Grading Rules

Grading Rules

Birch Throughout Plywood Inspections and QC checklists

Birch Throughout Plywood Inspections and QC checklists 在胶合板行业里,有一些创新型的企业,一直在努力的学习国外的胶合板制作工艺,提高着自己的产品品质,一直不被行业在意的全桦木胶合板就是其中之一。因为它的生产复杂,原材料几乎是全靠进口,极易受到原材料的限制,加之桦木密度大,不易加工,容易出现各种价格缺陷。而且其价格昂贵,所以在国内普通市场很难推广。 In the plywood industry, some innovative enterprises have been working hard to learn the production process of plywood abroad and improve the quality of their products. The full birch plywood which has not been cared about by the industry is one of …

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Description and limitations of plywood defects

Description and limitations of plywood defects   Description of deficts as per GOST 30427 E grade plywood face veneers I grade plywood face veneers II grade plywood face veneers II grade plywood face veneers IV grade plywood face veneers 1.Pin knots Not allowed Max 3 per M2 allowed Allowed Allowed Allowed   2.Sound lights and/or dark knots     Not …

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Classification and dimensions- general use plywood

Classification and dimensions- general use plywood Plywood is subdivided into grades based on the following: appearance of face veneers, glue bond, the degree of moisture resistance of the bond, and if sanded or not. Control methods 6.1. Selection of samples for strength and mechanical tests are done in accordance with GOST …

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Birch Throughout plywood Technology and production process

Birch Throughout plywood Technology and production process Plywood is a board made from thin sheets of construction veneers which are bonded in layers to create a strong and stable board. Veneers used for plywood construction are cut from a log for constructional or decorative purposes. The two most common methods used for veneer production are called saw and rotary …

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