1. Ukuhlolwa kwembonakalo yeizinto ezifakwa engqinibeni: ngokubanzi, ukuhlolwa okubonakalayo yindlela ephambili.Ngokujonga inkangeleko, kufunyaniswe ukuba imbonakalo ye-weld iziphene zemibhobho edityanisiweyo ye-elbow fittings zibonwa ngamaxesha angama-5-20 wokukhulisa iglasi ngamanye amaxesha.Okufana ne-undercut, i-porosity, i-weld bead, i-surface crack, ukufakwa kwe-slag, ukungena kwe-welding, njl.

2. I-NDT yokufakelwa kwe-elbow: khangela iziphene ezifana nokufakwa kwe-slag, umngxuma womoya kunye nokuqhekeka kwi-weld.Ukuhlolwa kwe-X-ray kukusetyenziswa kwe-X-ray ukuthatha iifoto ze-weld, ngokomfanekiso ongalunganga ukugqiba ukuba ngaba kukho iziphene kwi-weld, inani kunye nohlobo lweziphene.Okwangoku, uvavanyo lwe-X-ray, uvavanyo lwe-ultrasonic kunye novavanyo lwemagnethi lusetyenziswa ngokubanzi.Emva koko ngokweemfuno zobugcisa bemveliso, qaphela ukuba i-weld ifanelekile.Ngeli xesha, iliza elibonakalisiweyo livela kwisikrini.Ngokuthelekisa kunye nokuchonga la maza abonakalisiweyo kunye namaza aqhelekileyo, ubungakanani kunye nendawo yeziphene inokumiselwa.Uvavanyo lwe-Ultrasonic lulula kakhulu kunovavanyo lwe-X-ray, ngoko lusetyenziswe ngokubanzi.Nangona kunjalo, uvavanyo lwe-ultrasonic lunokugwetywa kuphela ngamava okusebenza kwaye alukwazi ukushiya isiseko sokuhlola.Xa i-beam ye-ultrasonic idluliselwa kwi-interface yomoya yensimbi, iya kuphinda iphinde idlule kwi-weld.Ukuba kukho isiphene kwi-weld, i-beam ye-ultrasonic iya kubonakala kwi-probe kunye nebhere.Ukuhlolwa kwemagneti kungasetyenziselwa iziphene zangaphakathi kunye neentanda ezincinci ezingekho nzulu ukusuka kumphezulu we-weld.

3. Uvavanyo lwepropathi yomatshini wokufakelwa kwengqiniba: uvavanyo olungonakalisi lunokufumana iziphene zendalo ze-weld, kodwa alukwazi ukuchaza iipropathi zoomatshini zentsimbi kwindawo echaphazelekayo yobushushu.Ngamanye amaxesha iimvavanyo zokuxinana, impembelelo kunye nokugoba ziyafuneka kumalungu adityanisiweyo.Olu vavanyo lwenziwa ebhodini.Ipleyiti yokuvavanya kufuneka idityaniswe kunye ne-longitudinal seam ye-cylinder ukuqinisekisa ukuba iimeko ezifanayo zokwakha.Emva koko iimpawu zomatshini zeplate yokuvavanya zavavanywa.Kwimveliso ebonakalayo, kuphela i-welding edibeneyo yebakala elitsha lensimbi ivavanywa kule nkalo.

4. Uvavanyo lwe-Hydrostatic kunye novavanyo lwe-pneumatic ye-elbow fittings: kwiinqanawa zoxinzelelo ezifuna ukutywinwa, uvavanyo lwe-hydrostatic kunye novavanyo lwe-pneumatic lufunekayo ukujonga ukutywinwa kunye nokunyanzeliswa koxinzelelo lwe-welds.Indlela yokufaka isikhongozeli kuxinzelelo olusebenzayo lwamanzi okanye amaxesha angama-1.25-1.5 amandla okusebenza kwegesi (uninzi lomoya) kangangexesha elithile, emva koko uphande ukuhla koxinzelelo kwisitya, kwaye uphande ukuba kukho yiyo nayiphi na into evuzayo, ukuze kuqinisekiswe ukuba i-weld ifanelekile.