FAQ

QualRotate compressors are used in oil & gas, petrochemical, and energy industries, excelling in offshore platforms, FPSO, FLNG, and onshore pipeline applications.

We offer Turbomachinery Compressors (centrifugal & axial)  and Reciprocating Compressors.

Turbomachinery Compressors are better for high flow, continuous operation, ideal for large-scale applications, while Reciprocating Compressors excel at high pressure and precise control for variable or demanding processes.

Our compressors feature high-efficiency impeller stage designs, compact structures, and excellent rotor dynamics, tested to ensure performance and stability in demanding environments.

Turbomachinery compressors feature optimized rotor dynamics, high aerodynamic efficiency, and continuous-duty capability, handling large flow rates and demanding industrial conditions.

Precision manufacturing, advanced sealing systems, and robust rotor designs minimize vibration and wear, ensuring stable operation and extended lifecycle under heavy-duty applications.

QualRotate provides service and support for process gas compressors, including complete unit retrofit, compressor consulting, spare parts and repair services, control systems, and rotating equipment maintenance and management solutions. These services support both centrifugal and reciprocating compressors across upgrade, overhaul and maintenance stages.

Our service and support experience covers oil and gas, petrochemical, LNG, offshore platforms, refining and related process industries. We support compressors operating in demanding conditions where reliability, turnaround time and lifecycle performance are critical.

Yes. QualRotate provides service and support for both centrifugal and reciprocating compressors, including component repair, spare parts, overhaul services and control system support, based on proven engineering practices and field experience.

Yes. Support covers both on-site major overhaul and factory-based maintenance. Overhaul and repair can be performed at customer sites or at QualRotate’s own facilities in Liaoning. A new digital factory in Zhejiang is planned to be commissioned by the end of 2026 to further expand overhaul capacity.

By integrating engineering evaluation, in-house manufacturing, repair capabilities and coordinated field service, QualRotate helps customers shorten turnaround time and restore compressor operation efficiently while maintaining safety and quality requirements.

Yes. QualRotate supplies spare parts and repair services for compressors from multiple mainstream OEM brands. Our experience covers critical components such as bearings, dry gas seals, rotors, casings and reciprocating compressor parts.

Our repair services include casing repair welding, rotor journal restoration, bushing replacement, precision machining and component refurbishment, helping recover dimensional accuracy, sealing performance and operational stability of rotating equipment.

QualRotate provides compressor control system services, including hardware and software engineering, anti-surge and speed control, FAT and on-site SAT commissioning, ensuring safe operation, stable control performance and smooth start-up.

Yes. QualRotate offers rotating equipment maintenance and management systems that support condition monitoring and lifecycle data management, helping customers improve asset visibility, maintenance planning and long-term equipment reliability.

Process reciprocating compressors are designed for heavy-duty API 618 services such as petrochemical, refining, fertilizer, and gas transmission/injection. High-speed reciprocating compressors are more often used for gas gathering, processing, storage, and LNG-related duties where compact arrangement and higher operating speed are required.

QualRotate's reciprocating compressor portfolio covers both API 618 process-service compressors and ISO 13631-based high-speed separated compressors. For selected high-speed projects, API 618-based requirements can also be considered according to project scope.

The ZX Series is intended for petrochemical, refining, fertilizer, cold gas, methanol, ethylene, ammonia, nitric acid, urea, and natural-gas transmission/injection services. It is positioned for demanding process-gas duties requiring robust frame design and heavy-duty operation.

The ZXH Series is mainly used for natural gas gathering, processing, storage, and LNG-related duties. It is suited to field applications where higher operating speed, compact arrangement, and flexible deployment are important.

Yes. QualRotate can support skid-packaged reciprocating compressor solutions. The packaged scope can include the main driver or soft starter, pulsation dampers, coolers, separators, drain tanks, valves, process and auxiliary piping, lubrication and cooling consoles, local control panel, and optional HydroCom system.

Yes. Depending on project scope, QualRotate can support engineering deliverables such as MBO, P&ID, BOM, GA/FP/PA drawings, and instrument/logic-related documents to help customers coordinate design, procurement, and site execution more efficiently.

QualRotate's support is not limited to the compressor frame itself. For packaged projects, the scope can extend to vessels, piping, lubrication and cooling systems, local controls, and related execution support, depending on project definition.

Yes. In addition to compressor supply, QualRotate also provides reciprocating compressor spare parts and related service support, which can be combined with overhaul or field-maintenance requirements according to customer needs.

The choice depends mainly on service type, pressure level, operating speed, layout preference, and project conditions. For heavy-duty process applications such as petrochemical and gas transmission/injection, process reciprocating compressors are typically more suitable. For gas gathering, treatment, storage, and LNG-related field duties, high-speed reciprocating compressors are often the more practical option.