Pinhole Repair Clamps

Pinhole Repair Clamps by Half Pipe Sleeve are purpose-built solutions for sealing small, pressurized pipeline leaks, specifically pinholes up to 12 mm in diameter – without shutting down flow or cutting the line. Whether you’re handling corrosion damage, mechanical punctures, or localized pipe failure, these clamps offer a fast, high-integrity repair option trusted across the globe.

Featuring a rugged steel body, a tapered elastomer sealing cone, and an internal 360° gasket, each clamp is designed to plug the leak directly while distributing sealing force evenly around the pipe circumference. Installation is simple, safe, and tool-friendly — even underwater or in confined field conditions.

From oil & gas and petrochemicals to waterworks and power generation, Half Pipe Sleeve’s Pinhole Repair Clamps are the go-to choice for critical, in-service leak repairs.

When a pinhole leak appears, it often comes without warning. A small jet of water, oil, or gas escaping from a pipe might look harmless at first, but in reality, it can cause downtime, safety hazards, and unexpected costs if not addressed quickly. That’s why maintenance teams across industries rely on Pinhole Repair Clamps as their first line of defense.

These clamps are not just tools — they’re a practical insurance policy against unplanned shutdowns. By allowing quick, on-site repairs without cutting or welding, they give operators a way to keep their systems running while avoiding expensive emergency replacements.

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Why Speed Matters in Leak Repair

Every minute a pipeline is down translates to lost productivity, whether it’s in an oil refinery, a water treatment plant, or an offshore rig. Traditional methods like welding demand skilled technicians, hot-work permits, and line depressurization. In contrast, a pinhole clamp can be applied in minutes with a simple wrench. That speed can make the difference between a minor repair and a major operational setback.

Designed for Real-World Conditions

What sets these clamps apart is their ability to perform in real-world conditions — not just in controlled environments. They can be used:

Under pressure – Repairs don’t require shutting down the line.
In hard-to-reach areas – Their hinged or split designs make them practical in tight or overhead spaces.
Underwater – Divers can install them in subsea pipelines with minimal equipment.
Across materials – From steel and copper to PVC and HDPE, the clamps adapt to different pipelines.

In industries where every pipeline is unique, this adaptability makes pinhole repair clamps a universally valuable tool.

Extending the Life of Ageing Pipelines

Many facilities around the world operate with ageing infrastructure. Corrosion, vibration, and years of use can slowly weaken pipes. Pinhole leaks are often the first visible sign of wear. Installing a repair clamp doesn’t just fix the immediate leak — it helps extend the life of the entire pipeline section, buying valuable time before a full replacement is required.

For operators managing older systems, this makes pinhole repair clamps a smart investment in both safety and sustainability.

Safety and Cost Advantages

Leaks can create hazardous working conditions, from slippery floors in water treatment plants to dangerous sprays of chemicals in industrial sites. By sealing the leak quickly, clamps help safeguard workers and prevent accidents.

From a financial perspective, they also deliver measurable savings:

No hot-work permits or shutdown costs.
Reduced product loss, since leaks are stopped immediately.
Lower labor expenses, as in-house teams can often perform the repair.

For many operators, a single avoided shutdown more than justifies the investment in keeping these clamps stocked and ready.

Built for Reliability

Behind their simple installation lies robust engineering. The clamp body is manufactured from strong carbon steel or stainless steel, protected with anti-corrosion coatings. The sealing cone and gasket materials can be selected based on service needs — nitrile rubber for oil and water, Viton® for high-temperature hydrocarbons, or silicone for specialized applications.

This combination ensures that the clamp not only stops the leak today but continues to perform in demanding environments for months or even years.

A Practical Addition to Every Toolkit

For engineers and maintenance crews, Pinhole Repair Clamps are one of those tools you hope you never need — but when the moment comes, you’re glad to have them. Compact, versatile, and effective, they can turn an emergency situation into a manageable repair.

Whether you’re operating an offshore platform, a chemical plant, or a city water network, having these clamps on hand means being prepared for the unexpected.

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Key Features & Benefits of Pinhole Repair Clamp

Instant Leak Sealing

A central compression screw and elastomer cone expand into the pinhole to seal it precisely. No welding, cutting, or pipe wall deformation required.

On-Line Installation

Install clamps on pressurized lines without draining, depressurizing, or interrupting flow — saving both time and operating costs.

High Pressure Rating

Withstands up to 150 Bar (2200 psi) when properly torqued. Suitable for everything from 2” utility lines to large transmission pipelines.

Corrosion-Resistant Construction

Made from ASTM A516 Gr. 70 carbon steel or 304/316 stainless steel, and finished with protective coatings like Xylan®, epoxy, or hot-dip galvanizing for durability in harsh environments.

360° Gasket Seal

The inner rubber gasket (NBR, Viton®, or Silicone) creates a full circumferential seal around the leak site — even on aged or uneven surfaces.

Minimal Pipe Preparation

Just basic cleaning is needed. No profiling or skilled technicians — even a single field worker can install the clamp using standard tools.

Material & Chemical Composition

Component	Material Specification	Chemical Composition / Properties
Clamp Body	ASTM A516 Gr.70 Carbon Steel	– Carbon (C): ≤ 0.27% – Manganese (Mn): 0.79–1.30% – Phosphorus (P): ≤ 0.035% – Sulfur (S): ≤ 0.035% – Yield Strength: ≥260 MPa – Tensile Strength: 485–620 MPa – Elongation: ≥21%
	Optional: SS 304 / SS 316	Excellent corrosion resistance; ideal for marine or chemical environments
Bolts & Nuts	ASTM A193 B7 / A194 2H	– Tensile Strength: ≥860 MPa – Yield Strength: ≥720 MPa – Coated: Zinc, PTFE, or Xylan® for anti-galling and corrosion protection
Sealing Cone (Plug)	Nitrile Rubber (NBR)	– Temp Range: -20°C to +100°C – Resistant to oil, water, and fuels
	Optional: Viton® (FKM)	– Temp Range: -20°C to +300°C – Ideal for hydrocarbons and aggressive chemicals
	Optional: Silicone Rubber	– Temp Range: -50°C to +200°C – Used in food-grade and extreme cold environments
Inner Gasket Liner	NBR / Viton® / Silicone (matches cone)	Reinforced with optional SS inserts; creates leak-tight seal even with pipe pitting
Coating (Clamp Body)	Epoxy / Xylan® / Hot-Dip Galvanized	Long-lasting protection from corrosion, chemicals, and weather exposure

Pipe Sizes: 2” to 48” outer diameter (OD)
Leak Coverage: Up to 12 mm (0.5 inch) pinhole size
Pressure Rating: Up to 150 Bar (15 MPa)
Temperature Range: -50°C to +300°C (depending on seal material)
Installation Time: Typically 10–15 minutes
Weight Range: ~1 kg (for 2”) to ~8+ kg (for 36”)

Clean the pipe surface around the leak
Place the clamp over the leak using guide pin
Insert and torque the sealing cone screw
Tighten bolts evenly in criss-cross pattern
Inspect for leaks and confirm a pressure-tight seal

No heavy equipment, hot work, or flow isolation required.

Oil & Gas pipelines (onshore/offshore)
Petrochemical and refineries
Municipal water systems
Steam and condensate pipelines
Subsea infrastructure
Emergency pipeline repair kits

Why Choose Half Pipe Sleeve’s Pinhole Repair Clamps?

Quick emergency fix on live pipelines
Cost-effective vs welding or pipe replacement
Reliable under pressure in tough conditions
Usable underwater or in tight access areas
Compact and easy to stock for field crews

A pinhole might be small, but its impact doesn’t have to be. With Pinhole Repair Clamps, industries have a simple yet powerful way to respond to leaks quickly, safely, and cost-effectively. They bring together speed, reliability, and adaptability — qualities every maintenance team values.

At Half Repair Sleeve, we design our clamps to do exactly that: give you confidence that when leaks happen, you’ll have the right solution ready.

Contact for Pipe repaire Leak.

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Half Pipe Sleeve, Half Repair Pipe Sleeve, Pre-Stressed Metallic Sleeve.