Two Stage Screw Air Compressor Supplier & Factory serving Nigeria

A two-stage rotary screw compressor divides the overall compression process into two distinct mechanical stages. Air is compressed to an intermediate pressure in the first stage, cooled by atomized lubricant injection (inter-stage cooling), and then compressed to the final working pressure in the second stage. This process lowers the compression ratio across each rotor set, significantly reducing internal back-leakage across rotor sealing lines and bringing the compression closer to isothermal efficiency. In Nigeria, where ambient temperatures frequently reach 40°C+, this translates to roughly 15-25% energy savings and considerably lower operating thermal stress on oil and mechanical seals.

Yes. Our industrial units utilize permanent magnet variable-frequency drives (PM VSD) with smart auto-restart and low-surge start control algorithms. Unlike traditional Direct-On-Line (DOL) or Star-Delta starters that pull 4 to 7 times the running current on startup—often tripping factory backup diesel generator breakers—our VFD soft starters never exceed 100% of full load amperage during start-up. Additionally, the integrated smart PLC monitors phase loss, under-voltage, and reverse phase conditions automatically, protecting the motor and screw airend from grid switching surges.

Standard models (15kW to 75kW) maintain a production lead time of 15 to 20 business days at our Shanghai factory, while custom-engineered units (90kW to 250kW+) take approximately 25 to 30 days. Transit time via direct container vessels from Shanghai Port to Lagos (Apapa/Tin Can Island) is typically between 32 to 42 days depending on the carrier line (e.g., Maersk, CMA CGM, COSCO). We supply full export documentation including Clean Report of Inspection, Form M compliance documents, and Bill of Lading sets.

We supply a mandatory 2-year routine maintenance spare parts kit with each export shipment (consisting of high-efficiency oil filter elements, micro-glass fiber air filtration cartridges, spin-on or flanged oil air separator cores, and seal repair sets). All wear components utilize standard metric industrial threading and sizing, allowing factory technicians to source interchangeable consumables locally if emergency replenishments are needed without risking machine stoppage.

Absolutely. We build all export-grade machines destined for Nigeria to the local 415V / 3 Phase / 50Hz electrical configuration. The internal control transformers, cooling fan motors, and main drive inverters are specifically rated for high-ambient continuous duty at 415V, complete with tropicalized varnish coating on PCB circuit assemblies to protect against tropical West African atmospheric humidity and coastal salt mist corrosion.