Iityhubhu zentsimbi ezithambileyo zokuqhekeka kwepetroliyam
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Iityhubhu zentsimbi ezingenamthungo zokuqhekeka kwepetroliyam, GB9948-2006, umbhobho weSanon
Iityhubhu zentsimbi ezingenamthungo zokuqhekeka kwepetroleum, ezifakwe njengeetyhubhu ze-fumace, iityhubhu zokutshintshiselana nobushushu kunye
imibhobho kwizityalo zepetroliyam kunye nezokucoca. Amanqanaba esinyithi esakhiweyo sekhabhoni esemgangathweni ophezulu yi-20g,
Iiklasi zentsimbi ye-alloy: 15mog, 20mog, 12crmog, 15CrMoG, 12Cr2MoG, 12CrMoVG, njl.
