Ndị China na-emepụta penstock okpomọkụ dị elu
GB3087 - ọkọlọtọ mba China
Gb5310 - ọkọlọtọ mba China
ASME SA210 - Igwe ọkụ America na koodu ụgbọ mmiri
ASME SA213 - Igwe ọkụ America na koodu ụgbọ mmiri
Din17175 - Standard German ụlọ ọrụ mmepụta ihe
10. 20, 20g, 20mng, 25mng, 15CrMoG, 12CR2MOG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNb, sa210a1, sa210c, SA213 T11, SA213 T12, SA213 T22, SA213 T23, SA213 T91, SA213 T92, st45.8 / Ⅲ, 15Mo3, 13CrMo44, 10CrMo910, wdg