1. Ihe:12Cr1MoVG, nke kwekọrọ na ọkọlọtọ mbaGB5310, ihe 12Cr1MoVG, ojiji: ọkpọkọ na-agba mmiri nke nwere nrụgide dị elu

2. Ihe:15CrMoG, nke kwekọrọ na ọkọlọtọ mba GB5310, ihe e ji mee ya bụ 15CrMoG, ojiji ya bụ ọkpọkọ boiler dị elu, ọkọlọtọ Amerịka kwekọrọ bụA213/A335ihe e ji mee ya bụT12/P12, ojiji ya bụ paịpụ ígwè na-enweghị ntụpọ nke na-agba ọkụ, nke kwekọrọ na ọkọlọtọ German DIN17175, ihe e ji mee ya bụ 13CrMo44, ojiji ya na-eguzogide ya. Paịpụ ígwè na-ekpo ọkụ nke na-enweghị ntụpọ. Ọkọlọtọ Europe kwekọrọ na ya bụ EN10216-2, ihe e ji mee ya bụ 13CrMo4-5, ojiji: paịpụ nrụgide, koodu HS bụ 7304599090.

3. Ihe: 1Cr5Mo, nke kwekọrọ na ọkọlọtọ mba bụGB9948ma ọ bụ GB6479, ihe 1Cr5Mo, ojiji, paịpụ ígwè na-enweghị ntụpọ maka boilers nwere nrụgide dị elu, nke kwekọrọ na ọkọlọtọ A213/A335 nke America, ihe: T5/P5, ojiji, paịpụ ígwè na-enweghị ntụpọ maka boilers, nke kwekọrọ na ọkọlọtọ German EN10216-2, ihe X11CrMo5, ojiji, paịpụ na-ebu nrụgide, koodu HS bụ 7304599090.