Based on the following three points, the Iron Box can better protect the tea packaging and protect the tea.
For the current market, iron box packaging is widely used, such as tea iron boxes. Due to the diversity of printing on the surface of the iron box and good gloss, it is more beautiful and high-grade. The reason why people like to use iron boxes for packaging is that the compatibility strength of iron boxes is good and they are suitable for preservation. In recent years, there are all kinds of packaging materials on the market. From wooden boxes, plastic boxes to iron boxes, among which iron boxes are the first choice for tea packaging. Tea Tin Box,Tea Iron Can,Tea Iron Boxes,Gift Box Tea Tin Can,Tin Can Dongguan Tielangtou Hardware Products Co., Ltd , https://www.tinboxtlt.com
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**Project Description**
Our company specializes in manufacturing the SN triple screw pump, designed according to national standards (GB1088789). This type of pump is a rotor displacement pump that operates based on the principle of screw meshing. As the screws rotate within the pump housing, they create a sealed cavity that moves the fluid along the axial direction, ensuring a continuous and stable flow. It’s ideal for applications requiring consistent pressure and minimal pulsation.
The SN series three-screw pump is suitable for transferring non-corrosive oils and similar lubricants. It is widely used in the oil industry, including for lubricating oils, fuel oils, and other non-abrasive liquids. The pump is known for its high efficiency, reliability, and ease of maintenance.

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**Viscosity Range & Operating Conditions**
This pump can handle liquids with viscosities ranging from 3.0 to 760 cSt (1.2 to 100 °E). For high-viscosity fluids, heating may be required to ensure smooth operation. The maximum operating temperature is typically not more than 350°C, depending on the application.
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**Applications**
The SN and 3G series three-screw pumps are commonly used for transferring non-corrosive, solid-free mineral oils, animal oils, vegetable oils, and other lubricant liquids. They are particularly effective for media with viscosities between 3 and 760 cSt, and their working temperature should generally remain below 200°C.
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**Key Advantages**
1. Wide range of pressure and flow rates (0.2–600 m³/h, up to 6.3 MPa).
2. Suitable for a broad range of liquid viscosities.
3. Low internal inertia allows for high-speed operation.
4. Excellent self-priming capability, eliminating the need for a bottom valve.
5. Smooth and steady flow with minimal vibration and noise.
6. Less sensitive to gas or dirt ingress compared to other rotary pumps.
7. Robust design, easy to install and maintain.
8. Self-priming feature ensures reliable operation.
9. Available in various configurations (horizontal, flange, vertical).
10. Can be customized with heating or cooling systems as needed.
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**Performance Features**
- Stable operation with low noise levels.
- No agitation of the medium during transport.
- Minimal pulsation in both flow and pressure.
- High self-priming ability, no need for pre-filling.
- Long service life and high durability.
- Equipped with safety valves for enhanced operational safety.
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**Structure Overview**
The three-screw pump consists of the pump body, liner, cover, driver screw shaft, two driven screw shafts, mechanical seal, and other accessories. A safety valve is installed on top of the pump body, composed of a valve body, seat, trim, spring, and adjustment screw. It ensures safe operation under varying pressure conditions.
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**Performance Table (at 1450 rpm)**
Speed n=1450r/min
Model
ΔP (MPa)
Viscosity (mm²/s)
1
15
35
75
150
350
750
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
Flow (L/min)
Power (kW)
210-46
0.5
193
2.31
200
2.31
205
2.31
206
2.49
207
2.78
208
3.26
152
3.99
1.0
179
4.06
193
4.06
200
4.06
203
4.24
205
4.53
206
5.01
209
5.74
1.5
166
5.81
185
5.81
196
5.81
200
5.99
203
6.28
205
6.76
207
7.49
2.0
154
7.56
179
7.56
192
7.56
198
7.74
201
8.03
204
8.51
206
9.24
2.5
142
9.31
172
9.31
189
9.31
195
9.5
199
9.78
202
10.3
205
11
3.0
Â
Â
166
11.1
185
11.1
192
11.2
197
11.5
201
12
204
12.7
3.5
Â
Â
160
12.8
182
12.8
190
13
195
13.3
200
13.8
203
14.5
4.0
Â
Â
Â
Â
178
14.6
188
14.7
193
15
198
15.5
202
16.2
For parameters of other models, please contact us via email.
1. Tightness of the iron box.
Tea will deteriorate when exposed to the air, so the first key to storing tea is to seal it. The iron box has a low oxygen permeability, which has a good barrier to the air and can better protect tea.
2. Reducibility of iron box.
Chemical action of the iron box: good reducibility, the tin in the iron box will react with the oxygen remaining in the container during filling, which is the reduction of tin. The reduction of tin can reduce the chance of oxidation of tea nutrients and prolong the storage life of tea
3. Light opacity of iron box
Light is easy to cause deterioration reaction of tea and change of food quality, especially green tea is easy to deteriorate in case of light. The lightproof of the iron box makes the preservation rate of tea higher. In addition to keeping the original flavor of tea, even the color will not change.
CE Approved SNH Three Screw Marine Oil Pump
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**Basic Product Information**