A combo grid membrane is a filtration membrane with varying pore sizes for effective separation of particles from liquids or gases. Its applications include water treatment, wastewater management, and industrial filtration processes. This design improves efficiency in tailored separation.
Farnam Baspar’s Combo Grid Geomembrane, featuring advanced technical specifications, offers a unique combination of strength and flexibility. With its key features and advantages, this product provides an ideal solution for construction and environmental projects, manufactured according to the highest international standards to ensure lasting quality and durability.
Farnam Baspar’s Combo Grid Membrane is a composite system consisting of needle-punched geotextile bonded with a polypropylene (PP) geogrid, designed for soil reinforcement, separation, and structural enhancement in subgrade and base applications. It offers high tensile strength, controlled permeability, and excellent chemical resistance, making it a reliable solution for civil, road construction, and ground stabilization projects. The following table outlines its key technical specifications.
| PROPERTY | VALUE |
|---|---|
| MATERIAL | Polypropylene (PP) |
| THICKNESS | 2 – 4 mm |
| WIDTH | 4.0 m |
| TENSILE STRENGTH | ≥ 20–30 kN/m (EN ISO 10319) |
| WATER PERMEABILITY | ≥ 10⁻³ m/s (EN ISO 11058) |
| CHEMICAL RESISTANCE | Excellent (acids, alkalis, salts) |
| UV RESISTANCE | Moderate (short-term exposure) |
Farnam Baspar’s Combo Grid Sheets are manufactured and tested in accordance with globally recognized standards for geosynthetics, soil reinforcement, and polymer-based materials. Applicable standards include:
The cost of combo grid per square foot can vary depending on the specific application and requirements. You can contact our experts to obtain the price of blue-black geomembrane in Iran.
Farnam Baspar is a leading Iranian manufacturer of geosynthetic solutions with over 20 years of experience in supplying high-performance materials for infrastructure, environmental, industrial, and agricultural projects. As the foremost combo grid manufacturer in Iran, the company is renowned for offering products of the highest quality and competitive prices in global markets, providing key advantages to its customers.
Frequently asked questions
How strong is combo grid?
The strength of combo grid can vary depending on several factors, such as the specific product, material, and application. However, the general range for the tensile strength of combo grid is from 40 kN/m to 200 kN/m.
When should combo grid be used?
How is combo grid installed?
How do I choose the right combo grid liner for my project?
Choosing the right Combo Grid (a composite of geogrid and geotextile) for your project depends on the application type, geotechnical conditions, and design requirements.
Combo Grids must be resistant to UV radiation, temperature fluctuations, and chemical agents in the soil, especially in long-term applications.
Combo Grids should be tested and verified in accordance with international standards such as:
In summary, selecting the right Combo Grid requires careful consideration of soil conditions, loading, and the need for simultaneous reinforcement and filtration, supported by expert technical consultation.
What is the lead time for combo grids?
The lead time for Farnam Baspar’s Combo Grids depends on several key factors:
If certain standard strengths and dimensions are available in stock, delivery can typically be arranged within a few business days.
Since Combo Grids are often manufactured according to project-specific requirements — such as the tensile strength of the geogrid and the type/weight of geotextile (woven or nonwoven) — custom production generally requires 3 to 6 weeks.
Large-scale orders may require additional time for production scheduling and logistics coordination.
For international projects, shipping times and customs clearance must also be taken into account.
In general, it is recommended to place Combo Grid orders several weeks prior to the planned installation date to avoid potential delays.
Do you offer a warranty on combo grid?
Yes, Combo Grid, which is a combination of geogrid and geotextile, is supplied with a comprehensive warranty. This warranty covers both product quality and long-term durability, reflecting our commitment to reliable performance in various projects.
Guarantees the quality of raw materials, structural uniformity, tensile strength, and compliance with international standards such as ASTM and ISO.
Depending on the type of project and operating conditions, the warranty period typically ranges from 5 to 10 years.
By offering a comprehensive warranty on Combo Grid, we ensure that clients have full confidence in the product’s long-term stability and performance, allowing projects to be executed with maximum reliability.
Are your combo grid membrane sheets resistant to chemicals?
Yes, Combo Grid, made from a combination of geogrid and geotextile, is manufactured using high-quality polymers that are resistant to a wide range of chemicals. This ensures durability and reliable performance in various soil and environmental conditions, even in the presence of acids, alkalis, and salts.
Combo Grid demonstrates strong resistance against corrosive chemicals and environmental degradation factors.
Thanks to the stability of the polymers used, the product maintains its performance even under long-term exposure to chemical compounds.
Its chemical resistance makes Combo Grid an ideal choice for projects in industrial environments or soils with specific chemical compositions.
How long do Farnam Baspar’s combo grid last?
Farnam Baspar’s Combo Grids are manufactured using high-quality polymers and advanced production technology, ensuring exceptional durability and long service life.
Under normal soil and operating conditions, the service life of Combo Grid is typically estimated to exceed 50 years.
Thanks to its high resistance to tensile loads, deformation, and stability against chemical agents and environmental factors, the product maintains reliable performance over time.
This long-term durability makes Farnam Baspar’s Combo Grid a cost-effective and reliable solution for infrastructure and civil engineering projects with extended design lifespans.
Is special equipment required for installation combo grid?
No, the installation of Combo Grid does not require any special or complex equipment. It is designed to be simple and cost-effective to install.
Common construction tools such as industrial scissors or cutters for trimming, and metal or plastic pins for fixing, are generally sufficient.
Combo Grid is placed on the prepared subgrade (soil, sand, or base material) and then covered with backfill or subsequent layers.
Due to its easy installation and the lack of need for heavy or specialized equipment, Combo Grid reduces construction costs and accelerates project progress.
What is your return policy for combo grids?
Yes, we have a clear return policy for Combo Grids to ensure customer confidence.
Products can be returned if they have manufacturing defects or do not match the order specifications.
Returns are generally accepted within 30 days of delivery, provided the product is unused and remains in its original packaging.
Depending on the customer’s request, defective or incorrect products can either be replaced or refunded.
Our transparent and flexible return policy reflects our strong commitment to quality and customer satisfaction.
How is combo grid liner shipped, and what are the delivery options?
Combo Grid is shipped with proper and standardized packaging depending on the project requirements and order volume, ensuring that the product remains protected during transportation.
Combo Grid is typically delivered in rolled form, wrapped with protective plastic or geotextile covering to safeguard against moisture, dust, and mechanical damage.
The product can be transported via ground shipping (trucks or containers), or for international projects, through sea if required.
Depending on the customer agreement, delivery can be arranged as FOB, CIF, or directly to the project site. Delivery time is determined by order size and destination.
Our flexible packaging and delivery options allow clients to choose the most suitable solution based on project conditions and cost efficiency.
