pipes and fittings

Sure Union International Ltd. is a supplier of various piping related products as well as sanitary items(include toilet seat and other bathroom accessories). Its business scope includes Pex-Al-Pex Pipe (or multilayer pipe ), pex pipe, PPR pipe, fittings and tools for these pipes, valves, faucets, drainage systems, bathroom shower, woven flexible hoses and other PVC and/or PE hoses.

Thursday, January 06, 2005

PE products FAQ - part 2

Are PE pipe and fittings safe for use in homes? *Reference ASTM and NSF performance and health standards.
Yes, PE is safe for use in the home. As answered above it is a polymer composed of only carbon and hydrogen atoms. PE is commonly used for food containers (milk bottles, plastic food bags, etc.) when the plastic has received approval to NSF International's standards health effects applications by a third party certifying agency. Examples of such standards are NSF 14 and NSF 61.
What is ASTM?
ASTM (American Society for Testing & Materials) is an independent, not-for-profit standards writing organization. It promulgates standards in many diverse technical disciplines. ASTM is the forum for a majority of standards in the USA, especially those related to plastic materials and products testing. ASTM writes standards and conducts educational training seminars (Specifications, Test Methods and Guides. ASTM does not conduct testing, listing, certifying, or enforcement of its standards.
What is NSF?
NSF (NSF International) is an independent, private, not-for-profit, 3rd party certification, testing, and standards writing organization. NSF is accredited by ANSI, (the American National Standards Institute), RvA, (the Dutch Raad voor Accreditatie), and SCC, (the Standards Council of Canada) for its testing, standards writing, and certification programs. NSF writes consensus standards for product, material, and system assessment. NSF provides an array of testing services to many different industries. NSF provides the plumbing industry services for items such as pipes, fittings, valves, pumps, water heaters, sinks, showers, toilets, faucets, controllers, filters, materials, and ingredients. NSF does conduct testing, listing, certifying, and enforcement of its standards.
What is PPI?
PPI (a.k.a. the Plastics Pipe Institute) is a trade organization whose members include plastic manufacturing companies, plastic piping product manufacturing companies, related equipment and chemical suppliers and educators and consultants to the plastic pipe industry.
What is ASTM D 3350?
This is an ASTM Standard which provides a cell classification method for classifying plastics. When classified under D 3350 the plastic material receives an alphanumeric designation, which identifies its mechanical and chemical properties. It is a shorthand method for describing a plastic material.
What is NSF Standard 14?
ANSI/NSF Standard 14 Plastic Piping System Components and Related Materials is a consensus standard promulgated by NSF International. This standard enables comprehensive assessment of plumbing system products, materials, and ingredients for health effects, quality control, quality assurance, marking, material property requirements, long term strength evaluation via PPI TR-3, and short term product performance to various standards such as ASME, ASTM, ASSE, etc.
What is NSF Standard 61?
ANSI/NSF Standard 61 Drinking Water System Components-Health Effects is a consensus standard promulgated by NSF International. This standard enables in depth assessment of a variety of drinking water system products and materials for health effects. This standard is used to evaluate a product for health effect concerns only.
What is PPI TR3?
(Plastic Pipe Institute's Technical Report 3) PPI TR3 is a standard published by PPI which describes, in depth the testing, calculations and theory by which plastic materials are tested to determine their long term strength properties primarily for pressure piping applications. These long-term strength properties (up to 50 years or more) are published, by material, in PPI TR4, which lists this property as an HDB or hydrostatic design basis. These HDBs are then used by engineers in designing plastic piping products for excellent long term service.


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