The development of roads and bridges requires a large number of high-quality sand and gravel materials. The shortage of natural sand resources has caused investors to focus on the mechanism sand equipment. The sand making machine is a very good mechanism for sanding out equipment, especially the Shanghai sand making machine.
With the country's vigorous development of infrastructure construction, all parts of China are constantly exploring the sand and gravel market, increasing investment, vigorously developing road and bridge construction around the country, and actively promoting local economic development. The development of roads and bridges requires a large number of high-quality sand and gravel materials. The shortage of natural sand resources has caused investors to focus on the mechanism sand equipment. The sand making machine is a very good mechanism for sanding out equipment, especially the Shanghai sand making machine.
Taking Iptek Machinery Equipment "target=_blank> Machinery Equipment (Shanghai) Co., Ltd. as an example, the company has been engaged in the mining equipment industry for more than 20 years and has rich experience and good reputation. The company's independent research and development production of sand making machine is of high quality. Reliable and stable performance, energy saving and environmental protection, economical and durable, excellent finished grain shape, very suitable for construction sand, effectively guaranteeing the quality of high-rise buildings, highways, railways, stone bridges, hydropower dams, etc. The first choice for units, transportation departments, and stone factories.
As we all know, in the construction of roads and bridges, concrete factors have the greatest influence, including cement strength, aggregates, admixtures, etc., while the influence of aggregates is particularly direct. The surface condition of aggregates affects the bond between cement stone and aggregate, thus affecting The strength of the concrete; the surface of the gravel is rough and the cohesive force is large; the needle-shaped aggregate has poor strength and small adhesion, while the aggregate of the cube greatly improves the performance of the concrete equipment; the maximum particle size of the aggregate is on the concrete. The strength also has an effect. The larger the maximum particle size of the aggregate, the smaller the strength of the concrete. Therefore, the selection of a complete set of suitable sand making machinery is essential to promote the development of road and bridge construction.
The sand making machine has opened up a huge market for the demand for sand and gravel in China. The Shanghai sand making machine produced by Iptek Machinery Equipment "target=_blank>Mechanical Equipment (Shanghai) Co., Ltd. shows unique advantages in road and bridge construction and building foundation. The products are exported to Southeast Asia, Middle East, Africa, Latin America and Other countries. The region enjoys a good reputation in the industry. The company is committed to providing customers with a full range of crushing solutions, welcome customers to visit and guide.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Fastening Screws, also known as positioning screws, fastening also known as machine rice screws, headless screws, stop screws
1. Application scope: Hexagonal set screws with concave end are used for machine parts with high hardness requirements or frequently adjusted, and are a kind of screws designed for fixing the relative positions of machine parts.
2. Commonly used fastening type: flat end fastening, tip fastening, concave end fastening, column end fastening
3. Reference standards.
Flat end fastening: GB77, DIN913, ISO7026
Tip tightening: GB78, DIN914, ISO4027
Concave end tightening: GB80, DIN916, ISO4029
Column end tightening:GB79.DIN915.ISO4028
Socket Set Screw ,Hex Set Screw,Set Screw Types,Cup Point Set Screw
Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com