Pipes inch conversion size in millimeters. The wall of the Sch.
To buy pipe in a wide range of brands and profiles offers the company AVEK global. Supplier guaranteed prompt delivery of our products to any point specified by the user.
General provisions
Size Do in the pipes of the North American or British production is indicated in inches. The difficulty lies in the fact that the standards for the pipe in these countries is not quite the same, this applies to both the thread pitch and number of turns/threads per millimeter or inch.
Within each standard there is a difference in the sets of standard steps for the type of thread -fastening, small, very small, between the pipe threads, small pipe threads, thread repair inserts, thread Helicoil for inserts, etc.
For the most common types of pipe diameters DN you can use the data table:
| inches | mm | inches | mm | inches | mm | inches | mm | inches | mm |
| - | - | 1 | 25,4 | 2 | 50,8 | 3 | 76,2 | 4 | 101,6 |
| 1/8 | 3,2 | 1 1/8 | 28,6 | 2 1/8 | 54,0 | 3 1/8 | 79,4 | 4 1/8 | 104,8 |
| ¼ | 6,4 | 1 ¼ | 31,8 | 2 ¼ | 57,2 | 3 ¼ | 82,6 | 4 ¼ | 108,8 |
| 3/8 | 9,5 | 1 3/8 | 34,9 | 2 3/8 | 60,3 | 3 3/8 | 85,7 | 4 3/8 | 111,1 |
| ½ | 12,7 | 1 ½ | 38,1 | 2 ½ | 63,5 | 3 ½ | 88,9 | 4 ½ | 114,3 |
| 5/8 | 15,9 | 1 5/8 | 41,3 | 2 5/8 | 66,7 | 3 5/8 | 92,1 | 4 5/8 | 117,5 |
| ¾ | 19,0 | 1 ¾ | 44,4 | 2 ¾ | 69,8 | 3 ¾ | 95,2 | 4 ¾ | 120,6 |
| 7/8 | 22,2 | 1 7/8 | 47,6 | 2 7/8 | 73,0 | 3 7/8 | 98,4 | 4 7/8 | 123,8 |
Buy pipe imported production offers the company AVEK global. Supplier of guaranteed immediate delivery of products to any destination set by the customer.
Translation table of size DN of the metric sizes to inch and back taking into account commonly used foreign standards:
| Outer diameter of connected pipes | Nominal threads SAE | Nominal thread UNF | Outer thread diameter, mm | The average thread diameter, mm | Thread pitch | ||
| mm | inch | mm | threads/inch | ||||
| 6 | ¼″" | ¼″" | 7/16""-20 | 11,079 | 9,738 | 1,27 | 20 |
| 8 | 5/16″" | 5/16″" | 5/8""-18 | 15,839 | 14,348 | 1,411 | 18 |
| 10 | 3/8″" | 3/8″" | 5/8""-18 | 15,839 | 14,348 | 1,411 | 18 |
| 12 | ½″" | ½″" | ¾""-16 | 19,012 | 17,33 | 1,588 | 16 |
| 16 | 5/8″" | 5/8″" | 7/8""-14 | 22,184 | 20,262 | 1,814 | 14 |
| 18 | ¾″" | ¾″" | 1""-14 | 25,357 | 23,437 | 1,814 | 14 |
| 18 | ¾″" | --- | 1""1/16−14 | 26,947 | 25,024 | 1,814 | 14 |
| 20 | 7/8″" | --- | 1""1/8−12 | 28,529 | 26,284 | 2,117 | 12 |
| 22 | 7/8″" | 7/8″" | 1""¼−12 | 31,704 | 29,459 | 2,117 | 12 |
| 22 | 7/8″" | --- | 1""3/8−12 | 34,877 | 32,634 | 2,117 | 12 |
| 25 | 1″" | 1″" | 1""½−12 | 38,052 | 35,809 | 2,117 | 12 |
The company AVEK global offers to buy pipes in a wide range of brands and profiles, domestic and foreign production. Supplier guaranteed timely delivery of products to the address specified by the customer.