Products Description
This flame-retardant LVL keel is a special structural keel developed by the factory for overseas prefabricated housing, light steel villas, modular buildings, apartment partition walls and ceilings, hotel prefabricated decoration, and fireproof commercial projects. It has undergone professional flame-retardant, smoke-suppressing, and fire-retardant treatment, making it difficult to ignite when exposed to fire, self-extinguishing when the fire is removed, and preventing the spread of fire. At the same time, it also has high strength, does not deform, and is environmentally friendly and odorless. It is suitable for prefabricated building wall frames, ceiling keels, floor secondary keels, and fireproof partition load-bearing frames, and is the core preferred base material for fireproof prefabricated projects.
PRODUCT DETAILS：
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Product Name |
Flame-retardant LVL keel for prefabricated buildings |
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Material |
New Zealand radiata pine, Russian larch, etc. |
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Length |
Up to 8.5 meters long Customized |
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Width |
90mm to 400mm Customized |
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Thickness |
35mm to 75mm Customized |
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Surface treatment |
Double-sided polishing / Anti-slip treatment, Customized Support |
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Certification Standards |
Complies with Australian and New Zealand Standards AS/NZS 4357.0. |
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Formaldehyde Emission |
Poplar products use E0 glue, while the rest use phenolic resin glue. |
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Design Style |
Modern |
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Feature |
water resistant, Anti-Corrosion, Eco-Friendly |
Application Scenarios of Prefabricated Buildings
Specialized Frame for Prefabricated Housing and Light Steel Villas
Specifically designed for overseas prefabricated wood structures, light steel hybrid villas, and modular assembled housing, serving as wall columns, partition joists, roof frames, and floor load-bearing secondary joists. Meets fire-retardant standards, boasts stable structural strength, and complies with both fire protection and structural standards for prefabricated buildings..
Fireproofing Materials for Commercial Buildings, Hotels, and Apartments
Widely used in prefabricated partition walls, fireproof ceiling joists, fireproof corridor partition frames, and fireproof base layers for commercial shop interior decoration in hotels, guesthouses, and apartments, balancing structural support and fire safety requirements.
Fireproofing Engineering for Public Buildings
Applicable to prefabricated fireproof partitions, ceiling load-bearing joists, and ventilation duct covering frames in public venues, office buildings, schools, and medical buildings, meeting high fire-resistance material specifications for public buildings.
top-selling product promoted by prefabricated construction
Meets flame retardant standards, adheres to dimensional norms, boasts high flatness, and offers excellent adaptability for mass assembly. Environmentally friendly and safe for human habitation, it is ideal for overseas prefabricated building companies, fire protection contractors, and building material wholesalers to promote and sell in large quantities.
Flame-retardant and fire-resistant properties and core advantages of the keel
Utilizing high-quality parallel-grain LVL substrate with a professional flame-retardant impregnation process, environmentally friendly flame-retardant agents are infused internally, resulting in flame-retardant, self-extinguishing, smoke-suppressing, and flame-not-spreading properties. The laminated structure boasts high strength, resistance to deformation, cracking, and warping, with stable moisture content. Prefabricated installation ensures uniform joint gaps, and the material is environmentally friendly, low in formaldehyde, and odorless, making it suitable for long-term use in enclosed living spaces.
High-strength, stable, and deformation-resistant substrate
Made with high-quality pine parallel-grain laminated LVL substrate, it possesses high bending and compressive strength and low internal stress. Prefabricated buildings are less prone to warping, twisting, and joint cracking over long-term use, ensuring a stable and reliable overall keel frame structure.
01
Deep flame-retardant impregnation ensures flame-retardant and self-extinguishing properties
After vacuum low-pressure impregnation with environmentally friendly flame-retardant agents, the flame-retardant components penetrate deep into the wood fibers, making it difficult to ignite upon contact with an open flame, slowing flame spread, and self-extinguishing after removal of the fire source, effectively preventing the spread of fire.
02
Smoke Suppression and Low Toxicity Enhance Fire Safety
The flame-retardant formula also suppresses smoke, producing minimal smoke and releasing no toxic or pungent fumes when exposed to high temperatures and open flames, meeting overseas fire safety standards for prefabricated public and residential buildings.
03
Strong Dry and Wet Stability for Prefabricated Installation
Precisely controlling the balanced moisture content adapts to changes in indoor and outdoor temperature and humidity in prefabricated buildings, preventing shrinkage and expansion, widening of keel joints, and deformation of the wall frame, ensuring assembly precision.
04
Environmentally Friendly, Low-Formaldehyde, Safe and Harmless in Enclosed Spaces
Both the flame-retardant agents and adhesives use environmentally friendly, low-formaldehyde formulas, with no pungent odor or harmful volatiles, making them safe and healthy for use in enclosed rooms of residences, hotels, and apartments, without affecting indoor air quality.
05
Flame-retardant production process and meticulous assembly workmanship
Employing a complete set of flame-retardant processes including veneer selection, constant temperature drying, flame-retardant vacuum impregnation, curing, automatic gluing and assembly, high-pressure hot pressing, flame-retardant shaping, precision cutting to size, and four-sided precision sanding, the entire process strictly controls the penetration of flame-retardant agents and structural stability. This results in high straightness of the keel, small dimensional tolerances, and neat edges, suitable for standardized assembly construction.
Superior veneer selection ensures a solid base: Strict selection of superior veneers with straight grain, uniform density, and no large rotten knots is used, eliminating inferior and soft raw materials to ensure uniform strength and flatness of the flame-retardant keel base structure.
Precise constant temperature drying locks in stable moisture content: Stepped constant temperature drying precisely controls the moisture content of the wood, preventing later deformation due to wet and dry conditions. It also creates the optimal wood porosity for uniform penetration of flame-retardant agents, improving the uniformity of the flame-retardant effect.
Vacuum-Impregnated Flame Retardant Deeply Penetrates: Utilizing a vacuum low-pressure impregnation process, the environmentally friendly flame retardant fully penetrates every fiber of the wood, ensuring consistent flame retardant performance throughout, rather than just a surface coating. This results in longer-lasting fire resistance.
Flame Retardant Curing Locks in Fire Resistance: After impregnation, a professional constant-temperature curing treatment ensures the flame retardant is stably fixed within the wood, preventing leakage and volatilization. The fire resistance rating remains unchanged over long-term use.
Precision Cutting and Sanding for Perfect Assembly: The finished product is precisely cut to size and finely sanded on all four sides for a smooth, flat finish. High straightness and minimal dimensional errors allow for tight, uniform interlocking during on-site assembly, resulting in high installation efficiency and a neat, finished appearance.
Standard Specifications and Customized Prefabricated Construction Services
We maintain a stock of mainstream standard sizes for prefabricated building keels, with complete thicknesses, widths, and lengths. We also support customization of non-standard sections, special lengths, and ultra-high flame retardant ratings. We can cut to size according to prefabricated building drawings and produce batches with standardized specifications to meet the standardized assembly needs of modular buildings.
Standard Prefabricated Keel Specifications in Stock
We maintain a year-round inventory of commonly used specifications for partition walls, ceilings, and wall frames, covering thicknesses of 25–100mm, widths of 50–200mm, and lengths of 2–8m. Regular prefabricated projects can be ordered and shipped directly.
Non-Standard Sizes Customized to Demand
We can customize special widths and thicknesses, ultra-long standard lengths, and irregularly shaped keels according to modular building design drawings to meet personalized prefabricated structural design needs.
Flame Retardant Rating Upgrades Available
We can upgrade to multiple flame retardant levels, from ordinary to high flame retardant, according to overseas engineering fire protection standards, to adapt to different public and residential building fire protection standards.
Bulk Projects with Standardized Pre-cut Dimensions
We undertake bulk orders for prefabricated entire buildings and villa clusters, pre-cutting to uniform specifications and lengths for direct on-site assembly, eliminating the need for secondary cutting and significantly shortening the assembly period.
Flame Retardant and Environmentally Friendly Certifications & Export Testing Standards
Flame retardant ratings are tested and certified by professional institutions, meeting international human settlement standards for low formaldehyde content and environmental friendliness. Each batch undergoes random sampling for flame retardant performance, structural strength, moisture content, and straightness testing. A complete set of documents, including flame retardant test reports, environmental certifications, factory quality inspection reports, and fumigation clearance documentation, is available to meet project acceptance and customs export requirements.
why choose our products
Professional Flame Retardant Testing and Compliance: Each batch undergoes flame retardant combustion performance testing. All indicators comply with overseas fire-resistant building material specifications and can be used for project fire safety approval and acceptance.
Environmentally Friendly Flame Retardant Formula: Uses environmentally friendly halogen-free flame retardant agents, free of harmful heavy metals and toxic residues, ensuring a safe living environment and preventing indoor air and surrounding ecological pollution.
Multi-Dimensional Quality Inspection for Stable and Controllable Quality: Random sampling tests are conducted on flame retardant effect, flexural strength, bonding strength, moisture content, and appearance straightness. Multiple quality control measures ensure consistent and stable quality across batches of projects.
A complete set of qualification reports supports project bidding. We can provide flame retardant testing certificates, environmental certifications, factory quality inspection reports, and enterprise system qualifications, facilitating bidding, project approval, and final acceptance for prefabricated engineering projects.
Bulk Supply and Foreign Trade Support Services
Our factory has a dedicated flame-retardant keel production line in full production, with ample capacity and stable inventory, capable of handling large-scale prefabricated building container orders. Direct supply from the source ensures high cost-effectiveness, and we support annual price lock-in partnerships. Reinforced export packaging protects against moisture and impacts, ensuring no deformation during long-distance transportation.
Dedicated Production Line for Stable Supply
Our independent flame-retardant LVL keel production line operates year-round with ample inventory. Even with concentrated orders during peak seasons for prefabricated buildings, we can maintain stable production and on-time delivery.
Factory Direct Supply Benefits Engineering Channels
Direct supply from the manufacturer eliminates middlemen markups, offering preferential prices to prefabricated building companies and building material wholesalers, ensuring sufficient profit margins for market promotion.
Professional Foreign Trade Technical Support
We can provide flame-retardant parameters, selection advice, and prefabricated installation reference solutions, assisting clients with project design and engineering quotations.
The product is well protected by special packaging for ocean shipping
It is wrapped with a waterproof membrane, paper corner protectors and edge protectors, and reinforced with fumigated wooden pallets. It is moisture-proof, impact-proof, and deformation-proof for ocean shipping. The keel is straight and intact upon arrival and can be directly assembled and constructed.
FAQ
Q: Q. If your company is reliable ?
A: A: Founded in 2009,company covers an area of 52,000 square meters,more than 300 employees, including nearly 20 scientific researchers.Powerful LVL manufacture in China.
Q: Q.How long is your delivery time?
A: A: For full container, factory lead time About 20~35 days.
Q: Q: what's your payment terms and trade terms?
A: A: Accepted Delivery Terms: FOB, CFR, CIF, CIP, FCA, CPT, Express Delivery, DAF.
Q: Q: How can you promise quality
A: A: It complies with the Australian and New Zealand standards AS/NZS 4357.0. Some products have passed JAS-ANZ certification, and the formaldehyde emission level reaches E0 level certification, FSC certification can also be provided.
Q:How about the shipping fees?
A: For large quantities of products, ocean freight is usually the best option. The price of ocean freight depends on the destination port and the current ocean freight rates. Please contact us and we will provide you with a better quote based on the actual situation.
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