DIN 3015 Pipe Clamp Size Finder
Enter your tube or pipe outside diameter (OD) to find the matching DIN 3015 size group in the light, heavy and twin series.
Full OD-to-group reference tables
DIN 3015-1 — Light series (Part 1) (WQL)
| Group | Standard tube ODs covered (mm) | Bolt |
|---|---|---|
| L0 | 6, 6.4, 8, 9.5, 10, 12 | M6×20 |
| L1 | 6, 6.4, 8, 9.5, 10, 12 | M6×20 |
| L2 | 12.7, 13.5, 14, 15, 16, 17.2, 18 | M6×25 |
| L3 | 19, 20, 21.3, 22, 25 | M6×30 |
| L4 | 26.9, 28, 30 | M6×35 |
| L5 | 32, 33.7, 35, 38, 40, 42 | M6×50 |
| L6 | 44.5, 48.3, 50.8 | M6×60 |
| L7 | 57.2, 60.3, 63.5, 70, 73 | M6×90 |
| L8 | 76.1, 88.9, 102 | M6×110 |
DIN 3015-2 — Heavy series (Part 2) (WQH)
| Group | Standard tube ODs covered (mm) |
|---|---|
| H1 | 6, 8, 9.5, 10, 12.7, 13.5, 14, 15, 16, 17.2, 18 |
| H2 | 18, 19, 20, 21.3, 22, 25, 26.9, 28, 30 |
| H3 | 30, 32, 33.7, 35, 38, 40, 42 |
| H4 | 42, 44.5, 48.3, 50.8, 55, 57, 60.3, 63.5, 65, 70, 75 |
| H5 | 75, 80, 82.5, 88.9 |
| H6 | 88.9, 102, 108, 114 |
| H7 | 140, 152, 159, 165, 168, 177.8 |
| H8 | 193.7, 216, 219 |
| H9 | 219, 273 |
| H10 | 356, 406 |
| H11 | 419, 508 |
DIN 3015-3 — Twin series (Part 3) (WQT)
| Group | Standard tube ODs covered (mm) |
|---|---|
| T1 | 6, 6.4, 8, 9.5, 10, 12 |
| T2 | 12.7, 13.5, 14, 15, 16, 17.2, 18 |
| T3 | 19, 20, 21.3, 22, 25 |
| T4 | 26.9, 28, 30 |
| T5 | 32, 33.7, 35, 38, 40, 42 |
How to measure the OD correctly
Always measure the actual outside diameter with a caliper — never rely on nominal pipe size (DN / NPS), which differs from the true OD. For DN and inch conversions, see the guides below.
Frequently asked questions
What if my tube OD is between two standard sizes?
DIN 3015 clamp bores are made for specific standard ODs. Never use an oversized bore — the pipe will fret and wear. Choose the exact OD insert; for non-standard tubing we can machine custom inserts on request.
Should I pick the light or heavy series for the same OD?
Overlapping ODs (about 6–102 mm) can use either series. Choose heavy (Part 2) for high loads, strong vibration or mobile equipment; light (Part 1) for general hydraulic and pneumatic lines.
Are these size groups interchangeable with other DIN 3015 brands?
Yes — size groups, bore ODs and mounting interfaces follow DIN 3015, so WeiQue clamps are dimensionally interchangeable with other DIN 3015 manufacturers. Always confirm bolt grade and body material against your spec.
Found your size group? Get a quote in 24 hours
Send us the OD, size group, quantity and mounting type — our engineers confirm the exact part number and quote within one working day.