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Amphibious clamshell grabs: versatile technology for hostile environments

Amphibious clamshell grabs are indispensable in industrial environments, and they have specific characteristics and requirements that demand tools designed and manufactured specifically for them. For instance, those involving tasks ranging from handling sludge to extracting materials at marine depths. In this context, amphibious machinery has proven its worth across various industries. This article will explore the importance of amphibious clamshell grabs, their key features, and their relevance in today's industrial landscape.

Sludge handling, mud, and extraction in wells

The primary feature of amphibious clamshell grabs is their waterproofing. In environments where water ingress can compromise the tool's integrity and effective material collection, keeping internal components dry is crucial. Waterproofing ensures that the grabs can operate efficiently and safely even in marine and underwater conditions, extending their lifespan and minimising the risk of failures.

Moreover, a fundamental aspect of manufacturing clamshell grabs is their surface treatment, which involves an initial shot blasting process, primer treatments, and finishes with thicknesses of up to 250 microns. This protective layer provides exceptional resistance to corrosion and wear, ensuring the durability of the grabs in hostile environments. The electrical connection is also made with IP-68 multipolar plugs, equipped with a double safety system to prevent snagging and breakages on the seabed. This system ensures a secure connection even in extreme conditions, providing operators greater peace of mind.

Thanks to the above, clamshell grabs are suitable for various applications, from handling sludge and mud to extracting materials in sand wells and sedimentation tanks. Their versatile design allows them to adapt to different material densities and environmental conditions, ensuring optimal performance in any setting.

Design and manufacturing of amphibious grabs: adaptability to extreme conditions

Due to their specific needs, all machines designed to operate in amphibious conditions undergo rigorous design and manufacturing standards. Clamshell grabs are calculated and manufactured to work in marine environments up to a depth of 100 meters, ensuring their performance even in the most adverse conditions.

In the case of Stemm, the waterproofing of amphibious clamshell grabs is verified through intensive testing involving renowned external entities such as Lloyd's, TÜV, DNV, and BUREAU VERITAS, among others. This process ensures the grabs meet the highest quality and safety standards, providing operators peace of mind in challenging environments.

Stemm offers two amphibious clamshell grab models suitable for handling sludge, mud, sand, rubble, stones, or shells, among other materials. The models 2CHA-2,8 and 4CHA-2,8 both guarantee maximum penetration and compaction force, allowing for complete fills, thanks to their robust structure in high-yield steel. Additionally, they feature a watertight, pressurised tank with anti-condensation and load safety systems, capable of working at any inclination. Their maintenance-free, grease-free joints facilitate their preservation in perfect condition for as long as possible.

Stemm: manufacturing tools adapted to challenging industrial environments

Stemm's amphibious clamshell grabs offer efficient and durable solutions for various applications in hostile environments. Their robust design, guaranteed waterproofing, and ability to adapt to different conditions make them fundamental tools for operations in challenging industrial environments. With advanced technology and meticulously controlled quality standards, these grabs offer exceptional performance and greater peace of mind to operators working in extreme conditions. Stemm's amphibious clamshell grabs are a reliable and effective option for facing industrial challenges in diverse scenarios.