ZHAOHAN VACUUM PUMP CO.,LTD.

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Quality assurance

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Quality assurance
Assure our high products quality, the company carry out 100% performance testing for all orders. Our strict quality control system and process guarantee that our products are produced according to the highest industrial standards.

Spare Parts Quality Control


To assure our pumps reliable performance and long using life, we are using top quality spare parts.
◆ Bearing: NSK/ Timken/ FAG/ SKF Bearing
◆ Mechanical Seal: John Crane Mechanical Seal
◆ Gland Packing: Shield Ramie/ Graphite Gland Packing

Quality Control During Production Process


To assure our pump quality, we carry out strictly quality inspection process during production process:
◆ Casting Material Inspection
◆ Casting Dimension Inspection
◆ Welded Part Material Inspection
◆ Welded Part Dimension Inspection
◆ Dye Penetrant Inspection For Welded Parts
◆ Machining Dimension Inspection
◆ Balance Testing For Rotor
◆ Hydrolic Pressure Testing For Casing And Cover
◆ Dimension Inspection For All Finished Parts Before Assembling

Details Determine Success


To meet our client’s higher quality requirement, we pay more attention to all slight items:
◆ Sand Blasting for pump parts to get better finishing surface
◆ Add extra machining process to assure flanges in better quality
◆ Add bearing protection guard according to europe safety requirement
◆ Add auto drain valve

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Copyright © 2016 www.zhaohanpump.com All rights Reserved.  Tel:0086-533-3586225  Address:No.105 INDUSTRY ZONE , ZIBO CITY, SHANDONG, CHINA