1. Ifarahan si Paipu Irin alagbara, irin alagbara, irin pipe jẹ ipata-sooro, aesthetically tenilorun, ati ki o ga-otutu sooro paipu ni opolopo lo ni orisirisi awọn aaye. Awọn paipu irin alagbara ni a ṣe lati inu alloy ti irin, chromium, ati nickel. Kromium tesiwaju...
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