American threaded pipe coupling (Merchant coupling) is made by short length steel pipe with both ends female threaded connection, and it is used to join two pipes of same size.
|Size||THK Sch40 (STD) / Sch80(XS)||D (mm)||Length type||Ref. No.|
|1/2″ / DN15 / 21.3mm||2.77 / 3.73||27.0||Full / half||N6401|
|3/4″ / DN20 / 26.7mm||2.87 / 3.91||33.4||Full / half||N6402|
|1″ / DN25 / 33.4mm||3.38 / 4.55||40.0||Full / half||N6403|
|1-1/4″ / DN32 / 42.2mm||3.56 / 4.85||48.3||Full / half||N6404|
|1-1/2″ / DN40 / 48.3mm||3.68 / 5.08||55.9||Full / half||N6405|
|2″ / DN50 / 60.3mm||3.91 / 5.54||69.8||Full / half||N6406|
|2-1/2″ / DN65 / 73.0mm||5.16 / 7.01||82.5||Full / half||N6407|
|3″ / DN80 / 88.9mm||5.49 / 7.62||101.6||Full / half||N6408|
|4″ / DN100 / 114.3mm||6.02 / 8.56||127.0||Full / half||N6409|
|5″ / DN125 / 141.3mm||6.55 / 9.53||159.9||Full / half||N6410|
|6″ / DN150 / 168.3mm||7.11 / 10.97||187.7||Full / half||N6411|
1. For half coupling, the unthreaded end is square cut.
2. For size up to 2″ (DN 50), the coupling is normally supplied with straight tapped NPSC.
3. Other thickness and length is available as customer request.