The following is an analysis of the mainstream models and prices of Roots blowers, covering domestic and imported brands, to help you accurately select and control costs:
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**1、 Domestic mainstream brand models and prices (2024 market price)**
**1. （ZHANGGU）**
|* * Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Price (10000 yuan) | Features|
|------------|--------------|-----------|----------|------------|-----------------------|
|-50 | 1.25~5.2 | 9.8~58.8 | 1.5~7.5 | 0.8~1.5 | Economy type, three bladed rotor|
|-100 | 6.9~19.8 | 49~78.4 | 11~37 | 2.8~4.5 | Cast iron shell, low vibration|
|-200 | 21~100 | 58.8~98 | 45~250 | 8~18 | High flow, gear oil cooling|
**2. Changsheng (CSR)**
|* * Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Price (10000 yuan) | Features|
|------------|--------------|-----------|----------|------------|-----------------------|
|HC-501S | 0.8~4.5 | 9.8~49 | 0.75~5.5 | 0.6~1.2 | Compact Integrated Design|
|HC-801 | 5~20 | 49~78.4 | 15~55 | 2.5~4.0 | Variable frequency compatible, noise ≤ 78dB|
|HC-1501 | 18~60 | 58.8~98 | 75~160 | 7~14 | Heavy duty type, high temperature resistant design|
**3. （BST）**
|* * Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Price (10000 yuan) | Features|
|------------|--------------|-----------|----------|------------|-----------------------|
|BSR-50 | 1~5 | 9.8~49 | 1.1~7.5 | 0.7~1.3 | Export type, CE certification|
|BSR-125 | 8~25 | 49~78.4 | 18~45 | 3.0~5.2 | Stainless steel shaft, IP55 protection|
|BSR-200 | 30~120 | 78.4~98 | 90~315 | 10~22 | Dual oil tank lubrication, long-life design|
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**2、 Imported brand model and price**
**1. **
|* * Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Price (10000 yuan) | Features|
|----------------|--------------|-----------|----------|------------|-----------------------|
|Delta Blower GM | 10~60 | 50~100 | 15~200 | 25~60 | Energy saving, noise ≤ 72dB|
|Delta Hybrid | 20~150 | 80~120 | 55~355 | 50~120 | Roots+screw composite technology|
**2. Japan Taiko**
|* * Model * * | Airflow (m3/min) | Pressure (kPa) | Power (kW) | Price (10000 yuan) | Features|
|------------|--------------|-----------|----------|------------|-----------------------|
|TRB-50 | 1~6 | 10~50 | 1.5~11 | 3~6 | Precision machining, with a lifespan of 100000 hours|
|TRB-150 | 15~80 | 50~100 | 37~220 | 18~40 | All stainless steel, corrosion-resistant|
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**3、 In depth analysis of price influencing factors**
1. * * Pressure level premium**
-49kPa base price → Price increases for every 9.8kPa increase:
-Domestic: 8-12
-Import: 15-20
2. Comparison of Material Costs**
|* * Material * * | Price coefficient (vs cast iron) | Applicable scenarios|
|-------------|-------------------|-----------------------|
|Cast Iron HT250 | 1.0 | Conventional Air Transport|
|Stainless steel 304 | 1.8~2.2 | Wet/weakly corrosive environment|
|Titanium alloy | 4.5~6.0 | Strong acid/chlorine gas transportation|
3. * * Configuration surcharge**
-Variable frequency control:+15000~30000 yuan
-Explosion proof certification:+ 20~30
-Muffler set:+8000-20000 yuan
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**4、 Select cost-effective solutions**
**Scenario 1: Sewage treatment aeration (air volume 20m3/min, pressure 58.8kPa)**
-* * Economic plan * *: -100+ordinary muffler ≈ * * 42000 yuan**
-* * Quality Plan * *: Changsheng HC-801+frequency converter ≈ * * 58000 yuan**
-* * High end solution * *: GM45 ≈ * * 320000 yuan**
**Scenario 2: Aquaculture oxygenation (air volume 8m3/min, pressure 39.2kPa)**
-* * Corrosion resistant solution * *: BSR-50 (stainless steel) ≈ * * 35000 yuan**
-* * Mute scheme * *: Taiko TRB-50 ≈ * * 52000 yuan**
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**5、 Procurement Avoidance Guide**
1. * * Pseudo low price recognition**
-Possible pitfalls below market price of 30:
-Second hand renovation (check nameplate production date)
-Cutting corners (shell thickness not meeting standard 80)
2. * * Key acceptance indicators**
-Actual measured air volume deviation ≤± 5 (GB/T 1236 standard)
-Bearing temperature ≤ 85 ℃ (continuous operation test for 4 hours)
3. * * After sales terms**
-Warranty period: ≥ 1 year for domestic products, ≥ 2 years for imported products (core components)
-Response time: on-site service within 48 hours after the malfunction
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**6、 Price Trends in 2024**
-* * Domestic fans * *: Average price drops by 5-8 (competition due to overcapacity)
-* * Imported fans * *: Rising by 10-15 (due to exchange rate and tariff impact)
-* * Accessory Cost * *: Stainless Steel Material Increases by 20 (Nickel Price Fluctuations)
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**Summary * *:
-* * Budget<50000 * *: Choose domestic mid-range models (/HC series)
-* * Budget of 5-150000 * *: Consider domestic high-end or Taiwanese brands (such as Zhanyu)
-* * Key process * *: Priority imported brands (/Taiko)
Suggest requesting the manufacturer's * * performance test report * * and conducting on-site inspections of the prototype's operation to avoid relying solely on parameter selection.
