Taub qab fais fab tuag yog ib hom yeeb nkab fittings, uas yog hais txog lub flange nrog lub caj dab thiab txoj kev hloov ntawm yeeb nkab thiab pob tw welded nrog cov yeeb nkab. Fais pob txha fais fab tsis yog yooj yim rau deform, kaw zoo zoo thiab dav siv. Nws muaj txoj cai rigidity thiab elasticity cov kev cai thiab kev tsim nyog taub qab-welded thinning hloov. Qhov kev ncua deb ntawm lub weld thiab qhov sib npaug ntawm qhov sib npaug yog loj, thiab qhov sib npaug ntawm qhov sib npaug yog dawb ntawm vuam kub distortion.
Taub qab-vuam flange tsis yooj yim rau deform, kaw zoo thiab dav siv. Nws muaj txoj cai rigidity thiab elasticity cov kev cai thiab kev tsim nyog taub qab-vuam thinning hloov. Qhov kev ncua deb ntawm lub weld thiab qhov sib npaug ntawm qhov sib npaug yog loj, thiab qhov sib npaug ntawm qhov sib npaug yog dawb ntawm vuam kub distortion. Nws txais ib txoj hnyav ntawm lub cev hnoos. Nws yog tsim rau cov kav dej loj nrog cov yawm suab loj los yog kub los yog cov kav dej uas muaj siab, siab thiab tsis kub. Nws yog feem ntau siv rau cov kav dej nrog PN ntau dua 2.5 MPa. Kev sib txuas ntawm kav dej thiab raj; kuj siv coj los thauj kim, flammable, tawg xov xwm.