Rosetexwool  Insulation Refractory Co., Ltd.
Calcium Silicate Pipe
Calcium Silicate

Calcium Silicate Pipe

Pre-formed calcium silicate pipe insulation sections for industrial piping systems with working temperature up to 1100℃.

Density
170-500 kg/m³
Raw Material
Quartz sand
Thickness
25-100mm
Asbestos
100% Non-Asbestos

Overview

  • ✦ Pre-formed for pipes
  • ✦ Excellent thermal insulation
  • ✦ High temperature resistance
  • ✦ Uniform insulation thickness

Pre-formed calcium silicate pipe insulation providing uniform and efficient thermal insulation for industrial piping systems. Same high-temperature resistance and low thermal conductivity as the board form, optimized for pipe applications.

What Is Calcium Silicate Pipe Insulation?

Calcium silicate pipe insulation is supplied as pre-formed half-shells that snap around industrial piping, giving uniform, efficient thermal insulation with very low conductivity and a non-combustible A1 profile.

Key Technical Specifications

Property Value
Maximum service temperature up to 650°C (ASTM C533 Type I; high-temp grade to ~1000°C)
Density 170–250 kg/m³ (Type I)
Thermal conductivity ≤0.065 W/(m·K) at 100°C; ≤0.095 W/(m·K) at 400°C
Standard thickness 25–100 mm
Standard dimensions pre-formed half-shells, pipe OD 15–1000 mm+
Fire classification A1 (non-combustible, EN 13501-1)
Composition xonotlite calcium silicate hydrate reinforced with inorganic fibre; 100% asbestos-free
Standards ASTM C533, EN 14306

Properties & Advantages

  • Very low thermal conductivity for a rigid material
  • A1 non-combustible, low chloride for stainless steel
  • Dimensional stability, low linear shrinkage
  • High compressive and flexural strength
  • Asbestos-free, easy to cut and fit

Typical Applications

  • Steam and condensate distribution lines
  • Hot-oil and process piping
  • Power-plant and refinery pipework
  • District-heating and heat-transfer systems

Installation & Handling

Fit the half-shells around the pipe with joints staggered between layers and secure with stainless bands (316 grade for coastal/outdoor). Seal butt joints and apply aluminium jacketing on weather-exposed runs.

Standards & Compliance

Manufactured to ASTM C533, EN 14306 and controlled under a documented quality system. Supplied by a manufacturer holding ISO 9001, CE and SGS certifications, exporting high-temperature insulation to 60+ countries since 1982.

Why Specify This Product

Combines stable high-temperature performance with straightforward on-site fabrication. The material is asbestos-free, chemically stable in neutral and oxidising atmospheres, and supplied with full technical data sheets to support specification and inspection. Supplied by a manufacturer holding ISO 9001, CE and SGS certifications, exporting high-temperature insulation to 60+ countries since 1982.

Manufacturer & Supplier

Rosetexwool is a calcium silicate pipe insulation manufacturer and supplier serving more than 60 countries since 1982. Every calcium silicate pipe insulation is produced under a documented quality system certified to ISO 9001, CE and SGS, with batch-level traceability from raw material to finished product.

What our manufacturing capability covers:

  • In-house melting, fibre-forming and finishing lines for consistent grade and density
  • Dimensional, density and thermal checks against ASTM C533, EN 14306
  • Asbestos-free, low-impurity formulations verified by incoming and outgoing inspection
  • Standard and custom sizes, OEM/ODM grades, and cut-to-size supply for project quantities

For quotations, lead times or technical data sheets, contact our team with your specification and target service temperature. Explore the calcium silicate insulation hub for the full range, or read the calcium silicate insulation buying guide for selection support.

Related Calcium Silicate Products & Alternatives

calcium silicate insulation board — Rigid calsil board carrying the highest compressive strength of any hard insulation block, holding its shape without deformation at working temperature while staying fully asbestos-free.

high density calcium silicate board — Ultra-high density board above 500 kg/m³ for applications where the insulation also has to carry mechanical load.

nano insulation board — Microporous board with exceptional thermal performance in an ultra-thin rigid profile, stable over long service at temperature.

For the full calcium silicate range, temperature limits and strength data, see our calcium silicate insulation guide.

For adjacent material options across temperature and application ranges, explore our rock wool insulation hub.

Part of the Calcium Silicate product family.

Key features

  • ✓ Pre-formed for pipes
  • ✓ Excellent thermal insulation
  • ✓ High temperature resistance
  • ✓ Uniform insulation thickness
  • ✓ Easy installation
  • ✓ Asbestos-free

Typical applications

  • Industrial steam pipe insulation
  • High-temperature process piping
  • Petrochemical pipe systems
  • Power plant piping
  • District heating networks

Technical specs

Density
170-500 kg/m³
Raw Material
Quartz sand
Thickness
25-100mm
Asbestos
100% Non-Asbestos

Last updated: September 19, 2026

Frequently asked

What is the maximum temperature for calcium silicate insulation? +

Calcium silicate insulation boards can withstand continuous temperatures up to 1100°C. They offer high compressive strength and excellent dimensional stability, making them ideal for high-temperature pipe supports, furnace backup insulation, and aluminium smelter applications.

How does calcium silicate compare to ceramic fiber? +

Calcium silicate offers significantly higher compressive strength (up to 6 MPa) than ceramic fiber blankets, making it the preferred choice for load-bearing insulation. It is supplied in rigid board form, easy to cut and machine. Ceramic fiber, however, offers higher temperature limits (up to 1430°C) and lower thermal conductivity in blanket form.

Is calcium silicate asbestos-free? +

Absolutely. All our calcium silicate products are manufactured using an asbestos-free formula. They meet international health and safety standards including ASTM C533 and EN 14306, and are certified as non-hazardous material for transport and handling.

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