ASME/ANSI B16.5 600 Class Lap Joint Flange/Standards, Dimensions & Weight

Lap Joint Flanges, also known as Loose flanges, are utilized in piping systems where lapped pipes or lap joint stub ends are fitted. These items come with a higher initial cost when compared to welding neck flanges, but their combined cost is only approximately one-third higher. Their pressure-holding ability is similar to slip-on flanges and their fatigue life is much less than that of welding neck flanges.heir ability to swivel flanges and align bolt holes considerably simplifies the erection of large diameter or rigid piping. Lap Joint flanges have some unique benefits. The ability to swivel around the pipe enables the opposing flange bolt holes to be lined up easily. Furthermore, the lack of contact with fluid in the pipe often permits the use of inexpensive carbon steel flanges with corrosion-resistant pipes. In systems that corrode or erode quickly, these flanges can be salvaged for reuse.

  • Our company is a manufacturer of ASME/ANSI B16.5 600LB Lap Joint Flange, which is precisely engineered in accordance with international quality standards. For detailed dimensions of 600 Class Lap Joint flange, kindly check the table below. Also, you can download the datasheet.
600 Class Lap Joint Flange Drawing ASME/ANSI B16.5
Product Lap Joint Flange
Pressure Rating 600 lb, 600 Class
Dimensional Specification ASME/ANSI B16.5
Size 1/2″ to 24″
Surface Treatment Anti-rust Oil, Paint, Zinc, Hot Dipped Galvanized
Grades 304, 304L, 316L, 321, 347, 904L, Duplex, Carbon Steel, Nickel Alloys
Test Certificates As per EN 10204 3.1
Inspection Videos, Pictures, Inspection Report with Goods
Pipe Normal Diam. O.D. Flange Thk. Of Flange Min Diam.
of
Hub
Diameter of Raised Face Length Hub Bore Width Corner
Radius
of Bore
Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
Approx. Weight
inch dn O C X G Y B R BC BH BN BD KG/PCS LB/PCS
1/2″ 15 95.5 14.2 38.1 35.1 22.4 22.9 3 66.5 15.7 4 1/2″ 0.8 1.8
3/4″ 20 117. 5 15.7 47.8 42.9 25.4 28.2 3 82.6 19.1 4 5/8″ 1.4 3.1
1″ 25 124. 0 17.5 53.8 50.8 26.9 35.1 3 88.9 19.1 4 5/8″ 1.7 3.7
1-1/4″ 32 133. 5 20.6 63.5 63.5 28.4 43.7 4.8 98.6 19.1 4 5/8″ 2.1 4.6
1-1/2″ 40 155. 5 22.4 69.9 73.2 31.8 50 6.4 114.3 22.4 4 3/4″ 3.1 6.8
2″ 50 165. 0 25.4 84.1 91.9 36.6 62.5 7.9 127 19.1 8 5/8″ 3.9 8.6
2-1/2″ 65 190. 5 28.4 100.1 104.6 41.1 75.4 7.9 149.4 22.4 8 3/4″ 5.4 11.9
3″ 80 209. 5 31.8 117.3 127 46 91.4 9.7 168.1 22.4 8 3/4″ 7.3 16.1
3-1/2″ 90 228. 5 35.1 133.4 139.7 49.3 104. 1 9.7 184.2 25.4 8 7/8″ 9 19.8
4″ 100 273. 0 38.1 152.4 157.2 53.8 116. 8 11.2 215.9 25.4 8 7/8″ 16.1 35.5
5″ 125 330. 0 44.5 189 185.7 60.5 144. 5 11.2 266.7 28.4 8 1″ 27.5 60.6
6″ 150 355. 5 47.8 222.3 215.9 66.5 171. 5 12.7 292.1 28.4 12 1″ 35.4 78
8″ 200 419. 0 55.6 273.1 269.7 76.2 222. 3 12.7 349.3 31.8 12 1 1/8″ 49.5 109
10″ 250 508. 0 63.5 342.9 323.9 111. 3 277. 4 12.7 431.8 35.1 16 1 1/4″ 74 163
12″ 300 559. 0 66.5 400.1 381 117. 3 328. 2 12.7 489 35.1 20 1 1/4″ 89 196
14″ 350 603. 5 69.9 431.8 412.8 127. 0 360. 2 12.7 527.1 38.1 20 1 3/8″ 111 245
16″ 400 686. 0 76.2 495.3 469.9 139. 7 411. 2 12.7 603.3 41.1 20 1 1/2″ 165 363
18″ 450 743. 0 82.6 546.1 533.4 152. 4 462. 3 12.7 654.1 44.5 20 1 5/8″ 194 428
20″ 500 813. 0 88.9 609.6 584.2 165. 1 514. 4 12.7 723.9 44.5 24 1 5/8″ 255 562
24″ 600 940. 0 101.6 717.6 692.2 184. 2 616. 0 12.7 838.2 50.8 24 1 7/8″ 362 798