Wholesale Ac Pipe Insulation Foam Factory & Pricelist

Primary Thermal Insulation Product Portfolio

Engineered for extreme temperature resistance, condensation prevention, and noise dampening. Explore our core wholesale range below.

Flexible Ultra Low Temperature Insulation

Global Industrial & B2B HVAC Insulation Market Dynamics

The global demand for high-performance elastomeric insulation materials is shifting toward advanced energy efficiency. Industrial chillers, VRF (Variable Refrigerant Flow) systems, and multi-split AC setups require materials capable of minimizing heat gain and preventing surface condensation. As global climate standards tighten (such as ASHRAE 90.1 and European CE directives), traditional open-cell materials are being phased out in favor of 98%+ closed-cell NBR/PVC elastomerics.

In addition to standard refrigeration, cryogenic and ultra-low temperature applications (e.g., liquid natural gas terminal piping, chemical reactors, pharmaceutical storage) present challenges. Standard insulation materials crack or fail under thermal stress. The engineering of modified di-olefin and elastomeric matrix structures enables operational stability in environments ranging from -200°C to +105°C.

600,000 m³

Annual Production Capacity

98%+

Closed Cell Ratio

66+

Countries Exported

40+ Years

Industrial Heritage

Historical Manufacturing Milestone Jinwei Group

Our Industrial Heritage: Kingflex & Jinwei Group

Established by the Jinwei Group, which boasts a rich history spanning over 40 years since its inception in 1979, Kingflex has grown to become a leading name in thermal insulation. Jinwei Group was the pioneer manufacturer of thermal insulation materials north of the Yangtze River, laying the groundwork for engineering excellence.

Today, Kingflex Insulation Co., Ltd. stands as a professional manufacturing and trading combo. Our research, development, and production facility is located in Dacheng, China—widely recognized as the capital of green building materials. Focusing on energy saving and consumption reduction as our core operational philosophy, we provide end-to-end consulting, R&D, manufacturing, installation guidance, and post-sale technical services to major infrastructure projects globally.

Manufacturing Powerhouse: Automation & Scale

Our facility operates 5 large automatic extrusion and assembly lines. With our automated processes, we produce consistent cell sizes, density, and wall thicknesses across batches. This technological foundation yields an annual capacity exceeding 600,000 cubic meters.

Because of our stringent production standards, Kingflex is designated as a certified manufacturing supplier by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China. This backing allows us to support large-scale national and international contracts smoothly.

Our workforce comprises 230 skilled production professionals, supported by 8 R&D engineers focused on improving thermal properties, fire ratings, and low-temperature durability, along with 6 international sales specialists to handle global trade compliance and shipping.

Material Science & Technical Specifications

Kingflex elastomeric foam insulation is engineered to meet international commercial standards. Review our verified performance metrics below.

Property / Characteristic	NBR/PVC Rubber Foam Specs	Test Standard / Certification
Thermal Conductivity (λ)	≤ 0.034 W/m·K at 0°C	ASTM C518 / ISO 8301
Moisture Resistance Factor (μ)	≥ 10,000 (Highly resistant to vapor transmission)	BS EN 12086
Flame Retardant / Fire Rating	Class 0 / Class 1 / V-0 self-extinguishing	BS 476 Part 6 & 7 / UL94 / GB 8624
Operational Temperature Range	-40°C to +105°C (Standard) \| -200°C (Cryogenic Grade)	ASTM C411
Foaming Density	40 - 55 kg/m³ (Optimized cell structure)	ASTM D1622
Compression Resilience	≥ 80% recovery rate	GB/T 6669
Water Absorption Rate	≤ 0.2% by volume	ASTM C209

Rubber Foam vs. Rock Wool: Choosing the Right Insulation

B2B buyers often need to choose between elastomeric rubber foam and rock wool (mineral wool).

Structure: NBR/PVC has a closed-cell matrix that blocks moisture penetration. Rock wool has an open, fibrous structure that can absorb water if its vapor barrier is compromised.
Application Suitability: Rubber foam is ideal for chilled water lines, VRF systems, and cryogenic processes to prevent condensation. Rock wool is better suited for high-temperature industrial steam lines (above 200°C) and fireproofing.
Flexibility: Elastomeric foam fits complex pipe geometries easily, reducing installation labor.

Rubber Foam vs Mineral Rock Wool Material Comparison

Detailed Product Lines & Parameters

Below are the standard manufacturing dimensions for our main product lines: Black Rubber Foam Sheets & Pipes.

Black Rubber Foam Insulation Sheet Roll

Material: Premium NBR/PVC Blend

Thickness: 6mm - 50mm

Density: 40 - 55 kg/m³

Service Temperature: -40℃ to 105℃

Key Advantages:

1. Foams evenly with a >98% closed-cell rate.

2. Low moisture absorption and stable thermal conductivity.

3. Flex recovery exceeding 80%.

4. Self-extinguishing fire-retardant properties.

Black Rubber Foam Insulation Pipe

Material: Premium NBR/PVC Blend

Thickness: 9mm - 40mm

Inner Diameter (ID): 6mm - 114mm

Density: 40 - 55 kg/m³

Key Advantages:

1. Professional spray coating ensures uniform coverage.

2. Helps prevent condensation-related piping corrosion.

3. Low thermal conductivity preserves HVAC cooling energy.

4. Flexible material cuts down on installation labor times.

Comprehensive Commercial Application Scenarios:

Kingflex products are used across diverse sectors: Central Air Conditioning ductwork, HVAC water supply protection, Industrial Plants (processing lines and storage tanks), Rail Transit and Cold Chain Logistics, Chemical pipelines, and large-scale public facilities like hotels, malls, and hospitals.

HVAC Pipe Insulation application example

Air conditioning copper tube insulation sleeves

Compliance & Quality Management Systems

When supplying international engineering projects, compliance is essential. Kingflex products undergo verification testing to meet key regional construction and environmental codes.

Our certifications include:

BS 476 (Part 6 & 7): Class 0 and Class 1 ratings for fire propagation and surface spread of flame.
UL94: Certified V-0 class for flame retardancy, ensuring self-extinguishing behavior.
REACH & RoHS: Compliant with chemical safety and environmental restrictions, free from CFCs and heavy metals.
ASTM Ratings: Standardized thermal conductivity and water vapor transmission performance.

B2B Communication & Global Procurement Support

We work closely with global procurement officers, HVAC distributors, and engineering firms to provide clear specs, pricing, and shipping logistics.

Client Inquiry regarding Thickness and density of foam rolls

Inquiry on Density Specifications

Technical parameter validation by European construction firm

Thermal Conductivity Verification

Pricelist and FOB port quote negotiations

Bulk Quote & Port Logistics

OEM Branding & Packaging Details

Post-installation feedback on flexibility and dimensional stability

Post-Installation Field Review

Expert FAQ: HVAC & Industrial Insulation

Find answers to common questions about thermal performance, installation standards, and sourcing logistics.

Q1: What is elastomeric rubber foam insulation primarily used for?

A1: It is primarily used for HVAC ducts, air conditioning piping, commercial building thermal insulation, industrial cold insulation systems, and acoustic dampening across mechanical rooms.

Q2: Is Kingflex rubber foam insulation fire resistant?

A2: Yes. Our products include flame-retardant properties that meet international building standards, including BS 476 Class 0, Class 1, and UL94 V-0 certifications.

Q3: What is the difference between rubber foam and rock wool insulation?

A3: Rubber foam is a flexible, closed-cell, moisture-proof material ideal for HVAC and refrigeration lines to prevent condensation. Rock wool has an open, fibrous structure with high temperature resistance, making it suitable for industrial steam pipes and structural fireproofing.

Q4: Do you provide customized insulation products and OEM options?

A4: Yes. We offer OEM and ODM services. We can adjust the thickness, inner diameter, color, self-adhesive backing, and outer protective layer (such as Alu foil) to fit your project specifications.

Q5: What certifications do your products hold?

A5: Our materials are certified under BS 476, CE, REACH, RoHS, UL94, and ASTM standards, ensuring compliance with global construction and environmental regulations.

Q6: Are Kingflex products traceable?

A6: Yes. Every production batch is coded to track raw material inputs, curing temperatures, and QC test records, ensuring traceability for commercial projects.

Q7: What thickness of rubber foam insulation rolls can you manufacture?

A7: We produce sheet rolls in thicknesses ranging from 6mm to 50mm, with custom roll widths and lengths available on request.

Q8: What is the expected service life of Kingflex rubber pipe insulation?

A8: Under normal operating conditions and proper installation, Kingflex rubber foam insulation typically lasts 10 to 15 years in commercial indoor applications.

Q9: How does the closed-cell structure prevent corrosion under insulation (CUI)?

A9: Because the closed-cell structure is highly resistant to water vapor (with a high μ-factor), it prevents humidity from reaching the metal pipe surface, reducing the risk of corrosion under insulation.

Q10: What factors influence wholesale pricing in the pricelist?

A10: Pricing varies based on raw material costs, the specified wall thickness, custom density requirements, special fire ratings, self-adhesive additions, and order volume. Contact us for a current B2B price quote.