Being a quality conscious organization, we maintain total quality
system in our production process as well as marketing process. Stringent
quality checks are conducted at every stage, beginning from sourcing
quality raw material to packaging and till the delivery of the product.
has many years of experience in extrusion and injection moulding and is
the market leader and pioneer in the manufacture of HDPE piping system,
PPR piping system, Multilayer piping systems in China. Our quality
control systems include:
■ Test and acceptance of incoming material.
of excel performance is one of the qualification with produce the
topping piping system. Risong company generally adopts TOP QUALITY raw
materials from South Korea or north Europe in the production of pipes
and fittings.Those materials are recognized as the top raw material by
the professional in this vocation. The preferable performance of those
materials and their stability establish the high quality station of
Risong piping products and fittings on the markets.
■ In-process inspection and test.
and qualified employees are very important. Most of workers in Risong
are the experts with more than 10 years' experience in producing
pipings and fittings in China. Their speciality greatly help us to find
out the main manufacturing defects during our production, so that we can
avoid the unqualified products on the markets timely.
Dimensional test and visual test will be made in the whole production process and packings. Any manufacturing defect can be found out, in case it happens.
prepraduction samples by our quality assurance department are tested by
the laboratory technicians for:
(1) Surface finish;
accuracy of test samples;
(3) Date from extrusion and injection moulding
The goods will be released for production only if
optimal test results are achieved. These tests are carried out at the
beginning of each production series to ensure perfect quality for piping
■ Final Inspection And Test.
Finished products are only released to stock when all tests and inspections conform to the prescribed procedures, which include:
(2) Melt flow rate;
(3) Longitudinal reversion;
(4) Tensil strength;
(5) Elongation at break;
(6) Thermal stability;
(7) Internal hydrostatic pressure test.
Risong company have passed ISO9001:2000 certificate. The products have CE certifcate,WRAS certificate and different test reporters iuused in creditable test center: