Redwood National Standard
Now that our country's economy is advanced and the standard of living of the people has improved significantly, people generally attach importance to interior decoration and purchase of furniture. Some people who get rich first have a special liking for mahogany furniture, but the wood on the market called mahogany is difficult to discern and damages the interests of consumers.
At present, the name of the wood on the market is very confusing. In the advertisement of the 2nd China International Floor Decoration and Carpet Exhibition in Beijing, the names of wood and wood products are not standardized, and some manufacturers take the format of wood names seriously. However, the name of the foreign language product was confused with the Latin name, and the transliteration of the foreign language product name was misused as the standardized Chinese name. Some manufacturers only use self-made non-standard Chinese names; even worse, ignoring the specification of wood names, expressly tell consumers: "The company sold the floor name for the product name or common name," participate in the exhibition In the advertisements of 25 major manufacturers, there are phenomena of climbing redwood species. There are 38 names of woods for climbing rosewood. What are Red Tan, Yu Tan, Tie Tan, Jin Tan, Xiang Tan, Long Tan, and Gu Tan? There are also many Panxi Pears, such as Guibaurtia sp., which is mainly produced in Africa, which is called the Brazilian rose pear; some of the two timbers with the same name are not of the same tree species. The floor merchant Tanhong refers to the Mauilkara sp., while the furniture trader refers to the Swartizia sp. as red sandalwood, and the other refers to the domestically-named Belula alnoides as the cherry wood (Prunus sp. ), Heuea brasikiensis and Quercus mogolica are both called oak, Fagus syluatica is called eucalyptus (Zelkova is a domestic eucalyptus). There is no standardized Chinese name, so there is no Non-standard, no standard No one can identify the authenticity and pros and cons of any person.
The "Redwood" national standard has been promulgated and implemented. Since there are already standard mahogany timber name standards, there is a basis for fundamentally solving the problem of confusion in the name of redwood.
The "Redwood" national standard has made specific provisions for redwood. First of all, mahogany is a proprietary and specific term. It is neither a pan-reflector of all colors of red wood nor all high-grade furniture. Redwood is a collective name for 8 types of wood. Rosewood, rosewood, rosewood, and ebony should be used every day. The name of the exact material can be represented by the name of chicken, wenge, etc. Try not to use the term mahogany.
The mahogany standards specify the type, species and material of mahogany.
1 Tree species and categories
Includes 5 genera: Pterocarpus, Dalbergia, Diospyros, Cryptotes, and Trichoderma and 8 categories: rosewood, rosewood, incense stick, black rosewood, red rosewood, ebony, striped ebony and Chicken wing wood.
2 Wood structure
The wood structure is very fine to fine, and the mean diameter of the conduit (pipe hole) is no more than 200um.
3 Wood density (weight)
The dry air density at a moisture content of 12% is greater than 0.76 g/cm3.
4 wood color (meaning heartwood, excluding sapwood)
The heartwoods of the above five tree species are those that have been darkened by the atmosphere and are classified as reddish purple in rosewood, reddish-brown in rosewood, reddish-brown in the wood of the twig, dark purple in the black wood, and red in the black. Branches are red-brown, ebony black and black, striped ebony and chicken wing wood are mainly black.
5 Specific Standards Required for Various Types of Redwood
5.1 Rosewood Prerequisites
Pterocarpus species.
The wood structure is very fine to fine, and the mean diameter of the conduit (pipe hole) is no more than 160um.
The air dry density is more than 1.00g/cm3 when the wood moisture content is 12%.
The heartwood of wood has a reddish-purple color and turns dark purple for a long time.
5.2 Prerequisites for Rosewood
Pterocarpus species.
The structure of the wood is fine to fine, and the average diameter of the conduit (pipe hole) is no more than 200um.
The air-dry density is greater than 0.76g/cm3 when the wood moisture content is 12%.
The heartwood of wood, reddish brown to purple, often with dark stripes.
5.3 essential conditions for incense sticks
Dalbergia tree species.
The structure of the wood is fine to fine, and the mean diameter of the conduit (pipe hole) is no more than 120um.
The air-dry density is greater than 0.80 g/cm3 when the wood moisture content is 12%.
The heartwood of wood is rich in spicy aroma and red and brown in color.
5.4 Black Rosewood Prerequisites
Dalbergia species.
The structure of the wood is fine to fine, and the average diameter of the pipe string is not more than 200um.
The air dry density is greater than 0.85 g/cm3 when the wood moisture content is 12%.
The heartwood of the wood, the material is suede brown, often with black stripes.
5.5 Red Rosewood Prerequisites
Dalbergia species.
The structure of the wood is fine to fine, and the average diameter of the pipe string is not more than 200um.
The air dry density is greater than 0.85 g/cm3 when the wood moisture content is 12%.
Heartwood of wood, reddish-brown to purple.
5.6 Ebony Stripe
Diospyros species.
The structure of the wood is fine to fine, and the average diameter of the pipe string is not more than 150um.
The air-dry density is greater than 0.90 g/cm3 when the wood moisture content is 12%.
Wood heartwood, wood color.
5.7 Striped ebony prerequisites
Diospyros species.
The structure of the wood is fine to fine, and the average diameter of the pipe string is not more than 150um.
The air-dry density is greater than 0.90 g/cm3 when the wood moisture content is 12%.
Heartwood of wood, black or brown, with light stripes.
5.8 chicken wings wood
The species of Millettia and Cassia.
The wood structure is very fine to fine, and the mean diameter of the conduit (pipe hole) is no more than 200um.
The air-dry density is greater than 0.80 g/cm3 when the wood moisture content is 12%.
The wood must be dark brown or millet brown, with chicken wings on the string surface.
The names of raw materials for wood products are different, and the species of trees are different, and their wood quality, quality and selling price are also different. In the false mahogany, in addition to the above-mentioned ancient wood, there are also Swartizia sp., Diallum sp., Afzella sp., Pericopsis sp., and gum. Tree species such as Glutahe sp and Melanorrhoea sp.
There is also an important issue, that is, the distinction between rosewood and Asian rosewood. In the four regulations, they have the same two items; the difference is that the former has a fine and fine wood structure, an average tube hole diameter of no more than 200um, and wood contains water. At a rate of 12%, the air-dry density is greater than 0.76g/cm3, which is paid for mahogany and the latter is not mahogany. This difference is easy to distinguish when comparing with wood samples, but it is difficult to distinguish after making products. When consumers purchase mahogany products, they must be required to specify the mahogany category according to the "Redwood" national standard. At the same time, they must state whether all the materials used are mahogany or the main components are mahogany; otherwise, once If there is a dispute, there is no strong basis for it. This not only safeguards the interests of consumers, but also is beneficial to manufacturers, because in order to reduce damage to wood products during identification, accessories are often taken out and sliced.
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