Qalabka tuubbada
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ASTM A234 WPB & WPC Pipes Fottipts oo ay ka mid yihiin xusullada, Tee, yareynta
Tilmaamahan qeexitaanku wuxuu ka daboolay kaarboonka birta iyo alloy birta ku dhejiska ah ee dhismayaasha iyo dhisme-hoosaad. Kudiirradan ayaa loogu talagalay in lagu isticmaalo tuubbada cadaadiska iyo burooyinka weelka cadaadiska cadaadiska ee loogu talagalay adeegga heerkulka dhexdhexaadka ah iyo kuwa sare leh. Qoraallada ku rakiban waa inay ka koobnaadaan birta lagu dilo, caloosha, baararka, taarikada, badeecadaha tuubbada tuubbada leh ama wax lagu dhejiyo oo bir bir ah oo lagu daray. Dhaqaalaha ama qaabeynta qalliinka waxaa lagu fulin karaa hamrin, riixid, daloolin, soo-saaritaan, xanaaq, duubin, mindiyo, ama isku darka laba ama in ka badan oo hawlgalladan ah. Nidaamka qaab-dhismeedka waa in lagu dabaqaadaa si aysan u soo saari doonin cilladaha waxyeelada leh ee ku rakibayaasha. Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. Ku rakibidda waa in lagu soo rogaa tijaabada kacsanaanta, tijaabada adag, iyo baaritaanka hawo-mareenka.