Achieving SSPC-SP10 / Near-White Metal cleanliness in the field — away from a blast pot, without containment, in locations where running a power cord is impractical or prohibited — has historically required accepting a compromise on surface preparation quality. The Bristle Blaster® Ultimate Cordless removes that compromise. It produces cleanliness comparable to SSPC-SP 10 and a 65–85 µm Rz anchor profile on 18 V CAS battery power, with no abrasive media and no grit containment requirement.

For pipeline field joint coating, bridge and infrastructure spot repair, offshore structural maintenance in non-ATEX-classified zones, and any application where blast-equivalent surface preparation must happen in a location that blasting cannot reach or is operationally unacceptable, the Bristle Blaster® Ultimate Cordless is the direct answer to a specific technical problem. Note: for work in ATEX-classified atmospheres (explosive gas environments), the Bristle Blaster® Pneumatic is the designated MontiPower tool — it holds ATEX Zone 1 approval (ExII2GcIIAT4X). The cordless Ultimate does not carry ATEX certification.

What SSPC-SP10 requires — and what the Bristle Blaster® delivers

SSPC-SP10 (Near-White Blast Cleaning) specifies the removal of all visible rust, mill scale, coating, and foreign matter from the steel surface, with only light shadows, streaks, or slight discoloration from rust staining or mill scale oxides remaining. It is the required surface preparation standard for the majority of high-performance industrial coating systems, including immersion-service coatings, thermal spray coatings, and the primary coatings used on offshore structural steel, process piping, and buried or immersed pipeline systems.

Meeting SSPC-SP10 with mechanical tools — rather than abrasive blasting — has historically been difficult to achieve reliably. Wire brushing, needle guns, and angle grinders do not consistently produce cleanliness comparable to SSPC-SP 10 or a defined anchor profile; they are typically limited to SSPC-SP3 (Power Tool Cleaning) or at most SSPC-SP11 (Power Tool Cleaning to Bare Metal). The Bristle Blaster® mechanism is different: hardened steel wire tips rotate at high speed and impact the surface at a specific angle, removing contamination and mechanically deforming the steel surface to produce a defined angular profile. MontiPower-commissioned independent laboratory testing on API 5L pipeline steel has shown that the Bristle Blaster® process produces an anchor profile of 65–85 µm Rz, comparable in texture and adhesion performance to traditional grit blasting on that steel grade. The MontiPower cordless solutions brochure confirms Sa 2½ (ISO 8501-1) cleanliness for the Bristle Blaster® Ultimate Cordless specifically.

A number of major coating manufacturers — including Akzo Nobel, Hempel, Jotun, PPG, and others — accept the Bristle Blasting process as a surface preparation method for their industrial coatings when the specified cleanliness grade and anchor profile are achieved. Verify approval status with the specific product TDS for the coating system in use on your project.

Why cordless matters for SSPC-SP10 work

Power tool surface preparation has traditionally required a corded electric or pneumatic tool. Both options work in fixed or well-equipped locations. In the field — on a pipeline right-of-way, at a field joint 500 meters from the nearest power source, on an elevated offshore structure without convenient outlet access, or in a confined space where trailing cables create entanglement and safety hazards — corded tools create real operational constraints. Pneumatic tools require an air compressor in proximity, which is often impractical at remote locations and prohibited in certain confined or hazardous space configurations.

The Bristle Blaster® Ultimate Cordless eliminates both dependencies. On CAS 18 V LiHD battery power, it operates wherever the work is, with no trailing cable and no compressor requirement. Battery swap is fast: when one pack is depleted, a charged CAS pack — drawn from the same pool as all other CAS tools on site — is fitted and work continues. For operations already running CAS batteries, hot-swapping is seamless.

CAS battery performance for continuous surface prep

Surface preparation is a high-demand application for a battery tool. The Bristle Blaster® operates under continuous mechanical load — rotating wire tips impacting corroded or coated steel — which draws sustained current from the battery pack. The relevant battery specification for this use is the 18 V 8.0 Ah LiHD pack (MontiPower item code ZU-602). At 1.0 kg (2.2 lbs), it adds minimal weight to the tool assembly while providing the highest available runtime in the CAS platform.

For lighter-duty tasks, touch-up work, or applications where tool weight is a primary concern — work at height, overhead prep, tight access — the 5.5 Ah LiHD pack (ZU-600) is the alternative. It weighs 0.9 kg (2.0 lbs) and provides adequate runtime for shorter or lighter-demand work segments. A 10.0 Ah pack is also available within the CAS platform for the most demanding continuous applications.

Because MontiPower packs are CAS-compatible, they are interchangeable with packs from Metabo or any other CAS brand. An operation with a significant existing CAS battery stock can run the Bristle Blaster® Ultimate directly on existing packs without purchasing new batteries.

ATEX environments: which tool to use

ATEX Zone 1 covers locations where an explosive atmosphere in the form of flammable gas or vapor is likely to occur in normal operation. ATEX Zone 2 covers locations where such an atmosphere may occur in abnormal conditions. Both zones are common in offshore production facilities, refineries, petrochemical plants, and gas processing infrastructure. Standard power tools — including most cordless battery tools — cannot be used in these zones without the relevant explosion protection certification.

The Bristle Blaster® Ultimate Cordless does not carry ATEX certification. For work in ATEX-classified areas, the correct MontiPower selection is the Bristle Blaster® Pneumatic, which holds ATEX Zone 1 approval (ExII2GcIIAT4X) and is suitable for use in gas-group IIA environments at temperature class T4. The Bristle Blaster® Pneumatic is widely used in offshore, refinery, and petrochemical maintenance for this reason.

The Bristle Blaster® Ultimate Cordless is suited to general industrial environments, remote locations, confined spaces without a classified gas atmosphere, and any non-ATEX work area where power access is limited. Many offshore and refinery maintenance tasks are performed in non-classified areas adjacent to process equipment — structural steel, external pipe supports, decks away from process zones — where the cordless Ultimate is the appropriate and more practical tool choice.

Primary application environments

Pipeline field joints — the defining use case

Field joint coating of buried and subsea pipelines requires SSPC-SP10 / Sa 2½ surface preparation at each girth weld location, performed in the field after welding, before the joint coating is applied. Abrasive blasting at a field joint is logistically difficult: it requires blast equipment, abrasive supply, and containment at remote locations, and blasting in a bell hole or on the seafloor presents serious operational constraints. The Bristle Blaster® was originally developed for exactly this application — and the cordless Ultimate version extends the capability further by removing the power supply dependency entirely.

Offshore structural maintenance

Offshore platforms require continuous structural maintenance painting, particularly in the splash zone, on deck equipment bases, and at structural connections where coating systems must meet performance specifications that require SP-10 preparation. Work on live platforms cannot use open-blast operations due to contamination risk and operational constraints. The Bristle Blaster® Ultimate Cordless delivers compliant surface preparation without grit and without containment, using battery power that integrates with CAS cordless tool infrastructure. Note that ATEX-classified areas on offshore platforms require the Bristle Blaster® Pneumatic — the cordless Ultimate is suited to non-classified structural maintenance work on and around the platform.

Refinery and petrochemical maintenance

Refinery structural steel, process piping, and equipment supports require maintenance coating in environments where grit blasting creates contamination risk to nearby process equipment, instrumentation, and operating units. The Bristle Blaster® allows SP-10 preparation to be performed adjacent to operating equipment, in contained maintenance windows, without the contamination and safety exclusion zones associated with abrasive blasting.

Bridge and infrastructure spot repair

Bridge maintenance painting requires spot repair of coating failures, weld zone treatment, and preparation of expansion joints and connection details where full blast mobilization is disproportionate to the work area. The Bristle Blaster® Ultimate Cordless addresses all of these: SP-10 quality on battery power, at any location on the structure, without grit containment or power access constraints.

The Two-Step MontiPower Method with the Ultimate Cordless range

For surfaces with heavy corrosion or thick existing coatings, the Two-Step MontiPower Method applies: first, the Tercoo® removes bulk rust and heavy coating build-up; then the Bristle Blaster® Ultimate Cordless performs the final profiling step to achieve SSPC-SP10 cleanliness and anchor profile. This two-step sequence is particularly applicable in refinery and offshore maintenance where substrates have accumulated multiple coating layers and significant corrosion over long service intervals.

Key takeaways

  • The Bristle Blaster® Ultimate Cordless achieves surface cleanliness comparable to Sa 2½ (ISO 8501-1) / SSPC-SP 10, and 65–85 µm Rz anchor profile on 18 V CAS battery power — no abrasive media, no containment, no power cord.
  • The cordless Ultimate does not carry ATEX certification. For ATEX-classified environments, the Bristle Blaster® Pneumatic (ATEX Zone 1, ExII2GcIIAT4X) is the correct MontiPower selection. The cordless is suited to general industrial environments and non-classified work areas.
  • The 18 V 8.0 Ah LiHD pack (ZU-602) is recommended for continuous surface preparation. A 10.0 Ah pack is available for maximum runtime. All CAS-brand 18 V packs are interchangeable with MontiPower Ultimate tools.
  • Primary applications: pipeline field joint coating prep, offshore and refinery structural maintenance in non-ATEX zones, bridge and infrastructure maintenance painting — locations where grit blasting is impractical, prohibited, or logistically disproportionate.
  • For heavily corroded or thickly coated substrates, the Two-Step MontiPower Method — Tercoo® for bulk removal, Bristle Blaster® Ultimate for final profiling — delivers surface quality comparable to SSPC-SP 10.

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