Steel frame electric bicycles, processing performance, chromium-molybdenum steel is the oldest bicycle materials, the longest of its research, the processing technology has been developed to a very stable level. 2. Strength According to the conclusion of the car, it can be concluded that car enthusiasts can draw the conclusion that the strength of the same volume steel is much larger than that of aluminum alloy and titanium alloy, so the strength of qualified steel frame can be reassuring. 3. Take a comfortable, good steel elastic steel made of metal, can absorb the vibration when riding. Therefore, the steel frame will not be as uncomfortable as the aluminum frame, especially for the travel frame. 4. Steel metal fatigue stronger than aluminum, so the same conditions of use, the life of the aluminum frame longer life. Of course, the steel frame also has its insurmountable shortcomings: 1. Light weight, today in the pursuit of lightweight equipment, the quality of 7.8g / cm3 steel so that everyone does not encourage him. Although light steel construction, while pumping pumping technology wall is very thin, but the weight of the steel is difficult to reduce to 1600 grams or less. Many aluminum frame weighs only about 1400 grams. This is a competitive framework, rarely seen the reasons for the steel frame. 2. Rusted, relative to other materials, steel is relatively easy to rust. Rust can drastically reduce the strength of the steel, shortening its service life. (Such as BEARS these frames in order to prevent the problem of rust to the framework of the new tube coating), so we must take various measures to prevent rust. Steel Frame Electric Bicycle,Frame Steel Electric Bicycle,Steel Frame Electric Bike,Mountain Electric Bicycle QuZhou Benneng Vehicle Co.,LTD , https://www.cn-ebikes.com
2. The Main Application of Engineering Plastic Diaphragm Pump
3. The Working Principle of Engineering Plastic Diaphragm Pump
4.Parameters of Engineering Plastic Diaphragm Pump
Â
Model
Capacity
Head
Max discharge
Suction
Max grain
Max
Max air
(m3/h)
Â
pressure
(m)
Diameter
pressure
consumption
Â
(m)
(kgf/cm2)
Â
Φ(mm)
(kgf/cm2)
(m3/min)
QBY-10
0.8
50
6
5
1
7
0.3
QBY-15
1
50
6
5
1
7
0.3
QBY-25
2.4
50
6
7
2.5
7
0.6
QBY-40
8
50
6
7
4.5
7
0.6
QBY-50
12
50
6
7
8
7
0.9
QBY-65
16
50
6
7
8
7
0.9
QBY-80
24
50
6
7
10
7
1.5
QBY-100
30
50
6
7
10
7
1.5
5. About our Products:
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Engineering Plastic Diaphragm Pump for Corrosive Fluid
Model NO.: QBY
Performance: Corrosion
Body: Plastic
Head: 50m
Inlet: 10-100mm
Outlet: 10-100mm
Rate: 0.55-5.5kw
Color: Random
Trademark: SOLID
Transport Package: Polywood
Specification: 0.8-30m3/h
Origin: China
HS Code: 8413104090
 1. Brief Introduction of Engineering Plastic Diaphragm Pump
   This series of products are made of high quality engineering plastics or reinforced polypropylene as the pump body, with good physical properties, with F46 as diaphragm, tetrafluoro as ball, ball seat, suitable for acid, alkali and various organic solvents. Corrosive liquid, high viscosity, high viscosity, volatile, flammable, explosive, highly toxic liquid, ceramic glaze, fruit pulp, glue, oil tanker bottom oil recovery, temporary tank and so on can be exhausted and exhausted, especially to solve the problem of running, risking, dropping, leakage and not allowing empty rotation of the vane pump, which is the most popular in the country at present. A new type of pump, which uses compressed air as a power source, to distribute air through the reciprocating movement of the valve, drives the diaphragm to squeeze the conveying medium by the volume pump, which has the advantages of conveying machinery such as impurity pump, self-priming pump, mud pump, shielding pump, submersible pump and so on.WENZHOU SOLID MECHANICAL EQUIPMENT CO., LTD