 Namibia Namibia is located on the west side of the Union of South Africa, west of the Atlantic, coastal alluvial diamond are well developed, where the diamond mainly by crossing the Orange River in South Africa from the Union of South Africa, Lesotho and other countries of the diamond deposit (by Handled from weathering and erosion. Due to the repeated erosion of flowing water and waves, inferior diamonds are eliminated. Therefore, Namibia's diamonds are characterized by pure colorless diamonds, and extremely precious pale blue diamonds are also visible. 
Russia  Russia is a world famous diamond resource country, mainly distributed in Yakutia in Siberia, Arkhangelsk and Ural on the east coast of the White Sea. Since the discovery of diamond primary deposits in the Yakut area in 1954, more than 800 kimberlite tubes have been found in the area to date, of which more than 160 are in the form of diamonds, and 13 have economic value, the most important diamond mines. Yes: Kimberly rock pipes such as “Peaceâ€, “Successâ€, “Ayarâ€, “International†and “Quanbiliâ€, the diamond primary mine in the Arkhangels region, which was discovered in recent years. Not yet mined. There are only diamond sand mines in the Ural region. No primary minerals have been found so far; diamond production is limited, but the quality is good. Common colorless and transparent gem -quality diamonds are common. 
Russia's diamond production ranks among the top in the world, mainly mining diamond deposits in the Yakutia region of Siberia. In recent years, the annual output is 10 million to 12 million carats. Diamond quality is better, with gem grades accounting for 25%, semi-gem grades accounting for 32%, and industrial grades accounting for 43%. The gem-quality diamonds in Yakutia are mainly high-purity, colorless and near-colorless, and some pale gold diamonds are also found, which do not produce colored diamonds. 
Botswana  Since Botswana discovered the diamond primary mine in 1967, more than 200 kimberlite tubes have been discovered so far, three of which have important economic value, namely “Olapaâ€, “Jewangnian†and “Wrighthani†large diamonds. Primary deposit. At present, it has a diamond reserve of about 300 million carats. 
The “Jiwangnian†Kimberley rock tube has a diamond content of about 200 million carats, and the diamond quality is better. The gem-quality diamond accounts for 40%. It is called the world's largest gem-quality diamond mine. In recent years, diamond production has ranged from 10 million to 11 million carats. The mine features green and diamond and high-purity, white gem-quality diamonds. 
The proven reserves of “Olapa†diamond rock tubes exceed 100 million carats, and the output in recent years is 5 million carats. The quality of the diamond is medium, and the gem-quality diamond accounts for 15%. It is mainly composed of yellowish-light yellow gem-quality diamond, and it also shows very rare high-purity, white gem-quality diamond. The diamond quality of the “Lighthani†rock tube is comparable to that of the “Olapa†rock tube. 
Australia  Australia has discovered the “Argyle†super-large olive volcanic rock-type diamond deposit in Western Australia since 1979. Since 1986, the diamond production reached 25 million carats, becoming the world's number one diamond producing country. . In recent years, Australia's annual output of diamonds is 35 to 45 million carats, 95% of its output comes from the "Agall" mine, the average diamond grade is 6.8 carats / ton, and the estimated diamond reserves are about 600 million carats. Since its mining in 1984, the rock pipe has produced 350 million carats of diamonds and 70 tons of diamonds. It currently holds about 250 million carats of reserves. The diamonds in the “Aguerre†rock tube are poor, with gem-grade diamonds accounting for 6%, semi-precious diamonds accounting for 38%, and industrial grade diamonds accounting for 56%.
It is worth noting that the Australian “Aguel†rock tube contains a certain number of brightly colored rose and pink gem-quality diamonds, which are rare treasures, with an average price of more than US$3,000 per carat of diamond. One of the 3.5-carat rose-high-grade, high-quality gem-quality diamonds sold for $3.5 million. In addition, a very small amount of blue gem diamond was found. [next]
Congo刚果 Congo was once the world's largest diamond producer. After retracing in Australia in 1986, it ranked second in the world. In recent years, diamond production has been declining. Among them, the production of “Miba†company is 6,803,900 carats. Its diamonds are mainly distributed in the Bushmayi and Chekapa areas, mainly in diamond sand mines, and also in the Bushmai area, there are also kimberlite-type diamond primary minerals. The famous rock pipes are "Mbuji Mayi 1" and "Kibua A" rock pipes, all distributed in the Bush Mayi area. The quality of diamonds in the Bushmai area is poor, with gray, brown and light yellow diamonds mostly, and colorless transparent diamonds are rare. Gem-grade diamonds account for 7%, with a total of semi-precious and industrial grade diamonds. The quality of the diamonds in the Chekapa area is very good, mainly colorless and transparent diamonds, with an average sales price of 150-160 US dollars per carat. 
Angola Angola is an important diamond resource country in the world. There are 94 kimberlite tubes known, three of which are of great economic value, and the famous “Kumiti†large diamond primary deposit. In recent years, Angola's annual diamond production is 1.5 million to 2.7 million carats. The diamond produced is famous for its good quality, second only to Namibia in the world. Diamonds are mainly colorless, high-purity, high-quality gem-quality diamonds with an average sales price of $257 per carat. 
West African countries West Africa, including Sierra Leone, Ghana, Guinea, Ivory Coast, Liberia and Mali, is the world's main mining diamond reserve of less than 200 million carats, accounting for about 10% of the world's total diamond reserves. . 
Sierra Leone is an important diamond producer in the world, with an annual production of 2.05 million carats of diamonds. Diamond sand deposits are mainly distributed in the Seba River in eastern Sierra Leone and its tributaries Buffy, Moa and Mano rivers, with an estimated 20 million carats of diamond reserves. The quality of the Celeon diamond is good, and the gem-quality diamond accounts for more than 60%. It is mainly high-purity white high-quality diamond. The gem-quality diamond is very common. The largest one is named “Star of Sierra Leone†and weighs 968.90 carats. It is colorless and transparent. It is a world-famous quality gem-quality diamond. In addition, there is a gem-quality diamond with a weight of 770.00 carats. Although the crystal surface has a small amount of black spots, the interior is clear and transparent. It is a colorless series. It is a world famous gem-quality diamond and is named "Wuyi River" diamond. 
Ghana diamond was discovered during the mining of gold deposits in 1919. It is mainly distributed in the upper reaches of the Perim River in southeastern Ghana. Ghana has smaller diamond particles but good quality. It is mainly colorless and transparent diamond, and gem-quality diamonds account for 50%. Above %, the average diamond sales price per carat is $165. 
Tanzania
More than 100 kimberlite tubes have been discovered in Tanzania. Five of them have been mined in different periods. Only one tube has important economic value, namely the world famous “Mwaduyi†rock tube. 
The "Mwadui" rock tube is famous for its gem-quality diamonds. For example, the high purity white diamond found in 1956 weighing 240.83 carats was named "Mwadui" diamond. In addition, we found a colorless series of gem-quality diamonds weighing 256.07 carats, a very beautiful rose gem-quality diamond weighing 155.00 carats and a very precious light blue gem-quality diamond weighing 114.00 carats and weighing 114.00 carats. Extremely precious light blue and white gem diamond. Among them, the rose jewel-grade diamond weighing 155.00 carats was named "Williamson" diamond. [next]
Brazilian 
Brazil's diamond sands are mainly distributed in the “triangular mining area†in the westernmost part of Minas Gerais, the upper reaches of the San Francisco River. The diamond grade in the sand mine is not high, but the quality is good, mainly yellowish white diamond, and a small amount of high-purity white diamond. The area is rich in gem-quality diamonds and is known as the “hometown of big diamondsâ€. The famous gem-quality diamonds are: President of Vargas with a yellowish white weight of 726.60 carats, President of Dutra with a slight brownish white weight of 407.70 carats, and a yellowish weight of 400.65 carats. "Coromandel" and "Great Brazil", "Southern Star", "Egypt Star" and so on. 
Indian 
India was the first country in the world to discover diamonds, and diamond sand ore was mined about 2,800 years ago. For a long time, India has been the main producer of diamonds in the world. Later, due to the discovery of diamond deposits in Brazil, especially in Africa, the status of Indian diamonds has declined significantly. Indian diamonds are of high quality and more than 85% are gem-quality, featuring colorless, transparent and high clarity. Currently reserves of 10 million carats. 
Indian diamond deposits are mainly distributed in the Panna region and the Andhra Pradesh region. A total of 8 olive volcanic rock tubes were discovered in the area. The diamond sand ore in the Panna area is rich in grade, the diamond quality is good, the particles are large, and the gem-quality diamonds account for 87%. The Andhra Pradesh region is famous for producing precious gem-quality diamonds. World, such as the "great horse fruit" diamond with a colorless and high clarity of 793.50 carats, the "Mongolian Emperor" diamond of 787.50 carats, the "Regent King" diamond, the "Dutch Queen" diamond and " The mountain of light "diamond." 
Chinese 
According to the literature, the earliest discovery of diamonds in China was the discovery of diamonds in the Taoyuan and Changde areas during the Qing Dynasty. At about the same time, diamonds were also found in the Yucheng area of ​​Shandong. Since 1953, after exploration, diamond deposits have been discovered in Hunan, Shandong and Liaoning provinces. The current annual diamond production is 150,000-200,000 carats. 
Liaoning Wafangdian area is the main production area of ​​diamond in China, both from primary mines and from sand mines. The diamond quality in this area is excellent, most of them are colorless and transparent. The color forming series are mainly D, E, F colorless series and G, H, I, J near colorless series; high clarity; shape is octahedron and diamond ten The dihedron is predominant and there are also a few cubes. The diamonds in the Wafangdian area account for more than 60% of the gemstones. The largest gem-quality diamonds that have been discovered in Liaoning are currently 65 carats.
The Yimeng Mountainous Area in Shandong Province is an important production area for diamonds in China. It is also the earliest area in China to discover kimberlite-type diamond primary deposits. In addition, diamond sand ore is also distributed in the Yucheng area. The primary mines in the Yimeng mountain area are mainly industrial grade diamonds, and gem-quality diamonds account for only 15%. The largest gem-quality diamond that has been found in primary mines now weighs 119 carats and is pale yellow, named "Mengshan No. 1" diamond. The diamond in the sand mines in the Yucheng area is also of poor quality. It is famous for producing large diamonds, such as “Dongjiayu No.1, No.2 and No.3†diamonds. In 1942, a yellowish gem-quality diamond weighing 437.50 carats was found, named "Golden" Golden Chicken Diamond."
Hunan Changde and Taoyuan areas are famous diamond sand mining areas in China. The quality of diamonds is good, the colors are mainly pale yellow and colorless and transparent; the clarity is high, most of them are VVS and VS; gem-quality diamonds account for more than 60%. At present, the largest gem-quality diamond that has been discovered in the Lishui River Basin in Hunan is 52 carats.
Russia  Russia is a world famous diamond resource country, mainly distributed in Yakutia in Siberia, Arkhangelsk and Ural on the east coast of the White Sea. Since the discovery of diamond primary deposits in the Yakut area in 1954, more than 800 kimberlite tubes have been found in the area to date, of which more than 160 are in the form of diamonds, and 13 have economic value, the most important diamond mines. Yes: Kimberly rock pipes such as “Peaceâ€, “Successâ€, “Ayarâ€, “International†and “Quanbiliâ€, the diamond primary mine in the Arkhangels region, which was discovered in recent years. Not yet mined. There are only diamond sand mines in the Ural region. No primary minerals have been found so far; diamond production is limited, but the quality is good. Common colorless and transparent gem -quality diamonds are common. 
Russia's diamond production ranks among the top in the world, mainly mining diamond deposits in the Yakutia region of Siberia. In recent years, the annual output is 10 million to 12 million carats. Diamond quality is better, with gem grades accounting for 25%, semi-gem grades accounting for 32%, and industrial grades accounting for 43%. The gem-quality diamonds in Yakutia are mainly high-purity, colorless and near-colorless, and some pale gold diamonds are also found, which do not produce colored diamonds. 
Botswana  Since Botswana discovered the diamond primary mine in 1967, more than 200 kimberlite tubes have been discovered so far, three of which have important economic value, namely “Olapaâ€, “Jewangnian†and “Wrighthani†large diamonds. Primary deposit. At present, it has a diamond reserve of about 300 million carats. 
The “Jiwangnian†Kimberley rock tube has a diamond content of about 200 million carats, and the diamond quality is better. The gem-quality diamond accounts for 40%. It is called the world's largest gem-quality diamond mine. In recent years, diamond production has ranged from 10 million to 11 million carats. The mine features green and diamond and high-purity, white gem-quality diamonds. 
The proven reserves of “Olapa†diamond rock tubes exceed 100 million carats, and the output in recent years is 5 million carats. The quality of the diamond is medium, and the gem-quality diamond accounts for 15%. It is mainly composed of yellowish-light yellow gem-quality diamond, and it also shows very rare high-purity, white gem-quality diamond. The diamond quality of the “Lighthani†rock tube is comparable to that of the “Olapa†rock tube. 
Australia  Australia has discovered the “Argyle†super-large olive volcanic rock-type diamond deposit in Western Australia since 1979. Since 1986, the diamond production reached 25 million carats, becoming the world's number one diamond producing country. . In recent years, Australia's annual output of diamonds is 35 to 45 million carats, 95% of its output comes from the "Agall" mine, the average diamond grade is 6.8 carats / ton, and the estimated diamond reserves are about 600 million carats. Since its mining in 1984, the rock pipe has produced 350 million carats of diamonds and 70 tons of diamonds. It currently holds about 250 million carats of reserves. The diamonds in the “Aguerre†rock tube are poor, with gem-grade diamonds accounting for 6%, semi-precious diamonds accounting for 38%, and industrial grade diamonds accounting for 56%.
It is worth noting that the Australian “Aguel†rock tube contains a certain number of brightly colored rose and pink gem-quality diamonds, which are rare treasures, with an average price of more than US$3,000 per carat of diamond. One of the 3.5-carat rose-high-grade, high-quality gem-quality diamonds sold for $3.5 million. In addition, a very small amount of blue gem diamond was found. [next]
Congo刚果 Congo was once the world's largest diamond producer. After retracing in Australia in 1986, it ranked second in the world. In recent years, diamond production has been declining. Among them, the production of “Miba†company is 6,803,900 carats. Its diamonds are mainly distributed in the Bushmayi and Chekapa areas, mainly in diamond sand mines, and also in the Bushmai area, there are also kimberlite-type diamond primary minerals. The famous rock pipes are "Mbuji Mayi 1" and "Kibua A" rock pipes, all distributed in the Bush Mayi area. The quality of diamonds in the Bushmai area is poor, with gray, brown and light yellow diamonds mostly, and colorless transparent diamonds are rare. Gem-grade diamonds account for 7%, with a total of semi-precious and industrial grade diamonds. The quality of the diamonds in the Chekapa area is very good, mainly colorless and transparent diamonds, with an average sales price of 150-160 US dollars per carat. 
Angola Angola is an important diamond resource country in the world. There are 94 kimberlite tubes known, three of which are of great economic value, and the famous “Kumiti†large diamond primary deposit. In recent years, Angola's annual diamond production is 1.5 million to 2.7 million carats. The diamond produced is famous for its good quality, second only to Namibia in the world. Diamonds are mainly colorless, high-purity, high-quality gem-quality diamonds with an average sales price of $257 per carat. 
West African countries West Africa, including Sierra Leone, Ghana, Guinea, Ivory Coast, Liberia and Mali, is the world's main mining diamond reserve of less than 200 million carats, accounting for about 10% of the world's total diamond reserves. . 
Sierra Leone is an important diamond producer in the world, with an annual production of 2.05 million carats of diamonds. Diamond sand deposits are mainly distributed in the Seba River in eastern Sierra Leone and its tributaries Buffy, Moa and Mano rivers, with an estimated 20 million carats of diamond reserves. The quality of the Celeon diamond is good, and the gem-quality diamond accounts for more than 60%. It is mainly high-purity white high-quality diamond. The gem-quality diamond is very common. The largest one is named “Star of Sierra Leone†and weighs 968.90 carats. It is colorless and transparent. It is a world-famous quality gem-quality diamond. In addition, there is a gem-quality diamond with a weight of 770.00 carats. Although the crystal surface has a small amount of black spots, the interior is clear and transparent. It is a colorless series. It is a world famous gem-quality diamond and is named "Wuyi River" diamond. 
Ghana diamond was discovered during the mining of gold deposits in 1919. It is mainly distributed in the upper reaches of the Perim River in southeastern Ghana. Ghana has smaller diamond particles but good quality. It is mainly colorless and transparent diamond, and gem-quality diamonds account for 50%. Above %, the average diamond sales price per carat is $165. 
Tanzania
More than 100 kimberlite tubes have been discovered in Tanzania. Five of them have been mined in different periods. Only one tube has important economic value, namely the world famous “Mwaduyi†rock tube. 
The "Mwadui" rock tube is famous for its gem-quality diamonds. For example, the high purity white diamond found in 1956 weighing 240.83 carats was named "Mwadui" diamond. In addition, we found a colorless series of gem-quality diamonds weighing 256.07 carats, a very beautiful rose gem-quality diamond weighing 155.00 carats and a very precious light blue gem-quality diamond weighing 114.00 carats and weighing 114.00 carats. Extremely precious light blue and white gem diamond. Among them, the rose jewel-grade diamond weighing 155.00 carats was named "Williamson" diamond. [next]
Brazilian 
Brazil's diamond sands are mainly distributed in the “triangular mining area†in the westernmost part of Minas Gerais, the upper reaches of the San Francisco River. The diamond grade in the sand mine is not high, but the quality is good, mainly yellowish white diamond, and a small amount of high-purity white diamond. The area is rich in gem-quality diamonds and is known as the “hometown of big diamondsâ€. The famous gem-quality diamonds are: President of Vargas with a yellowish white weight of 726.60 carats, President of Dutra with a slight brownish white weight of 407.70 carats, and a yellowish weight of 400.65 carats. "Coromandel" and "Great Brazil", "Southern Star", "Egypt Star" and so on. 
Indian 
India was the first country in the world to discover diamonds, and diamond sand ore was mined about 2,800 years ago. For a long time, India has been the main producer of diamonds in the world. Later, due to the discovery of diamond deposits in Brazil, especially in Africa, the status of Indian diamonds has declined significantly. Indian diamonds are of high quality and more than 85% are gem-quality, featuring colorless, transparent and high clarity. Currently reserves of 10 million carats. 
Indian diamond deposits are mainly distributed in the Panna region and the Andhra Pradesh region. A total of 8 olive volcanic rock tubes were discovered in the area. The diamond sand ore in the Panna area is rich in grade, the diamond quality is good, the particles are large, and the gem-quality diamonds account for 87%. The Andhra Pradesh region is famous for producing precious gem-quality diamonds. World, such as the "great horse fruit" diamond with a colorless and high clarity of 793.50 carats, the "Mongolian Emperor" diamond of 787.50 carats, the "Regent King" diamond, the "Dutch Queen" diamond and " The mountain of light "diamond." 
Chinese 
According to the literature, the earliest discovery of diamonds in China was the discovery of diamonds in the Taoyuan and Changde areas during the Qing Dynasty. At about the same time, diamonds were also found in the Yucheng area of ​​Shandong. Since 1953, after exploration, diamond deposits have been discovered in Hunan, Shandong and Liaoning provinces. The current annual diamond production is 150,000-200,000 carats. 
Liaoning Wafangdian area is the main production area of ​​diamond in China, both from primary mines and from sand mines. The diamond quality in this area is excellent, most of them are colorless and transparent. The color forming series are mainly D, E, F colorless series and G, H, I, J near colorless series; high clarity; shape is octahedron and diamond ten The dihedron is predominant and there are also a few cubes. The diamonds in the Wafangdian area account for more than 60% of the gemstones. The largest gem-quality diamonds that have been discovered in Liaoning are currently 65 carats.
The Yimeng Mountainous Area in Shandong Province is an important production area for diamonds in China. It is also the earliest area in China to discover kimberlite-type diamond primary deposits. In addition, diamond sand ore is also distributed in the Yucheng area. The primary mines in the Yimeng mountain area are mainly industrial grade diamonds, and gem-quality diamonds account for only 15%. The largest gem-quality diamond that has been found in primary mines now weighs 119 carats and is pale yellow, named "Mengshan No. 1" diamond. The diamond in the sand mines in the Yucheng area is also of poor quality. It is famous for producing large diamonds, such as “Dongjiayu No.1, No.2 and No.3†diamonds. In 1942, a yellowish gem-quality diamond weighing 437.50 carats was found, named "Golden" Golden Chicken Diamond."
Hunan Changde and Taoyuan areas are famous diamond sand mining areas in China. The quality of diamonds is good, the colors are mainly pale yellow and colorless and transparent; the clarity is high, most of them are VVS and VS; gem-quality diamonds account for more than 60%. At present, the largest gem-quality diamond that has been discovered in the Lishui River Basin in Hunan is 52 carats.
Bending Shearing Forming Machine can make the steel plate in a different angle.
It is mainly used for construction, such as steel structures, airports, storehouses,etc.
The bending machine has simple structure, flexible operation and easy maintenance.
It is suitable for linear shearing steel plate.
By PLC operation, single or continuous shearing can be executed at high shearing frequency.
Hydraulic station equipped with rectangular blade.
Extend the operation life of blade.Environmental protection, energy saving.
Technique parameters
(1) Processing material: aluminum/galvanized steel/colored steel coil
(2) Material thickness:0.3- 2mm
(3) Product size:4600*1500*2200mm
(4) Main motor power: 3kw
(5) Pump power:3kw
(6) Main frame: H Steel
(7)Material of the cutting blade:Cr12
(8) Control system: PLC computer control
(9) Power supply: 380V, 3 Phase, 50Hz (can change as customers request)
Components of line
1.Decoiler 1 unit
2.Main Frame 1 unit
3.Cutting Device 1 unit
4.Hydraulic Station 1 unit
5.PLC control system 1 unit
Bending Shearing Machine
Bending Shearing Machine,Metal Bending Shearing Machine,Hydraulic Bending Shear Machine,Hydraulic Sheet Bending Shearing Machine
CANGZHOU DIXIN ROLL FORMING MACHINE CO., LTD , https://www.hebeimachine.com