Air compressors rated for 20–30 bar (equivalent to 2–3 MPa) are classified as medium-to-high-pressure industrial equipment. They are commonly used in applications such as bottle blowing, laser cutting, and high-pressure testing. They are available in piston and screw configurations; selection should be based on specific air delivery requirements and usage frequency.
Below is a guide to the main types and common applications:
I. Key Types and Selection Criteria
Piston Air Compressors (Suitable for intermittent use, high pressure, and low air volume requirements):
Features: High maximum pressure (up to 30–40 bar), relatively simple structure, lower cost, and easy portability.
Applications: Gas cylinder pressure testing, pipeline pressure testing, and small-scale bottle blowing machines.
Screw Air Compressors (Suitable for prolonged, continuous, high-load operation):
Features: High and stable air output, low operating noise, and suitability for continuous 24-hour operation.
Applications: Large-scale industrial bottle blowing, laser cutting assist gas, and automated production lines.
II. Brands and Market Reference
For purchasing or checking specific technical specifications, consider the following well-known domestic and international brands:
Domestic Brands: Kaishan Group, Fusheng, Jaguar
International Brands: Atlas Copco, Ingersoll Rand