Structural enweghị nkebi ọkpọkọ (GB/T8162-2008) bụ ụdị enweghị nkebi ígwè ọkpọkọ eji maka izugbe Ọdịdị na n'ibu Ọdịdị. Ọkọlọtọ ọkpọkọ igwe anaghị agba nchara na-emetụta ọkpọkọ nchara na-ebufe mmiri.

Na mgbakwunye na ihe carbon (C) na ụfọdụ silicon (Si) (n'ozuzu ọ dịghị ihe karịrị 0.40%) na manganese (Mn) (n'ozuzu ọ dịghị ihe karịrị 0.80%, elu ruo 1.20%) alloy ihe maka deoxidation, structural. ígwè ọkpọkọ , na-enweghị ihe ndị ọzọ alloying (ma e wezụga ihe fọdụrụnụ).

Ọkpụkpụ ígwè arụpụtara dị otú ahụ ga-ekwe nkwa ma ihe mejupụtara kemịkal na ihe ndị na-arụ ọrụ. A na-achịkwa ọdịnaya nke sọlfọ (S) na phosphorus (P) ihe adịghị ọcha n'okpuru 0.035%. Ọ bụrụ na a na-achịkwa ya n'okpuru 0.030%, a na-akpọ ya ígwè dị elu dị elu, na "A" kwesịrị ịgbakwunye mgbe ọkwa ya gasịrị, dị ka 20A; Ọ bụrụ na P na-achịkwa n'okpuru 0.025% na S dị n'okpuru 0.020%, a na-akpọ ya ọkpọkọ nchara dị elu dị elu, na ọkwa ya kwesịrị ịgbakwunye "E" iji chọpụta ọdịiche. N'ihi na ndị ọzọ fọdụrụ alloying ọcha wetara n'ime structural ígwè ọkpọkọ si akụrụngwa, ọdịnaya nke chromium (Cr), nickel (Ni), ọla kọpa (Cu), wdg na-n'ozuzu na-achịkwa na Cr≤0.25%, Ni≤0.30%, Cu≤ 0.25%. Ụfọdụ akara ule nke ọdịnaya manganese (Mn) ruru 1.40%, nke a na-akpọ ígwè manganese.

Ọdịiche dị n'etiti ọkpọkọ enweghị nkebi na mmiri enweghị nkebi:

Isi ihe dị iche n'etiti ya na ọkpọkọ nchara na-enweghị ihe ọ bụla bụ na a na-edobe ọkpọkọ igwe anaghị agba nchara n'okpuru ule hydraulic otu otu ma ọ bụ ultrasonic, eddy current na magnetik flux leakagespection. Ya mere, na nhọrọ ọkọlọtọ nke ọkpọkọ ọkpọkọ ọkpọkọ ọkpọkọ, e kwesịghị iji ọkpọkọ nchara na-enweghị mmiri. Usoro nnọchite anya ọkpọkọ igwe anaghị agba nchara bụ dayameta dị n'èzí, ọkpụrụkpụ mgbidi, yana ọkpọkọ igwe anaghị agba nchara na-ejikarị arụ ọrụ, ogbunigwe kol, igwe hydraulic, na ebumnuche ndị ọzọ. A na-ekewa ihe nke igwe anaghị agba nchara nchara n'ime 10 #, 20#, 35#, 45#, 16Mn, 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo na ndị ọzọ.

Structural igwe anaghị agba nchara ọkpọkọ (GB/T14975-1994) bụ a na-ekpo ọkụ akpọrepu (extruded, mgbasa) na oyi adọta (akpọrela) enweghị nkebi ọkpọkọ.

N'ihi usoro mmepụta ha dị iche iche, a na-ekewa ọkpọ nchara na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ (extruded) na-ekpo ọkụ na-ekpo ọkụ na oyi na-atụ (rolled). A na-ekewa tubes oyi adọta (akpọrela) ụzọ abụọ: tubes gburugburu na tubes nwere ụdị pụrụ iche.

Nleba anya usoro eruba:
Igwe na-ekpo ọkụ na-ekpo ọkụ (extruded enweghị nkebi ọkpọkọ): gburugburu tube billet → kpo oku → perforation → atọ-roller skew rolling, na-aga n'ihu rolling ma ọ bụ extrusion → tube mwepụ → size (ma ọ bụ dayameta mbelata) → jụrụ oyi → billet tube → ịgbatị → Nnwale nrụgide mmiri (ma ọ bụ nchọpụta ntụpọ) → akara → nchekwa.

Oyi adọtara (akpọrela) ọkpọkọ nchara na-enweghị nkebi: okirikiri tube billet → kpo oku → perforation → isi → annealing → pickling → oiling (ọla kọpa) → ọtụtụ ihe osise oyi (mgbagharị oyi) nchọpụta) → akara → nkwakọba ihe.