PVC Pipe Construction Environment And Matters
2021-07-07
(1) Kala izinga lokushisa eliphansi lendawo yokwakha kuqala, uma lingaphansi kuka-10℃, akukho ukwakhiwa okufanele kwenziwe;(2) amahora ayi-12 ngaphambi nangemva kokwakhiwa, thatha izinyathelo ezidingekayo zokugcina izinga lokushisa lasendlini lingaphezu kuka-10℃;(3) Uma ukwakhiwa kuphansi usimende, hlola ukuthi i-fl
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