Поставщик труб из нержавеющей стали Вэньчжоу Kaixin Китай
A lap joint flange is a type of flange that is used to connect two pipes or tubes together. It consists of a flat face flange with a stub end, which is welded to the pipe or tube. The stub end is then connected to the mating flange using bolts. The advantage of using a lap joint flange is that it allows for easy alignment of the piping system and can be easily disassembled for maintenance or repair. It is commonly used in applications where the piping system may need to be modified or adjusted in the future.
Lap joint flange (simplified as LTF flange) shape is similar to slip on flange, it has a curved radius at the bore, which can connect with a stub end fittings and slide over the pipe. In this form, the pipe is usually welded to this stub end so the lap joint flange can rotate freely around the stub end.
The advantage of this combination that it will be easy with alignment for the bolt hole, easy to install and uninstall, much more convenient to do examinations and maintenance.
  Lap joint flange |
  Stainless steel Stub End |
  Lap Joint Flange with Lap Joint Stub End |
Содержание：
- Lap Joint FlangesSpecifications
- Types of Lap Joint Flanges
- Advantages of Lap Joint Flanges
- Lap Joint Flanges Applications
- Lap Joint Flanges Materials and Grades
- Lap Joint Flanges Dimensions
- Lap Joint Flanges Dimensions Tolerance
- ASME B16 5 Lap Joint Flange Pressure Rating
- Lap Joint Flanges Price List
- Differences between lap joint flange and slip on flange
Lap Joint Flanges Specifications
| ap Joint Flanges Standards | ANSI/ASME B16.5, B16.47 Series A & Б, B16.48, BS4504, БС 10, EN-1092, ОТ, 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 |
| ASME B16.5 Lap Joint Flanges Size Chart | 1/2″ (15 Примечание:) до 48″ (1200Примечание:) |
| Lap Joint Flanges Pressure Rating ANSI | Сорт 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Lap Joint Flanges |
| Покрытие | Масляная черная краска, Антикоррозионная краска, Оцинкованный, Желтый Прозрачный, Cold and Hot Dip Galvanized Lap Joint Flanges |
| Test Certificates | EN 10204/3.1B
Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, и т. д. |
| Most common types of Lap Joint Flanges | Forged / Threaded / Screwed / Тарелка |
| Connect Type/ Flange Face Type | Поднятое лицо (РФ), Кольцевое соединение типа (РТЖ), Плоское Лицо (ФФ), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Production technique | · Forged, Heat treated and machined |
| 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 |
| Lap Joint Flanges Uses & application | · Bitumen upgraders.
· Heavy oil refineries. · Nuclear power (mostly seamless). · Petrochemicals and acids. |
Types of Lap Joint Flanges
| ANSI B16.5 Lap Joint Flanges | Lap Joint Flange Dimensions |
| Lap Joint Raised Face Flange | Raised Faced Lap Joint Flanges |
| ASME B16.5 Loose Flanges | ANSI B16.5 Class 150 Lap Joint Flanges |
| ASME B16.47 Lap Joint Flange | JIS Lap Joint flange |
| Lap Joint Flange Flat Face | ASME B16.47 Series A and B Loose Flanges Exporter |
| ANSI B16.5 class 150 Loose Flange | АНСИ 150 Фланец внахлестку |
| Lap Joint Flange Class 300 | High Quality Loose Flanges |
| JIS Loose Flange | JIS 10K Lap Joint Flange |
| JIS 16K Lap Joint Flange | Lap Joint Flanges EN 1092-1 |
| Lap Joint flange High Temperature | Flat Faced Lap Joint Flanges Stockist |
| 36 Inch Lap joint flange | 30 Inch Lap Joint flange |
| Lap Joint Flange UNI 6090 | Metric Lap Joint flange |
| ASME B16.47 Series A and B Loose Flanges | Lap Joint Flanges ANSI |
Advantages of Lap Joint Flanges
Lap Joint Flanges Lap Joint flanges have certain special advantages over other flanges. These are as follows:
- Lap Joint flanges have the freedom to swivel around the pipe. This facilitates the lining up of opposing flange bolt holes.
- Lack of contact with the fluid inside the pipe leads to the greater durability of these flanges.
- In piping systems which corrode or erode quickly, the lap joint flanges may be salvaged for re-use.
- The pressure-holding capacity of lap joint flanges is little. But it is better than that of slip-on flanges.
- The Lap Joint works as a backing ring on the stub.
- The main advantage of lap joint flange is that the bolt holes can be aligned with the matching flange after the welds have been completed.
- They allow rotational alignment capability.
Lap Joint Flanges Applications
- Food Processing Industries
- Gas Processing Industries
- Power Generation Industries
- Fertilizers Industries
- Petrochemical Industries
- Oil & Gas Industries
- Chemical Industries
- Sugar Industries
Lap Joint Flanges Materials and Grades
| Stainless Steel Lap Joint Flange |
| АСТМ А 182, А 240 Ф 304, 304л, 304ЧАС, 316, 316л, 316Ti, 310, 310С, 321, 321ЧАС, 317, 347, 347ЧАС,904л |
| Carbon Steel Lap Joint Flange |
| АСТМ / АСМЭ А/СА 105 АСТМ / ASME A 350 , АСТМ А 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52 |
| Low Temperature Lap Joint Flange |
| ASTM A350 LF2, LF3, LF6 |
| Alloy Steel Lap Joint Flange |
| АСТМ / АСМЭ А/СА 182 & А 387 F1, F5, F9, F11, F12, F22, F91 |
| Дуплекс & Super Duplex Steel Lap Joint Flange |
| АСТМ / АСМЭ А/СА 182 Ф 44, Ф 45, F51, Ф 53, Ф 55, Ф 60, Ф 61 |
| Nickel Alloy Lap Joint Flange |
| НАС 10276 (HASTELLOY C 276), НАС 6625 (ИНКОНЕЛЬ 625), НАС 6601 (ИНКОНЕЛЬ 601), НАС 6600 (ИНКОНЕЛЬ 600), НАС 8825 (ИНКОНЕЛЬ 825), НАС 8020 (ALLOY 20 / 20 CB 3), НАС 4400 (МОНЕЛЬ 400), НАС 2201 (НИКЕЛЬ 201), АСТМ / ASME SB 336 НАС 2200 (НИКЕЛЬ 200) |
| High Yield Lap Joint Flanges |
| ASTM A694 F42, F52, F60, F65, F70 |
Lap Joint Flanges Dimensions
Lap Joint Flanges Dimensions Drawing
LAP JOINT FLANGE DIMENSIONS CLASS 150, 150 LB LAP JOINT FLANGE
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина машинного болта | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | ||||||||||
| 1/2 | 15 | 90 | 30 | 16 | 22.9 | 60.3 | 11.2 | 3 | 4 | 1/2 | 50 | 55 | 5/8 | М14 | 0.8 |
| 3/4 | 20 | 100 | 38 | 16 | 28.2 | 69.9 | 12.7 | 3 | 4 | 1/2 | 50 | 65 | 5/8 | М14 | 0.9 |
| 1 | 25 | 110 | 49 | 17 | 34.9 | 79.4 | 14.3 | 3 | 4 | 1/2 | 55 | 65 | 5/8 | М14 | 0.9 |
| 1 1/4 | 32 | 115 | 59 | 21 | 43.7 | 88.9 | 15.9 | 5 | 4 | 1/2 | 55 | 70 | 5/8 | М14 | 1.4 |
| 1 1/2 | 40 | 125 | 65 | 22 | 50 | 98.4 | 17.5 | 6 | 4 | 1/2 | 65 | 70 | 5/8 | М14 | 1.4 |
| 2 | 50 | 150 | 78 | 25 | 62.5 | 120.7 | 19.1 | 8 | 4 | 5/8 | 70 | 85 | 3/4 | М16 | 2.3 |
| 2 1/2 | 65 | 180 | 90 | 29 | 75.4 | 139.7 | 22.3 | 8 | 4 | 5/8 | 75 | 90 | 3/4 | М16 | 3.2 |
| 3 | 80 | 190 | 108 | 30 | 91.4 | 152.4 | 23.9 | 10 | 4 | 5/8 | 75 | 90 | 3/4 | М16 | 3.7 |
| 3 1/2 | 90 | 215 | 122 | 32 | 104.1 | 177.8 | 23.9 | 11 | 8 | 5/8 | 75 | 90 | 3/4 | М16 | 5 |
| 4 | 100 | 230 | 135 | 33 | 116.8 | 190.5 | 23.9 | 11 | 8 | 5/8 | 75 | 90 | 3/4 | М16 | 5.9 |
| 5 | 125 | 255 | 164 | 36 | 144.4 | 215.9 | 23.9 | 11 | 8 | 3/4 | 85 | 95 | 7/8 | М20 | 6.8 |
| 6 | 150 | 280 | 192 | 40 | 171.4 | 241.3 | 25.4 | 13 | 8 | 3/4 | 85 | 100 | 7/8 | М20 | 8.6 |
| 8 | 200 | 345 | 246 | 44 | 222.2 | 298.5 | 28.6 | 13 | 8 | 3/4 | 90 | 110 | 7/8 | М20 | 13.7 |
| 10 | 250 | 405 | 305 | 49 | 277.4 | 362 | 30.2 | 13 | 12 | 7/8 | 100 | 115 | 1 | М24 | 19.5 |
| 12 | 300 | 485 | 365 | 56 | 328.2 | 431.8 | 31.8 | 13 | 12 | 7/8 | 100 | 120 | 1 | М24 | 29 |
| 14 | 350 | 535 | 400 | 79 | 360.2 | 476.3 | 35 | 13 | 12 | 1 | 115 | 135 | 1 1/8 | М27 | 41 |
| 16 | 400 | 595 | 457 | 87 | 411.2 | 539.8 | 36.6 | 13 | 16 | 1 | 115 | 135 | 1 1/8 | М27 | 54 |
| 18 | 450 | 635 | 505 | 97 | 462.3 | 577.9 | 39.7 | 13 | 16 | 1 1/8 | 125 | 145 | 1 1/4 | М30 | 59 |
| 20 | 500 | 700 | 559 | 103 | 514.4 | 635 | 42.9 | 13 | 20 | 1 1/8 | 140 | 160 | 1 1/4 | М30 | 75 |
| 24 | 600 | 815 | 663 | 111 | 616 | 749.3 | 47.9 | 13 | 20 | 1 1/4 | 150 | 170 | 1 3/8 | М33 | 100 |
The dimensions are in millimeters
Source : ASME B16.5 – 2007
LAP JOINT FLANGE CLASS 300 DIMENSIONS, 300 LB LAP JOINT FLANGE
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина машинного болта | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | ||||||||||
| 1/2 | 15 | 95 | 38 | 22 | 22.9 | 66.7 | 14.3 | 3 | 4 | 1/2 | 55 | 65 | 5/8 | М14 | 1.2 |
| 3/4 | 20 | 115 | 48 | 25 | 28.2 | 82.6 | 15.9 | 3 | 4 | 5/8 | 65 | 75 | 3/4 | М16 | 1.4 |
| 1 | 25 | 125 | 54 | 27 | 34.9 | 88.9 | 17.5 | 3 | 4 | 5/8 | 65 | 75 | 3/4 | М16 | 1.4 |
| 1 1/4 | 32 | 135 | 64 | 27 | 43.7 | 98.4 | 19.1 | 5 | 4 | 5/8 | 70 | 85 | 3/4 | М16 | 1.8 |
| 1 1/2 | 40 | 155 | 70 | 30 | 50 | 114.3 | 20.7 | 6 | 4 | 3/4 | 75 | 90 | 7/8 | М20 | 2.7 |
| 2 | 50 | 165 | 84 | 33 | 62.5 | 127 | 22.3 | 8 | 8 | 5/8 | 75 | 90 | 3/4 | М16 | 3.2 |
| 2 1/2 | 65 | 190 | 100 | 38 | 75.4 | 149.2 | 25.4 | 8 | 8 | 3/4 | 85 | 100 | 7/8 | М20 | 4.6 |
| 3 | 80 | 210 | 117 | 43 | 91.4 | 168.3 | 28.6 | 10 | 8 | 3/4 | 90 | 110 | 7/8 | М20 | 5.9 |
| 3 1/2 | 90 | 230 | 133 | 44 | 104.1 | 184.2 | 30.2 | 11 | 8 | 3/4 | 95 | 110 | 7/8 | М20 | 7.7 |
| 4 | 100 | 255 | 146 | 48 | 116.8 | 200 | 31.8 | 11 | 8 | 3/4 | 95 | 115 | 7/8 | М20 | 10 |
| 5 | 125 | 280 | 178 | 51 | 144.4 | 235 | 35 | 11 | 8 | 3/4 | 110 | 120 | 7/8 | М20 | 12.7 |
| 6 | 150 | 320 | 206 | 52 | 171.4 | 269.9 | 36.6 | 13 | 12 | 3/4 | 110 | 120 | 7/8 | М20 | 17.7 |
| 8 | 200 | 380 | 260 | 62 | 222.2 | 330.2 | 41.3 | 13 | 12 | 7/8 | 120 | 140 | 1 | М24 | 26 |
| 10 | 250 | 445 | 321 | 95 | 277.4 | 387.4 | 47.7 | 13 | 16 | 1 | 140 | 160 | 1 1/8 | М27 | 36 |
| 12 | 300 | 520 | 375 | 102 | 328.2 | 450.8 | 50.8 | 13 | 16 | 1 1/8 | 145 | 170 | 1 1/4 | М30 | 52 |
| 14 | 350 | 585 | 425 | 111 | 360.2 | 514.4 | 54 | 13 | 20 | 1 1/8 | 160 | 180 | 1 1/4 | М30 | 75 |
| 16 | 400 | 650 | 483 | 121 | 411.2 | 571.5 | 57.2 | 13 | 20 | 1 1/4 | 165 | 190 | 1 3/8 | М33 | 86 |
| 18 | 450 | 710 | 533 | 130 | 462.3 | 628.6 | 60.4 | 13 | 24 | 1 1/4 | 170 | 195 | 1 3/8 | М33 | 113 |
| 20 | 500 | 775 | 587 | 140 | 514.4 | 685.8 | 63.5 | 13 | 24 | 1 1/4 | 185 | 205 | 1 3/8 | М33 | 143 |
| 24 | 600 | 915 | 702 | 153 | 616 | 812.8 | 69.9 | 13 | 24 | 1 1/2 | 205 | 230 | 1 5/8 | М39 | 216 |
The dimensions are in millimeters
Source : ASME B16.5 – 2007
LAP JOINT FLANGE DIMENSIONS CLASS 400
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | |||||||||
| 1/2 | 15 | 95 | 38 | 22 | 22.9 | 66.7 | 14.3 | 3 | 4 | 1/2 | 75 | 5/8 | М14 | 1.3 |
| 3/4 | 20 | 115 | 48 | 25 | 28.2 | 82.6 | 15.9 | 3 | 4 | 5/8 | 90 | 3/4 | М16 | 1.5 |
| 1 | 25 | 125 | 54 | 27 | 34.9 | 88.9 | 17.5 | 3 | 4 | 5/8 | 90 | 3/4 | М16 | 1.8 |
| 1 1/4 | 32 | 135 | 64 | 29 | 43.7 | 98.4 | 20.7 | 5 | 4 | 5/8 | 95 | 3/4 | М16 | 2.3 |
| 1 1/2 | 40 | 155 | 70 | 32 | 50 | 114.3 | 22.3 | 6 | 4 | 3/4 | 110 | 7/8 | М20 | 3.2 |
| 2 | 50 | 165 | 84 | 37 | 62.5 | 127 | 25.4 | 8 | 8 | 5/8 | 110 | 3/4 | М16 | 4.1 |
| 2 1/2 | 65 | 190 | 100 | 41 | 75.4 | 149.2 | 28.6 | 8 | 8 | 3/4 | 120 | 7/8 | М20 | 5.9 |
| 3 | 80 | 210 | 117 | 46 | 91.4 | 168.3 | 31.8 | 10 | 8 | 3/4 | 125 | 7/8 | М20 | 7.3 |
| 3 1/2 | 90 | 230 | 133 | 49 | 104.1 | 184.2 | 35 | 10 | 8 | 7/8 | 140 | 1 | М24 | 9.6 |
| 4 | 100 | 255 | 146 | 51 | 116.8 | 200 | 35 | 11 | 8 | 7/8 | 140 | 1 | М24 | 11.8 |
| 5 | 125 | 280 | 178 | 54 | 144.5 | 235 | 38.1 | 11 | 8 | 7/8 | 145 | 1 | М24 | 14.1 |
| 6 | 150 | 320 | 206 | 57 | 171.4 | 269.9 | 41.3 | 13 | 12 | 7/8 | 150 | 1 | М24 | 20 |
| 8 | 200 | 380 | 260 | 68 | 222.2 | 330 | 47.7 | 13 | 12 | 1 | 170 | 1 1/8 | М27 | 31 |
| 10 | 250 | 445 | 321 | 102 | 277.4 | 387.4 | 54 | 13 | 16 | 1 1/8 | 190 | 1 1/4 | М30 | 42 |
| 12 | 300 | 520 | 375 | 108 | 328.2 | 450.8 | 57.2 | 13 | 16 | 1 1/4 | 205 | 1 3/8 | М33 | 59 |
| 14 | 350 | 585 | 425 | 117 | 360.2 | 514.4 | 60.4 | 13 | 20 | 1 1/4 | 210 | 1 3/8 | М33 | 82 |
| 16 | 400 | 650 | 483 | 127 | 411.2 | 571.5 | 63.5 | 13 | 20 | 1 3/8 | 220 | 1 1/2 | М36 | 107 |
| 18 | 450 | 710 | 533 | 137 | 462.3 | 628.6 | 66.7 | 13 | 24 | 1 3/8 | 230 | 1 1/2 | М36 | 130 |
| 20 | 500 | 775 | 587 | 146 | 514.4 | 685.8 | 69.9 | 13 | 24 | 1 1/2 | 240 | 1 3/4 | М39 | 157 |
| 24 | 600 | 915 | 702 | 159 | 616 | 812.8 | 76.2 | 13 | 24 | 1 3/4 | 265 | 1 7/8 | М45 | 232 |
LAP JOINT FLANGE DIMENSIONS CLASS 600
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | |||||||||
| 1/2 | 15 | 95 | 38 | 22 | 22.9 | 66.7 | 14.3 | 3 | 4 | 1/2 | 75 | 5/8 | М14 | 1.3 |
| 3/4 | 20 | 115 | 48 | 25 | 28.2 | 82.6 | 15.9 | 3 | 4 | 5/8 | 90 | 3/4 | М16 | 1.4 |
| 1 | 25 | 125 | 54 | 27 | 34.9 | 88.9 | 17.5 | 3 | 4 | 5/8 | 90 | 3/4 | М16 | 1.8 |
| 1 1/4 | 32 | 135 | 64 | 29 | 43.7 | 98.4 | 20.7 | 5 | 4 | 5/8 | 95 | 3/4 | М16 | 2.3 |
| 1 1/2 | 40 | 155 | 70 | 32 | 50 | 114.3 | 22.3 | 6 | 4 | 3/4 | 110 | 7/8 | М20 | 3.2 |
| 2 | 50 | 165 | 84 | 37 | 62.5 | 127 | 25.4 | 8 | 8 | 5/8 | 110 | 3/4 | М16 | 4.1 |
| 2 1/2 | 65 | 190 | 100 | 41 | 75.4 | 149.2 | 28.6 | 8 | 8 | 3/4 | 120 | 7/8 | М20 | 5.9 |
| 3 | 80 | 210 | 117 | 46 | 91.4 | 168.3 | 31.8 | 10 | 8 | 3/4 | 125 | 7/8 | М20 | 7.3 |
| 3 1/2 | 90 | 230 | 133 | 49 | 104.1 | 184.2 | 35 | 11 | 8 | 7/8 | 140 | 1 | М24 | 9.6 |
| 4 | 100 | 275 | 152 | 54 | 116.8 | 215.9 | 38.1 | 11 | 8 | 7/8 | 145 | 1 | М24 | 16.8 |
| 5 | 125 | 330 | 189 | 60 | 144.4 | 266.7 | 44.5 | 11 | 8 | 1 | 165 | 1 1/8 | М27 | 29 |
| 6 | 150 | 355 | 222 | 67 | 171.4 | 292.1 | 47.7 | 13 | 12 | 1 | 170 | 1 1/8 | М27 | 36 |
| 8 | 200 | 420 | 273 | 76 | 222.2 | 349.2 | 55.6 | 13 | 12 | 1 1/8 | 190 | 1 1/4 | М30 | 52 |
| 10 | 250 | 510 | 343 | 111 | 277.4 | 431.8 | 63.5 | 13 | 16 | 1 1/4 | 215 | 1 3/8 | М33 | 77 |
| 12 | 300 | 560 | 400 | 117 | 328.2 | 489 | 66.7 | 13 | 20 | 1 1/4 | 220 | 1 3/8 | М33 | 91 |
| 14 | 350 | 605 | 432 | 127 | 360.2 | 527 | 69.9 | 13 | 20 | 1 3/8 | 235 | 1 1/2 | М36 | 105 |
| 16 | 400 | 685 | 495 | 140 | 411.2 | 603.2 | 76.2 | 13 | 20 | 1 1/2 | 255 | 1 5/8 | М39 | 150 |
| 18 | 450 | 745 | 546 | 152 | 462.3 | 654 | 82.6 | 13 | 20 | 1 5/8 | 275 | 1 3/4 | М42 | 182 |
| 20 | 500 | 815 | 610 | 165 | 514.4 | 723.9 | 88.9 | 13 | 24 | 1 5/8 | 285 | 1 3/4 | М42 | 232 |
| 24 | 600 | 940 | 718 | 184 | 616 | 838.2 | 101.6 | 13 | 24 | 1 7/8 | 330 | 2 | М48 | 332 |
LAP JOINT FLANGE DIMENSIONS CLASS 900
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | |||||||||
| 1/2 | 15 | 120 | 38 | 32 | 22.9 | 82.6 | 22.3 | 3 | 4 | 3/4 | 110 | 7/8 | М20 | 1.8 |
| 3/4 | 20 | 130 | 44 | 35 | 28.2 | 88.9 | 25.4 | 3 | 4 | 3/4 | 115 | 7/8 | М20 | 2.3 |
| 1 | 25 | 150 | 52 | 41 | 34.9 | 101.6 | 28.6 | 3 | 4 | 7/8 | 125 | 1 | М24 | 3.6 |
| 1 1/4 | 32 | 160 | 64 | 41 | 43.7 | 111.1 | 28.6 | 5 | 4 | 7/8 | 125 | 1 | М24 | 4.1 |
| 1 1/2 | 40 | 180 | 70 | 44 | 50 | 123.8 | 31.8 | 6 | 4 | 1 | 140 | 1 1/8 | М27 | 5.5 |
| 2 | 50 | 215 | 105 | 57 | 62.5 | 165.1 | 38.1 | 8 | 8 | 7/8 | 145 | 1 | М24 | 11.5 |
| 2 1/2 | 65 | 245 | 124 | 64 | 75.4 | 190.5 | 41.3 | 8 | 8 | 1 | 160 | 1 1/8 | М27 | 16.5 |
| 3 | 80 | 240 | 127 | 54 | 91.4 | 190.5 | 38.1 | 10 | 8 | 7/8 | 145 | 1 | М24 | 12 |
| 4 | 100 | 290 | 159 | 70 | 116.8 | 235 | 44.5 | 11 | 8 | 1 1/8 | 170 | 1 1/4 | М30 | 24 |
| 5 | 125 | 350 | 190 | 79 | 144.4 | 279.4 | 50.8 | 11 | 8 | 1 1/4 | 190 | 1 3/8 | М33 | 38 |
| 6 | 150 | 380 | 235 | 86 | 171.4 | 317.5 | 55.6 | 13 | 12 | 1 1/8 | 190 | 1 1/4 | М30 | 50 |
| 8 | 200 | 470 | 298 | 114 | 222.2 | 393.7 | 63.5 | 13 | 12 | 1 3/8 | 220 | 1 1/2 | М36 | 78 |
| 10 | 250 | 545 | 368 | 127 | 277.4 | 469.9 | 69.9 | 13 | 16 | 1 3/8 | 235 | 1 1/2 | М36 | 112 |
| 12 | 300 | 610 | 419 | 143 | 328.2 | 533.4 | 79.4 | 13 | 20 | 1 3/8 | 255 | 1 1/2 | М36 | 148 |
| 14 | 350 | 640 | 451 | 156 | 360.2 | 558.8 | 85.8 | 13 | 20 | 1 1/2 | 275 | 1 5/8 | М39 | 182 |
| 16 | 400 | 705 | 508 | 165 | 411.2 | 616 | 88.9 | 13 | 20 | 1 5/8 | 285 | 1 3/4 | М42 | 193 |
| 18 | 450 | 785 | 565 | 190 | 462.3 | 685.8 | 101.6 | 13 | 20 | 1 7/8 | 325 | 2 | М48 | 258 |
| 20 | 500 | 855 | 622 | 210 | 514.4 | 749.3 | 108 | 13 | 20 | 2 | 350 | 2 1/8 | М52 | 317 |
| 24 | 600 | 1040 | 749 | 267 | 616 | 901.7 | 139.7 | 13 | 20 | 2 1/2 | 440 | 2 5/8 | М64 | 608 |
LAP JOINT FLANGE DIMENSIONS CLASS 1500
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | |||||||||
| 1/2 | 15 | 120 | 38 | 32 | 22.9 | 82.6 | 22.3 | 3 | 4 | 3/4 | 110 | 7/8 | М20 | 1.8 |
| 3/4 | 20 | 130 | 44 | 35 | 28.2 | 88.9 | 25.4 | 3 | 4 | 3/4 | 115 | 7/8 | М20 | 2.3 |
| 1 | 25 | 150 | 52 | 41 | 34.9 | 101.6 | 28.6 | 3 | 4 | 7/8 | 125 | 1 | М24 | 3.7 |
| 1 1/4 | 32 | 160 | 64 | 41 | 43.7 | 111.1 | 28.6 | 5 | 4 | 7/8 | 125 | 1 | М24 | 4.1 |
| 1 1/2 | 40 | 180 | 70 | 44 | 50 | 123.8 | 31.8 | 6 | 4 | 1 | 140 | 1 1/8 | М27 | 5.5 |
| 2 | 50 | 215 | 105 | 57 | 62.5 | 165.1 | 38.1 | 8 | 8 | 7/8 | 145 | 1 | М24 | 9.8 |
| 2 1/2 | 65 | 245 | 124 | 64 | 75.4 | 190.5 | 41.3 | 8 | 8 | 1 | 160 | 1 1/8 | М27 | 16.4 |
| 3 | 80 | 265 | 133 | 73 | 91.4 | 203.2 | 47.7 | 10 | 8 | 1 1/8 | 180 | 1 1/4 | М30 | 21.8 |
| 4 | 100 | 310 | 162 | 90 | 116.8 | 241.3 | 54 | 11 | 8 | 1 1/4 | 195 | 1 3/8 | М33 | 33 |
| 5 | 125 | 375 | 197 | 105 | 144.4 | 292.1 | 73.1 | 11 | 8 | 1 1/2 | 250 | 1 5/8 | М39 | 59 |
| 6 | 150 | 395 | 229 | 119 | 171.4 | 317.5 | 82.6 | 13 | 12 | 1 3/8 | 260 | 1 1/2 | М36 | 75 |
| 8 | 200 | 485 | 292 | 143 | 222.2 | 393.7 | 92.1 | 13 | 12 | 1 5/8 | 290 | 1 3/4 | М42 | 118 |
| 10 | 250 | 585 | 368 | 178 | 277.4 | 482.6 | 108 | 13 | 12 | 1 7/8 | 335 | 2 | М48 | 198 |
| 12 | 300 | 675 | 451 | 219 | 328.2 | 571.5 | 123.9 | 13 | 16 | 2 | 375 | 2 1/8 | М52 | 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 | М64 | 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 |
LAP JOINT FLANGE DIMENSIONS CLASS 2500
| Размер в дюймах | Размер в мм | Outer Diameter | Фланец толстый. | Lapped Thick. | Lapped ID | ПКД | Lapped Thick. | Lapped Radius | Количество болтов | Размер болта UNC | Длина RF шпильки | Размер отверстия | Размер шпильки ISO | Вес в кг |
| А | Б | С | Д | Э | Г | |||||||||
| 1/2 | 15 | 135 | 43 | 40 | 22.9 | 88.9 | 30.2 | 3 | 4 | 3/4 | 120 | 7/8 | М20 | 3.2 |
| 3/4 | 20 | 140 | 51 | 43 | 28.2 | 95.2 | 31.8 | 3 | 4 | 3/4 | 125 | 7/8 | М20 | 3.7 |
| 1 | 25 | 160 | 57 | 48 | 34.9 | 108 | 35 | 3 | 4 | 7/8 | 140 | 1 | М24 | 5 |
| 1 1/4 | 32 | 185 | 73 | 52 | 43.7 | 130.2 | 38.1 | 5 | 4 | 1 | 150 | 1 1/8 | М27 | 7.5 |
| 1 1/2 | 40 | 205 | 79 | 60 | 50 | 146 | 44.5 | 6 | 4 | 1 1/8 | 170 | 1 1/4 | М30 | 10 |
| 2 | 50 | 235 | 95 | 70 | 62.5 | 171.4 | 50.9 | 8 | 8 | 1 | 180 | 1 1/8 | М27 | 17.5 |
| 2 1/2 | 65 | 265 | 114 | 79 | 75.4 | 196.8 | 57.2 | 8 | 8 | 1 1/8 | 195 | 1 1/4 | М30 | 23 |
| 3 | 80 | 305 | 133 | 92 | 91.4 | 228.6 | 66.7 | 10 | 8 | 1 1/4 | 220 | 1 3/8 | М33 | 37.8 |
| 4 | 100 | 355 | 165 | 108 | 116.8 | 273 | 76.2 | 11 | 8 | 1 1/2 | 255 | 1 5/8 | М39 | 57 |
| 5 | 125 | 420 | 203 | 130 | 144.4 | 323.8 | 92.1 | 11 | 8 | 1 3/4 | 300 | 1 7/8 | М45 | 95 |
| 6 | 150 | 485 | 235 | 152 | 171.4 | 368.3 | 108 | 13 | 8 | 2 | 345 | 2 1/8 | М52 | 148 |
| 8 | 200 | 550 | 305 | 178 | 222.2 | 438.2 | 127 | 13 | 12 | 2 | 380 | 2 1/8 | М52 | 221 |
| 10 | 250 | 675 | 375 | 229 | 277.4 | 539.8 | 165.1 | 13 | 12 | 2 1/2 | 490 | 2 5/8 | М64 | 425 |
| 12 | 300 | 760 | 441 | 254 | 328.2 | 619.1 | 184.2 | 13 | 12 | 2 3/4 | 540 | 2 7/8 | M72 | 500 |
Lap Joint Flanges Price List
| Lap Joint Flanges type | Lap Joint Flanges Price in USD |
| Stainless Steel Lap Joint Flanges | USD $ 22.42 /Kg |
| Carbon steel Lap Joint Flanges | USD $16.56 /Kg |
| Alloy steel Lap Joint Flanges | USD $ 20.08 /Kg |
| ANSI b16 5 Lap Joint Flanges | USD $ 25.22 /Kg |
| ASME b16.47 Lap Joint Flanges | USD $ 19.28 /Kg |
Differences between lap joint flange and slip on flange
Slip on flange is essentially a ring placed over the pipe end. And the flange face extending a sufficient distance from the pipe end, so as to apply a weld on the inner diameter. The outer diameter of slip on flange can also be welded to the rear side of flange. Comparing to weld neck flange, slip on flange has lower material cost and easier to align.
The lap flange is very similar to a slip on flange. From the outside, it almost looks like the same. But you look on the backside, the holes and faces of lap joint flange has a curved radius to accommodate the lap joint stub end.
If type B or type C stub end is used, the slip on flange can be used as the lap joint flange.
