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API 5L PSL1 PSL2 Gr.B X42 X52 X60 Laina Paipu kila ʻole
Kūlana: API SPEC 5L、ISO3183、GB/T9711 Papa B X42 X52 X56 X60 X65 Na PSL1 PSL2;Noi: Hoʻohana ʻia ia no ka lawe ʻana i ke kinoea, ka wai, a me ka ʻaila i loko o nā ʻoihana ʻaila a me nā kinoea maoli.
