Tesco Steel & Engineering manufactures DIN 3015 Part 2 Heavy Series pipe and tube clamps — heavy-duty twin-half polymer clamp bodies with reinforced steel weld plates, cover plates, and rails for high-pressure, high-vibration hydraulic pipe support. Size 6 mm to 406 mm OD. Working pressure up to 600 bar (8000 PSI). Polypropylene (PP) / Polyamide / Aluminium body with Carbon Steel or Stainless Steel plates & bolts. ISO 9001:2015 certified. Made in India.
TES-LOK Heavy Series Pipe Clamp
Light Series (Related)
Twin Series (Related)
The heavy series is selected wherever the standard light series cannot provide enough grip force or fatigue resistance — high-pressure pump and press lines, large-diameter pipe, and applications with severe shock and vibration. The polymer body still damps vibration and protects the pipe surface, but the heavier section resists the higher loads without loosening or fretting.
| Criterion | Heavy Series (Part 2) | Light Series (Part 1) | Twin / Double Series (Part 3) |
|---|---|---|---|
| Standard | DIN 3015 Part 2 | DIN 3015 Part 1 | DIN 3015 Part 3 |
| Duty level | Heavy duty — high vibration & load | Standard duty — general runs | Two pipes stacked in one body |
| Body section | Taller, thicker — higher grip force | Lower profile, lighter section | Stacked twin bores |
| OD range | 6 mm to 406 mm | 6 mm to 102 mm | Matched pairs per group |
| Working pressure | 100 bar to 600 bar (1500–8000 PSI) | Up to ~100 bar (1500 PSI) | As per pipe service |
| Typical use | HP hydraulic pipe, large-bore, heavy machinery, severe vibration | Instrument tube, low/medium-vibration pipe | Routing two parallel lines together |
| Component | Function | Material Options |
|---|---|---|
| Clamp Body (two halves) | Heavy-section halves grip the pipe; damp high vibration | Polypropylene (PP), Polyamide, Aluminium |
| Weld Plate (mounting plate) | Reinforced plate welded to the structure to anchor the clamp | Carbon Steel (zinc plated), SS 304, SS 316 |
| Cover Plate (top plate) | Heavy cover bridges the two halves; bolt bears on it | Carbon Steel (zinc plated), SS 304, SS 316 |
| Bottom Plate | Bolt-on alternative to weld plate (no welding needed) | Carbon Steel (zinc plated), SS 304, SS 316 |
| Mounting Rail / Rail Nut | Carries multiple heavy clamps in a row on one rail | Carbon Steel (zinc plated), SS 304, SS 316 |
| Hex Bolt / Stud | Larger bolt clamps the assembly to specified torque | Zinc-plated Grade 8.8, SS 304 (A2), SS 316 (A4) |
| Body Material | Temperature Range | Key Properties | Best For |
|---|---|---|---|
| Polypropylene (PP) | −40°C to +90°C | Good chemical resistance, economical, standard option | General heavy hydraulic pipe runs |
| Polyamide (PA / Nylon) | −40°C to +120°C | Higher temperature & abrasion resistance, very tough | Hot, high-vibration HP circuits |
| PP Electrically Conductive | −40°C to +90°C | Antistatic / conductive grade dissipates charge | ATEX / hazardous areas needing static dissipation |
| Aluminium | −60°C to +200°C | Metal body for high-temperature / fire-zone service | Engine rooms, fire zones, hot large-bore pipe |
| Parameter | Details |
|---|---|
| Brand | TES-LOK (Tesco Steel & Engineering) |
| Series | Heavy Series — DIN 3015 Part 2 |
| Pipe/Tube OD Range | 6 mm to 406 mm OD |
| Working Pressure | 100 bar (1500 PSI) up to 600 bar (8000 PSI) |
| Clamp Body Material | Polypropylene (PP), Polyamide, Aluminium, Conductive PP |
| Hardware Material | Carbon Steel (zinc plated), SS 304 (A2), SS 316 (A4) |
| Mounting Options | Weld plate, bolt-on bottom plate, mounting rail / rail nut |
| Temperature Range | PP: −40°C to +90°C | PA: −40°C to +120°C | Aluminium: up to +200°C |
| Standard | DIN 3015 Part 2 (Heavy Series) |
| Size Groups | Group 1 to Group 6 (heavy) — each group covers a range of ODs with a common plate/rail size |
| Certifications | ISO 9001:2015 | material certificates on request |
Heavy Series clamps are organised into size groups — each group shares a common weld plate, cover plate, and rail dimension, so clamps for different pipe ODs in the same group mount on identical hardware. The heavy series extends to much larger pipe diameters than the light series.
| Group | Pipe/Tube OD Range | Typical Clamp Bolt |
|---|---|---|
| Group 1 (Heavy) | 20, 25, 30 mm | M8 |
| Group 2 (Heavy) | 38, 42, 44.5 mm | M10 |
| Group 3 (Heavy) | 50, 60.3 mm | M10 / M12 |
| Group 4 (Heavy) | 76.1, 88.9 mm | M12 |
| Group 5 (Heavy) | 108, 114.3, 133 mm | M12 / M16 |
| Group 6 (Heavy) | 140 mm up to 406 mm | M16 / M20 |
Clamp body, weld plate, cover plate, and rail dimensions are manufactured to DIN 3015 Part 2 — fully interchangeable with standard heavy-series clamp hardware from any DIN 3015 supplier, simplifying procurement and spares.
The taller, thicker heavy-section body and larger bolts deliver the grip force needed to hold high-pressure hydraulic pipe (to 600 bar) against severe pressure pulsation — preventing pipe walk, loosening, and fatigue failure on press and pump circuits.
The polymer body grips the full pipe circumference, absorbing high vibration instead of point-loading the pipe. This prevents fretting, abrasion, and fatigue cracking on heavy machinery — extending hydraulic line life and reducing structure-borne noise.
The heavy series extends to 406 mm OD — far beyond the light series — supporting large-diameter hydraulic and process pipe that standard-duty clamps cannot carry. Ideal for big-bore pipe racks on heavy plant and marine installations.
Weld plates, cover plates, rails, and bolts in zinc-plated carbon steel for general service, or SS 304 (A2) and SS 316 (A4) for corrosive, marine, and washdown environments. Body grades cover PP, Polyamide, conductive PP, and aluminium.
TES-LOK supplies the complete heavy clamp group — body halves, weld/bottom plate, cover plate, rail, and bolts — as a matched assembly, or as individual components for spares. ISO 9001:2015 certified with material traceability.
Download the full TES-LOK Heavy Series (DIN 3015 Part 2) pipe/tube clamp dimension table — clamp body bore, weld plate, cover plate, rail, and bolt dimensions for each size group:
📄 Heavy Pipe/Tube Clamp Dimensions (PDF)| Industry | Typical Use Point | Why Heavy Series Clamp Preferred |
|---|---|---|
| Industrial Hydraulics | High-pressure pump and press circuit pipe, large-bore manifold pipe | High grip force holds HP pipe to 600 bar against pulsation; large-bore capability |
| Heavy Mobile Equipment | Large excavator, mining shovel, and crane main hydraulic lines | Heavy-section body resists severe shock and vibration; SS hardware for outdoor exposure |
| Steel & Metals | Rolling mill and continuous casting high-pressure hydraulic pipe | Withstands intense cyclic pressure loading on big-bore mill hydraulics |
| Oil & Gas / Offshore | Large-bore process and hydraulic pipe on platforms and skids | SS 316 hardware + conductive body for corrosive, hazardous, high-load areas |
| Marine & Shipbuilding | Engine room large-bore hydraulic and fuel pipe | SS 316 (A4) hardware resists salt corrosion; aluminium body for fire zones |
| Power Generation | HP lube oil and control pipe in turbine halls | Heavy clamp damps vibration on large pipe; reduces structure-borne noise |
| Mining & Quarrying | Crusher, drill, and haul-truck high-pressure hydraulic lines | Robust heavy clamp survives extreme shock and abrasion |
| Cement & Bulk Plants | Large-bore hydraulic and utility pipe on heavy plant structures | Large-diameter support up to 406 mm with vibration damping |
Q1. What is a DIN 3015 Heavy Series pipe clamp?
It is a heavy-duty pipe/tube support clamp built to DIN 3015 Part 2. It uses the same twin-half polymer body + weld plate + cover plate + bolt concept as the light series, but with a taller, thicker body, larger plates, and larger bolts that deliver much higher grip force. It is used for high-pressure hydraulic pipe (up to 600 bar), large-bore pipe (up to 406 mm OD), and high-vibration heavy-machinery applications.
Q2. What is the difference between Heavy Series and Light Series clamps?
Light Series (DIN 3015 Part 1) is standard-duty, with a lower-profile body for general pipe/tube runs up to about 102 mm OD and ~100 bar. Heavy Series (DIN 3015 Part 2) has a taller, thicker body, larger bolts, and higher grip force for high-pressure pipe (to 600 bar), large-bore pipe (to 406 mm OD), and high-vibration applications. Choose Heavy Series when vibration, pressure, or pipe size exceeds standard-duty limits.
Q3. What pressure and pipe size can the Heavy Series handle?
The TES-LOK Heavy Series covers pipe/tube from 6 mm up to 406 mm OD, with working pressures from 100 bar (1500 PSI) up to 600 bar (8000 PSI) depending on the pipe and clamp size. This makes it suitable for the most demanding high-pressure hydraulic and large-bore pipe support applications.
Q4. What clamp body material should I choose for a hot, high-vibration circuit?
Polyamide (PA / nylon) — it handles higher temperatures (+120°C) and greater abrasion and vibration than standard PP. For general service to +90°C, PP is the economical choice. For high-temperature or fire-zone service up to +200°C, use an aluminium body. For ATEX/hazardous areas, specify conductive (antistatic) PP.
Q5. What hardware material should I use for marine or offshore installations?
Use SS 316 (A4) weld plates, cover plates, rails, and bolts for marine, offshore, and coastal outdoor service — SS 316 resists chloride corrosion. SS 304 (A2) suits general outdoor and washdown service. Zinc-plated carbon steel is economical for dry indoor environments. The polymer body is corrosion-resistant; the hardware grade determines corrosion performance.
Q6. How does the heavy clamp protect high-pressure pipe?
The polymer body grips the full circumference of the pipe and acts as a damping interface between the pipe and the rigid structure. On high-pressure lines, pressure pulsation creates intense vibration; the heavy clamp's high grip force holds the pipe firmly while the resilient polymer absorbs the pulsation, preventing pipe walk, fretting wear, fatigue cracking, and noise transmission.
Q7. Can I mount multiple heavy clamps on a single rail?
Yes. The mounting rail option carries a row of heavy clamps along one rail, allowing multiple parallel large-bore or high-pressure pipe lines to be supported on a single welded or bolted rail. This keeps lines organised and reduces the number of individual mounting points on heavy pipe racks.
Q8. Do you supply the complete clamp group or individual components?
Both. TES-LOK supplies the complete heavy clamp group — body halves, weld/bottom plate, cover plate, rail, and bolts — as a matched assembly, or any individual component for spares. We also manufacture the related Light Series, Twin/Double Series, Aluminium, Construction, Multilayer, and Rail-Nut clamp products. See the sidebar for the full range.