Ọkpụkpọ ọkpọkọ
Ọkpụkpọ ọkpọkọ
isi ígwè
20G, 15CrMoG, 12Cr2MoG, 12Cr5MoG,12Cr9MoG,T11,T22,T5,T22,T9,T91
mmepụta ọkọlọtọ
GB5310《 enweghị nkebi ígwè tube maka elu-nrụgide ji esi mmiri ọkụ》
ASME SA213 "Ferrite enweghị nkebi na austenitic alloy ígwè tube maka ọkụ ọkụ, nnukwu ikpo ọkụ na okpomọkụ Exchanger"
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