Tuubbada kululeeyaha waxay u furan tahay labada daraf waxayna leedahay qayb godan, dhererka iyo hareeraha birta weyn, marka loo eego hababka wax soo saarka waxaa loo qaybin karaa tuubo bir ah oo aan fiicneyn iyo tuubo bir ah oo welded, qeexida tuubada birta oo leh cabbir guud (sida dhexroorka ama dhererka) iyo dhumucda derbiga, ayaa sheegay in cabbirkiisu uu aad u ballaaran yahay, laga bilaabo dhexroorka dhexroorka yar ilaa dhowr mitir dhexroor, tuubo dhexroor weyn.

Tuubooyinka birta ah waxaa loo isticmaali karaa tuubooyinka, qalabka kulaylka, warshadaha mishiinada, batroolka sahaminta juqraafiyeed, weelasha, warshadaha kiimikada iyo ujeedooyin gaar ah.

(1) Bir qaab dhismeedka kaarboon tayo sare leh 20G, 20MnG, 25MnG.

(2) Qaab dhismeedka Alloy steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, iwm.

Tuubada kululeeyaha waxa loo qaybiyaa laba qaybood:GB/T3087-2018tuubada kululeeyaha cadaadiska hoose iyo dhexe,GB/T5310-2018tuubada kululeeyaha cadaadiska sare. Alaabtayada ugu muhiimsan waxaa ka mid ah:

ASTMA210(A10M)-2012Kuleyliyaha birta kaarboon dhexdhexaad ah iyo kuleyliyaha superheater birta birta aan xuduud lahayn, walxaha ugu muhiimsan waa SA210 GRA1, SA210GrC;

ASME SA106/SA-106M-2015, qalabka ugu muhiimsan waa GR.B gr.C;

ASME/SA SA – 213-213 – m, walxaha daawaha caadiga ah: T11, T12, T22 iyo T23, T91, P92, T5, T5b, T9, T21, T22, T17;

ASTM A335 / A335M - 2018Qalabka ugu muhiimsan waa: P11, P12, P22, P5, P9, P23, P91, P92, P2, iwm.