Specifications Of Square Timber

The following is a detailed classification and description of square timber specifications:

1. Common specifications classified by purpose
Square timber for construction

Cross-sectional dimensions: 40×75mm, 45×90mm, 50×100mm, etc., thickness is usually 30-50mm, width is between 75-100mm.
Length: mostly 4 meters (such as 4000mm), there are also other lengths such as 2 meters, 3 meters, etc.
Features: used for formwork support, roof truss structure and other load-bearing scenes, attention should be paid to anti-corrosion and anti-insect treatment.
Square timber for interior decoration

Cross-sectional dimensions: 20×20mm, 20×30mm, 30×40mm, 40×60mm, etc., thinner thickness (18-45mm).
Purpose: ceiling keel, partition frame, etc., such as 30×50mm specifications are often used for wooden keel.
Square timber for furniture

Cross-sectional dimensions: thickness 18-45mm (such as 2.5×4cm, 3×4cm), various widths (75-235mm).
Features: used for furniture frames, nail holding force and stability need to be considered.

2. Other special purpose specifications
Bridge sleepers: large cross-sectional square timbers such as 100×100mm, 200×200mm.
Engineering springboards: flat sizes such as 40×250mm, 50×300mm.
Customized specifications: non-standard sizes can be customized according to needs, such as 35×85mm, 37×87mm, etc.

3. Precautions
Insect and anti-corrosion: outdoor use requires soaking in preservatives to prevent termite erosion.
Anti-cracking: glue is required to repair cracks in a dry environment.
Dimensional error: actual measurements may differ, and selection is required based on engineering needs.