Questions regarding PP container standards
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I work in design at a factory that manufactures polypropylene (PP) equipment, but I have found that the relevant standard, \"Plastic Equipment HG20640-97\", is no longer in use. The title of this standard reads: \"This standard specifies the requirements for the design, manufacturing, inspection, and acceptance of stationary equipment fabricated from rigid polyvinyl chloride laminates or modified polypropylene laminates, as well as stationary equipment with a steel shell and soft polyvinyl chloride extruded panels as lining.\" ”The PP equipment produced by our factory is all made from pure PP extruded sheets (as far as I know, the vast majority of manufacturers in this industry use such sheets), rather than modified polypropylene laminates; so isn’t this standard not applicable in that case? Furthermore, this standard does not specify how this modified polypropylene was modified – whether with calcium carbonate, barium sulfate, or some other modification method. If this standard truly doesn’t apply, then the current polypropylene equipment manufacturing industry is one without any standards to follow. I’m not sure if my judgment is correct
It seems there aren’t many polypropylene-based devices made for use in tanks. Currently, polypropylene appears to have a promising future in the field of anti-corrosion equipment
No new standards have been identified; the product standards are outdated and the material standards fail to keep up. Currently, extruded sheets are being used, all in accordance with enterprise standards. In Europe, there is EN12573: \"Welded, fixed, pressure-free thermoplastic tanks\"
No new standards have been identified; the product standards are outdated. HDPE polyethylene is not included, yet HDPE polyethylene plastic equipment is widely used； Material standards are not keeping up; currently, extruded sheets are being used, all of which are based on enterprise standards. Europe has EN12573 \"Welded, fixed, pressure-free thermoplastic tanks\" which can serve as a reference
HG/T20640 can be used as a reference
1# zidian1982 The standards in Europe are relatively simple. There are also authoritative international standards. Domestically, work is also underway to draft GB standards. Are you willing to become an HG industry standard? If you wish, I might be able to help you get the project off the ground.
This post was last edited by dorrly on 2009-5-8 at 11:13. We deal with PVC/FRP and PP/FRP FRP equipment; there aren’t many standards available for reference, only 20640. The person above mentioned that it’s possible to initiate a project – please send some information to my email so we can discuss it in detail: dorrly1982@163.com
Where are you a manufacturer from? What is the scale of the factory? Our company uses a lot of PP equipment, and we’re currently struggling to find a suitable supplier. I’m in Shijiazhuang, Hebei