**Price Guide for Stainless Steel Screw Vacuum Pumps**
The price of stainless steel screw vacuum pumps is significantly affected by factors such as material, pumping speed, vacuum degree, and brand. The following is a detailed price analysis and selection recommendations:
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**1、 Overview of Price Range (Single Unit)**
|* * Type/Drawing Speed * * | * Domestic Price (10000 yuan) * * | * * Import Price (10000 yuan) * * | * * Applicable Scenarios * *|
|---------------------|---------------------|---------------------|--------------------------|
|* * Small (5~50 m3/h) * * | 3~15 | 15~50 | Laboratory, small freeze dryer|
|Medium size (50~200 m3/h) * * | 15~40 | 50~120 | Pharmaceutical and electronic coating|
|* * Large scale (200~2000 m3/h) * * | 40~150 | 120~300+| Chemical, semiconductor, lithium battery drying|
|Multi level/ultra-high vacuum (<0.01 Pa) * * | 80~300+| 200~600+| Aerospace, nuclear industry, scientific research|
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**2、 Key factors affecting prices**
1. * * Material grade**
-* * 304 stainless steel * *: Basic version, 30-50 yuan more expensive than cast iron (such as about 80000 to 120000 yuan for 10 m3/h models).
-316L stainless steel: resistant to Cl corrosion, priced 20-40 yuan higher (approximately 120000 to 180000 yuan for the same model).
-Hastelloy/Titanium Alloy: Corrosive environment, priced 2-3 times higher than 316L (e.g. over 1 million yuan for 50 m3/h).
2. * * Vacuum performance**
-The maximum vacuum has been increased from 10 Pa to 0.1 Pa, with a price increase of 30-50.
-The price of multi-stage series systems (such as screw+Roots) doubles, but they cover a wider vacuum range.
3. * * Brand premium**
-* * Domestic * * (such as Hanzhong and Feixuan): High cost-effectiveness and fast after-sales response.
-Imported products (such as Leybold and Edwards): high precision, long lifespan, and price 2-4 times higher than domestic products.
4. * * Additional configurations**
-Variable frequency control:+15~25 cost (energy-saving and cost recoverable).
-Explosion proof certification (Ex d Ⅱ BT4) * *:+ 30~50.
-Magnetic coupling seal: 20-35% more expensive than mechanical seal.
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**3、 Typical industry application price reference**
|* * Industry * * | * * Requirement Parameters * * | * * Recommended Configuration * * | * * Budget (10000 yuan) * *|
|------------|--------------------------|--------------------------------|---------------------|
|* * Pharmaceutical * * | 50 m3/h, 1 Pa, oil-free | 316L single-stage screw pump+water cooling | Domestic: 25~35<br>Imported: 60~90|
|Semiconductor * * | 100 m3/h, 0.1 Pa, ultra clean | Multi stage system (screw+molecular pump) | Domestic: 80~150<br>Imported: 200~400|
|Chemical industry * * | 200 m3/h, 10 Pa, corrosion-resistant | 316L+PTFE coating, explosion-proof motor | Domestic: 40-70<br>Imported: 100-180|
|* * Food * * | 20 m3/h, 50 Pa, NSF certification | 304 stainless steel, air-cooled | Domestic: 10-18<br>Imported: 30-50|
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**4、 Cost optimization suggestions**
1. * * Select as needed**
-Example: If the actual required vacuum degree is 10 Pa, there is no need to pursue the 0.1 Pa model (which can save 30 costs).
2. * * Domestic substitution**
-Domestic mid-range brands (such as Korei and Dongfang Pump Industry) have performance close to imports and prices are 40-60% lower.
3. * * Long term operation and maintenance**
-Choosing a modular design for the pump body can reduce maintenance costs by 50% (such as replacing the rotor separately instead of the entire machine).
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**5、 Hidden Cost Tips**
1. * * Installation and debugging * *: Approximately 5-10% of the equipment price (higher for complex systems).
2. * * Spare parts inventory * *:
-Rotor set: Domestic 30000 to 80000 yuan, imported 100000 to 300000 yuan.
-Mechanical seal: Domestic price ranges from 5000 to 20000 yuan, while imported price ranges from 20000 to 50000 yuan.
3. Energy consumption comparison:
-Variable frequency models are 50000 yuan more expensive, but the annual electricity cost savings can reach 100000 to 200000 yuan (for continuous operation).
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**6、 Comparison of procurement channels**
|* * Channel * * | * * Advantages * * | * * Disadvantages * * | * * Suitable for Customers * *|
|---------------|------------------------|------------------------|---------------------|
|* * Factory direct sales * * | Transparent prices, support customization | Minimum order quantity requirement (usually ≥ 2 units) | Medium and large enterprises|
|* * Agent * * | Fast local service | Price increase of 10-20 | Small and medium-sized projects|
|* * Cross border e-commerce * * | Multiple options for imported brands | Long after-sales cycle | Urgent need for imported equipment|
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**Summary: Stainless steel screw vacuum pumps range in price from 30000 yuan to several million yuan, and require precise matching based on the characteristics of the medium, vacuum degree, and pumping speed. Suggest providing the following parameters to obtain an accurate quotation:
1. Extraction rate (m3/h)
2. Extreme vacuum (Pa)
3. Gas composition (whether it contains corrosive/particulate matter)
4. Explosion proof/certification requirements
**Note: For long-term high load operation scenarios, it is recommended to prioritize 316L material and variable frequency configuration. Although the initial investment is high, the overall cost is lower.
