§ 01
§ 01 — Series (Part 1 vs Part 2)
§ 02
§ 02 — OD range
§ 03
§ 03 — Body material
§ 04
§ 04 — Surface coating
§ 05
§ 05 — Insert compound
§ 06
§ 06 — Application matrix
§ 07
§ 07 — How to specify
DIN 3015 pipe clamps are available in two series, three body materials, four coating classes and five insert compounds. This reference page lays out the complete option matrix — which combinations are standard catalogue stock, which require a production lead time, and which are unavailable — so you can compose a complete specification before sending an RFQ.
§ 01 — Series: Part 1 vs Part 2
| Parameter | Part 1 (Light Duty) | Part 2 (Heavy Duty) |
|---|---|---|
| Bolt count | 1 bolt | 2 bolts |
| Bolt size (typical) | M8 – M12 | M10 – M16 |
| Body width | Narrower | Wider (higher clamping force) |
| Vibration resistance | Medium | High — preferred for nacelle |
| Max line pressure (guidance) | Up to 250 bar (hydraulic) | Up to 400 bar (hydraulic) |
| Typical bore range (OD) | 6 – 76.1 mm | 10 – 76.1 mm |
| Wind turbine use case | Pneumatic, low-pressure cooling | High-pressure hydraulic, pitch/yaw |
| Available as stock | Stock | Stock |
Rule of thumb: Use Part 2 for any hydraulic line above 200 bar or any circuit subject to 200 Hz nacelle vibration. Use Part 1 for low-pressure pneumatic and instrumentation lines where space is constrained.
§ 02 — OD / Bore Range
| OD (mm) | Part 1 | Part 2 | Wind turbine circuit |
|---|---|---|---|
| 6 | Std | — | Instrumentation, pilot |
| 8 | Std | — | Instrumentation |
| 10 | Std | Std | Hydraulic control |
| 12 | Std | Std | Hydraulic control |
| 14 | Std | Std | Hydraulic return |
| 15 | Std | Std | Cooling circuit (glycol) |
| 16 | Std | Std | Hydraulic supply |
| 18 | Std | Std | Hydraulic supply |
| 20 | Std | Std | Cooling, hydraulic |
| 22 | Std | Std | Cooling circuit |
| 25 | Std | Std | Cooling main circuit |
| 28 | Std | Std | Cooling main circuit |
| 30 | Std | Std | Hydraulic main, cooling |
| 32 | Std | Std | Hydraulic main |
| 35 | Std | Std | Cooling main |
| 38 | Std | Std | Cooling main |
| 42 | Std | Std | Cooling header |
| 44.5 | Std | Std | Cooling header |
| 48 | Std | Std | Cooling header |
| 51 | Std | Std | Cooling header |
| 54 | Std | Std | Cooling header |
| 60.3 | Std | Std | Cooling header / pneumatic |
| 63.5 | Std | Std | Pneumatic main |
| 70 | Std | MOQ | Pneumatic main |
| 76.1 | Std | MOQ | Pneumatic main |
| > 76.1 | Custom | Custom | Non-standard — confirm lead time |
§ 03 — Body Material
● Stock / standard lead time
○ Available — extended lead time or MOQ
— Not available in this combination
| Body material | Standard | Corrosion resistance | Typical application | EN 10204 3.1 MTC |
|---|---|---|---|---|
| Carbon steel (S235/S355) | Stock | Low (coating dependent) | Onshore nacelle, tower | Available |
| Stainless steel 304 (1.4301) | Lead time | Medium — C3/C4 environments | Onshore coastal, hub interior | Available |
| Stainless steel 316L (1.4404) | Lead time | High — C5/CX offshore | Offshore nacelle and tower | Available |
§ 04 — Surface Coating
| Coating class | Carbon steel | SS 304 | SS 316L | ISO 9227 salt spray | Typical use |
|---|---|---|---|---|---|
| Hot-dip galvanizing (HDG) ISO 1461 | Stock | — | — | ≥ 480 h | Standard onshore |
| Zinc-flake (Geomet / Dacromet) | Stock | — | — | ≥ 720 h | High-vibration nacelle |
| Electroless nickel | Lead time | Lead time | — | ≥ 240 h | Hydraulic precision bore |
| Passivation only | — | Std | Std | Per base material | Offshore / stainless standard |
Offshore rule: SS 316L + passivation is the standard specification for IEC 61400-3 offshore projects. HDG is not recommended above C4 corrosion category — the zinc layer provides insufficient protection once breached in splash-zone environments.
§ 05 — Insert Compound
| Insert | Fluid compatibility | Temp range | Shore A hardness | Standard stock | Wind turbine circuit |
|---|---|---|---|---|---|
| NBR (Nitrile) | Hydraulic mineral oil, gearbox oil | −40 °C to +120 °C | 60–70 Shore A | Yes | Gearbox hydraulic, pitch/yaw |
| EPDM | Glycol/water, DI water, transformer oil | −40 °C to +130 °C | 55–65 Shore A | Yes | Cooling circuit (glycol) |
| HNBR (Hydrogenated Nitrile) | Hydraulic oil + glycol mixed zones | −40 °C to +150 °C | 70–80 Shore A | Lead time | High-temp hydraulic, mixed zones |
| PA (Polyamide) | Dry lines, pneumatic | −30 °C to +100 °C | Hard (non-elastomeric) | Lead time | Pneumatic air lines |
| No insert (bare metal) | Non-vibration static supports | — | — | On request | Structural support only |
Critical: Never substitute NBR for EPDM on glycol cooling circuits. NBR swells and degrades on contact with ethylene glycol/water or propylene glycol/water mixtures — one of the most common re-clamping errors on wind turbine cooling systems.
§ 06 — Application Matrix
| Circuit | Series | Body | Coating | Insert | Cert level |
|---|---|---|---|---|---|
| Onshore wind turbine — standard | |||||
| Hydraulic (pitch/yaw) > 200 bar | Part 2 | Carbon steel | HDG or zinc-flake | NBR | MTC 2.2 |
| Hydraulic return / low-pressure | Part 1 or 2 | Carbon steel | HDG | NBR | MTC 2.2 |
| Gearbox lube oil | Part 1 or 2 | Carbon steel | HDG or zinc-flake | NBR | MTC 2.2 |
| Cooling circuit (glycol/water) | Part 1 or 2 | Carbon steel | HDG | EPDM | MTC 2.2 |
| Pneumatic (nacelle / hub) | Part 1 | Carbon steel | HDG | PA or NBR | MTC 2.2 |
| Offshore wind turbine — C5/CX | |||||
| Hydraulic (pitch/yaw) > 200 bar | Part 2 | SS 316L | Passivation | HNBR | MTC 3.1 |
| Cooling circuit (glycol/water) | Part 1 or 2 | SS 316L | Passivation | EPDM | MTC 3.1 |
| Transformer oil circuit | Part 1 or 2 | SS 316L | Passivation | EPDM | MTC 3.1 |
| Pneumatic | Part 1 | SS 316L | Passivation | PA | MTC 3.1 |
| Coastal / C4 environment | |||||
| All hydraulic circuits | Part 2 | SS 304 or CS zinc-flake | Passivation / zinc-flake | NBR or HNBR | MTC 3.1 recommended |
| All cooling circuits | Part 1 or 2 | SS 304 | Passivation | EPDM | MTC 3.1 recommended |
§ 07 — How to Specify: RFQ Checklist
A complete DIN 3015 clamp specification contains six fields. Omit any one and you will receive non-comparable quotes.
- Series: Part 1 (single bolt) or Part 2 (double bolt)
- Bore OD: Measured outer diameter of the pipe in mm — not DN, not NPS
- Body material: Carbon steel S235/S355 / SS 304 / SS 316L
- Coating: HDG ISO 1461 / zinc-flake (Geomet / Dacromet) / electroless nickel / passivation
- Insert compound: NBR / EPDM / HNBR / PA / none
- Certification level: None / MTC 2.2 / MTC EN 10204 3.1 / CE declaration / RoHS
Example specification: DIN 3015-2 · OD 25 mm · SS 316L body · passivation · EPDM insert · EN 10204 3.1 MTC + CE declaration · Qty 500 pcs · FOB Yancheng
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