The difference between rosewood and black red rosewood
Understanding the Differences Between Rosewood and Black Red Rosewood: One of the main distinctions between rosewood and black red rosewood lies in their weight. Rosewood, which belongs to the genus Pterocarpus, is generally lighter and softer, often floating in water. The air-dried density of seven types of rosewood—such as Chongqing rosewood, Andaman rosewood, Hedgehog rosewood, Indian rosewood, Big Fruit Rosewood, Sacred Rosewood, and Bird Foot Rosewood—ranges from 0.53 to 1.01 grams per cubic centimeter (with an average of 0.79 to 0.91 grams per cubic centimeter). In contrast, red rosewood sinks in water, with an air-dried density of seven types like Bali Dalbergia, Saizhou Dalbergia, Sian Rosewood, Fluff Dalbergia, D. sylvestris, D. serrata, and Dalbergia sinensis ranging from 0.90 to 1.22 grams per cubic centimeter (average of 1.02 to 1.14 grams per cubic centimeter). Black rosewood also sinks in water, with eight varieties including Knife-shaped Black Rosewood, Black Rosewood, Broad-leaved Rosewood, Lushi Black Rosewood, East African Black Rosewood, Brazilian Black Rosewood, Amazon Yellow Tan, and Belize Dalbergia having a dry density between 0.82 and 1.33 grams per cubic centimeter (average of 0.92 to 1.06 grams per cubic centimeter). Another key difference is the fluorescence of the wood dust when soaked in water. When exposed to light, the water infusion of rosewood shavings shows more fluorescence, especially in birdwood and red sandalwood. However, red and black rosewoods do not exhibit this effect. The third distinction is the scent. Rosewood has a distinct spicy aroma, while red and black rosewoods emit a stronger acidic or resinous smell. A fourth difference is the structure of the wood. Rosewood typically has a diffuse-porous or semi-ring-porous pattern, whereas red and black rosewoods are usually loose-porous, with semi-ring-porous structures being less visible. The fifth point relates to color and grain. Rosewood has a reddish-brown to purple-red hue that is relatively uniform, with ray tissues that are homomorphic and mostly single-row. On the other hand, red and black rosewood also display reddish-brown to purple-red or even black tones, but they often have dark streaks. Their ray tissues are more pronounced, usually appearing in two rows, and are less commonly found in single rows. Valve Diaphragm Diaphragm is also called membrane, which is a very important sealing component of the valve. NINGBO DOTEC manufactures various diaphragms for pulse valves and solenoid valves. We use all high quality raw materials to ensure long service life. Pulse Valve Diaphragm, Solenoid Valve Diaphragm, Pulse Valve Membrane, Pulse Jet Valve Diaphragm NINGBO DOTEC AUTOMATION CO., LTD , https://www.ningbodotec.com
Valve Diaphragm Types:
1. GOYEN Type Pulse Valve Diaphragm
2. ASCO Type Pulse Valve Diaphragm
3. SBFEC Type Pulse Valve Diaphragm
4. TURBO Type Pulse Valve Diaphragm
5. MECAIR Type Pulse Valve Dipahragm
6. JOIL Type Pulse Valve Diaphragm
7. Norgren Buschjost Type Pulse Valve Diaphragm
8. AUTEL Type Pulse Valve Diaphragm
9. TAEHA Type Pulse Valve Diaphragm
10. Other Pulse Valve Diaphragm
11. Water Solenoid Valve Diaphragm