Grading Rules

Grading Rules

H20 BEAMS inspections and QC checklists

H20 BEAMS Doubl-T-iron (I-beam) is a modern building material. It has several advantages over the other elements of the overlapping installations made by reinforced concrete. Doubl-T-iron (I-beam). I-beams made of solid wood with shelves, where there are the grooves, and rack of plywood or carpentry plate located in these grooves. I-beams are …

Read More »

H20 Concrete Formwork Beam inspections and QC checklists

H20 Concrete Formwork Beam inspections and QC checklists http://www.bulow-bennet.com/en/poutrelle-de-coffrage-h20/ H20 Concrete Formwork Beam  H20 concrete formwork beams of SPRUCE and FIR. The wing is made of carefully selected quality wood.  The core consists of a 3-layer panel, which ensures the stability of the beam and allows it to withstand all weather conditions.  Wing assemblies …

Read More »

PLYWOOD QUALITY CLASSES

PLYWOOD QUALITY CLASSES  https://www.woodproducts.fi/content/plywood The choice of quality class of birch veneer-surfaced plywoods according to application (in brackets, the other generally used quality class) is presented in the table below. Birch veneer-surfaced plywoods A (E) flawless special quality (only available to a limited extent) B (I) lacquered or waxed surface …

Read More »

Maintenance methods of plywood

Maintenance methods of plywood 1. Plywood furniture should be placed smoothly to prevent damage to mortise structure. 2. Plywood should not be exposed to sunlight in order to prevent deformation. 3. Should not be placed in a humid and unventilated place, otherwise vulnerable to damp expansion and deterioration. 4. Wardrobe …

Read More »

Factors Influencing the Quality of Plywood

Factors Influencing the Quality of Plywood 1. Adhesive quality The performance of synthetic resin adhesives for adhesives, the compounding of various components and the blending process are presented. In recent years, a lot of research work has been done on the components and blending technology of plywood in China, which …

Read More »

Defects of plywood

Defects of plywood 1. Low bonding strength: mainly due to the poor quality of the glue. If the hot pressing conditions are not well controlled, such as low temperature, insufficient pressure and too short rubber pressing time, such defects will also occur. Excessive moisture content, insufficient glue content, poor veneer …

Read More »