A DIN 3015 pipe clamp is a two-shell clamp, built to a German engineering standard, that grips a single pipe, tube or hose and holds it firmly to a structure — absorbing vibration, allowing thermal movement, and protecting the line from chafe and fatigue. It is the most widely specified pipe-fixing standard in hydraulics, mobile machinery and wind-turbine nacelles.
A DIN 3015 pipe clamp is a two-shell clamp made to the German DIN 3015 standard that secures a single pipe, tube or hose against vibration, thermal movement and mechanical load. It consists of two polymer clamp halves (inserts), a weld plate or rail nut, and one or two cover-plate bolts. The standard has three parts: Part 1 (Standard / single-bolt light series), Part 2 (Heavy / double-bolt heavy series) and Part 3 (insert and accessory elements). In wind turbines it holds hydraulic, cooling, lube-oil and pneumatic lines in the nacelle, hub and tower.
- Best for
- Securing pipe, tube and hose lines of 6–76.1 mm OD against vibration in machinery, hydraulics and wind-turbine nacelles
- Not suitable for
- Large-bore pipe above 76.1 mm OD or load-bearing structural pipe supports — use dedicated support standards there
- Selection steps
- 1 — Measure pipe OD → 2 — Choose Part 1 or Part 2 by pressure and vibration → 3 — Select body material → 4 — Select insert compound for the fluid → 5 — Specify coating and certification
- RFQ information
- Pipe OD, series (Part 1 or 2), body material, insert compound, coating, certification level, quantity per size
§ 01 — Definition
DIN 3015 is the German standard (Deutsches Institut für Normung) for pipe clamps used to fix single lines. A clamp made to this standard clamps around the outside diameter (OD) of one pipe or tube and bolts down to a mounting surface — a weld plate, a rail, or a bracket. The clamp does not carry the pipe's process load; its job is to restrain the line against vibration, thermal expansion, pressure pulsation and mechanical shock.
Because the standard fixes the body geometry, bolt sizes and OD steps, a DIN 3015 clamp from one supplier is dimensionally interchangeable with another — which is why it dominates hydraulic and machinery design across Europe and in wind-turbine supply chains.
§ 02 — Components
A complete DIN 3015 clamp assembly has four functional parts:
| Component | Function | Typical material |
|---|---|---|
| Clamp body (2 halves) | Two shells that close around the pipe OD; the elastic insert that grips the line and damps vibration | PA66-GF (polyamide), PP, or aluminium |
| Cover plate | Top plate that holds the two halves together and takes the bolt | Steel, galvanized or stainless |
| Bolt(s) | One bolt (Part 1) or two bolts (Part 2) that clamp the assembly closed | Grade 8.8/A2/A4 hex bolt |
| Weld plate / rail nut | Base that fixes the clamp to the structure — welded, bolted, or rail-mounted | Steel, galvanized or stainless |
§ 03 — The Three Parts of DIN 3015
The standard is published in three parts. People often say "DIN 3015" without saying which part — but the part determines the duty rating.
| Part | Name | Bolts | Duty | Typical use |
|---|---|---|---|---|
| Part 1 | Standard series (Reihe leicht) | 1 bolt | Light — lower pressure, lower vibration | Pneumatic, instrumentation, low-pressure cooling |
| Part 2 | Heavy series (Reihe schwer) | 2 bolts | Heavy — high pressure, high vibration | High-pressure hydraulics, pitch/yaw, nacelle |
| Part 3 | Insert & accessory elements | — | Defines insert compounds, cover plates, rails | Specifying the insert and mounting parts |
For a full Part 1 vs Part 2 decision and dimensions, see the DIN 3015 series selection matrix and the dimension reference tables.
§ 04 — Materials
A DIN 3015 clamp is specified across three material axes — body (insert), metal parts, and coating:
- Insert body: PA66-GF (glass-filled polyamide, the default), PP (chemical resistance), or aluminium (high temperature). See body material comparison.
- Insert compound (for elastomer-lined types): NBR for mineral/hydraulic oil, EPDM for glycol/water coolant, HNBR for high-temperature mixed zones.
- Metal parts & coating: carbon steel with hot-dip galvanizing or zinc-flake onshore; stainless 304/316L for coastal and offshore (C5/CX) environments.
§ 05 — Where It Is Used in a Wind Turbine
Inside a turbine, DIN 3015 clamps fix every fluid line that is not a structural pipe:
| Zone | Lines clamped | Typical insert |
|---|---|---|
| Nacelle | Hydraulic pitch/yaw, gearbox lube oil, cooling glycol | NBR / EPDM |
| Hub | Pitch hydraulic lines (rotating, high vibration) | NBR / HNBR |
| Tower | Cooling risers, cable conduit, pneumatic lines | EPDM / PA |
Each zone has its own vibration and temperature profile — the 200 Hz nacelle vibration problem and the hub/pitch zone guide cover the demanding cases.
§ 06 — Why the Standard Matters
Specifying "a pipe clamp" leaves the supplier guessing. Specifying "DIN 3015-2, OD 25 mm, SS 316L, EPDM insert" gives a dimensionally exact, interchangeable, certifiable part. The standard is what lets a procurement engineer compare quotes on equal terms and lets a maintenance team replace a clamp years later without a drawing.
Need to specify DIN 3015 clamps for a turbine project? Send your pipe OD list and circuit details — we return a dimensionally verified quote with sample availability within one business day.
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