In industrial plants, routing multiple seamless steel tubes (such as DIN 2391 or ASTM A213) for high-pressure fluid transmission consistently presents a significant challenge. Confined spaces often lead to cluttered layouts, increasing the inherent risk of connection fractures caused by continuous vibration.

To thoroughly address this issue, Heavy Series Stackable Clamps serve as the ultimate fastening solution, ensuring stable system operation while maximizing footprint efficiency.
How Does Stacking Assembly Work?
Instead of welding numerous base plates spread across the floor space, the stacking mechanism allows you to mount multiple clamp layers vertically using only a single weld plate position. The system is securely connected through standard components. As a general rule, the manufacturer recommends a maximum of three layers to ensure stability and the necessary retaining forces, even at the upper levels. The stability of the structure must be individually verified by the user and evaluated within the overall context of the system and the expected mechanical loads.
- Base Layer (Bottom): Two clamp halves are placed on the weld plate and secured with stacking bolts. These specialized bolts feature an internal thread in the head to accommodate the second layer.
- Middle Layer: A locking plate (code TH-L) is placed on top of the lower clamp body to lock it securely and create a flat surface. Subsequently, the next clamp halves are positioned and tightened using another set of stacking bolts.
- Top Layer: The clamp assembly is completed with a cover plate and firmly tightened using hexagon head bolts or socket head screws.

Outstanding Technical Features Compliant with German Standards
The heavy-duty stackable clamps provided by VHE strictly comply with the DIN 3015 standard, ensuring mechanical durability for systems subjected to high vibration amplitudes.
Depending on the ambient temperature and the properties of the fluid, users can flexibly choose the clamp body material:
- Polypropylene (PP): Code THPG (grooved) or THPS (smooth), suitable for standard industrial operating conditions.
- Polyamide (PA6): Code THNG (grooved) or THNS (smooth), offering superior wear resistance and impact strength.
- Aluminum: Code THAG , the perfect choice for environments with extreme temperatures (Size 9 and Size 10 use aluminum material by default ).
The inside surface of the clamp body is also available in two options: The Grooved profile increases friction to grip the steel tube tightly , while the Smooth profile minimizes scratches on the tube's surface.

Technical Consultation with Vina Hydraulic Equipment Joint Stock Company (VHE)
Calculating the number of layers, selecting material codes, or choosing dimensions requires technical expertise to ensure absolute safety for the project. The team at VHE is always ready to partner with you to deliver the optimal piping layout and finalize the best materials for your facility.
Important Note: All product pricing information will be provided most accurately through direct consultation with our engineers tailored to your specific project.
Contact VHE today for advice on stackable clamp solutions and to receive a detailed quotation!
- Consultation & Support Hotline: 0903 067 588
- Support Email: [email protected]
- Office Address: 31 D20 Street, Phuoc Long Ward, Ho Chi Minh City, Vietnam
- HCM Warehouse & Workshop: Road No. 10, Song Than Industrial Park, Di An Ward, Ho Chi Minh City, Vietnam
- Hanoi Warehouse & Workshop: Km28, National Route 6A, Dong De Industrial Park, Phu Nghia Commune, Hanoi City, Vietnam






