| Nominal Diameter (DN) | Nominal Pipe Diameter (NPS/Inch) | Outer Diameter (OD) (MM) | Common Wall Thickness (MM) | Common Pipe Wall Grades (SCH.) | Application Notes |
|---|---|---|---|---|---|
| 15 | ½" | 21.3 | 2.77 / 3.73 | SCH 40 / SCH 80 | Instrumentation, Steam, Process Piping |
| 20 | ¾" | 26.7 | 2.87 / 3.91 | SCH 40 / SCH 80 | —— |
| 25 | 1" | 33.4 | 3.38 / 4.55 | SCH 40 | —— |
| 32 | 1-¼" | 42.2 | 3.56 / 4.85 | SCH 40 / SCH 80 | —— |
| 40 | 1-½" | 48.3 | 3.68 / 5.08 | SCH 40 / SCH 80 | —— |
| 50 | 2" | 60.3 | 3.91 / 5.54 | SCH 40 | —— |
| 65 | 2-½" | 73 | 5.16 / 7.01 | SCH 40 / SCH 80 | —— |
| 80 | 3" | 88.9 | 5.49 / 7.62 | SCH 40 | 8mm Was Once The Mainstream Wall Thickness In China. |
| 100 | 4" | 114.3 | 6.02 / 8.56 | SCH 40 / SCH 80 | —— |
| 125 | 5" | 141.3 | 6.55 / 9.53 | SCH 40 / SCH 80 | —— |
| 150 | 6" | 168.3 | 7.11 / 10.97 | SCH 40 / SCH 80 | 10mm Was Once The Mainstream Wall Thickness In China. |
| 200 | 8" | 219.1 | 8.18 / 12.7 | SCH 40 / SCH 80 | —— |
| 250 | 10" | 273.1 | 9.27 / 15.09 | SCH 40 / SCH 80 | 10mm Is The Mainstream Wall Thickness |
| 300 | 12" | 323.9 | 9.53 / 17.48 | SCH 30 / SCH 40 | —— |
| 350 | 14" | 355.6 | 9.53 / 19.05 | SCH 30 / SCH 40 | —— |
| 400 | 16" | 406.4 | 9.53 / 21.44 | SCH 20 / SCH 30 | —— |
| 450 | 18" | 457 | 9.53 / 23.83 | SCH 20 / SCH 30 | —— |
| 500 | 20" | 508 | 9.53 / 26.19 | SCH 20 / SCH 30 | —— |
| 600 | 24" | 610 | 9.53 / 30.96 | SCH 20 / SCH 30 | —— |
| Nominal Diameter (DN) | Nominal Pipe Diameter (NPS/Inch) | Outer Diameter (OD) (MM) | Common Wall Thickness (MM) | Commonly Used Materials | Key Points For Operating A Pipe Bending Machine |
|---|---|---|---|---|---|
| 15-50 | $1/2" - 2"$ | 21.3 - 60.3 | Sch 40 / Sch 80 | Carbon Steel A106 Gr.B/20# | It Has Good Ductility, Low Elasticity, And Is Easy To Bend. |
| 65-150 | $2-1/2" - 6"$ | 73.0 - 168.3 | Sch 40 / Sch 80 | Stainless Steel 304L/316L | It Has Low Yield Strength, Is Easily Deformed, But Exhibits Significant Work Hardening. |
| 200-600 | $8" - 24"$ | 219.1 - 610.0 | Sch 20 / Sch 40 | Low Alloy Steel A335 P11/P22 | High Temperature And High Pressure Application, High Strength, Requires Heating Or Large Bending Radius |
| General Engineering | Arbitrary | Arbitrary | Sch 40 | Carbon Steel Q235B/Q345B | Structural Steel, With Moderate Strength, Is The Most Commonly Used Material For Bending Pipes. |
| Chemical Food | Arbitrary | Arbitrary | Sch 10S / Sch 40S | Stainless Steel 304/316 | High Surface Finish Is Required Necessitating The Use Of Internal Support Molds To Prevent Wrinkles. |
| Special High Pressure | Arbitrary | Sch 80 And Above | High-Strength Alloy Steel | The Springback Is Extremely Large, And The Amount Of Springback Needs To Be Accurately Predicted Before Bending. | —— |
| Nonferrous Metals | Arbitrary | Arbitrary | Thinner | Copper Pipe/Aluminum Pipe | It Has Low Strength And Is Prone To Collapse, So A Mandrel Must Be Used. |
