Black walnut origin
American and Canadian black walnut wood timber is abundant in North America, Northern Europe and other places. Its sheet mask is shiny, no special smell and taste, straight texture, fine structure to slightly thicker and even. The veneer of black walnut is often used in the construction of wooden parts and high-class classroom furniture. Because it is a dark tree species and has good elasticity, it is also very suitable for the surface of tables and chairs. Traditional veneer can be used on the piano surface and the interior finish of mid- to high-end cars. The very precious California black walnut tree veneer is used for interior decoration or high-end club decoration of higher-end Mercedes-Benz, BMW. Black walnut is dark brown and gray is more noble. The characteristics of American walnuts sometimes have "bird scars", like small nail-sized knots.
Black walnut related introduction
Iron walnut is also known as foaming walnuts and walnuts. Deciduous trees, generally 10 to 20 meters high, with a life span of more than 100 years. The trunk is gray-brown, dark brown when old, and has a longitudinal split. The new branches are light green or greenish brown, smooth and have white lenticels. The fruit is round yellow-green, the surface is pilose, and there are 1 seed in the fruit. The outer seed coat is called the fruit shell, the surface is engraved, and the shell has thick and thin points. The inner seed coat is extremely thin, light brown and has veins.
Wild walnuts: deciduous trees or small trees, due to their different growing environments, the height of trees is generally 5 to 20 meters. The crown is broadly round and the branchlets have glandular hairs. The fruit is ovoid, apex acute, yellow-green on the surface, with glandular hairs. The seeds are oval in shape, the seed shell is thick, there are 6-8 ridges, the inner compartment is bone, the inner seed coat is very thin and yellow, and the veins are not obvious.
Walnut 楸: also known as pecan. Deciduous trees, up to 20 meters. The crown is oblong, the trunk is gray or dark gray, smooth when young, shallow and longitudinally cracked when old, the branches are gray and thick, with glandular hairs, and the lenticels are white. The fruit is ovate or ovoid, apex acute, with 6-8 ridges on the surface. The shell and inner partition are thick, and the inner seed coat is dark yellow.
Hemp walnut: also known as Hebei walnut. Deciduous trees, trees are 10 to 20 meters high. The trunk is gray, smooth, and has a shallow longitudinal crack when old. Branchlets taupe thick and smooth. Fruit oblong, slightly hairy or smooth, light green, apex apex. The nut is oblong, the tip is short, and there are obvious or inconspicuous ridges. The suture is raised, the shell is thick and not easy to crack, and the inner partition is well-developed and the seed is difficult to take.
Keppel Walnut: Deciduous trees with a height of 20 to 25 meters. The trunk is grayish brown or dark gray with a shallow longitudinal split. Fruit oblong, apex apex, green, dense glandular hairs. The nuts have 8 distinct ridges, with engraved edges, thick shells, and internal septum bones, which are difficult to obtain.
Heart-shaped walnut: also known as Ji walnut. Similar in shape to Keppel Walnut, the main difference is in the fruit. The fruit has a flat heart shape, a small, nut-shaped heart-shaped, smooth, apex tip, and the sides of the suture are wider. Although the nut shell is strong, but there is no inner wall, the suture is easy to crack, and the whole kernel can be taken. The kernel yield is 30~36#Percent#.
Black walnut: large deciduous trees with a height of more than 30 meters and a round or cylindrical crown. The bark is dark brown or taupe, and the longitudinal crack is deep. The fruit is spherical, light green, with small protrusions, pilose, nut slightly rounded, apex microtips, irregular grooves on the surface, thick shell, difficult to crack. This species is native to North America and is currently grown in large areas in northern China.
China lighter production machine, lighter automation equipment, lighter assembly machine, lighter automatic inflator, lighter automatic lighter, lighter parts assembly machine, lighter accessories manufacturer
Lighter automation equipment,Lighter Assembly Machine,Lighter Automatic Inflator,Lighter automatic production line,Lighter Parts Assembly Machine
GuangDong Feituo Automation Technology Co., Ltd. , https://www.feetoolighter.com