Brief Description:Rock wool pipe sections are A1 non-combustible inorganic insulation made from premium basalt ore via high-temperature melting and centrifugal spinning. Featuring stable thermal insulation, sound absorption and corrosion resistance, they fit HVAC, heating, steam and industrial pipelines. Custom sizes available for construction and industrial pipe insulation projects.

Haochen stone wool pipe sections are manufactured from premium natural basalt ore. The raw material undergoes high-temperature melting and high-speed centrifugal spinning to produce high-purity inorganic mineral fibres, which are cured and shaped with eco-friendly thermosetting binders. This pre-formed cylindrical insulation material is specially engineered for all types of piping systems. It delivers consistent performance and compact structure, offering outstanding thermal insulation, fire resistance, acoustic absorption and anti-corrosion properties. Widely used for thermal preservation, flame retardancy and noise reduction on industrial process pipework, HVAC ducting, hot and cold utility pipelines, it is a versatile, reliable primary material preferred for piping insulation projects.

1. Product Range & Selection Guide

Haochen stone wool pipe sections are available in multiple variants. Products can be selected flexibly according to service environment, temperature conditions and project requirements, fully matching insulation, fire protection and acoustic systems for civil and industrial pipework.

1. Pre-slit Tongue-and-Groove Water-repellent Stone Wool Pipe Sections (Premium Grade)This innovative segmented pipe insulation is a flagship product from Haochen, featuring high forming precision and stringent raw material selection for stable one-piece forming quality. As an upgraded new development, custom multi-segment split structures are available, including 3-segment and 4-segment options, ideal for large-diameter pipe installation. It is designed for renovation projects of new and existing pipework, perfectly suited for non-detachable and pre-buried pipelines. It meets high-standard combined requirements of thermal insulation, fire protection and noise reduction for indoor and outdoor hot & cold pipes, extensively adopted in mid-to-high-end renovation schemes, key infrastructure and large-scale industrial works.

2. Hydrophobic Stone Wool Pipe SectionsThis variant features robust hydrophobic and moisture-resistant properties. It resists moisture uptake and condensation, retaining full insulation performance in damp environments. Suitable for underground pipe trenches, pump rooms, humid service shafts, high-humidity factory sites and rainy regions, ensuring long-term stable operation of pipe insulation systems.

3. Standard Stone Wool Pipe SectionsCost-effective with stable baseline thermal, fire and acoustic performance. Designed for dry indoor service shafts, plant rooms and outdoor pipework fitted with complete external cladding. It is the general-purpose option for new-build projects.

4. Foil-Faced Stone Wool Pipe SectionsAluminium foil facing, including self-adhesive overlapping aluminium foil, can be customised for all Haochen pipe section types as an upgraded option. Self-adhesive variants are well suited to insulation retrofits on already installed pipework, applicable to indoor and outdoor hot and cold piping systems to fulfil thermal, fire and acoustic requirements. The aluminium foil surface reflects radiant heat, blocks vapour ingress, resists ageing and corrosion, improving the overall weathering resistance of the insulation system. Particularly suitable for high-temperature service, ventilation ducting, exposed outdoor pipework and moderately corrosive environments, it is the preferred upgrade to raise pipe protection standards.

2. Core Product Performance

1. A1 Non-combustible, Excellent High-temperature ResistanceThis product is an A1 non-combustible inorganic insulation material with continuous service temperature up to 600–650°C. Under high-temperature operating conditions, it will not burn, smoulder or drip molten fragments. No toxic fumes or hazardous gases are released upon exposure to open flame, delivering durable fire retardant performance. It effectively restricts flame spread, fully protecting pipework and surrounding equipment, and satisfies fire compliance requirements for building and industrial projects.

2. Low Thermal Conductivity, Long-lasting Stable Insulation & Energy SavingFine, densely packed fibres and evenly distributed internal pores give a stable thermal conductivity of 0.030–0.044 W/(m·K), delivering excellent heat retention. When applied to steam and heating pipelines, it markedly cuts heat loss during transmission, boosting heating efficiency and lowering energy consumption. For chilled water and low-temperature HVAC pipework, it prevents condensation, dripping and damp penetration at pipe surfaces, protecting walls, ceilings and associated equipment from moisture damage, with consistent insulation performance all year round.

3. High Hydrophobicity for Demanding Moist Conditions (Optional Grade)Hydrophobic stone wool pipe sections are treated with specialised waterproof modification. Its overall water repellency exceeds 98%, with moisture absorption below 5%. The material resists water absorption and structural collapse after wetting. When deployed long-term in exposed rainy areas, underground trenches, humid factories and pump houses, it avoids insulation failure, fibre degradation and pipe corrosion, suitable for a wide range of high-moisture complex piping environments.

4. Robust Mechanical Properties, Resistant to Long-term DeformationOne-piece cured forming delivers a dense, regular structure with good tensile and compressive strength, offering reliable support and close contact with pipe surfaces. After installation, joints fit tightly and remain securely fixed. It is not prone to hollowing, loosening, collapse or deformation over extended operation, ensuring strong structural stability and extending the service life of pipe insulation systems for continuously operating industrial and civil pipework.

5. Porous Structure for Acoustic Absorption & Vibration Reduction, Optimising Pipe Operating ConditionsThe natural 3D porous fibre structure delivers effective sound absorption, vibration damping and noise reduction. It attenuates low-frequency noise and vibration induced by fluid flow and equipment start-stop cycles, limiting sound transmission. It improves acoustic environments in plant rooms, commercial complexes, office blocks and residential buildings, suitable for pipe projects with strict noise control requirements.

3. Wide Application Scope

1. Industrial SectorWidely deployed across petroleum, chemical, metallurgical, marine, textile, power generation and thermal power industries. Used for thermal insulation, fire and noise control, and corrosion protection on industrial boilers, heating networks, process pipework and high-temperature equipment, adapting to heavy-duty high-temperature industrial piping conditions.

2. Civil Building SectorSuitable for HVAC systems, hot/cold water supply pipelines and district heating pipe insulation in commercial buildings and residential estates. Also applied for fire, thermal and acoustic insulation of service shafts, plant rooms, partition walls and suspended ceilings, compatible with most civil building pipe projects.

3. Universal for Full-range Pipe ConditionsCompatible for both cold and hot pipework, usable in concealed indoor service shafts, enclosed trenches and exposed outdoor pipework fitted with outer protective cladding. The pre-slit design provides exceptional adaptability for fast standardised installation on small and large diameter straight pipes, for both new construction and piping renovation projects.

4. Standard Product Dimensions

Pipe inner diameter: standard sizes Φ22mm–Φ530mm, custom sizes up to Φ1220mm available, covering all mainstream civil and industrial pipe diameters. Insulation wall thickness: standard range 30mm–200mm, customisable to meet anti-freeze, thermal, fire rating and site climate requirements. Product density: standard grades 80kg/m³–120kg/m³. Standard density can be selected for dry ambient civil applications; high-density grades are recommended for high-temperature, high-humidity and heavy-duty industrial applications for enhanced stability and safety.

5. Haochen Insulation Manufacturing Strength

Haochen Insulation is a physical manufacturer of basalt stone wool products integrating R&D, production and technical services. Equipped with automated stone wool production lines, we realise integrated manufacturing from raw basalt ore to finished pipe sections. A standardised quality inspection regime is implemented, with sampling testing of key performance indicators for every batch to guarantee consistent product quality. We offer flexible custom production. Beyond standard stone wool pipe sections, we produce multi-segment pre-slit and large-diameter irregular pipe sections to meet special requirements such as pre-buried pipeline retrofits. With years of experience serving industrial heating, HVAC and aged pipe energy-saving renovation projects, we provide samples, technical selection consultancy and on-site engineering support, catering to domestic and export orders, and reliably delivering high-quality pipe insulation materials.