dredge pumps ranging from inlet diameters of 400mm up to 1400mm. Our CFD optimized pumps have an excellent suction performance, high efficiency, long wear life and require a minimum of maintenance. The pumps can be delivered in different types of wear resistant materials, and can be executed in a large number of different configurations.
Photo of our Dredging Pump:
Single-Walled Dredge Pumps Dredging Pump Dredge Pump,Dredging Equipment,Diaphragm Pump Unisite Group Ltd. , https://www.unisitemarine.com
single-walled dredge pumps are `all-round` and used in all types of dredgers. They are designed for typical pump pressures up to 16 bars, and can be excecuted with different types of pump seals such as: stuffing box, mechnical seal or hydro seal.
Double-Walled Dredge Pumps
double-walled dredge pumps are specially designed for high pressures, starting typically from 16 up to 30 bars. The double-walled pump design is based on the concept of pressure compensation between the outer-, and inner-pump casing. All types of configurations are possible such as 3,4 and 5 vane impellers, and casted or welded outer-casings.
Underwater Dredge Pumps
The underwater dredge pumps are used in cases where the highest possible suction performance is required. They basically have the same possibilities and options as our single-walled pumps have. Depending on our clients' preference they are executed with direct motor drive or integrated gearbox, with or without pressure compensation.
Casting
1)Pattern
Collection in our storehouse. Inspection of pattern in our workshop.
Pieces cast with wrong pattern due to insufficient inspection of pattern are rejected.
Free delivery of pattern (in good condition) with last cast piece of order to our client or stored in our workshop for future new production but with time-limited or quantity-bound.
2)Cast pieces
Material
The use of the cast pieces requires other chemical analysis and mechanical properties (unless otherwise mentioned on drawing).
Cast pieces group S (Wear) :
Impellers, pumphousings, dredge lines (bends, branchpipes, etc.)
Cast pieces group C (Construction) :
Other pieces as pivots, rod eyes, wire sheaves etc.
3)cast seel
GS32NiCrMo14.4.2
Chemical:
C:0.30-0.36% Si:0.60%MAX
Mn:0.60-1.00% Cr:1.00-1.70%
Ni:3.00-4.00% Mo:0.30-0.60% S:0.025%MAX P:0.03%MAX
V:0.05%MAX Cu:0.30%MAX
Mechanical:
Rm:min1100MPa;Rp0.2:≥850
A:≥8%;KV≥15J(20℃)
4)cast iron
3)Inspection
Cast pieces are presented in our workshop, for inspection of dimensions and hardness after sandblasting and machining but before conservation and painting. Measurements are carried out by our services and deviations are sanctioned as follows:
At stress concentration area, MT&PT to check the crack, the qualified standard is no crack at these area.
Hailai Lighting's transformation and production of LED lights successfully entered the US market
Xiamen Hailai Lighting Co., Ltd. is in the forefront of China's energy-saving lamps and LED lamp manufacturing enterprises. It is the main exporter of high-end energy-saving lamps and LED lamps. The company's products are mainly sold to markets such as the United States. Since the establishment of the R&D team that meets the personalized service, Hailai has been committed to the research and development of light source products technology. At the same time, it also has a research and development team that can meet the customer's personalized service, and specializes in in-depth research on product shape improvement and performance improvement. As far as possible, it is possible to manufacture energy-saving light source products with excellent performance by miniaturization and exquisite appearance, replacing high-energy incandescent lamps. Not only that, Hailai Lighting has also introduced a number of imported equipment, complete quality testing equipment, and the configuration level is among the best in the industry. Through more than ten years of continuous efforts, the scale of Hailai has grown continuously. The number of employees has grown from dozens of people at the time of the company's establishment to thousands of people, and has won many internationally renowned lighting companies with first-class quality and excellent service. The recognition of large supermarket chains has become their designated supplier. LED lights successfully entered the US Taiji, the city and other supermarkets Four years ago, Hailai proposed a production transformation plan, the production focus from energy-saving lamps to LED lights. Today, Hailai Lighting's LED lights have successfully entered the US Taiji, the city and other supermarkets. After the guidance of the consultants of the China Productivity Center, Hailai established a demonstration line of LED automatic production. The same amount of work, the previous 45 people, now only seven. Since 2013, Hailai has invested a total of more than 91 million yuan for machine au pair, revolutionizing the LED production line and realizing the transformation from labor-intensive production to automated production. The implementation of the project also brought a series of changes to Hailai. The automatic production rate of LED production lines reached 70%, and the product quality was better. The pass rate increased from 86% to 99%. Since 2013, the Hailai LED lamp production line has realized an output value of 1.3 billion yuan.