مقالات, مطالب فنی و تخصصی صنعت پلی اتیلن
This report was developed and published with the technical help of the members of the PPI (Plastics Pipe Institute, Inc.). The members have shown their interest in quality products by assisting independent standards-making and user organizations in the development of standards
This procedure is intended for PA-11 fuel gas pipe (per ASTM D 2513) that has a grade designation (in accordance with PPI TR-4) of PA 3231 The principle of butt fusion is to heat two surfaces to a designated temperature, then fuse them together by application of a sufficient force
HVAC Applications is one of the chapters in the Plastics Pipe Institute’s PPI Handbook of Polyethylene Piping. Other topics to be addressed in the handbook will include design of polyethylene piping systems, joining procedures, engineering properties