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Birch plywood
Product Overview
Engineering the Backbone of High-Load Architectural Systems
Structural Grade Birch Plywood is a high-performance engineered wood product designed specifically for applications where mechanical strength, stiffness, and load-bearing capacity are critical. Unlike standard decorative plywood, structural grade panels are manufactured to meet rigorous international standards (such as EN 13986 or PS 1), ensuring predictable performance under stress. The secret lies in the 100% full-birch core, which features a higher density of growth rings and fine fibers compared to softwoods. This results in superior modulus of elasticity (MOE) and modulus of rupture (MOR) values, making it the preferred substrate for heavy-duty flooring, roofing diaphragms, and structural bracing in modern timber-frame construction.
The manufacturing process for structural grade birch emphasizes internal integrity. Every veneer layer is rotary-peeled to precise tolerances and sorted to ensure that knots and natural imperfections do not compromise the panel's overall strength. These layers are then cross-laminated and bonded with Water Boil Proof (WBP) phenolic adhesives. This cross-ply construction effectively "neutralizes" the natural expansion and contraction of the wood, providing dimensional stability that is essential for precision engineering projects. Whether used in high-traffic mezzanine floors or as the primary web material for I-joists, these panels offer a high strength-to-weight ratio that allows architects to reduce material mass without sacrificing safety.
In the commercial sector, reliability is paramount. Structural Grade Birch Plywood is prized for its exceptional screw-holding power and impact resistance. Unlike composite boards or softwoods, birch does not crumble under concentrated point loads, ensuring that fasteners remain secure even in dynamic environments like transport flooring or industrial warehouses. The smooth, sanded surface also serves as an excellent base for secondary coatings, fire-retardant treatments, or structural laminates, providing a versatile foundation for complex building envelopes and specialized industrial components.
At the intersection of traditional woodworking and modern structural science, our panels provide the confidence needed for ambitious designs. Each batch is subjected to rigorous quality testing, including shear strength and moisture resistance evaluations. By choosing structural grade birch, engineers and builders are investing in a material that offers longevity, safety, and uncompromising performance in the most demanding architectural environments on the planet.
EN 13986 CertifiedHigh MOE/MOR RatingFull Birch CoreWBP Phenolic BondLoad-Bearing Optimized
Technical Specifications
| Standard Compliance | EN 13986 / EN 636-3 |
| Core Material | 100% Full Birch Hardwood |
| Bending Strength (MOR) | > 50 MPa (Longitudinal) |
| Elasticity (MOE) | > 9,500 MPa |
| Thickness Range | 6mm to 40mm |
| Glue Type | WBP (Phenolic Resin) |
| Density | 700kg - 720kg/m³ |
Structural Applications
- Industrial Mezzanine Flooring
- Structural Roof and Wall Sheathing
- Webs for Engineered Wood I-Joists
- Heavy-Duty Warehouse Racking
- Commercial Vehicle Chassis Support
Core Competitive Strengths
- High Strength-to-Weight: Stronger than steel by weight.
- Dimensional Stability: Minimal movement in varying humidity.
- Fastener Retention: Superior grip for structural screws/bolts.
- Uniformity: Predictable engineering values for CAD design.
Trade Summary
| MOQ | 1x20GP Container |
| Lead Time | 20-25 Days |
| Packaging | High-Strength Steel Banding |
| Certifications | CE, FSC, ISO9001 |
| Face Grades | BB/BB, BB/CP, CP/CP |
| Standard Sizes | 1220x2440 / 1525x3050mm |
About Us
Tianma Lvjian is China Structural Grade Birch Plywood Panels Manufacturers and Wholesale Structural Grade Birch Plywood Panels Factory. With 27 years of professional experience in the research, manufacturing, and sales of Birch Plywood, we adhere to the principles of safety, practicality, environmental friendliness, and aesthetics. Our products consistently meet the European standard of E1, ensuring high levels of environmental safety. We use pure birch wood as the main material and continuously innovate to enhance the design and structure of our birch plywood. We also emphasize surface treatment techniques, delivering environmentally friendly, performance-stable, and visually unique new products to the market and our valued customers.
Honor
ICTT-22019-TIANMA-LVJIAN-(NANTONG)-WOOD-STRUCTURE-TECHNOLOGY-CO.,-LTD
TJIN2412003437PL02-1_EN
TJIN2412003437PL01-1_EN
(65073)VCP-12177
(65072)VCP-12176
CE-EN 13986
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40000m³Safety stock -
65000m³Annual production capacity -
20+COUNTRIESExport to over 20 countries -
20+YEARSdedicated experience in the wood industry -
200+Highly qualified and technically competent personnel
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Logistics and Financial Terms
Structural panels are high-density and heavy. We optimize container weight limits to provide the most cost-effective shipping rates. Pallets are reinforced with extra-thick base boards and protected by moisture-proof covers for international sea transit. Payment is typically 30% T/T deposit and 70% against B/L. We provide all necessary technical certificates for building code compliance upon request.
Material Comparison
- Vs. Softwood Plywood: Birch provides nearly double the bending strength and significantly better impact resistance.
- Vs. OSB Grade 3: Much higher MOE and MOR, with vastly superior performance in concentrated load tests.
- Vs. Solid Timber: Plywood eliminates natural defects like shakes or splits and provides uniform strength in two directions.
Structural Composition
The multi-ply construction consists of numerous thin veneers (1.4mm each). The alternating grain direction ensures that the panel has balanced strength, preventing the splits common in solid lumber.
Using 100% Birch throughout the core ensures no "soft spots," which is critical when the panel is used as a structural diaphragm to resist lateral wind or seismic forces.
Green Building Commitment
Our Structural Grade Birch Plywood supports sustainable carbon sequestration by locking CO2 into the building's structure for decades. By providing a long-lasting, high-performance alternative to energy-intensive materials like steel or concrete, we help reduce the total embodied carbon of construction projects. All timber is sourced from FSC-certified northern forests.
Frequently Asked Questions
Q: What makes plywood "Structural Grade"?
A: It must be manufactured to specific standards (like EN 636-3) that guarantee its mechanical load-bearing properties.
Q: Can I use this for exterior roofing?
A: Yes, as long as it has WBP glue and is covered by a waterproof membrane (bitumen, etc.).
Q: Is birch stronger than pine for flooring?
A: Yes, birch is a hardwood and much denser, providing better resistance to heavy foot traffic and furniture indentations.
Q: What is the benefit of the high ply-count?
A: More layers create a more stable, stiffer board that is less likely to warp over time.
Q: Does it come with a certificate of performance?
A: Yes, we provide CE and EN 13986 documentation for structural compliance.
Q: Can I cut it on-site?
A: Absolutely, it can be worked with standard circular saws and drills.
Q: Is the glue waterproof?
A: Our structural grade uses WBP phenolic glue, which is fully weatherproof and boil-proof.
Q: What thickness is best for mezzanine floors?
A: Typically 18mm or 21mm depending on the joist spacing and expected load.
Q: Can it be used for I-joist webs?
A: Yes, its high shear strength makes it an ideal web material for engineered wood joists.
Q: Is it termite resistant?
A: While birch is not naturally resistant, the phenolic glue acts as a deterrent; specialized treatments are available if required.
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