Your most trusted one-stop Stainless Steel Lap Joint Flange manufacturer
Product Categories
Stainless Steel Lap Joint Flange
1.Types: Slip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc;
2.Standard:
(1) ANSI B16.5, A105 150LB / 300LB / 600LB / 900LB / 1500LB / 2500LB
(2) DIN 2573 PN6 / DIN 2576 PN10 / DIN2502 PN16 / DIN2503 P25-40 / DIN2566 PN16 / DIN2631-2635 RST37.2 OR C22.8
(3) JIS SS400 OR SF440 5K / 10K / 16K / 20K / 30K
(4) UNI 2276 / 2277 / 2278 / 6084 / 6089 / 6090 / 2544 / 2282 / 6091-6093
(5) EN1092 PN6 / PN10 / PN16 / PN25 / PN40 / TYPE1 TYPE2 TYPE 5 TYPE 12 TYPE 13
(6) BS4504 SANI1123 1000/3, 1600/3, 2500/3, T/D, T/E, T/F carbon steel flange
(7) AS2129 TABLE D / TABLE H / TABLE E carbon steel flange
(8) GOST 12820-80 / 12821-80 carbon steel flange
3.Wall Thickness: Sch10, Sch20 , Sch30, STD, Sch40, XS,Sch80, Sch100, Sch120, Sch140, XXS;
4.Pressure Rating: Class 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS, 2000LBS, 3000LBS, 6000LBS, 9000 LBS;
5.Size: 1/2″ – 24″;
6.Surface treatment: Anti-rust oil, black / yellow / transparent / electric galvanized / hot galvanized.
Supports Third-party inspection
OEM/ODM Service
BAFAW provides end-to-end support for your pipeline projects, delivering a true one-stop OEM/ODM solution that efficiently and reliably fulfills your custom requirements.
Compliance with Standards
All BAFAW’s products comply with international standards such as ASME, ANSI, DIN, and ISO. We provide comprehensive material and inspection reports to ensure worry-free project audits and safe usage.
Large or Small Order
BAFAW delivers with the same professionalism whether you need bulk production or just a few samples. Our flexible model supports rapid sampling across categories and stable large-scale customization.
Specifications
forged steel flange dimensions class150
Nominal size Outside diam. of flange Thick. of flange Diam. of raised face No. of holes Diam. of holes Diam. of bolts Diam. of bolt circle Approx. weight pounds Kg O C R in. 1/2″ 3.75 0.56 1.38 4 0.62 1/2 2.62 2 mm. 95.3 14.2 35.1 15.7 12.7 66.5 1 in. 3/4″ 4.62 0.62 1.69 4 0.75 5/8 3.25 3 mm. 117.3 15.7 42.9 19.1 15.9 82.6 1 in. 1″ 4.88 0.69 2 4 0.75 5/8 3.5 4 mm. 124 17.5 50.8 19.1 15.9 88.9 2 in. 1 1/4″ 5.25 0.81 2.5 4 0.75 5/8 3.88 5 mm. 133.4 20.6 63.5 19.1 15.9 98.6 2 in. 1 1/2″ 6.12 0.88 2.88 4 0.88 3/4 4.5 8 mm. 155.4 22.4 73.2 22.4 19.1 114.3 4 in. 2″ 6.5 1 3.62 8 0.75 5/8 5 10 mm. 165.1 25.4 91.9 19.1 15.9 127 5 in. 2 1/2″ 7.5 1.12 4.12 8 0.88 3/4 5.88 15 mm. 190.5 28.4 104.6 22.4 19.1 149.4 7 in. 3″ 8.25 1.25 5 8 0.88 3/4 6.62 20 mm. 209.6 31.8 127 22.4 19.1 168.1 9 in. 3 1/2″ 9 1.38 5.5 8 1 7/8 7.25 29 mm. 228.6 35.1 139.7 25.4 22.2 184.2 13 in. 4″ 10.75 1.5 6.19 8 1 7/8 8.5 41 mm. 273.1 38.1 157.2 25.4 22.2 215.9 19 in. 5″ 13 1.75 7.31 8 1.12 1 10.5 68 mm. 330.2 44.5 185.7 28.4 25.4 266.7 31 in. 6″ 14 1.88 8.5 12 1.12 1 11.5 86 mm. 355.6 47.8 215.9 28.4 25.4 292.1 39 in. 8″ 16.5 2.19 10.62 12 1.25 1 1/8 13.75 140 mm. 419.1 55.6 269.7 31.8 28.6 349.3 64 in. 10″ 20 2.5 12.75 16 1.38 1 1/4 17 230 mm. 508 63.5 323.9 35.1 31.8 431.8 104 in. 12″ 22 2.62 15 20 1.38 1 1/4 19.25 295 mm. 558.8 66.5 381 35.1 31.8 489 134 in. 14″ 23.75 2.75 16.25 20 1.5 1 3/8 20.75 355 mm. 603.3 69.9 412.8 38.1 34.9 527.1 161 in. 16″ 27 3 18.5 20 1.62 1 1/2 23.75 495 mm. 685.8 76.2 469.9 41.1 38.1 603.3 225 in. 18″ 29.25 3.25 21 20 1.75 1 5/8 25.75 630 mm. 743 82.6 533.4 44.5 41.3 654.1 286 in. 20″ 32 3.5 23 24 1.75 1 5/8 28.5 810 mm. 812.8 88.9 584.2 44.5 41.3 723.9 367 in. 24″ 37 4 27.25 24 2 1 7/8 33 1250 mm. 939.8 101.6 692.2 50.8 47.6 838.2 567 forged steel flange dimensions class300
Nominal size Outside diam. of flange Thick. of flange Diam of hub at base Length thru hub Diam. of bore Fillet radius No. of holes Diam. of holes Diam. of bolts Diam. of bolt circle Approx. weight pounds Kg O C X Y B r in. 1/2″ 3.75 0.56 1.5 0.88 0.9 0.12 4 0.62 1/2 2.62 2 mm. 95.3 14.2 38.1 22.4 22.9 3 15.7 12.7 66.5 1 in. 3/4″ 4.62 0.62 1.88 1 1.11 0.12 4 0.75 5/8 3.25 3 mm. 117.3 15.7 47.8 25.4 28.2 3 19.1 15.9 82.6 1 in. 1″ 4.88 0.69 2.12 1.06 1.38 0.12 4 0.75 5/8 3.5 3 mm. 124 17.5 53.8 26.9 35.1 3 19.1 15.9 88.9 1 in. 1 1/4″ 5.25 0.75 2.5 1.06 1.72 0.19 4 0.75 5/8 3.88 4 mm. 133.4 19.1 63.5 26.9 43.7 4.8 19.1 15.9 98.6 2 in. 1 1/2″ 6.12 0.81 2.75 1.19 1.97 0.25 4 0.88 3/4 4.5 6 mm. 155.4 20.6 69.9 30.2 50 6.4 22.4 19.1 114.3 3 in. 2″ 6.5 0.88 3.31 1.31 2.46 0.31 8 0.75 5/8 5 7 mm. 165.1 22.4 84.1 33.3 62.5 7.9 19.1 15.9 127 3 in. 2 1/2″ 7.5 1 3.94 1.5 2.97 0.31 8 0.88 3/4 5.88 10 mm. 190.5 25.4 100.1 38.1 75.4 7.9 22.4 19.1 149.4 5 in. 3″ 8.25 1.12 4.62 1.69 3.6 0.38 8 0.88 3/4 6.62 13 mm. 209.6 28.4 117.3 42.9 91.4 9.7 22.4 19.1 168.1 6 in. 3 1/2″ 9 1.19 5.25 1.75 4.1 0.38 8 0.88 3/4 7.25 17 mm. 228.6 30.2 133.4 44.5 104.1 9.7 22.4 19.1 184.2 8 in. 4″ 10 1.25 5.75 1.88 4.6 0.44 8 0.88 3/4 7.88 22 mm. 254 31.8 146.1 47.8 116.8 11.2 22.4 19.1 200.2 10 in. 5″ 11 1.38 7 2 5.69 0.44 8 0.88 3/4 9.25 28 mm. 279.4 35.1 177.8 50.8 144.5 11.2 22.4 19.1 235 13 in. 6″ 12.5 1.44 8.12 2.06 6.75 0.5 12 0.88 3/4 10.62 39 mm. 317.5 36.6 206.2 52.3 171.5 12.7 22.4 19.1 269.7 18 in. 8″ 15 1.62 10.25 2.44 8.75 0.5 12 1 7/8 13 58 mm. 381 41.1 260.4 62 222.3 12.7 25.4 22.2 330.2 26 in. 10″ 17.5 1.88 12.62 3.75 10.92 0.5 16 1.12 1 15.25 91 mm. 444.5 47.8 320.5 95.3 277.4 12.7 28.4 25.4 387.4 41 in. 12″ 20.5 2 14.75 4 12.92 0.5 16 1.25 1 1/8 17.75 140 mm. 520.7 50.8 374.7 101.6 328.2 12.7 31.8 28.6 450.9 64 in. 14″ 23 2.12 16.75 4.38 14.18 0.5 20 1.25 1 1/8 20.25 190 mm. 584.2 53.8 425.5 111.3 360.2 12.7 31.8 28.6 514.4 86 in. 16″ 25.5 2.25 19 4.75 16.19 0.5 20 1.38 1 1/4 22.5 250 mm. 647.7 57.2 482.6 120.7 411.2 12.7 35.1 31.8 571.5 113 in. 18″ 28 2.38 21 5.12 18.2 0.5 24 1.38 1 1/4 24.75 295 mm. 711.2 60.5 533.4 130 462.3 12.7 35.1 31.8 628.7 134 in. 20″ 30.5 2.5 23.12 5.5 20.25 0.5 24 1.38 1 1/4 27 370 mm. 774.7 63.5 587.2 139.7 514.4 12.7 35.1 31.8 685.8 168 in. 24″ 36 2.75 27.62 6 24.25 0.5 24 1.62 1 1/2 32 550 mm. 914.4 69.9 701.5 152.4 616 12.7 41.1 38.1 812.8 249 
forged steel flange dimensions class600
Nominal size Outside diam. of flange Thick. of flange Diam of hub at base Length thru hub Diam. of bore Fillet radius No. of holes Diam. of holes Diam. of bolts Diam. of bolt circle Approx. weight pounds Kg O C X Y B r in. 1/2″ 3.75 0.56 1.5 0.88 0.9 0.12 4 0.62 1/2 2.62 2 mm. 95.3 14.2 38.1 22.4 22.9 3 15.7 12.7 66.5 1 in. 3/4″ 4.62 0.62 1.88 1 1.11 0.12 4 0.75 5/8 3.25 3 mm. 117.3 15.7 47.8 25.4 28.2 3 19.1 15.9 82.6 1 in. 1″ 4.88 0.69 2.12 1.06 1.38 0.12 4 0.75 5/8 3.5 4 mm. 124 17.5 53.8 26.9 35.1 3 19.1 15.9 88.9 2 in. 1 1/4″ 5.25 0.81 2.5 1.12 1.72 0.19 4 0.75 5/8 3.88 5 mm. 133.4 20.6 63.5 28.4 43.7 4.8 19.1 15.9 98.6 2 in. 1 1/2″ 6.12 0.88 2.75 1.25 1.97 0.25 4 0.88 3/4 4.5 7 mm. 155.4 22.4 69.9 31.8 50 6.4 22.4 19.1 114.3 3 in. 2″ 6.5 1 3.31 1.44 2.46 0.31 8 0.75 5/8 5 9 mm. 165.1 25.4 84.1 36.6 62.5 7.9 19.1 15.9 127 4 in. 2 1/2″ 7.5 1.12 3.94 1.62 2.97 0.31 8 0.88 3/4 5.88 12 mm. 190.5 28.4 100.1 41.1 75.4 7.9 22.4 19.1 149.4 5 in. 3″ 8.25 1.25 4.62 1.81 3.6 0.38 8 0.88 3/4 6.62 15 mm. 209.6 31.8 117.3 46 91.4 9.7 22.4 19.1 168.1 7 in. 3 1/2″ 9 1.38 5.25 1.94 4.1 0.38 8 1 7/8 7.25 20 mm. 228.6 35.1 133.4 49.3 104.1 9.7 25.4 22.2 184.2 9 in. 4″ 10.75 1.5 6 2.12 4.6 0.44 8 1 7/8 8.5 36 mm. 273.1 38.1 152.4 53.8 116.8 11.2 25.4 22.2 215.9 16 in. 5″ 13 1.75 7.44 2.38 5.69 0.44 8 1.12 1 10.5 61 mm. 330.2 44.5 189 60.5 144.5 11.2 28.4 25.4 266.7 28 in. 6″ 14 1.88 8.75 2.62 6.75 0.5 12 1.12 1 11.5 78 mm. 355.6 47.8 222.3 66.5 171.5 12.7 28.4 25.4 292.1 35 in. 8″ 16.5 2.19 10.75 3 8.75 0.5 12 1.25 1 1/8 13.75 110 mm. 419.1 55.6 273.1 76.2 222.3 12.7 31.8 28.6 349.3 50 in. 10″ 20 2.5 13.5 4.38 10.92 0.5 16 1.38 1 1/4 17 170 mm. 508 63.5 342.9 111.3 277.4 12.7 35.1 31.8 431.8 77 in. 12″ 22 2.62 15.75 4.62 12.92 0.5 20 1.38 1 1/4 19.25 200 mm. 558.8 66.5 400.1 117.3 328.2 12.7 35.1 31.8 489 91 in. 14″ 23.75 2.75 17 5 14.18 0.5 20 1.5 1 3/8 20.75 250 mm. 603.3 69.9 431.8 127 360.2 12.7 38.1 34.9 527.1 113 in. 16″ 27 3 19.5 5.5 16.19 0.5 20 1.62 1 1/2 23.75 365 mm. 685.8 76.2 495.3 139.7 411.2 12.7 41.1 38.1 603.3 166 in. 18″ 29.25 3.25 21.5 6 18.2 0.5 20 1.75 1 5/8 25.75 435 mm. 743 82.6 546.1 152.4 462.3 12.7 44.5 41.3 654.1 197 in. 20″ 32 3.5 24 6.5 20.25 0.5 24 1.75 1 5/8 28.5 570 mm. 812.8 88.9 609.6 165.1 514.4 12.7 44.5 41.3 723.9 259 in. 24″ 37 4 28.25 7.25 24.25 0.5 24 2 1 7/8 33 810 mm. 939.8 101.6 717.6 184.2 616 12.7 50.8 47.6 838.2 367
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