To ensure stable and reliable operation of on-site mechanical sealing equipment, Runhe Sealing implements strict, standardized and comprehensive factory inspection for all seal support systems before

delivery. Every product is thoroughly checked in accordance with drawing specifications, industry standards and customer requirements, ensuring stable performance, precise workmanship and qualified delivery

quality.
 
Our complete pre-shipment quality inspection covers all critical procedures, including material verification, surface coating, nameplate marking, instrument configuration, piping assembly, valve testing, welding

quality, internal cleanliness, fastener installation, sealing component assembly and personalized customer specifications. All items are inspected item by item to eliminate hidden quality risks.
 
During the inspection process, our technical team strictly verifies raw material consistency, paint color and coating thickness, and checks all nameplate information and instrument tag numbers for accuracy and

traceability. All nozzle ports are protected with sealing plugs, and every inlet, outlet, vent and drain port is clearly marked for convenient on-site installation and operation.
 
For Flush Plan 53B systems, professional inflation tools and complete supporting accessories are fully equipped before shipment. All loose parts and consumables are verified against packing lists, and finished

products are photographed for file archiving and full delivery traceability. Safety warning labels and operation signs are fully inspected to meet international safety standards.
 
All system instruments, including pressure gauges, level gauges and temperature components, are strictly verified in brand, specification, measuring range, material and interface dimensions to match actual

working conditions. The surface treatment of equipment, piping routing and valve assembly are fully checked according to official drawings. The installation orientation of shell-and-tube and plate heat

exchangers, as well as the internal cleanliness of surge tanks, pressure tanks and expansion tanks, are thoroughly confirmed.
 
Special attention is paid to welding quality control. All pipeline welds are inspected for uniform molding with no porosity, cracks, slag inclusion or incomplete penetration. Stainless steel welds are fully pickled and

passivated to ensure complete passivation film and anti-corrosion performance.
 
All gaskets, PTFE components, spiral wound gaskets and O-rings are strictly verified for model, material and applicability to process mediums. All fasteners are checked for correct material and strength grade.

Stainless steel fasteners are treated with anti-seize coating to ensure safe and stable assembly. Thread sealing workmanship, manual make-up pump welding quality, vent and drain valve status, and all metric,

imperial and ASME standard fittings are fully inspected.
 
In addition, all customized technical requirements from customers are strictly implemented and fully verified before shipment.
 

Quality comes from details, and reliability comes from precise craftsmanship. Runhe Sealing always adheres to refined and standardized factory inspection procedures. We strictly control every

production detail to ensure that every delivered mechanical seal support system is stable, reliable and fully compliant with technical standards.
 
In the future, we will continue to upgrade our manufacturing processes and quality inspection systems, providing global customers with high-quality products and professional after-sales service.

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