Tesco Steel & Engineering manufactures PP twin double-hole tube clamps to DIN 3015 — polypropylene clamp bodies with two side-by-side bores that grip and support two parallel pipes or tubes in a single clamp. Size 1/4" to 2½" (6 mm to 76.1 mm OD), in light-duty and heavy-duty versions. Polypropylene (PP) bodies with Carbon Steel or Stainless Steel plates & bolts. ISO 9001:2015 certified. Made in India.
TES-LOK PP Double-Hole Clamp
Twin / Double Series (Related)
Light Series (Single)
The double-hole design carries two lines — typically a supply-and-return pair or two parallel runs — in one body, halving the clamps, plates, and welds compared with two single clamps. The PP body adds good chemical resistance and economy for ambient-temperature service, covering tube/pipe from 1/4" to 2½" (6 mm to 76.1 mm OD) in both light-duty and heavy-duty versions.
| Criterion | PP Double-Hole Clamp | Two Single Clamps |
|---|---|---|
| Bores (holes) | Two side-by-side in one PP body | One bore each |
| Mounts & welds | One mount / weld for two lines | Two mounts / welds for two lines |
| Space used | Compact — both lines in one footprint | Wider — two separate footprints |
| Line spacing | Fixed, even centre-to-centre spacing built in | Depends on installer placement |
| Installation time | Faster — half the mounting hardware | Slower — double the operations |
| Best use | Two parallel lines (supply + return, paired runs) | Single isolated or widely separated lines |
| Criterion | Light Duty | Heavy Duty |
|---|---|---|
| Body section | Lower-profile PP body | Thicker PP body, higher grip force |
| Working pressure | Up to ~100 bar (1500 PSI) | More than 1500 PSI — higher-pressure pairs |
| Vibration / load | Standard-duty paired runs | Higher-vibration, higher-load paired runs |
| Typical use | Instrument tube & medium-pressure paired lines | Higher-pressure paired hydraulic lines |
| PP Property | Benefit |
|---|---|
| Good chemical resistance | Resists many oils, fuels, dilute acids/alkalis and washdown chemicals — suits chemical and process areas |
| Light weight | Easy to handle and install; low added load on the structure |
| Economical | Cost-effective body material for the large volumes used on pipe racks |
| Vibration damping | Resilient PP grips and cushions both pipes, absorbing vibration and pressure pulsation |
| Corrosion-free body | The polymer body itself never corrodes; only the steel hardware needs corrosion grading |
| Temperature range | −40°C to +90°C — suits the great majority of ambient and moderate-temperature pipe runs |
| Component | Function | Material Options |
|---|---|---|
| Double-Hole Body (two halves) | Two-bore PP halves grip two pipes at once; damp vibration | Polypropylene (PP) | Polyamide / Aluminium on request |
| Weld Plate (mounting plate) | Welded to the structure to anchor the clamp | Carbon Steel (zinc plated), SS 304, SS 316 |
| Cover Plate (top plate) | 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 double-hole clamps in a row on one rail | Carbon Steel (zinc plated), SS 304, SS 316 |
| Hex Bolt / Stud | Clamps the assembly together to specified torque | Zinc-plated Grade 8.8, SS 304 (A2), SS 316 (A4) |
| Parameter | Details |
|---|---|
| Brand | TES-LOK (Tesco Steel & Engineering) |
| Type | PP twin double-hole (two-bore) clamp — DIN 3015 Part 1 platform |
| Configuration | Two side-by-side bores — holds two parallel pipes/tubes in one clamp |
| Pipe/Tube OD Range | 1/4" to 2½" (6 mm to 76.1 mm OD) |
| Duty / Working Pressure | Light duty: up to 100 bar (1500 PSI) | Heavy duty: more than 1500 PSI |
| Clamp Body Material | Polypropylene (PP) standard; Polyamide / Aluminium on request |
| 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 |
| Standard | DIN 3015 Part 1 (double-hole / twin) |
| Certifications | ISO 9001:2015 | material certificates on request |
The double-hole PP body holds two parallel pipes on one mount — halving the clamps, plates, and welds versus two single clamps. This saves installation labour, hardware cost, and structural space on paired-line runs.
The two bores are set at a fixed, even centre-to-centre spacing, so supply and return lines stay perfectly parallel and equally spaced along the whole run — neater than two independently positioned single clamps.
Polypropylene resists many oils, fuels, dilute acids/alkalis, and washdown chemicals, and never corrodes — ideal for chemical, process, and washdown areas where the body must shrug off aggressive media.
Available in light-duty (to ~100 bar) and heavy-duty (above 1500 PSI) versions, so the same double-hole concept covers both standard paired runs and higher-pressure paired hydraulic lines, up to 76.1 mm OD.
Double-hole clamps mount on the same DIN 3015 weld plates, bottom plates, and rails as single-bore clamps — so double-hole and single clamps can share a common mounting system and rail on the same rack.
TES-LOK supplies the complete PP double-hole clamp group — double-hole body halves, weld/bottom plate, cover plate, rail, and bolts — as a matched assembly, or as individual components for spares. ISO 9001:2015 certified.
| Industry | Typical Use Point | Why PP Double-Hole Clamp Preferred |
|---|---|---|
| Hydraulics & Machinery | Supply + return hydraulic line pairs on power packs and machines | Holds both lines in one PP clamp; halves mounting hardware and welds |
| Chemical & Process Plants | Paired chemical and utility lines in washdown / corrosive areas | PP body resists chemicals and never corrodes; carries paired lines compactly |
| Water & Wastewater | Paired dosing, sampling, and utility tube lines | Corrosion-free PP body suits wet, chemical-dosing environments |
| Mobile & Construction Equipment | Paired hydraulic lines along chassis and booms | Compact, light PP body; keeps paired lines aligned under vibration |
| Food & Beverage | Paired utility and CIP tube lines in washdown areas | Cleanable, corrosion-free PP body; SS 316 hardware for hygiene zones |
| Machine Tools | Coolant and hydraulic line pairs on CNC and forming machines | Compact double-hole support in confined machine enclosures |
| Oil & Gas / Petrochemical | Instrument tube pairs on skids and panels | Neat paired routing; SS 316 hardware for corrosive areas |
| Material Handling | Paired hydraulic/pneumatic lines on lifts and conveyors | Keeps supply/return pairs neatly bundled and supported |
Q1. What is a PP twin double-hole tube clamp?
It is a DIN 3015 pipe/tube clamp with a polypropylene (PP) body containing two side-by-side bores, so it holds two parallel pipes or tubes in one clamp assembly. Instead of two separate single clamps, the double-hole clamp grips both lines at once on one mount — saving space, hardware, and installation time while keeping the two lines neatly aligned.
Q2. What is the difference between the PP double-hole clamp and the twin (double) series clamp?
Both hold two pipes in one body. This PP double-hole clamp is the polypropylene "double-hole" version, offered in light- and heavy-duty PP bodies across 6–76.1 mm OD. The twin / double series page covers the broader DIN 3015 Part 3 twin clamp available in PP, Polyamide, and aluminium bodies. If you specifically need the PP double-hole body, this is the right product; for other body materials or the standard twin range, see the Twin Series page.
Q3. What pipe sizes does the PP double-hole clamp cover?
It covers pipe/tube from 1/4" to 2½" — that is, 6 mm to 76.1 mm OD. This spans small instrument tube up to medium-bore pipe, in both light-duty and heavy-duty versions for different pressures.
Q4. What is the difference between light-duty and heavy-duty versions?
The light-duty double-hole clamp has a lower-profile PP body for working pressures up to about 100 bar (1500 PSI). The heavy-duty version has a thicker PP body with higher grip force for pressures above 1500 PSI and higher-vibration paired runs. Choose heavy duty when the paired lines run at higher pressure or experience greater vibration.
Q5. Why choose a polypropylene (PP) body?
PP offers good chemical resistance (oils, fuels, dilute acids/alkalis, washdown chemicals), is light and economical, damps vibration, and never corrodes. It suits the great majority of ambient and moderate-temperature pipe runs (−40°C to +90°C). For higher temperatures use polyamide (+120°C) or aluminium (+200°C); for fire zones use aluminium.
Q6. Can the double-hole clamp hold two different pipe sizes?
Standard double-hole bodies have two equal bores for a matched pair of pipes. Mixed-bore double-hole bodies (two different ODs in one clamp) can be supplied for specific paired-line requirements — specify both ODs when ordering. For two lines of very different sizes, two single clamps or a multilayer clamp may suit better.
Q7. What hardware material should I use for washdown or corrosive areas?
Use SS 316 (A4) weld plates, cover plates, rails, and bolts for marine, food-hygiene washdown, and corrosive service — SS 316 resists chloride corrosion. SS 304 (A2) suits general washdown and outdoor service. Zinc-plated carbon steel is economical for dry indoor environments. The PP body itself is already corrosion-free; the hardware grade determines overall corrosion performance.
Q8. Do you supply the complete clamp group or individual components?
Both. TES-LOK supplies the complete PP double-hole clamp group — double-hole 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, Heavy Series, Twin/Double Series, Aluminium, Construction, Multilayer, and Rail-Nut clamp products. See the sidebar for the full range.