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Industrial Heat Tracing

Industrial Heat Tracing for Process Temperature Maintenance

Keep temperature requirements at the centre of your process planning. 

Heat tracing applies heat to the outside of pipes or equipment to meet a defined temperature requirement. It is used for duties such as process-temperature maintenance and freeze protection, with the system selected around the material being handled and the conditions on site. 

Cape Refractory Industries welcomes industrial heat-tracing enquiries in South Africa. Provide your process and equipment details so that the required system scope, technical inputs and specialist delivery requirements can be established. 

Heat tracing serves more than frost protection 

Temperature loss can affect a process even when ambient conditions are well above freezing. 

Some materials become more viscous as they cool. Others may solidify or become difficult to transfer. Reduced flow, idle periods and planned stoppages can change the thermal conditions along a line. 

A heat-tracing assessment should therefore begin with the process requirement: 

  • What temperature must be maintained? 
  • What happens if the material cools? 
  • Will the line operate continuously or intermittently? 
  • Is the requirement temperature maintenance or heating from a lower starting temperature? 
  • What temperatures might the system experience during cleaning or other operating cycles? 

These answers help define the duty before equipment is selected. 

Heating cable, insulation and controls work together 

An electrical heat-tracing system can include heating cable, connections, temperature sensors, controllers and electrical protection. 

Insulation is also central to the design because it influences heat loss and the heating duty. Protective cladding helps shield the insulation from the surrounding environment. 

Cable type alone does not determine whether a system is suitable. Selection must also consider temperature limits, circuit length, supply voltage, environmental exposure and the required control arrangement. 

Self-regulating cable adjusts its output in response to local temperature conditions. Constant-wattage and other heating technologies have different characteristics. The appropriate choice depends on the application. 

New systems and existing equipment 

For new installations, heat tracing should be considered alongside pipe layout, insulation, power availability and maintenance access. 

An existing system requires additional information. Cable identification, drawings, control settings, operating history and the condition of the insulation can help define an assessment or replacement enquiry. 

Hazardous-area requirements must be identified at the start so that equipment suitability and the necessary specialist scope can be addressed. 

Send a clear heat-tracing enquiry 

Provide Cape Refractory Industries with: 

  • The process material and required temperature. 
  • Normal and maximum exposure temperatures. 
  • Pipe dimensions, lengths and equipment details. 
  • Existing or proposed insulation. 
  • Available electrical supply. 
  • Site location and environmental conditions. 
  • Whether the enquiry concerns new work or an existing system. 

Our team can then establish the information and delivery arrangements needed to progress the enquiry. 

Discuss Heat Tracing

Frequently asked questions

  • What is the difference between heat tracing and thermal insulation?

    Heat tracing adds heat to a system. Insulation limits heat transfer. They are normally considered together to achieve the required temperature performance.
  • Can heat tracing maintain a process temperature during a stoppage?

    It may be designed for that duty. The assessment must consider the duration of the stoppage, heat loss, target temperature, available power and the characteristics of the process material.
  • Does self-regulating heating cable need temperature control?

    The cable’s response does not automatically remove the need for controls, monitoring or electrical protection. Those requirements depend on the complete system and its intended duty.
  • Can a heat-tracing system heat a cold product to operating temperature?

    Heat-up duty is different from maintaining an existing temperature. It requires assessment of the material, starting temperature, target temperature and allowable heating time. It should not be assumed that a maintenance system can perform both duties.
  • Is temperature instrumentation the same as heat tracing?

    No. Instrumentation measures temperature and may provide inputs to a control system. Heat tracing supplies heat. Sensors are one possible component of the wider installation.

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Industrial Insulation Cladding

Industrial Insulation Cladding for Pipes, Tanks and Vessels 

Protect the insulation that supports your process. 

Industrial insulation cladding is the outer covering fitted around an insulation system. Often called metal jacketing, it helps protect the insulation from weather exposure and physical damage. 

Cape Refractory Industries welcomes enquiries for protective cladding on insulated pipes, tanks, vessels and associated industrial equipment in South Africa. The requirement should be considered alongside the insulation beneath it, the operating environment and the need for future access. 

Select the covering for the environment  

Cladding material should be chosen for the conditions it will face. Indoor equipment, exposed pipework, coastal sites and areas subject to frequent washdown can present different requirements. 

Aluminium and stainless steel are common material options for industrial metal jacketing. The appropriate selection depends on factors such as environmental exposure, mechanical demands, compatibility and the project specification. 

The discussion should cover more than the metal type. Material grade, thickness, finish, fittings and fastening arrangements all contribute to the proposed system. 

Good detailing matters around fittings   

Straight pipe sections are only part of a cladding installation. Bends, branches, valves, flanges and equipment supports introduce changes in shape and potential entry points for moisture. 

The cladding arrangement should account for: 

  • Joints and overlaps that shed water appropriately. 
  • Terminations around supports and penetrations. 
  • Movement during heating and cooling. 
  • Protection in areas exposed to impact. 
  • Access to inspection and maintenance points. 
  • Identification of equipment that must remain visible. 

Where regular access is required, the covering and insulation should be designed with removal and reinstatement in mind. 

Replacing damaged cladding 

Loose, dented or missing cladding should prompt a check of the insulation beneath it. The visible damage may be limited to the outer covering, or it may be accompanied by moisture ingress and deterioration deeper in the system. 

Replacing the metal covering alone does not resolve every defect. The condition of the insulation and the underlying equipment should inform the repair scope. 

Cladding also forms part of a wider approach to managing moisture-related deterioration. It should not be presented as a guarantee against corrosion under insulation. 

Define your cladding requirements 

Send Cape Refractory Industries the equipment dimensions, insulation thickness, site location and any existing material specification. 

For replacement work, describe the damage and the extent of the affected area. Include access restrictions and the available maintenance window so that the proposed scope can account for the practical requirements of the site. 

Discuss Insulation Cladding

Frequently asked questions

  • Is industrial insulation cladding the same as building cladding?

    No. This application concerns the protective covering around insulated process equipment and pipework. Roof and wall cladding serves a different purpose and follows different design requirements.
  • Does metal cladding provide the insulation?

    Metal jacketing is primarily a protective covering. It does not replace the insulating material beneath it. The complete system must provide the required thermal and protective performance.
  • Is stainless steel always better than aluminium?

    Neither is the right choice for every application. Selection depends on the environment, material compatibility, mechanical requirements and specification. Grade and thickness also matter.
  • Can damaged cladding be replaced without replacing the insulation?

    Sometimes. The insulation must first be assessed. Dry, intact insulation may be suitable to retain, while wet, contaminated or damaged material may require replacement.

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Industrial Thermal Insulation

Industrial Thermal Insulation for South African Plants

Manage heat transfer across your pipes, boilers, tanks and process equipment.

Industrial thermal insulation limits the movement of heat between equipment and its surroundings. On hot systems, it helps reduce heat loss. On cold systems, it helps limit heat gain and, when correctly specified, manage surface condensation. Cape Refractory Industries welcomes thermal-insulation enquiries for industrial applications in South Africa. From our Brackenfell base in Cape Town, we help customers establish their material and project requirements around the equipment, operating conditions and intended result.

Start with the operating conditions

The right insulation depends on more than the temperature shown on a datasheet. Equipment dimensions, ambient conditions, exposure to moisture, operating cycles and maintenance access all influence the specification. 

A useful starting point is to identify what the insulation must achieve: 

  • Reduce heat loss from heated equipment. 
  • Support a required process temperature. 
  • Address exposed surface temperatures. 
  • Limit heat gain into cold systems. 
  • Control condensation as part of a complete cold-service design. 
  • Replace missing, damaged or unsuitable insulation. 

These objectives should guide the material selection and thickness rather than applying the same solution throughout a plant. 

Pipe, boiler and tank insulation 

Pipe insulation and lagging should account for the complete route, including bends, branches, supports, valves and flanges. Areas requiring regular inspection need particular attention so that maintenance remains practical. 

Boiler insulation must suit the equipment and the area being insulated. External thermal insulation serves a different purpose from a refractory lining inside a combustion chamber. Where both are present, their requirements should be considered separately. 

Tank and vessel insulation must account for the operating temperature, equipment geometry, supports, penetrations and external exposure. 

For cold equipment, insulation joints and vapour-control details are especially important. A suitable material alone cannot compensate for an incomplete system. 

Insulation and protective cladding 

The insulating layer provides thermal resistance. Protective cladding shields that layer from the surrounding environment and mechanical damage. 

Both need to be considered together, particularly on exposed outdoor equipment. Maintenance access, termination details and protection against moisture should form part of the discussion from the outset. 

Discuss your insulation requirements  

For a new installation or replacement enquiry, send Cape Refractory Industries: 

  • Your South African site location. 
  • Equipment type and dimensions. 
  • Normal and maximum operating temperatures. 
  • Existing insulation details, where available. 
  • The purpose of the work and required completion date. 

Tell us whether you require material supply, installation or replacement work so that the appropriate project scope can be established. 

Discuss Thermal Insulation

Frequently asked questions 

  • What is the difference between thermal insulation and lagging?

    Thermal insulation describes materials and systems that limit heat transfer. Lagging is a commonly used term for insulation fitted around pipes and equipment. The specification should identify the actual material, thickness and protective covering required.

  • How much insulation does a steam pipe need?

    The required thickness depends on the pipe dimensions, operating temperature, insulation properties, ambient conditions and performance target. There is no single thickness suitable for every steam line.

  • Can insulation reduce energy costs?

    Suitable insulation can reduce unwanted heat transfer. The financial benefit depends on the existing condition, operating hours, energy costs and proposed system. Savings should be calculated for the application rather than assumed.

  • Does Cape Refractory’s ceramic fibre range cover every insulation application?

    No single material family suits every duty. Ceramic fibre products have specific applications, while other systems may require different materials. Selection should follow the operating conditions and project specification.

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