Ipayipi elishisayo le-dip lashukumisa, ukuze kuthuthukiswe ukumelana nokugqwala kwepayipi lensimbi, ipayipi lensimbi elijwayelekile liyakhanyiswa.Amapayipi ensimbi enziwe ngensimbi ahlukaniswe abe i-hot-dip galvanizing kanye ne-electro galvanizing.I-hot-dip galvanizing layer iwugqinsi, izindleko ze-electro galvanizing ziphansi, futhi ingaphezulu alibushelelezi kakhulu.