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API 5L PSL1 PSL2 Gr.B X42 X52 X60 Chingwe Chopanda Chitsulo Chopanda Chitsulo
Standard: API SPEC 5L、ISO3183、GB/T9711 Gulu B X42 X52 X56 X60 X65 Wolemba PSL1 PSL2;Ntchito: Amagwiritsidwa ntchito potumiza gasi, madzi, ndi mafuta m'mafakitale amafuta ndi gasi.
