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    ASME B16.5 Stub End Flange and Stainless Steel Loose Flange manufacturer in India

    A flange acts as a device which connects and strengthens the existing piping system. A Lap Joint Flange consists of a 2 step assembly. The lap joint ring and a stub end which are attached to it to complete the flange. These flanges are highly resistant to corrosion and oxidation in different environments. In the Stub End Flange, the fittings can act as a replacement for welded flanges. These flanges provide support to the overall system and fullfill the requirements of backup rotating flanges. The Stainless Steel Lap Joint Flange can easily suffice in stress-induced environments where oxidants and reducers are at their peak. These joints possess superior strength and can be used in several high-pressure applications. All the Lap Joint Pipe Flanges can be slid on the pipe and attached similar to a slip-on flange. After welding, the stub end, the flange can be easily moved in different directions. The Stub End Lap Joint is a preferred choice in piping systems that require to be frequently dismantled and inspected. Its quick butt hole alignment allows it to be used in difficult piping configurations and large diameter pipes. The Lap Joint Flange Stub End possesses good mechanical properties in all conditions. Apart from this, they have good thermal stability and are very easy to work with. 

    The Carbon Steel Lap Joint Flange is made with high carbon concentrations. As a result, they possess good strength and high ductility. They can be easily rotated which, enables them to be fitted easily in butt-holes. The Lap Joint Flange Types go by different names namely back up flanges, loose ring flanges, loose hubbed flanges, and van stone flanges, and so on. For the Loose Flange Joint, a weld is applied on the end of the pipe. This enables these flanges to possess a half or full flanged coupling. These flanges allow different types of pipe fittings to be fitted on them with ease. The Stub End With Backing Flange is suitable for pressures classes from class 150 to class 2500. These flanges are available in standard sizes between 15NB to 1200NB. Our experienced workers produced all our products including, the Flange With Stub End following, all international and national standards. They make use of the latest technology and best raw materials while producing the best products in the market.

    A Lap Joint Flange Connection doesn’t come in contact with, the fluids enabling them to suffice for long periods. Furthermore, they can be recycled if they get damaged or worn after long years of service. The Stub End With Flange possesses good workability and can be machined easily. These flanges consist of two parts which enable cost-cutting in cases when one part is damaged. A Steel Lap Joint can be welded via a fillet weld. These flanges are fastened together to create a strong flush surface. They can be galvanized or annealed for better protection. All our Lap Flange Joint can be custom designed in different shapes, sizes, and chemical make-up as per the requirements of our clients. If you have any questions or want to know more about our products or the LJ Flange, contact us for more information.

    Manufacturer of Carbon Steel Lap Joint Flange and ASTM A105 Loose Flange Joint in RTJ Type, Flat/ Raised Face

    Lap Joint Flange Specification

    Check ANSI / ASME B16.5 Alloy Steel A182 F11 Flange With Stub End and ASTM A350 LF2 Lap Flange Joint pressure rating chart and dimensions

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

    Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

    Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

    Carbon Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8

    Stainless Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

    Alloy Steel Loose Flanges/ Loose flange for stub end Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

    Special Alloy Loose Flanges/ Loose flange for stub end Flanges: Duplex, Super Duplex, Nickel Alloys

    Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

    Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

    Value Added Services: CNC Machining, Customised Flanges

     GB9112-9131,SH3406,ANSI B16.5 ,DIN25762766,DIN2632-2638

     from 150lbs to 2,500lbs.

     DN10-DN800.

     Carbon steel, stainless steel and alloy steel.

     Carbon steel and alloy steel with yellow print, black print, oil or zinc.

     Forged.

    Lap Joint Flanges

    Lap Joint Pipe Flanges Key Features

    Manufacturer and exporter of UNS S31803 Duplex Stub End with Backing Flange and Titanium LJ Flange in Class 150 Lb, 300 Lb, 400 Lb, 600 Lb, 900 Lb, 1500 Lb and 2500 Lb accordance to ANSI/ ASME B16.5

    * Proven million of times as a standard flange
    * Low – weight
    * Optimised “one-man fitting”
    * Reduced installation costs
    * No loose parts 
    * Homogenous introduction of flange forces
    * Minimised leakage rates
    * High residual torques after thermal stress

    Stainless Steel Lap Joint Flange Dimension Standards

    Manufacturer of SS 304 Loose Flange and 316 Stainless Steel Lap Joint Flange as per JIS/ DIN/ BS /EN standards in Mumbai, buy Nickel Alloy Stub End Flange and Super Duplex LJ Flange at low price in India

    ANSI B16.5
    Class 150lbs, Class 300lbs
    Class 600lbs, Class 1500lb

    lap joint flange dimensions

    Class 150 Lap Joint Flange Dimensions

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


    Flnage and Olet Quiz – Test yourself, Take This Quiz

    Class 300 Lap Joint Flange Dimensions

    Size in Inch Size in mm Outer Diameter Flange Thick. Lapped Thick. Lapped ID PCD Lapped Thick. Lapped Radius No of Bolts Bolt Size UNC Machine Bolt Length RF Stud Length Hole Size ISO Stud Size Weight in kg
    A B C D E G
    1/2 15 95 38 22 22.9 66.7 14.3 3 4 1/2 55 65 5/8 M14 1.2
    3/4 20 115 48 25 28.2 82.6 15.9 3 4 5/8 65 75 3/4 M16 1.4
    1 25 125 54 27 34.9 88.9 17.5 3 4 5/8 65 75 3/4 M16 1.4
    1 1/4 32 135 64 27 43.7 98.4 19.1 5 4 5/8 70 85 3/4 M16 1.8
    1 1/2 40 155 70 30 50 114.3 20.7 6 4 3/4 75 90 7/8 M20 2.7
    2 50 165 84 33 62.5 127 22.3 8 8 5/8 75 90 3/4 M16 3.2
    2 1/2 65 190 100 38 75.4 149.2 25.4 8 8 3/4 85 100 7/8 M20 4.6
    3 80 210 117 43 91.4 168.3 28.6 10 8 3/4 90 110 7/8 M20 5.9
    3 1/2 90 230 133 44 104.1 184.2 30.2 11 8 3/4 95 110 7/8 M20 7.7
    4 100 255 146 48 116.8 200 31.8 11 8 3/4 95 115 7/8 M20 10
    5 125 280 178 51 144.4 235 35 11 8 3/4 110 120 7/8 M20 12.7
    6 150 320 206 52 171.4 269.9 36.6 13 12 3/4 110 120 7/8 M20 17.7
    8 200 380 260 62 222.2 330.2 41.3 13 12 7/8 120 140 1 M24 26
    10 250 445 321 95 277.4 387.4 47.7 13 16 1 140 160 1 1/8 M27 36
    12 300 520 375 102 328.2 450.8 50.8 13 16 1 1/8 145 170 1 1/4 M30 52
    14 350 585 425 111 360.2 514.4 54 13 20 1 1/8 160 180 1 1/4 M30 75
    16 400 650 483 121 411.2 571.5 57.2 13 20 1 1/4 165 190 1 3/8 M33 86
    18 450 710 533 130 462.3 628.6 60.4 13 24 1 1/4 170 195 1 3/8 M33 113
    20 500 775 587 140 514.4 685.8 63.5 13 24 1 1/4 185 205 1 3/8 M33 143
    24 600 915 702 153 616 812.8 69.9 13 24 1 1/2 205 230 1 5/8 M39 216

    Class 400 Lap Joint Flange Dimensions

    Size in Inch Size in mm Outer Diameter Flange Thick. Lapped Thick. Lapped ID PCD Lapped Thick. Lapped Radius No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
    A B C D E G
    1/2 15 95 38 22 22.9 66.7 14.3 3 4 1/2 75 5/8 M14 1.3
    3/4 20 115 48 25 28.2 82.6 15.9 3 4 5/8 90 3/4 M16 1.5
    1 25 125 54 27 34.9 88.9 17.5 3 4 5/8 90 3/4 M16 1.8
    1 1/4 32 135 64 29 43.7 98.4 20.7 5 4 5/8 95 3/4 M16 2.3
    1 1/2 40 155 70 32 50 114.3 22.3 6 4 3/4 110 7/8 M20 3.2
    2 50 165 84 37 62.5 127 25.4 8 8 5/8 110 3/4 M16 4.1
    2 1/2 65 190 100 41 75.4 149.2 28.6 8 8 3/4 120 7/8 M20 5.9
    3 80 210 117 46 91.4 168.3 31.8 10 8 3/4 125 7/8 M20 7.3
    3 1/2 90 230 133 49 104.1 184.2 35 10 8 7/8 140 1 M24 9.6
    4 100 255 146 51 116.8 200 35 11 8 7/8 140 1 M24 11.8
    5 125 280 178 54 144.5 235 38.1 11 8 7/8 145 1 M24 14.1
    6 150 320 206 57 171.4 269.9 41.3 13 12 7/8 150 1 M24 20
    8 200 380 260 68 222.2 330 47.7 13 12 1 170 1 1/8 M27 31
    10 250 445 321 102 277.4 387.4 54 13 16 1 1/8 190 1 1/4 M30 42
    12 300 520 375 108 328.2 450.8 57.2 13 16 1 1/4 205 1 3/8 M33 59
    14 350 585 425 117 360.2 514.4 60.4 13 20 1 1/4 210 1 3/8 M33 82
    16 400 650 483 127 411.2 571.5 63.5 13 20 1 3/8 220 1 1/2 M36 107
    18 450 710 533 137 462.3 628.6 66.7 13 24 1 3/8 230 1 1/2 M36 130
    20 500 775 587 146 514.4 685.8 69.9 13 24 1 1/2 240 1 3/4 M39 157
    24 600 915 702 159 616 812.8 76.2 13 24 1 3/4 265 1 7/8 M45 232

    Class 600 Lap Joint Flange Dimensions

    Size in Inch Size in mm Outer Diameter Flange Thick. Lapped Thick. Lapped ID PCD Lapped Thick. Lapped Radius No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
    A B C D E G
    1/2 15 95 38 22 22.9 66.7 14.3 3 4 1/2 75 5/8 M14 1.3
    3/4 20 115 48 25 28.2 82.6 15.9 3 4 5/8 90 3/4 M16 1.4
    1 25 125 54 27 34.9 88.9 17.5 3 4 5/8 90 3/4 M16 1.8
    1 1/4 32 135 64 29 43.7 98.4 20.7 5 4 5/8 95 3/4 M16 2.3
    1 1/2 40 155 70 32 50 114.3 22.3 6 4 3/4 110 7/8 M20 3.2
    2 50 165 84 37 62.5 127 25.4 8 8 5/8 110 3/4 M16 4.1
    2 1/2 65 190 100 41 75.4 149.2 28.6 8 8 3/4 120 7/8 M20 5.9
    3 80 210 117 46 91.4 168.3 31.8 10 8 3/4 125 7/8 M20 7.3
    3 1/2 90 230 133 49 104.1 184.2 35 11 8 7/8 140 1 M24 9.6
    4 100 275 152 54 116.8 215.9 38.1 11 8 7/8 145 1 M24 16.8
    5 125 330 189 60 144.4 266.7 44.5 11 8 1 165 1 1/8 M27 29
    6 150 355 222 67 171.4 292.1 47.7 13 12 1 170 1 1/8 M27 36
    8 200 420 273 76 222.2 349.2 55.6 13 12 1 1/8 190 1 1/4 M30 52
    10 250 510 343 111 277.4 431.8 63.5 13 16 1 1/4 215 1 3/8 M33 77
    12 300 560 400 117 328.2 489 66.7 13 20 1 1/4 220 1 3/8 M33 91
    14 350 605 432 127 360.2 527 69.9 13 20 1 3/8 235 1 1/2 M36 105
    16 400 685 495 140 411.2 603.2 76.2 13 20 1 1/2 255 1 5/8 M39 150
    18 450 745 546 152 462.3 654 82.6 13 20 1 5/8 275 1 3/4 M42 182
    20 500 815 610 165 514.4 723.9 88.9 13 24 1 5/8 285 1 3/4 M42 232
    24 600 940 718 184 616 838.2 101.6 13 24 1 7/8 330 2 M48 332


    Class 900 Lap Joint Flange Dimensions

    Size in Inch Size in mm Outer Diameter Flange Thick. Lapped Thick. Lapped ID PCD Lapped Thick. Lapped Radius No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
    A B C D E G
    1/2 15 120 38 32 22.9 82.6 22.3 3 4 3/4 110 7/8 M20 1.8
    3/4 20 130 44 35 28.2 88.9 25.4 3 4 3/4 115 7/8 M20 2.3
    1 25 150 52 41 34.9 101.6 28.6 3 4 7/8 125 1 M24 3.6
    1 1/4 32 160 64 41 43.7 111.1 28.6 5 4 7/8 125 1 M24 4.1
    1 1/2 40 180 70 44 50 123.8 31.8 6 4 1 140 1 1/8 M27 5.5
    2 50 215 105 57 62.5 165.1 38.1 8 8 7/8 145 1 M24 11.5
    2 1/2 65 245 124 64 75.4 190.5 41.3 8 8 1 160 1 1/8 M27 16.5
    3 80 240 127 54 91.4 190.5 38.1 10 8 7/8 145 1 M24 12
    4 100 290 159 70 116.8 235 44.5 11 8 1 1/8 170 1 1/4 M30 24
    5 125 350 190 79 144.4 279.4 50.8 11 8 1 1/4 190 1 3/8 M33 38
    6 150 380 235 86 171.4 317.5 55.6 13 12 1 1/8 190 1 1/4 M30 50
    8 200 470 298 114 222.2 393.7 63.5 13 12 1 3/8 220 1 1/2 M36 78
    10 250 545 368 127 277.4 469.9 69.9 13 16 1 3/8 235 1 1/2 M36 112
    12 300 610 419 143 328.2 533.4 79.4 13 20 1 3/8 255 1 1/2 M36 148
    14 350 640 451 156 360.2 558.8 85.8 13 20 1 1/2 275 1 5/8 M39 182
    16 400 705 508 165 411.2 616 88.9 13 20 1 5/8 285 1 3/4 M42 193
    18 450 785 565 190 462.3 685.8 101.6 13 20 1 7/8 325 2 M48 258
    20 500 855 622 210 514.4 749.3 108 13 20 2 350 2 1/8 M52 317
    24 600 1040 749 267 616 901.7 139.7 13 20 2 1/2 440 2 5/8 M64 608

    Class 1500 Lap Joint Flange Dimensions

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


    Class 2500 Lap Joint Flange Dimensions

    Size in Inch Size in mm Outer Diameter Flange Thick. Lapped Thick. Lapped ID PCD Lapped Thick. Lapped Radius No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
    A B C D E G
    1/2 15 135 43 40 22.9 88.9 30.2 3 4 3/4 120 7/8 M20 3.2
    3/4 20 140 51 43 28.2 95.2 31.8 3 4 3/4 125 7/8 M20 3.7
    1 25 160 57 48 34.9 108 35 3 4 7/8 140 1 M24 5
    1 1/4 32 185 73 52 43.7 130.2 38.1 5 4 1 150 1 1/8 M27 7.5
    1 1/2 40 205 79 60 50 146 44.5 6 4 1 1/8 170 1 1/4 M30 10
    2 50 235 95 70 62.5 171.4 50.9 8 8 1 180 1 1/8 M27 17.5
    2 1/2 65 265 114 79 75.4 196.8 57.2 8 8 1 1/8 195 1 1/4 M30 23
    3 80 305 133 92 91.4 228.6 66.7 10 8 1 1/4 220 1 3/8 M33 37.8
    4 100 355 165 108 116.8 273 76.2 11 8 1 1/2 255 1 5/8 M39 57
    5 125 420 203 130 144.4 323.8 92.1 11 8 1 3/4 300 1 7/8 M45 95
    6 150 485 235 152 171.4 368.3 108 13 8 2 345 2 1/8 M52 148
    8 200 550 305 178 222.2 438.2 127 13 12 2 380 2 1/8 M52 221
    10 250 675 375 229 277.4 539.8 165.1 13 12 2 1/2 490 2 5/8 M64 425
    12 300 760 441 254 328.2 619.1 184.2 13 12 2 3/4 540 2 7/8 M72 500

    标题

    • No.38 Yangzi Road Shanghai city China

    • Phone: +8618632758880

    • Email: sales@wilsonpipeline.com

    • Web: https://topsteelmill.com

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