Shanghai Xin wood industry limited company is a professional dedicated to the research, production and service as one of honest businesses. The major lines of business and products include Russia imports of Scotch pine, Douglas fir, carbonized wood, and pineapple in Southeast Asia, Ba Laomu, silver tree, Liu Anmu, Southern pine logs. And processing a variety of plates, timber and wood preservative; Manufacture of wooden houses and a variety of glued laminated wood members; Outdoor wood preservative in the production installation; Indoor field plate; Decorative wall panel series. Widely used in villas, landscaping, outdoor recreational piers, bridges, and other fields.

Product introduction

Basic information

Latin name: Pseudotsuga menziesii

Chinese name: Douglas fir /Douglas fir

English name: Douglas fir / D-fir

Family: Pinaceae

Genus: Pseudotsuga

Endangered

National level priority protected wild plants (State Council 1999Year 8Month 4Japanese approval)

Ecological habits

Yoshimitsu, warm and moist climate and well drained acid soils, resistant to drought in winter and spring.

Distribution range

Native United States Pacific Coast Douglas-fir (6Flat things )Lushan mountain in China, Beijing has cultivated.

The distribution ranges from the Rocky Mountains to the Pacific coast, the North and South from Mexico to Canada B. C.Province of New Zealand, United Kingdom, Australia and other places there are planted. Wood can be generally divided into made in Oregon, Washington State and California coast to coast (coast type ), States from the Rocky Mountains to the Rocky Mountains (Rocky Mountain type ) Or inland (Interior type)

Often on the lips is: United States, Canada, and New Zealand.

Landscape use

Saplings are usually used as Christmas trees, magnificent and graceful tree, is an excellent landscape and ornamental trees.

Saw-outdoor landscape is usually processed into lumber, sheet embalmed, outdoor flooring material.

Conservation value

Douglas-fir (Pseudotsuga) is Canada bigger trees, containing two species: coast Douglas fir and Interior Douglas fir. Sapwood is light in colour, width is narrow. Heartwood varies from yellow to red-brown. Early and late wood the color of wood significantly, which has a deeper, more pointed band. This color difference when flat-sawn wood of different shapes. Wood is fine to medium texture, straight grained and non-porous. Douglas fir is Canada strong commercial Cork, one of its high hardness, wear resistance strong, applicable where wear is a factor, such as stents, bridge parts, wooden homes and commercial buildings.

1, Douglas-fir structural characteristics

Douglas fir is known for excellent strength to weight ratio of the world, its high proportion of available good nail holding force and regular force, suitable for making homes and small commercial buildings, multistory buildings and industrial buildings by using wooden frames.

In soft species of North America, Douglas fir not only has a high elastic modulus, its curved fiber stress, tension parallel to grain, shear force, pressure and compression parallel to grain perpendicular to the grain also is extremely good. Is the Douglas fir is of these physical characteristics, and durability of materials and excellent form stability, many construction companies all over the world will be Douglas fir as a judgement of ownership box wood standard.

Douglas fir is known for performance and appearance are also very beautiful. When designing the structure needed to be large wooden beams, long span arch or special shapes (such as: churches, bridges and Stadium), the Douglas fir is often used in wood species. In private homes, commercial buildings, public buildings, towers and the construction of water facilities, made of Douglas fir glulam beam structure roof, floor and pillars of the horizontal load-bearing frame. In the construction of industrial plants, warehouses, garages, and even when you need beauty building, glued beam and reliable building material.

2Appearance grade Douglas fir lumber characteristics

Douglas fir has a pale rose color and beautiful straight texture, by the Sun after dark. Douglas fir the toughness of fiber is not easy to cut or carved by hand, but just use a sharp electric tools and machines can get a smooth cutting surface. This parallel to grain of wood can be shaped into A variety of products, easy to paint on the surface, and can maintain a variety of stain and varnish.

The bark is thick, deeply lobed imbricate. Leaves the bar, CA 1.5-3Cm, obtuse or slightly pointed at the end, dark green above, lighter below, there are two gray-green stomatal bands. Fruit trees (Cone )Oval-shaped ovoid, CA 8Cm, Brown, shiny. Seed scales are rhomboid or subrhombic, bract is longer than seed scales, narrow long acuminate lobes and side lobes wide and short.

Douglas light, warm and moist climate and well drained acid soils, resistant to drought in winter and spring. Bark in a Leopard pattern shape, reddish heartwood and sapwood yellowish resin, resilient material, cadenced, long shelf lives. Wood types: coastal and inland. Douglas fir is a good material for buildings and appliances.

3, Douglas-fir surface treatment

Douglas fir can accept various types of dyeing, surface treatment materials including clear coating, lacquer, varnish, paint or wax, as well as a variety of dyed and soft or bright paint color. Surface treatment in order to obtain better results, water content of the wood should be 12%To 15%Between, or closer to the conventional humidity as possible. Outdoor structures should you apply a coat of primer, for Douglas fir is a dense heavy timber.

4, Defect-free wood, factory, and custom wood and other building materials

Douglas fir construction and wide application of secondary processing industry due to its excellent physical properties and lots of wood. All Douglas fir lumber in accordance with relevant domestic or foreign standards for processing, grading and classification. Canada's classification, Douglas fir timber is divided into:

1)Defect-free material (No knots ): Second level of defect-free material, grade four defect-free material and defect-free material.

2)Factory (Processed into a defect-free material ): Top level processing plate, top level processing plate, level and above processing materials, wood materials AAndB.

3)Building use: light frame material, lightweight frame material, structure shelf bars and plates.

5, Uses a wide range of structural material

Douglas fir has a variety of uses, is a structural material used been widely specified, by engineers and builders of all ages, particularly suitable for structural parts and heavy timber construction, was also widely used in wood piles, railway sleepers, sawmill, warehouses and countless other focus on the structure and properties of areas. Douglas fir as a hard and solid wood, wood-frame that can be used in the construction of light and heavy construction.

Because the Douglas fir with high strength and excellent bonding, so often used to produced in all structures of glued beams, including indoor games hall, a swimming pool, Church and supermarkets.

Douglas fir look good, easy processing, it is suitable for processing into window frames and door frames, mouldings, kitchen cabinets and other millwork. Douglas fir also increases durability of hardness and strength.

Douglas fir has a high corrosion resistance and excellent structural properties, therefore making industrial liquid storage tank, VAT, and other storage containers, mainly wood. Its stability and ease of workability also makes it a material for manufacturing of industrial parts.

6, Used Douglas fir construction

Due to the bearing high Douglas firs, weight ratio, therefore mainly used in the construction and construction timber is glued beam. For a wide range of architectural timber use. Building timber commonly known as material. Mainly in the 35*85Specifications. There are also different according to the geographic specifications. Hangzhou 39*89Most also have 5*10Specifications.

7, Pine market circulation

Current Douglas fir is based on log import mainly from various wood processing plant for processing. Common Douglas fir specifications 3, 4Meters long.

Shanghai Xin wood industry limited company is a professional dedicated to the research, production and service as one of honest businesses. The major lines of business and products include Russia imports of Scotch pine, Douglas fir, carbonized wood, and pineapple in Southeast Asia, Ba Laomu, silver tree, Liu Anmu, Southern pine logs. And processing a variety of plates, timber and wood preservative; Manufacture of wooden houses and a variety of glued laminated wood members; Outdoor wood preservative in the production installation; Indoor field plate; Decorative wall panel series. Widely used in villas, landscaping, outdoor recreational piers, bridges, and other fields.