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API 5L PSL1 PSL2 Gr.B X42 X52 X60 Layin Bututun Karfe Mara Sumul
Standard: API SPEC 5L, ISO3183, GB/T9711 Grade B X42 X52 X56 X60 X65 Ta PSL1 PSL2;Application: Ana amfani dashi don isar da iskar gas, ruwa, da man fetur a masana'antar mai da iskar gas.
