Ngaphambi kokuthengaimibhobho yentsimbi yomthungo emikhulu enobubanzi obukhulu (LSAW), kufuneka ulandele imimiselo esele yenziwe ngaphambili, ubude, izixhobo, ubukhulu bodonga, imigangatho ye-welding kunye neemfuno ze-weld, ekufuneka zichazwe kakuhle ngaphambi kokuthenga.

1. Eyokuqala yinkcazo.Ngokomzekelo, i-800mm ikwabizwa ngokuba yi-DN800, kuquka i-820mm kunye ne-813mm ye-A kunye ne-B series, okanye i-diameter yangaphandle ye-800mm kufuneka ifuneke ngokucacileyo ukuphepha ilahleko engeyomfuneko.

2. Ubukhulu bodonga lombhobho wentsimbi womthungo othe tye kufuneka bube yi-16mm.Kungenzeka ukuba ubukhulu bokwenene bezinto eziluhlaza buya kuba yi-15.75mm kunye ne-16.2mm, kwaye kuya kubakho umehluko ophezulu okanye ophantsi.Ezi zitenxa eziqhelekileyo.Ngenxa yokuba imibhobho yentsimbi yomthungo ethe tye ngawo onke amaxabiso etoni, kuyimfuneko ukunxibelelana kwangaphambili ukuphepha ukungafani kobunzima.

3. Ubude obuqhelekileyo bombhobho wentsimbi yomthungo omkhulu-ububanzi obuyi-12m.Xa kufuneka kulungiswe, kufuneka kuthethwe kwangaphambili, kuba ixabiso lobude obumiselweyo liya kuba libiza kakhulu.Ukuba ayichazwanga kwangaphambili, iya kuba yi-9.87m ubude, kwaye umenzi ngokubanzi unika i-9.9m ngokuthe ngqo.
4. Izinto zokuthenga imibhobho yentsimbi yomthungo emikhulu enobubanzi obucacileyo kufuneka idityaniswe kakuhle, kwaye izixhobo azifanele zibe yi-OEM.Ukongezelela, izinto eziphathekayo kufuneka ziqinisekiswe, kwaye uluhlu lwezinto zokuqala zensimbi kufuneka zinikezelwe.Naziphi na iingxaki zezinto eziphathekayo ziya kubuyiselwa kwaye zibuyekezwe.

5. Umgangatho we-welding wokuvelisa kunye nokucubungula kufuneka uhambelane ne-arc ye-arc ye-arc ye-arc ye-automatic LSAW GB / T3091-2015, kunye nesiqinisekiso somgangatho wemveliso sifunekayo.Ukuba umgangatho awuhambisani neemfuno, imveliso iyasilela.
6. Xa kuthengwa imibhobho yentsimbi yomthungo emikhulu enobubanzi obukhulu, kuyafuneka ukuba unxibelelane kwangaphambili malunga nenqanaba lokubona impazamo ye-weld, kuba ukubonwa kwe-weld flaw kuya kubiza imali eyongezelelweyo.ingxaki.
7. Ukongeza, imibhobho yentsimbi yomthungo emikhulu enobubanzi obungaphezulu kwe-1020mm inokuvelisa iiweld ezimbini.Iiprojekthi ezininzi aziyi kwamkela ii-welds ezimbini ngaphandle konxibelelwano lwangaphambili, kwaye ziya kubizwa ngokuba yimibhobho yensimbi enesiphako.

Ngoko ke, kuyimfuneko ukunxibelelana kwangaphambili ngaphambi kokuthenga nayiphi na ipayipi yensimbi, ebangela iingxabano ezingadingekile kunye nokulahlekelwa kwezoqoqosho.