I-DHZ iyindinganiso kazwelonke enabakhiqizi be-neck flange. Le nkampani inamandla obuchwepheshe aqinile, ingaklama futhi ikhiqize imininingwane ehlukahlukene ekhethekile yemikhiqizo yokufaka amapayipi ngokwezidingo zomsebenzisi. Ngokuhlola i-metallographic, ukuhlolwa ngokomzimba, ukuhlaziya amakhemikhali, ukuhlolwa okungabhubhisi nezinye izinto ezithuthukisiwe zokuhlola nezindlela.
Abakhiqizi be-Flange bahileleke kakhulu kulokhu: i-gb neck flange, i-neck flat welding flange, i-neck butt welding flange, i-neck non-standard flange nezinye izinhlobo ze-neck flanges. Iplanti inenani elikhulu lemishini yamapayipi abasebenzi abangochwepheshe be-backbone, okokusebenza okuthuthukisiwe kwe-forging kanye ne-spectral metallography, ukutholwa kwamaphutha, ukuhlolwa ngokomzimba namakhemikhali kanye nezinye isethi ephelele yemishini yokuhlola, inkampani isebenzisa ngokuqinile uhlelo lokuphatha olujwayelekile lwekhwalithi. Kusungulwe uhlelo lwesayensi lokuqinisekisa ikhwalithi, uhlelo oluphelele lokuqinisekisa ikhwalithi kanye nobuchwepheshe bokukhiqiza besayensi kuqinisekisa ngempumelelo ikhwalithi yomkhiqizo.

Abakhiqizi be-DHDZ Flange bamisa umnyango wokulawula ikhwalithi kanye nesikhungo sokuhlola, ngokufakwa kwamapayipi anomfutho ophezulu kanye nokufakwa kwamapayipi okucindezela okuphakathi nendawo okuphansi izinhlelo ezimbili zokuhlola, imisebenzi yokuhlola iphelele, imishini yokuhlola nezinsimbi zisezingeni eliphezulu lamazwe ngamazwe nelasekhaya, Kukhona i-X- ukutholwa kwe-ray flaw, ukutholwa kwezinhlayiyana kazibuthe, ukutholwa kwamaphutha e-ultrasonic, ukuhlaziywa kwe-metallographic, ukuhlolwa kwamakhemikhali, ukuhlolwa kwempahla eyimishini, ukuhlolwa komthelela, ukuhlolwa kwengcindezi yamanzi, ukuhlolwa kwe-spectral, ukuqapha kwe-infrared nezinye izinto zokuhlola.
I-China gb neck flange abakhiqizi - bawine ngekhwalithi, inzuzo encane kodwa umgomo wokwenza inzuzo esheshayo, baqhubekela phambili njalo, emqhudelwaneni oshubile wemakethe, ngokubambisana okuhle nomoya wesevisi oqotho ukuze bawine ukwethenjwa kwamakhasimende amaningi kanye nentuthuko esheshayo. Ukuphokophela phambili, ukuphishekela ukwenza kahle, ukufunda okuqhubekayo, ukunganeliseki ngenkolelo yamakhasimende ethu yokudala isimo sokuwina kabili, ukudala ikusasa elingcono.