Abubuwan da aka yi amfani da su don kayan aiki na gida gabaɗaya sune bututun 20, bututun 25, mai kula da 32, wasu suna rarraba bututun ruwa mai zafi da bututun ruwa mai sanyi. Kayan haɗi suna da daban-daban bayanai na daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai daidai ( nono521521)

Tubular ruwa ta yafi ɗaukar ayyukan ruwan ruwa na ruwa, ruwan datti, ruwan ruwa na gona da sauran ayyukan ruwa. An rarraba bututun ruwa zuwa bututun kankare (CP) da bututun ƙarfe mai ƙarfe (RCP).

Drainage bututun bayanin kula da bututun ciki diamita DO (100mm - 3000mm), tsawon LO (1m - 20m) matsin lamba index, Class I, Class II, Class III Diamita aka raba zuwa: Flat kofa, kofa, kofa, biyu kofa, karfe kofa.

Janar gida ruwa bututun bayanai sune: DN15 (4 bututun), DN20 (6 bututun), DN25 (1 inci bututun), DN32 (1 inci 2 bututun), DN40 (1 inci rabin bututun), DN50 (2 inci bututun), DN65 (2 inci rabin bututun), DN80 (3 inci bututun), DN100 (4 inci bututun), DN125 (5 inci bututun), DN150 (6 inci bututun), DN200 (8 inci bututun), DN250 (10 inci bututun), da sauransu.

Ruwa bututun Φ25 × 1/2 yana nufin da waje diamita ne 25. Ainihin daidaitaccen diamita mai suna shine DN20 (wato, ana kiran bututun 6). Za ka iya sayen fifa na minti 6. Hakanan za a iya saya famfo na minti 4 (kawai ƙara canji tsakanin bututun da famfo).

Kayan da kayan fifo na gida suna da bambanci, amma an rarraba sassan fifa da aka haɗa da bututun bisa ga girman minti 4, minti 6, inci 1 da sauransu. Kada ka damu da sayen kuskure.

Yawancin lokaci ana cewa bututun 4 yana da inci, don haka bututun 4 shine inci 1/2 (4/8 = 1/2), kuma inci daya = 25.4mm, don haka diamita ta ciki ta bututun 4 shine 25.4/2 = 12.7mm, kuma wannan shine diamita ta ciki ta bututun ruwa na DN15.