PVC yog siv dav hauv cov kav dej thiab cov kav dej phwj, flanges yog qhov me me flanges 200 thiab qis dua, cov lus qhia tshwj xeeb yog DN25 (dhau 32, cov yeeb nkab sib txuam 32), DN40 (dhau 45, txuam 45 yeeb nkab), DN50 (dhau 57), DN80 (dhau) 89), DN100 (bore 108), DN150 (bore 159) ... Cov flanges saum toj no yog qhov pib 4 qhov ...
Nyeem ntxiv