mostly used for stub end fittings. Lap joint flange flat face is the connection where the gasket sits. These are similar to other types of industrial flanges. The price of this is affordable and is thus available in stock

Lap joint Flanges manufacturers companies are found in numbers but the one which is trust-worthy and delivers quality product is regal sales corporation. We are the topmost steel companies in India and our skilled and highly professional team is good enough to manage the manufacturing process. Stainless Steel Lap Joint Flange Supplier in India the pressure, temperature ratings, dimensions, tolerances and many more.

Lap joint flange EN 1092 1 is the product which has specifications like coating, test certificates, production technique and many more. This also includes weight chart and other sections like rated diameter, flange, screws and weight. Lap joint Flanges raised face is referred to as gasket surfaces. The price of this is low in Mumbai and it is to be joint with a joint stub end.


Table of Content


fasteners types


What Stainless Steel Lap Joint Flanges means ?


ASME B16.5 Lap Joint Flanges are mostly used with stub end fittings. This is usually welded and is free to rotate around the stub end. This consists of various dimensions and it includes factors like nominal size, outside diameter, thickness and many more. These are manufactured by using carbon steel, stainless steel grades and alloy steel. These are used in industrial sectors and also in many other industries. The pressure holding capacity of this is lower than that of welding neck flanges.

Stainless Steel Lap Joint Flanges Manufacturer in India are designed for easy assembly and disassembly, commonly used in piping systems where frequent maintenance is required. They are ideal for systems with limited space. These flanges are delivered to countries like Qatar, Germany, Egypt, Malaysia, Netherlands, Vietnam, and Kuwait.


Supplier of ASME / ANSI B16.5 Lap Joint Flange in Mumbai As Per EN 1092-1, Check Specification


Specification of Ss Lap Joint Flange


Size

ASME / ANSI B16.5 Loose Flange Size Range :

  • NPS: ½" 48 "
  • 15NB – 1200NB
  • DN10 ~ DN5000
Features

Features

  • Lap Joint Design
  • No Bolt Holes in the Flange
  • Flexible Alignment
  • Maintenance-Friendly
Advantages

Advantages

  • Flexibility in Alignment
  • Cost-Effective
  • Space-Saving
  • No Gasket Damage

Wall Thickness

Wall Thickness

  • SCH 120/ 140
  • SCH 160/ 180
  • SCH 60/ 80/ 100
  • SCH 10/ 20/ 40
Standard

International Standard

  • ASME B16.5
  • ASME B16.36
  • ASME B16.47
  • ASME B16.48
Disadvantages

Disadvantages

  • Limited Strength
  • No Flange Weldability
  • Size and Weight
  • Gasket Wear and Tear

Class

Pressure Class

  • 300 To 400#
  • 125 To 150#
  • 600 To 900#
  • 1500 To 2500#
Method

Manufacturing Methods

  • Material Selection
  • Forming the Flange Body
  • Cutting and Machining
  • Heat Treatment
  • Packaging and Shipping
coating

Threads Types

  • BSP
  • NPT
  • BSPP (Male & female)
  • MNPT (Male)
  • MPT/ BSPT (Female)

Applications

Installations

  • Inserting the Gasket
  • Tightening the Bolts
  • Check for Proper Sealing
  • Final Checks and Operation
Testing Methods

Testing Requirements

  • Hydrostatic Testing
  • Pneumatic Testing
  • Pressure Testing
  • Surface Finish Inspection
Packaging

Available Packagings

  • Standard Wooden Crates
  • Steel Frames
  • Plastic Shrink Wrap
  • Palletized Packaging
  • Custom Foam Inserts


Most Common types of SS Raised Face Lap Joint Flange


Stainless Steel Lap Joint Flange Supplier in India provides a wide range of the most common types

Supplies in a Range of Countries, Including UAE, Kenya, Italy, Oman, Spain, Belgium, Germany, Netherlands, Qatar etc.


Stainless Steel Lap Joint Flange

Stainless Steel Lap Joint Flange

Ss Loose Flange

Ss Loose Flange

Stainless Raised Face Lap Joint Flange

Stainless Raised Face Lap Joint Flange

Inox Steel Flat Face Lap Joint Flange

Inox Steel Flat Face Lap Joint Flange

Stainless Steel Lapped Flange

Stainless Steel Lapped Flange

Nirosta Joint Flange

Nirosta Joint Flange

Chrome Steel Flange Stub End

Chrome Steel Flange Stub End

Chrome Nickel Steel Lap Flange Joint

Chrome Nickel Steel Lap Flange Joint

Austenitic Steel Lap Joint Flange Stub End

Austenitic Steel Lap Joint Flange Stub End

Martensitic Steel Lap Joint Flange With Stub End

Martensitic Steel Lap Joint Flange With Stub End

Ferritic Stainless Steel Lap Joint Stub

Ferritic Stainless Steel Lap Joint Stub

Nirosta Stub End and Lap Joint Flange

Nirosta Stub End and Lap Joint Flange

Stainless Steel Lj Flange

Stainless Steel Lj Flange

Ss Lf Flange

Ss Lf Flange

Stainless Vanstone Flanges

Stainless Vanstone Flanges

Stainless Steel Backing Flanges

Stainless Steel Backing Flanges

Stainless Steel Slide on Flanges

Stainless Steel Slide on Flanges

Ss Collar Flanges

Ss Collar Flanges

Stainless Jointing Flanges

Stainless Jointing Flanges

Stainless Steel Lap Flanges

Stainless Steel Lap Flanges


View Carbon Steel Vanstone Flange & PN10 Lap Joint Flange Dimensions Chart in Class 150, 300, 600


Size Chart For Martensitic Steel Long Weld Neck Flange


DN (Inches) Dimension Lap Joint Flange Sizes
900 LBS 600 LBS 400 LBS 300 LBS 125 LBS 150 LBS 1500 LBS
millimeter inches millimeter inches millimeter inches millimeter inches millimeter inches millimeter inches
1 D1 79.4 3 1/8 88.9 3 1/2 88.9 3 1/2 88.9 3 1/2 102 4 102 4
b 28.6 1 1/8 17.5 11/16 17.5 11/16 17.5 11/16 14.3 9/16 28.6 1 1/8
A 149.2 5 7/8 123.8 4 7/8 123.8 4 7/8 123.8 4 7/8 108 4 1/4 149.2 5 7/8
n 4 4 4 4 4 4 4 4 4 4 4 4
d 25.4 1 19 3/4 19 3/4 19 3/4 15.9 5/8 25.4 1
3/4 D1 69.8 2 3/4 82.5 3 1/4 82.5 3 1/4 82.5 3 1/4 88.9 3 1/2 88.9 3 1/2
b 25.4 1 15.9 5/8 15.9 5/8 15.9 5/8 12.7 1/2 25.4 1
A 130 5 1/8 117.5 4 5/8 117.5 4 5/8 117.5 4 5/8 98.4 3 7/8 130 5 1/8
n 4 4 4 4 4 4 4 4 4 4 - 4
d 22.2 7/8 19 3/4 19 3/4 19 3/4 15.9 5/8 22.2 7/8
1 1/4 D1 88.9 3 1/2 98.4 3 7/8 98.4 3 7/8 98.4 3 7/8 111 4 3/8 111 4 3/8
b 28.6 1 1/8 20.6 13/16 20.6 13/16 19 3/4 15.9 5/8 28.6 1 1/8
A 159 6 1/4 133.4 5 1/4 133.4 5 1/4 133.4 5 1/4 117.5 4 5/8 159 6 1/4
n 4 4 4 4 4 4 4 4 4 4 4 4
d 25.4 1 19 3/4 19 3/4 19 3/4 15.9 5/8 25.4 1
2 D1 121 4 3/4 127 5 127 5 127 5 165.1 6 1/2 165.1 6 1/2
b 38.1 1 1/2 25.4 1 25.4 1 22.2 7/8 19 3/4 38.1 1 1/2
A 215.9 8 1/2 165.1 6 1/2 165.1 6 1/2 165.1 6 1/2 152.4 6 215.9 8 1/2
n 8 8 8 8 8 8 8 8 4 4 8 8
d 25.4 1 19 3/4 19 3/4 19 3/4 19 3/4 25.4 1
1/2 D1 60.3 2 3/8 66.7 2 5/8 66.7 2 5/8 66.7 2 5/8 82.6 3 1/4 82.6 3 1/4
b 22.2 7/8 14.3 9/16 14.3 9/16 14.3 9/16 11.1 7/16 22.2 7/8
A 121 4 3/4 95.2 3 3/4 95.2 3 3/4 95.2 3 3/4 88.9 3 1/2 121 4 3/4
n 4 4 4 4 4 4 4 4 4 4 - 4
d 22.2 7/8 15.9 5/8 15.9 5/8 15.9 5/8 15.9 5/8 22.2 7/8
1 1/2 D1 4 3 7/8 114 4 1/2 114 4 1/2 114 4 1/2 124 4 7/8 124 4 7/8
b 31.8 1 1/4 22.2 7/8 22.2 7/8 20.6 13/16 17.5 11/16 31.8 1 1/4
A 177.8 7 155.6 6 1/8 155.6 6 1/8 155.6 6 1/8 127 5 177.8 7
n 4 4 4 4 4 4 4 4 4 4 4 4
d 28.6 1 1/8 22.2 7/8 22.2 7/8 22.2 7/8 . 15.9 5/8 28.6 1 1/8
2 1/2 D1 139.7 5 1/2 149.2 5 7/8 149.2 5 7/8 149.2 5 7/8 190.5 7 1/2 190.5 7 1/2
b 41.3 1 5/8 28.6 1 1/8 28.6 1 1/8 25.4 1 22.2 7/8 41.3 1 5/8
A 244 9 5/8 190.5 7 1/2 190.5 7 1/2 190.5 7 1/2 177.8 7 244 9 5/8
n 8 8 8 8 8 8 8 8 4 4 8 8
d 28.6 1 1/8 22.2 7/8 22.2 7/8 22.2 7/8 19 3/4 28.6 1 1/8

ASME B16.5 Lap Joint Flanges Pressure Ratings


Pressure Rating Table of Flange(Psi)
Temp (F°) 2500# 300# 150# 600# 400# 1500# 900#
-20 - 100 6170 740 285 1480 985 3705 2220
950 1145 135 35 275 185 685 410
500 5025 605 170 1205 805 3015 1810
200 5655 680 260 1360 905 3395 2035
400 5280 635 200 1265 845 3170 1900
650 4575 550 125 1100 730 2745 1650
300 5450 655 230 1310 870 3270 1965
700 4425 530 110 1060 710 2655 1590
900 1915 230 50 460 305 1150 690
750 4230 505 95 1015 675 2535 1520
800 3430 410 80 825 550 2055 1235
600 4730 570 140 1135 755 2840 1705
850 2655 320 65 640 425 1595 955
1000 715 85 20 170 115 430 255

Stainless Steel Lap Joint Flange Class 150 Dimensions Standard


Stainless Steel Lap Joint Flange Dimensions Standard

Size mm Size Inch Stud Size Size Hole Outer Diameter Flange Thickness Lapped Thickness Flange Thickness Lapped Thickness Lapped ID PCD Lapped Radius Size Bolt No of Bolts Machine Bolt Length RF Stud Length Weight (kg)
A B C B G D E
25 1 M14 5/8 110 49 17 49 14.3 34.9 79.4 3 1/2 4 55 65 0.9
500 20 M30 1 1/4 700 559 103 559 42.9 514.4 635 13 1 1/8 20 140 160 75
65 2 1/2 M16 3/4 180 90 29 90 22.3 75.4 139.7 8 5/8 4 75 90 3.2
400 16 M27 1 1/8 595 457 87 457 36.6 411.2 539.8 13 1 16 115 135 54
15 1/2 M14 5/8 90 30 16 30 11.2 22.9 60.3 3 1/2 4 50 55 0.8
80 3 M16 3/4 190 108 30 108 23.9 91.4 152.4 10 5/8 4 75 90 3.7
600 24 M33 1 3/8 815 663 111 663 47.9 616 749.3 13 1 1/4 20 150 170 100
32 1 1/4 M14 5/8 115 59 21 59 15.9 43.7 88.9 5 1/2 4 55 70 1.4
450 18 M30 1 1/4 635 505 97 505 39.7 462.3 577.9 13 1 1/8 16 125 145 59
40 1 1/2 M14 5/8 125 65 22 65 17.5 50 98.4 6 1/2 4 65 70 1.4
20 3/4 M14 5/8 100 38 16 38 12.7 28.2 69.9 3 1/2 4 50 65 0.9
100 4 M16 3/4 230 135 33 135 23.9 116.8 190.5 11 5/8 8 75 90 5.9
50 2 M16 3/4 150 78 25 78 19.1 62.5 120.7 8 5/8 4 70 85 2.3
90 3 1/2 M16 3/4 215 122 32 122 23.9 104.1 177.8 11 5/8 8 75 90 5
200 8 M20 7/8 345 246 44 246 28.6 222.2 298.5 13 3/4 8 90 110 13.7
250 10 M24 1 405 305 49 305 30.2 277.4 362 13 7/8 12 100 115 19.5
125 5 M20 7/8 255 164 36 164 23.9 144.4 215.9 11 3/4 8 85 95 6.8
300 12 M24 1 485 365 56 365 31.8 328.2 431.8 13 7/8 12 100 120 29
150 6 M20 7/8 280 192 40 192 25.4 171.4 241.3 13 3/4 8 85 100 8.6
350 14 M27 1 1/8 535 400 79 400 35 360.2 476.3 13 1 12 115 135 41

INOX Steel Lap Joint Flange Class 300 Dimensions Standard


Nominal Bore Diameter (D) Thickness (E) Diameter (B) Diameter (A) Height (H) Nbr Holes Size Diameter (C)
1 1/4" 135 19.1 64 43.7 27 4 19.05 98.4
3/4" 115 15.9 48 28.2 25 4 19.05 82.6
8" 380 41.3 260 222.2 62 12 25.40 330.2
1/2" 95 14.3 38 22.9 22 4 15.87 66.7
16" 650 57.2 483 411.2 121 20 34.29 571.5
10" 445 47.7 321 277.4 95 16 28.57 387.4
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
1" 125 17.5 54 34.9 27 4 19.05 88.9
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
18" 710 60.4 533 462.3 130 24 34.29 628.6
1 1/2" 155 20.7 70 50.0 30 4 22.22 114.3
6" 320 36.6 206 171.4 52 12 22.22 269.9
20" 775 63.5 587 514.4 140 24 34.29 685.8
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
24" 915 69.9 702 616.0 152 24 41.27 812.8

Martensitic Steel Lap Joint Flange Class 600 Dimensions Standard


Nominal Bore Diameter (D) NBR Diameter (B) Thickness (E) Diameter (A) Diameter (C) Height (H) Holes Size
18" 745 20 546 82.6 462.0 6654.0 152 44.45
1" 125 4 54 17.5 35.8 88.9 27 19.05
1 1/4" 135 4 64 20.7 44.4 98.4 29 19.05
20" 815 24 610 88.9 512.8 723.9 165 44.45
1 1/2" 155 4 70 22.3 50.6 114.3 32 22.22
2" 165 8 84 25.4 63.5 127.0 37 19.05
1/2" 95 4 38 14.3 23.6 66.7 22 15.87
8" 420 12 273 55.6 222.2 349.2 76 31.75
16" 685 20 495 76.2 411.2 603.2 140 41.27
2 1/2" 190 8 100 28.6 76.2 149.2 41 22.22
3" 210 8 117 31.8 92.2 168.3 46 22.22
3 1/2" 230 8 133 35.0 104.9 184.2 49 25.40
3/4" 115 4 48 15.9 29.0 82.6 25 19.05
4" 275 8 152 38.1 117.6 215.9 54 25.40
5" 330 8 189 44.5 144.4 266.7 60 28.57
14" 605 20 432 69.9 360.4 527.0 127 38.10
6" 355 12 222 47.7 171.4 292.1 67 28.57
10" 510 16 343 63.5 276.2 431.8 111 34.92
12" 560 20 400 66.7 328.6 489.0 117 34.92
24" 940 24 718 101.6 614.4 838.2 184 50.80

Stainless Lap Joint Flange Class 900 Dimensions Standard


Size mm Size Inch Stud Size Outer Dia. Hole Size Flange Thickness Lapped ID Lapped Thickness PCD Lapped Radius Lapped Thickness Number of Bolts Bolt Size UNC RF Stud Length Weight kg
A B D C E G
25 1 M24 150 1 52 34.9 41 101.6 3 28.6 4 7/8 125 3.6
32 1 1/4 M24 160 1 64 43.7 41 111.1 5 28.6 4 7/8 125 4.1
300 12 M36 610 1 1/2 419 328.2 143 533.4 13 79.4 20 1 3/8 255 148
40 1 1/2 M27 180 1 1/8 70 50 44 123.8 6 31.8 4 1 140 5.5
400 16 M42 705 1 3/4 508 411.2 165 616 13 88.9 20 1 5/8 285 193
450 18 M48 785 2 565 462.3 190 685.8 13 101.6 20 1 7/8 325 258
125 5 M33 350 1 3/8 190 144.4 79 279.4 11 50.8 8 1 1/4 190 38
15 1/2 M20 120 7/8 38 22.9 32 82.6 3 22.3 4 3/4 110 1.8
20 3/4 M20 130 7/8 44 28.2 35 88.9 3 25.4 4 3/4 115 2.3
50 2 M24 215 1 105 62.5 57 165.1 8 38.1 8 7/8 145 11.5
100 4 M30 290 1 1/4 159 116.8 70 235 11 44.5 8 1 1/8 170 24
150 6 M30 380 1 1/4 235 171.4 86 317.5 13 55.6 12 1 1/8 190 50
65 2 1/2 M27 245 1 1/8 124 75.4 64 190.5 8 41.3 8 1 160 16.5
80 3 M24 240 1 127 91.4 54 190.5 10 38.1 8 7/8 145 12
600 24 M64 1040 2 5/8 749 616 267 901.7 13 139.7 20 2 1/2 440 608
200 8 M36 470 1 1/2 298 222.2 114 393.7 13 63.5 12 1 3/8 220 78
350 14 M39 640 1 5/8 451 360.2 156 558.8 13 85.8 20 1 1/2 275 182
250 10 M36 545 1 1/2 368 277.4 127 469.9 13 69.9 16 1 3/8 235 112
500 20 M52 855 2 1/8 622 514.4 210 749.3 13 108 20 2 350 317

Ferritic Stainless Lap Joint Flange Class 1500 Dimensions Standard


Size mm Size Inch Stud Size Hole Size No of Bolts Flange Thickness. Outer Dia. Lapped ID Lapped Thickness. Lapped ID PCD Lapped Thickness. RF Stud Length Lapped Radius Bolt Size UNC Weight in kg
B A D C D E G
600 24 M90 3 5/8 16 762 1170 616 330 616 990.6 203.2 615 13 3 1/2 1248
25 1 M24 1 4 52 150 34.9 41 34.9 101.6 28.6 125 3 7/8 3.7
125 5 M39 1 5/8 8 197 375 144.4 105 144.4 292.1 73.1 250 11 1 1/2 59
40 1 1/2 M27 1 1/8 4 70 180 50 44 50 123.8 31.8 140 6 1 5.5
350 14 M56 2 3/8 16 495 750 360.2 241 360.2 635 133.4 405 13 2 1/4 341
15 1/2 M20 7/8 4 38 120 22.9 32 22.9 82.6 22.3 110 3 3/4 1.8
450 18 M72 2 7/8 16 597 915 462.3 276 462.3 774.7 162 495 13 2 3/4 590
20 3/4 M20 7/8 4 44 130 28.2 35 28.2 88.9 25.4 115 3 3/4 2.3
50 2 M24 1 8 105 215 62.5 57 62.5 165.1 38.1 145 8 7/8 9.8
100 4 M33 1 3/8 8 162 310 116.8 90 116.8 241.3 54 195 11 1 1/4 33
65 2 1/2 M27 1 1/8 8 124 245 75.4 64 75.4 190.5 41.3 160 8 1 16.4
150 6 M36 1 1/2 12 229 395 171.4 119 171.4 317.5 82.6 260 13 1 3/8 75
80 3 M30 1 1/4 8 133 265 91.4 73 91.4 203.2 47.7 180 10 1 1/8 21.8
200 8 M42 1 3/4 12 292 485 222.2 143 222.2 393.7 92.1 290 13 1 5/8 118
32 1 1/4 M24 1 4 64 160 43.7 41 43.7 111.1 28.6 125 5 7/8 4.1
400 16 M64 2 5/8 16 552 825 411.2 260 411.2 704.8 146.1 445 13 2 1/2 454
250 10 M48 2 12 368 585 277.4 178 277.4 482.6 108 335 13 1 7/8 198
500 20 M76 3 1/8 16 641 985 514.4 292 514.4 831.8 177.8 540 13 3 792
300 12 M52 2 1/8 16 451 675 328.2 219 328.2 571.5 123.9 375 13 2 264

Refer Pressure Ratings of Raised Face Lap Joint Flange & Weight Chat of LJFF Flange

Weight Chart For Inox Steel Lap Joint Flange


Pipe Sizes Lap Joint Flange
14 105
5 15
1 2
20 195
2 5
2½ 8
3 9
3½ 11
4 13
18 160
6 19
10 43
1¼ 3
8 30
1½ 3
16 140
12 64
½ 1
24 275
¾ 2
22 245

Thickness Chart For Stainless Steel Long Weld Neck Flange


Stainless Steel Weld Neck Flanges Manufacturer in India offers a excellent thickness chart for flanges


Thickness Of Lap Joint Flange
Normal Pipe Sizes Outside Dia Schedule 140 EXT Hvy Schedule 30 Schedule 120 STD Wall Schedule 40 Schedule 60 Schedule 20 Schedule 100 Schedule 80 Schedule 160 Schedule 10 XX Hvy
1 1.315 ... 0.179 ... ... 0.133 0.133 ... ... ... 0.179 0.25 0.109 0.358
3 ½ 4 ... 0.318 ... ... 0.226 0.226 ... ... ... 0.318 ... 0.12 0.636
1 ¼ 1.66 ... 0.191 ... ... 0.14 0.14 ... ... ... 0.191 0.25 0.109 0.382
4 4.5 ... 0.337 ... 0.438 0.237 0.237 ... ... ... 0.337 0.531 0.12 0.674
12 12.75 1.125 0.5 0.33 1 0.375 0.406 0.562 0.25 0.844 0.688 1.312 0.18 1
5 5.563 ... 0.375 ... 0.5 0.258 0.258 ... ... ... 0.375 0.625 0.134 0.75
14 14 1.25 0.5 0.375 1.094 0.375 0.438 0.594 0.312 0.938 0.75 1.406 0.25 ...
1 ½ 1.9 ... 0.2 ... ... 0.145 0.145 ... ... ... 0.2 0.281 0.109 0.4
2 2.375 ... 0.218 ... ... 0.154 0.154 ... ... ... 0.218 0.344 0.109 0.436
20 20 1.75 0.5 0.5 1.5 0.375 0.594 0.812 0.375 1.281 1.031 1.969 0.25 ...
3 3.5 ... 0.3 ... ... 0.216 0.216 ... ... ... 0.3 0.438 0.12 0.6
6 6.625 ... 0.432 ... 0.562 0.28 0.28 ... ... ... 0.432 0.719 0.134 0.864
8 8.625 0.812 0.5 0.277 0.719 0.322 0.322 0.406 0.25 0.594 0.5 0.906 0.148 0.875
10 10.75 1 0.5 0.307 0.844 0.365 0.365 0.5 0.25 0.719 0.594 1.125 0.165 1
22 22 .... 0.5 ... .... 0.375 ... ... ... ... ... .... 0.25 ....
30 30 .... 0.5 0.625 .... 0.375 .... .... 0.5 .... .... .... 0.312 ....
16 16 1.438 0.5 0.375 1.219 0.375 0.5 0.656 0.312 1.031 0.844 1.594 0.25 ...
24 24 2.062 0.5 0.562 1.812 0.375 0.688 0.969 0.375 1.531 1.219 2.344 0.25 ....
18 18 1.562 0.5 0.438 1.375 0.375 0.562 0.75 0.312 1.156 0.938 1.781 0.25 ...
26 26 .... 0.5 .... .... 0.375 .... .... .... .... .... .... .... ....
½ 0.84 ... 0.147 ... ... 0.109 0.109 ... ... ... 0.147 0.188 0.083 0.294
¾ 1.05 ... 0.154 ... ... 0.113 0.113 ... ... ... 0.154 0.219 0.083 0.308
42 42 …….. 0.5 …….. …….. 0.375 …….. …….. …….. …….. …….. …….. …….. ……..
36 36 .... 0.5 0.625 .... 0.375 0.75 .... 0.5 .... .... .... 0.312 ....
40 40 .... 0.5 .... .... 0.375 .... .... .... .... .... .... .... ....
2 ½ 2.875 ... 0.276 ... ... 0.203 0.203 ... ... ... 0.276 0.375 0.12 0.552
48 48 …….. 0.5 …….. …….. 0.375 …….. …….. …….. …….. …….. …….. …….. ……..

Stockist of SS Class 150 Lap Joint Flange & Stainless Stee Vanstone Flange , Check Chemical Composition and Mechanical Properties

Stainless Steel Heavy Barrel Lap Joint Flange Chemical Composition


Stainless Steel Lap Joint Flange Manufacturer in India ensures precise chemical structure for flanges


Element AISI 304 AISI 316
Manganese (Mn) ≤ 2.0% ≤ 2.0%
Silicon (Si) ≤ 1.0% ≤ 1.0%
Nickel (Ni) 8.0% – 10.5% 10.0% – 14.0%
Molybdenum (Mo) - 2.0% – 3.0%
Nitrogen (N) ≤ 0.10% ≤ 0.10%
Iron (Fe) Balance (≈ 70%) Balance (≈ 70%)
Carbon (C) ≤ 0.08% ≤ 0.08%
Chromium (Cr) 18.0% – 20.0% 16.0% – 18.0%
Copper (Cu) - -
Phosphorus (P) ≤ 0.045% ≤ 0.045%
Sulfur (S) ≤ 0.030% ≤ 0.030%

Physical Properties of Stainless Lapped Flange


Property AISI 304 AISI 316
Hardness (Rockwell) 85 – 95 HRB 90 – 98 HRB
Thermal Conductivity (W/m·K) 16.2 16.3
Melting Point (°C) 1400°C – 1450°C 1375°C – 1400°C
Density (g/cm³) 7.90 7.98
Electrical Resistivity (µΩ·cm) 0.72 0.74
Poisson’s Ratio 0.30 0.30

Chrome Nickel Steel Joint Flange Mechanical Properties


Property AISI 304 AISI 316
Modulus of Elasticity (GPa) 193 193
Yield Strength (MPa) 215 290
Elongation at Break (%) 40% 40%
Creep Strength Moderate High

Equivalent material Grade of Martensitic Steel Lap Joint Stub


AISI Grade EN UNS BS DIN JIS
304 X5CrNi18-10 S30400 304S31 1.4301 SUS 304
316 X5CrNiMo17-12-2 S31600 316S31 1.4401 SUS 316

How Are Lap Joint Flanges Used in Pipe Welding?


Aspect Details
Construction Lap joint flange + backing flange
Welding Backing flange welded to pipe
Advantages Easy assembly/disassembly, corrosion resistance
Applications Large pipes, different materials, flanged connections

When Should SS Lap Joint Flanges Be Used Instead of Other Types? ?


  • ➤ Frequent disassembly: Easy to assemble and disassemble.
  • ➤ Misalignment tolerance: Allows slight adjustments during installation.
  • ➤ Corrosion resistance: Ideal for harsh environments.
  • ➤ Inspection/maintenance: Suitable for pipes needing regular inspection.
  • ➤ Large pipes: Perfect for large diameter pipes.
  • ➤ Material flexibility: Works with different pipe materials.

Can a Lap Welding Joint Be Used on Both Sides?


Yes, a lap welding joint can be used on both sides, but it's less common compared to using it on just one side. In a typical lap weld, two pieces of material overlap, and the joint is welded on one side to hold them together.


What is the Difference Between a Lap Joint Flange and a Slip-on Flange?


Feature Lap Joint Flange Slip-on Flange
Design Fits over a stub end Slides over the pipe
Usage Used with stub end Permanent connection
Assembly Needs stub end for connection Slides on and welded
Cost More expensive Less expensive
Disassembly Easy to disassemble Hard to disassemble

Materials