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Sliding Pipe Shoe
Sliding travel limits from 25–150 mm (custom) and friction coefficient ≤0.15. 304 stainless steel construction and cryogenic PUF insulation (250 kg/m³ density) enable -162°C operation.
Description
The sliding pipe shoe is purpose-built for pipelines requiring unobstructed axial movement due to thermal expansion. It integrates a load-bearing cradle with a low-friction sliding interface, designed to EN13480-3 for displacement control. The sliding surface consists of a PTFE plate bonded to a steel substrate, providing a friction coefficient of ≤0.15 to minimize pipe stress during movement. The insulation core is a high-density polyurethane foam with a vapor barrier, preventing cold loss and condensation in cryogenic applications down to -162°C. The baseplate is fixed to the structure, while the cradle slides freely, with hard stops to limit displacement to pre-set ranges (25–150 mm) and prevent overtravel.
Product Features
PTFE slide plate with 5 mm thickness and friction coefficient ≤0.15, tested to 100,000 sliding cycles without degradation.
The sliding pipe shoe has the following feature: It is equipped with pre - set hard stops, and the travel limits can be adjusted within the range of 25 - 150 mm to match the pipeline thermal expansion calculations.
Cryogenic-grade PUF insulation (density 250 kg/m³) with compressive strength 2.4 N/mm² for load-bearing stability.
304 stainless steel cradle and slide plate substrate for ultra-low temperature resistance (-162°C) and corrosion protection.
Main Applications
Sliding pipe shoes are commonly used in pipelines of LNG liquefaction and regasification plants, where the operating temperature is -162°C.
High-temperature steam lines in power plants with thermal expansion up to 100 mm.
Cross-country pipeline segments with seasonal temperature variations and axial movement.
Chemical plant reactor loops with cyclic thermal loading and displacement requirements.
FAQ
Q: What is the maximum sliding travel?
A: Standard travel limits are 25, 50, 75, 100, and 150 mm; custom limits up to 300 mm are available.
Q: How is the slide plate maintained?
A: The PTFE plate is bolted and can be replaced in 30 minutes per unit without removing the pipe; no regular lubrication is needed.
Q: Can it be used in outdoor environments?
A: Yes, the 304 stainless steel construction and drainage holes prevent ice and debris buildup, suitable for outdoor installation.
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