API 5L Seamless Steel Pipe yodziwika bwino chifukwa chakuchita bwino mumakampani amafuta ndi gasi, imayima ngati gawo lolimba komanso magwiridwe antchito.Ndi magiredi osiyanasiyana kuphatikiza Gr.B, X42, X52, X60, X65, ndi X70, imakwaniritsa zofunikira zonyamulira zamadzimadzi ndi ...
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