5'x5'X18MM BIRCH FLOORING GRADE PLYWOOD
Russian Birch plywood is manufactured from the highest quality birch wood veneers. The layers are glued together so that adjacent plies have their grain at right angles to each other for greater strength. Number of plies depends on plywood thickness, and is running perpendicular. Birch veneer is glued with urea - formaldehyde adhesive resin KF - FE, formaldehyde emission meets requirements of the E0 class. Gluing classes Bonded with urea-formaldehyde resin meets the requirements of E1 formaldehyde emission. Thickness (mm): 3, 4, 5, 6, 8, 9, 12, 15, 18, 21, 24 Sizes (mm): 1525x1525 Grades B - The highest quality plywood, sanded, with no discoloration and external defects, for painting BB - High-quality plywood, sanded, with only minor trim and healthy knots, varnishing and painting CP - The standard quality plywood, sanded, larger defects, corrected insertions, more defects than in the class BB C - The lowest grade plywood, uncut, holes and knots Meets standards. Determined above quality grades affects only exterior veneer and do not affect the strength parameters of the plywood.
Description
Technical Parameters
Birch Plywood
Birch Plywood panels comprise at least three layers of thin wood bonded together with an adhesive. Each 'ply' is usually orientated at a right angle to the adjacent layer in order to improve strength and reduce the probability of shrinkage.
The outer layers of the board are commonly referred to as the 'face' and 'back' and are graded based on quality. The intermediate layers are collectively known as the 'core'.Our birch plywood are available in a wide variety of thicknesses, and sizes.
Thickness: 0.8mm 1.2mm 1.5mm 3mm 4mm 6mm 6.5mm 9mm 12mm 15mm 18mm 21mm 24mm 27mm 30mm 32mm 35mm 40mm 45mm 50mm
Panel Sizes
Metric: 1220 x 2440 - 1220 x 2745 - 1220 x 3050 - 1220 x 3660
Imperial: 4ft x 8ft - 4ft x 9ft - 4ft x 10ft - 4ft x 12ft
Metric: 1525 x 2440 - 1525 x 2745 - 1525 x 3050 - 1525 x 3660
Imperial: 5ft x 8ft - 5ft x 9ft - 5ft x 10ft - 5ft x 12ft
Large Press: 2150 x 3340 - 2150 x 3850
Other sizes available with scarf-jointed panels
Grades: B - S - BB - WG - CP - C
Bonding: EN314-2 class 2 (previously WBP: Weather and Boil Proof) dark brown glue,MR (moisture resistant) interior, colourless glue
Moisture Content: 10% (+/- 2%) to EN315 and DIN 68705
Formaldehyde In accordance with the standard EN 13986 the formaldehyde emission meets the Class E1 requirements (test method EN 717 Part 2)
Packing (sheets per pack)
Russian 1525 x 1525 (5ft x 5ft) - 2440 x 1220 (8ft x 4ft) - 1525 x 3050 (5ft x 10ft) - 1500 x 3000
4mm (100) - 6.5mm (65) - 9mm (44) - 12mm (33) - 15mm (26) - 18mm (22) - 21mm (19) - 24mm (17) - 27mm (14) - 30mm (13) - 35mm (12) - 40mm (10)
European 2440 x 1220 (8ft x 4ft) and larger
4mm (190) - 6.5mm (140) - 9mm (100) - 12mm (50) - 15mm (40) - 18mm (35) - 21mm (30) - 24mm (25) - 27mm (22) - 30mm (20) - 35mm (17) - 40mm (15) - 45mm (13) - 50mm (12)
Plies
The number of laminations - 1.4mm thick veneers, cross bonded
4mm (3 ply) - 6.5mm (5 ply) - 9mm (7 ply) - 12mm (9 ply) - 15mm (11 ply) - 18mm (13 ply) - 21mm (15 ply) - 24mm (17 ply) - 27mm (19 ply) - 30mm (21 ply) - 35mm (25 ply) - 40mm (29 ply) - 45mm (33 ply) - 50mm (37 ply)
Hot Tags: 5'x5'x18mm birch flooring grade plywood, China 5'x5'x18mm birch flooring grade plywood manufacturers, factory
B Grade
The highest quality plywood/ slight discolouration permitted/ no external defects/ pin knots permitted/ maximum 3 repair patches (plugs) per M2
BB Grade
High-quality plywood/ Predominantly unfilled and sanded veneer/ All major defects replaced with wood patches
A restricted number of solid minor knots are admissible along with small, closed splits/ Some brown stain permitted/ Allow for colour variations.
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