Ọkụkọ mmiri ọkụ na-emeghe n'akụkụ abụọ ma nwee akụkụ oghere, ogologo na gburugburu nke nnukwu ígwè, dịka ụzọ mmepụta si dị, enwere ike kewaa ya n'ime ọkpọkọ ígwè na-enweghị ntụpọ na ọkpọkọ ígwè a kpara akpa, nkọwapụta ọkpọkọ ígwè na akụkụ niile (dị ka dayameta ma ọ bụ ogologo) na ọkpụrụkpụ mgbidi, kwuru na nha ya dị oke obosara, site na obere okpu mkpuchi ruo ọtụtụ mita na dayameta, nnukwu ọkpọkọ dayameta.

Enwere ike iji ọkpọkọ ígwè mee ihe maka ọkpọkọ, ngwa okpomọkụ, ụlọ ọrụ igwe, nchọpụta ala mmanụ ala, akpa, ụlọ ọrụ kemịkalụ na ebumnuche pụrụ iche.

(1) Ígwè ígwè carbon dị elu nke nwere usoro nhazi 20G, 20MnG, 25MnG.

(2) Ígwè nhazi alloy 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, wdg.

A na-ekewa ọkpọkọ ọkpọkọ n'ime ụdị abụọ:GB/T3087-2018ọkpọkọ boiler dị n'etiti na nke dị ala,GB/T5310-2018ọkpọkọ boiler nwere nrụgide dị elu. Ngwaahịa anyị bụ isi gụnyere:

ASTMA210(A10M)-2012Ọkụ ígwè carbon dị ọkara na ọkpọkọ ígwè na-ekpo ọkụ nke ọma, ihe bụ isi bụ SA210 GrA1, SA210GrC;

ASME SA106/SA-106M-2015, ihe ndị bụ isi bụ GR.B gr.C;

ASME/SA SA – 213-213 – m, ihe a na-ejikarị eme ihe: T11, T12, T22 na T23, T91, P92, T5, T5b, T9, T21, T22, T17;

ASTM A335 / A335M – 2018, ihe ndị bụ isi bụ: P11, P12, P22, P5, P9, P23, P91, P92, P2, wdg.