American threaded flange

Category Pipe flange and accessories

Certificate: ISO
Standard: ASME B16.5, GB/T 9124.2
Material: Forged carbon steel ASTM A105,
Forged SS ASTM A182, F304 / F316L
Flange facing: RF
Thread: NPT thread as ASME B1.20.1
W. pressure: Class 150 / 300
Surface: Oiled / hot dip galvanized,
Pickling white / No.2B matte finish

Product Details

American threaded flange is similar to slip on flange except the bore is machined to thread, which is attached to external threads of the pipe for connection. The flange is often used for small size high pressure pipeline.

Available size (Class 150)

Size	Flange OD O (mm)	Bolting (No. x hole)	Ref. No.
1/2″ / DN15 / 21.3mm	90	4 x 5/8″	N6401
3/4″ / DN20 / 26.7mm	100	4 x 5/8″	N6402
1″ / DN25 / 33.4mm	110	4 x 5/8″	N6403
1-1/4″ / DN32 / 42.2mm	115	4 x 5/8″	N6404
1-1/2″ / DN40 / 48.3mm	125	4 x 5/8″	N6405
2″ / DN50 / 60.3mm	150	4 x 3/4″	N6406
2-1/2″ / DN65 / 73.0mm	180	4 x 3/4″	N6407
3″ / DN80 / 88.9mm	190	4 x 3/4″	N6408
4″ / DN100 / 114.3mm	230	8 x 3/4″	N6409
5″ / DN125 / 141.3mm	255	8 x 7/8″	N6410
6″ / DN150 / 168.3mm	280	8 x 7/8″	N6411
8″ / DN200 / 219.1mm	345	8 x 7/8″	N6412
10″ / DN250 / 273.0mm	405	12 x 1″	N6413
12″ / DN300 / 323.8mm	485	12 x 1″	N6414
14″ / DN350 / 355.6mm	535	12 x 1-1/8″	N6415
16″ / DN400 / 406.4mm	595	16 x 1-1/8″	N6416
18″ / DN450 / 457.0mm	635	16 x 1-1/4″	N6417
20″ / DN200 / 508.0mm	700	20 x 1-1/4″	N6418
24″ / DN600 / 610.0mm	815	20 x 1-3/8″	N6419

Available size (Class 300)

Size	Flange OD O (mm)	Bolting (No. x hole)	Ref. No.
1/2″ / DN15 / 21.3mm	95	4 x 5/8″	N6421
3/4″ / DN20 / 26.7mm	115	4 x 3/4″	N6422
1″ / DN25 / 33.4mm	125	4 x 3/4″	N6423
1-1/4″ / DN32 / 42.2mm	135	4 x 3/4″	N6424
1-1/2″ / DN40 / 48.3mm	155	4 x 7/8″	N6425
2″ / DN50 / 60.3mm	165	8 x 3/4″	N6426
2-1/2″ / DN65 / 73.0mm	190	8 x 7/8″	N6427
3″ / DN80 / 88.9mm	210	8 x 7/8″	N6428
4″ / DN100 / 114.3mm	255	8 x 7/8″	N6429
5″ / DN125 / 141.3mm	280	8 x 7/8″	N6430
6″ / DN150 / 168.3mm	320	12 x 7/8″	N6431
8″ / DN200 / 219.1mm	380	12 x 1″	N6432
10″ / DN250 / 273.0mm	445	16 x 1-1/8″	N6433
12″ / DN300 / 323.8mm	520	16 x 1-1/4″	N6434
14″ / DN350 / 355.6mm	585	20 x 1-1/4″	N6435
16″ / DN400 / 406.4mm	650	20 x 1-3/8″	N6436
18″ / DN450 / 457.0mm	710	24 x 1-3/8″	N6437
20″ / DN200 / 508.0mm	775	24 x 1-3/8″	N6438
24″ / DN600 / 610.0mm	915	24 x 1-5/8″	N6439