I-GB / T 3091 "Ipayipi yensimbi edibeneyo yokuthuthwa kwamanzi oxinzelelo oluphantsi" (i-2015 version ye-standard version) ivunyiwe yiKomiti yeSizwe yoMgangatho kwaye ikhutshwe ngokusemthethweni, ukususela ngo-Juni 01, i-2016 ukuphunyezwa ngokusemthethweni;Ngelo xesha, i-original GB / T 3091-2008 version standard ayivumelekile ngokusemthethweni!
Ukutolikwa kwezibonelelo ezibalulekileyo zoMgangatho weSizwe omtsha:
1. Ubunzima obufakwe igalvanized — “Umgca osezantsi”
Kumgangatho omtsha wesizwe, kwi-zinc layer weight index of galvanized steel pipe ngokokuqala ngqa ukubeka phambili "iimfuno zomgca ophantsi"!Okukuthi: kuguqulelo oludala lomgangatho kuphela “imiqathango ekuxoxiswene ngayo” ngesiseko sokunyuswa “kwemibhobho yentsimbi ngaphakathi nangaphandle komphezulu wegalvanized layer unit area ubunzima bubonke abufuneki bube ngaphantsi kwe 300g/m²” iimfuno ezisisinyanzelo zomgangatho.
Ngenxa yoko, ubomi obuqhelekileyo bombhobho wensimbi bukwandiswa ubuncinane nge-30% !!
2. Ukuphela kombhobho
Imibhobho yentsimbi enobubanzi bangaphandle obungekho ngaphezulu kwe-114.3mm(i-intshi ezi-4 okanye ngaphantsi) kufuneka ibe sicaba ngoomatshini (ingabi nazibhari ekupheleni).
3. Lungisa i-welding yeziphene
Emva kohlaziyo lomgangatho omtsha, ukulungiswa kweziphene kuguqulwa kube: umthungo othe tye ombane odibeneyo umbhobho wentsimbi kunye nobubanzi obungaphandle obungaphantsi kwe-219.1mm ayivumelekanga ukulungisa i-welding.
Uthelekiso: I-GB/T3091-2008 ichaza ukuba "umbhobho wentsimbi onobubanzi obungaphandle obungekho ngaphezulu kwe-114.3mm awuvumelekanga ukulungisa i-welding, umbhobho wentsimbi onobubanzi obungaphandle obungekho ngaphantsi kwe-114.3mm, unokulungisa iziphene kwisiseko sesinyithi kunye ne-weld."
4. Ubukhulu bodonga
Umgangatho omtsha uchaza ixabiso elincinci lobunzima bodonga olubizwa ngokuba ngumbhobho wensimbi, oko kukuthi, iThebhile 1 "I-diameter ye-Nominal, i-diameter yangaphandle, i-Nominal Wall thickness kunye ne-uncircularity ye-Steel pipe ene-diameter yangaphandle engekho ngaphezu kwe-219.1mm" yongezwa, enika i isiseko esithe ngqo soyilo kunye nokukhethwa kwezinto zeyunithi yoyilo lobunjineli.
Ø Umbhobho wentsimbi kunye nobukhulu bodonga oluncinci ngaphantsi ** encinci ayivumelekanga ukuba yenze umgangatho we-GB / T3091-2015 !!
5. Uphawu lombhobho wentsimbi
Umgangatho omtsha uthi: "Ukumakishwa kwemibhobho yentsimbi kuya kubandakanya oku kulandelayo: igama lomenzi okanye uphawu lokuthengisa, inombolo yomgangatho wemveliso, inombolo yentsimbi yentsimbi, inkcazo yemveliso kunye nenombolo yesazisi sokulandelelwa."
Uphawu lombhobho wensimbi luqukethe ileyibhile yemveliso kunye nekhowudi yomzimba wombhobho.Ukuba kukho naluphi na ulwazi olungasentla olulahlekileyo, akukho mthethweni.
Ixesha lokuposa: Jul-09-2022