STAUFF ACT-MLC Multi-Line Clamps

ACT-MLC: Multi-Line Clamps (MLC) with STAUFF Anti-Corrosion Technology (ACT)

Find out about the newest addition to our Clamp assortment. Ideal for challenging offshore applications.

Perforated C-shaped metal rails made from high-grade stainless steel V4A providing structural strength and corrosion resistance

Perforated C-shaped metal rails available in standard lengths to accommodate 3 or 5 pipes or 10 pipes for maximum flexibility during assembly – custom lengths up to 2 meters can be cut to size for tailored installations.

Easy to molunt into standard field trays and cable ladders with diagonal, lengthwise, and crosswise perforations using hammer head bolts and all-metal self-locking hexagon nuts

Available for the most common outside diameters for instrumentation pipework: 6,4 mm (¼ inch), 9,5 mm (⅜ inch) and 12,7 mm (½ inch) – additional diameters on request

Clamp inserts made from flame-retardant Polypropylene PP-V0 material

Integrated elastomer strips to prevent the ingress and accumulation of seawater between the clamp inserts and the pipe surface

Overall design fully compliant with Norsok Z-010 and specification S-716 of the International Oil & Gas Producers Association (IOGP) for small bore tubing and fittings, which was created as part of the Joint Industry Programme 33 (JIP 33)

Dedicated distance sleeves ensuring optimal compression on the clamp inserts and their integrated elastomer strips for peak corrosion resistance

We are presenting the new ACT-MLC Multi-Line-Clamps

The ACT-MLC series represents the latest development in STAUFF’s Anti-Corrosion Technology (ACT) clamp portfolio. Specifically engineered for the parallel installation of multiple pipes in instrumentation and hydraulic systems, ACT-MLC clamps combine a space-saving multi-line design with enhanced corrosion protection proven in long-term field use of the design and laboratory testing.

Like regular Single and Twin clamps in the ACT range, ACT-MLC clamps feature integrated elastomer strips within the clamp insert as well as drainage channels to prevent the ingress and accumulation of seawater between the clamp bdy and pipe surface. This eliminates one of the primary causes of crevice corrosion on stainless steel instrumentation pipework and hydraulic tubing, extending the service life of critical components in marine, offshore, and other aggressive industrial environments.

What makes ACT-MLC Multi-Line-Clamps unique?

The ACT-MLC series is the result of thoughtful engineering and materials science:

The clamp inserts are made from flame-retardant plastic material based on Polypropylene (PP-V0), enhanced with integrated elastomer strips for added sealing and protection against the ingress of seawater.

The C-shaped metal rails, made from high-grade stainless steel V4A, provide structural strength and corrosion resistance.

Rails are available in standard lengths to accommodate 3 or 5 pipes (with two bolts) or 10 pipes (with three bolts, including one centrally positioned).
Custom lengths up to 2 meters can be easily cut to size for tailored installations.

Using hammer head bolts and precision distance sleeves, the clamps are secured with the correct pressure to maximize performance and longevity.

ACT-MLC can be easily mounted into standard field trays and cable ladders, thanks to its bolt-and-slot design that accommodates diagonal, lengthwise, and crosswise perforations.

To maintain maximum corrosion protection, we recommend storing ACT components (in particular metal parts) separately from carbon steel and using clean tools during assembly.

What are the areas of application for the new ACT-MLC Multi-Line Clamps?

Whether you're working on an offshore platform, an FPSO unit, or any industrial facility exposed to extreme conditions, the ACT-MLC series is engineered to protect your instrumentation and hydraulic systems from the elements – without compromising on space and enhancing ease of use.

Easy assembly of ACT-MLC Multi-Line-Clamps

Product Datasheet

PDF

ACT-MLC Multi-Line Pipe Clamps

Anti-Corrosion Technology (ACT) for Challenging Applications

0.64 mb

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FAQs for ACT-MLC Multi-Line-Clamps

What is the ACT-MLC Clamp Series?

The ACT-MLC series is an innovative multi-line pipe clamp from STAUFF that combines space-saving multi-line installation with the company’s proven Anti-Corrosion Technology (ACT). It is specifically designed for demanding environments such as offshore, marine, and oil & gas installations.

What does ACT-MLC stand for?

ACT-MLC stands for Anti-Corrosion Technology – Multi-Line Clamp. The series enables the secure and corrosion-resistant installation of multiple parallel pipes within a compact footprint.

What makes the ACT-MLC unique?

Enables multiple pipe installations in restricted spaces
Integrated elastomer strips prevent seawater ingress and crevice corrosion
Independently tested corrosion protection
High-grade stainless steel components
Faster, easier installation
Fully compliant with industry standards including NORSOK Z-010 and specification S-716 of the International Oil & Gas Producers Association (IOGP) for small bore tubing and fittings, which was created as part of the Joint Industry Programme 33 (JIP33)

How does ACT-MLC provide corrosion protection?

The clamp inserts feature integrated elastomer strips that prevent seawater from accumulating between the clamp body and the pipe surface – an essential factor in mitigating crevice corrosion on stainless steel tubing.

What materials are used in ACT-MLC?

Clamp Inserts: Flame-retardant Polypropylene (PP-V0) with integrated elastomer strips
Rails: Stainless steel (V4A / 1.4404 / 316L) for structural integrity
Bolts and Nuts: Stainless steel hammer head bolts, washers and lock nuts
Distance Sleeves: Ensure correct compression and secure fit

What pipe sizes are available?

Currently, ACT-MLC clamps are available for the following common instrumentation pipe diameters:

6.4 mm (¼ inch)
9.5 mm (⅜ inch)
12.7 mm (½ inch)

Additional metric and imperial sizes are planned based on customer requirements.

How many pipes can be installed per clamp rail?

Standard rail configurations include:

3 or 5 pipe positions (using two bolts)
10 pipe positions (using three bolts, including one centrally positioned)

Custom rail lengths up to 2 meters are available for tailored installations.

Where is ACT-MLC ideally used?

ACT-MLC is designed for use in harsh and corrosive environments, especially:

Offshore oil and gas platforms
FPSOs (Floating Production Storage and Offloading units)
Marine vessels and other infrastructure
Salt mines and potash mining
Other critical industrial environments

How has ACT-MLC been tested for corrosion resistance?

The ACT-MLC series has undergone cyclic corrosion testing (CCT) in accordance with international standards and customer-specific requirements. Testing confirmed no visible crevice corrosion on pipe surfaces after extended exposure.

Is ACT-MLC certified or compliant with industry standards?

Yes, ACT-MLC meets or exceeds the requirements of:

NORSOK Z-010
Specification S-716 of the International Oil & Gas Producers Association (IOGP) for small bore tubing and fittings, which was created as part of the Joint Industry Programme 33 (JIP33)
Other relevant international offshore and industrial application guidelines and standards

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