Alloy tube (Alloy yeeb nkab) yog ib hom seamless steel yeeb nkab, nws qhov kev ua tau zoo dua li cov yeeb nkab steel seamless, vim tias cov yeeb nkab steel no muaj Cr, kub tsis kam, kub tsis kam, corrosion-resistant kev ua tau zoo ntawm lwm cov yeeb nkab. cov pob qij txha tsis sib haum, yog li cov mor...
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