Our Service

We provide comprehensive service support for perforated filter cartridges, covering product selection, customization, and long-term operational assistance. Our goal is to ensure each cartridge performs reliably under real working conditions, not just on paper.   Technical Consultation & Selection Our engineering team works closely with customers to evaluate operating pressure, flow rate, filtration accuracy, and working media. Based on these factors, we recommend suitable hole diameter, open area, material grade, and structural design to achieve stable filtration performance and long service life.   Custom Manufacturing We offer fully customized perforated filter cartridges to match specific system requirements. Options include custom diameters and lengths, different perforation patterns, flange or threaded connections, and reinforced structures for high-pressure or high-temperature applications. All cartridges are manufactured with strict dimensional control to ensure proper fit and easy installation.   Quality Inspection & Testing Each perforated filter cartridge is inspected before delivery, including dimensional checks, surface finish inspection, and structural integrity verification. For critical applications, additional inspections such as weld strength checks or visual bore consistency checks can be provided upon request.   Application Support Our perforated filter cartridges are widely used in oil & gas, chemical processing, water treatment, food & beverage, and industrial fluid systems. We provide application-specific support to ensure reliable performance in demanding environments.

We provide specialized services for Johnson Screen Tubes, covering technical consultation, custom manufacturing and quality inspection. Our service focus is to ensure that each screen tube is properly selected and manufactured according to real well conditions, helping customers achieve stable sand control and long-term groundwater production.   Johnson Screen Tubes are commonly used in deep water wells, municipal water supply systems, and industrial groundwater projects. Because well depth, formation characteristics, and water quality vary from project to project, professional service support plays a key role in product performance and service life.   Technical Consultation & Engineering Support Our service begins with technical consultation at the project planning stage. Based on available geological data and operating requirements, we assist customers in selecting suitable screen parameters.   Engineering support includes: Slot size recommendation based on formation grain size Material selection for corrosion resistance and strength Structural strength evaluation for deep well installation Open area optimization to reduce head loss Design confirmation before production This service helps minimize risks related to sand intrusion, clogging, and premature screen failure.   Custom Manufacturing Service Johnson Screen Tubes are manufactured using continuous V-shaped wire wrapped around longitudinal support rods, with each contact point resistance welded to form a rigid structure. All products are manufactured according to confirmed technical drawings.   Custom manufacturing options include: Tube diameter and section length Slot size range for different sand conditions Threaded, flanged, or welded end connections Stainless steel grades such as SS304, SS316, or SS316L Surface finishing based on groundwater conditions Each manufacturing step is controlled to ensure consistent slot accuracy and structural integrity.   Quality Control & Inspection Quality control is integrated throughout the production process. Raw materials are inspected before fabrication, and finished screen tubes are checked against agreed specifications.   Inspection items include: Slot size and uniformity measurement Welding quality and joint strength inspection Dimensional tolerance verification Visual surface inspection Material traceability control Only products that meet internal quality requirements are released for delivery.     Service Value Our Johnson Screen Tube services are designed to support reliable well performance over the long term. By combining engineering support, controlled manufacturing, and consistent quality inspection, we help customers reduce maintenance requirements, improve water production efficiency, and extend the service life of their wells.