Processing Machinery
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HDPE pipe black specks and impurities
Problem Phenomenon
Black specks appear on the surface/inside of the pipe, and drinking water pipes are directly rejected.
Cause Analysis
Raw material contamination or carbonized material falling off from the barrel and head; irregular startup and shutdown causes the material to be heated for a long time and carbonized.
Solution
①Use clean raw materials; ②regularly clean production equipment; ③standardize the startup and shutdown process, empty or cool down before shutdown; ④check the screen condition.
Key Takeaway
Black specks = contamination or carbonization; cleanliness management is the defense line.
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