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Expanded perlite is the waterproof heat insulation material that is adbestos-free and of high density with high quality perlite particles as the main material and made by cohering inorganic bond and reinforced fiber. Its highest service temperature is 650℃ with wuper low thermal conductivity and chloride. It has very good protection on peripheral steel pipes, being prefabricated to shape up and reistant to deform. It is not only able to have heat reservation function on pertrochemical industry pipelines and euipments, but also has very nice fire prevention and radiation resistance, and the manufacturer is the only one in domestic that has reached the ASTMC610 standard.

Item | Unit | ASTMC610 | Our standard | ||
Density | kg/m3 | ≤ 240 | ≤200 | ||
MAX service temperature | ℃ | 650 | 650 | ||
Therma conductivity | 38 ℃ | W/m.k | ≤0.069 | ≤0.067 | |
93℃ | ≤0.076 | ≤0.069 | |||
149℃ | ≤0.085 | ≤0.081 | |||
260℃ | ≤0.099 | ≤0.085 | |||
371℃ | ≤0.115 | ≤0.102 | |||
Flexural strength | Mpa | ≥0.31 | ≥0.39 | ||
Compressive strength | Mpa | ≥0.483 | ≥0.55 | ||
Weight loss by tumbling | % | ≤70 | ≤48 | ||
Moisture content | % | ≤10 | ≤4 | ||
Chlorine content | ASTM C795 | ASTM C795 | |||
Non-combustible property | ASTM E136 | ASTM E136 | |||
Item | Flat slab | Curved slab | Pipe cover |
Length (mm) | 600 | 600 | 610 |
Width (mm) | 300/150 | 150/100 | 150/100 |
Thickness (mm) | 25-100 | 25-100 | 25-100 |


Algous fossil, perlite particles, asbestos free

Expanded perlite has the lowest coefficient of thermal conductivity among the inorganic rigid insualtion materialss and has super strong insualtion effect so far.

When the density is similarm the strength of perlite is the highest, the compressive performance is better and not easy to bend among the inorganic rigid insulation materials

Its density and coefficient of thermal conductivity are lower, which can create better heat insulation effect.

Perlite can be made into elbow, tee fittings and easy to install, save manpower

product specifications and sections are based on the reasonable packing curing transit and simple installation, packed in carton and fixed in pallet


Expanded perlite products can be specifically used as thermal insulation layer of power plant boiler and turbine body, chemical plant cracking furnace and distillation column, steel plant heating furnace, drying oven, paper mill digesting kettle, also the thermal cover on the pipelines in these plants.

Huali is established in 1995 and headquater is located in Tianjin of China, with registered capital of 100 million RMB, 8 branches, more than 500 employee. We are not only a insulation manufacturer but also engineering company for installation service, insulation solutions as EPC insulation contractor. Since 2013, Huali developed into the LNG market and successfully finish several international projects of Ichthys, Yamal, KIPIC, and now is specilized in GCGV modules built, future Canada LNG and Arctic 2 etc. If you want to know more inforamtion about us or cooperate with Huali, you can search our web-site: www. hualiinsulation. com or contact us directly.
Q: Are you a manufacturer or a trading company ?
A: We are a manufacturer founded in 1995, located in Tianjin China, with 8 branches
Q: Can you accept neutral packing & OEM ?
A: Normally, our packing is carton with Huali logo , but we can accept the neutral packing and OEM. However, custom should pay the OEM packing charge.
Q: Can you provide the sample for free ?
A: We provide some samples for free, but the express charge should be bore by customer.
Q: What's the lead time?
A: 7-15 days after receipt of advanced payment
Q: What's the payment term?
A: 30% advanced payment and 70% paid prior to load by TT. and large amount can be paid by LC.
Q: How to contact you?
A: Contact us via email selena @ hualibw.com, or wechat / whatsapp +86 13102038097
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