{"id":1717,"date":"2026-02-25T12:34:54","date_gmt":"2026-02-25T05:34:54","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/bon-nuoc-inox-nen-chon-304-hay-316-cho-nguon-nuoc-sach\/"},"modified":"2026-02-25T12:34:54","modified_gmt":"2026-02-25T05:34:54","slug":"bon-nuoc-inox-nen-chon-304-hay-316-cho-nguon-nuoc-sach","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/bon-nuoc-inox-nen-chon-304-hay-316-cho-nguon-nuoc-sach\/","title":{"rendered":"B\u1ed3n n\u01b0\u1edbc Inox: N\u00ean ch\u1ecdn 304 hay 316 cho ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch?"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-tom-tat-ky-thuat-inox-304-vs-316-trong-bon-nuoc\">T\u00f3m t\u1eaft k\u1ef9 thu\u1eadt: Inox 304 vs 316 trong b\u1ed3n n\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-1-dieu-gi-quyet-dinh-chon-304-hay-316-cho-bon-nuoc\">\u0110i\u1ec1u g\u00ec quy\u1ebft \u0111\u1ecbnh ch\u1ecdn 304 hay 316 cho b\u1ed3n n\u01b0\u1edbc?<\/a><\/li>\n<li><a href=\"#toc-2-khuyen-nghi-lua-chon-theo-kich-ban-su-dung\">Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng<\/a><\/li>\n<li><a href=\"#toc-3-so-sanh-chi-tiet-304-vs-316-cho-bon-nuoc\">So s\u00e1nh chi ti\u1ebft: 304 vs 316 cho b\u1ed3n n\u01b0\u1edbc<\/a><\/li>\n<li><a href=\"#toc-4-thiet-ke-lap-dat-bao-tri-de-keo-dai-tuoi-tho-bon\">Thi\u1ebft k\u1ebf \u2013 l\u1eafp \u0111\u1eb7t \u2013 b\u1ea3o tr\u00ec \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd b\u1ed3n<\/a><\/li>\n<li><a href=\"#toc-5-ap-dung-tai-viet-nam-vai-kich-ban-thuc-te\">\u00c1p d\u1ee5ng t\u1ea1i Vi\u1ec7t Nam: v\u00e0i k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-6-checklist-dat-mua-bon-nuoc-inox\">Checklist \u0111\u1eb7t mua b\u1ed3n n\u01b0\u1edbc inox<\/a><\/li>\n<li><a href=\"#toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/a><\/li>\n<li><a href=\"#toc-8-ket-luan-chon-dung-mac-inox-cho-nguon-nuoc-sach\">K\u1ebft lu\u1eadn: Ch\u1ecdn \u0111\u00fang m\u00e1c inox cho ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch<\/a><\/li>\n<\/ul>\n<\/div>\n<p>B\u1ed3n n\u01b0\u1edbc inox trong d\u00e2n d\u1ee5ng v\u00e0 c\u00f4ng tr\u00ecnh \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u an to\u00e0n cho n\u01b0\u1edbc u\u1ed1ng, b\u1ec1n v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u00e0 chi ph\u00ed h\u1ee3p l\u00fd. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p nh\u1ea5t: ch\u1ecdn Inox 304 hay Inox 316 cho ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch? C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn:<br \/>\n&#8211; Inox 304: ph\u00f9 h\u1ee3p \u0111a s\u1ed1 ngu\u1ed3n n\u01b0\u1edbc m\u00e1y n\u1ed9i \u0111\u1ecba (n\u1ed9i \u0111\u00f4, xa bi\u1ec3n) v\u1edbi Cl- th\u1ea5p, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng, b\u1ea3o d\u01b0\u1ee1ng \u0111\u00fang c\u00e1ch.<br \/>\n&#8211; Inox 316\/316L: n\u00ean ch\u1ecdn \u1edf v\u00f9ng ven bi\u1ec3n, n\u01b0\u1edbc c\u00f3 Cl- cao, c\u00f3 kh\u1eed tr\u00f9ng b\u1eb1ng hypochlorite (clo) th\u01b0\u1eddng xuy\u00ean, ho\u1eb7c y\u00eau c\u1ea7u tu\u1ed5i th\u1ecd cao, \u00edt r\u1ee7i ro \u0103n m\u00f2n.<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt chi ti\u1ebft, ng\u01b0\u1ee1ng khuy\u1ebfn ngh\u1ecb theo ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc, m\u00f4i tr\u01b0\u1eddng Vi\u1ec7t Nam v\u00e0 h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u.<\/p>\n<h2 id=\"toc-0-tom-tat-ky-thuat-inox-304-vs-316-trong-bon-nuoc\">T\u00f3m t\u1eaft k\u1ef9 thu\u1eadt: Inox 304 vs 316 trong b\u1ed3n n\u01b0\u1edbc<\/h2>\n<h3>Th\u00e0nh ph\u1ea7n v\u00e0 ti\u00eau chu\u1ea9n<\/h3>\n<p>&#8211; Inox 304 (UNS S30400, theo ASTM A240; t\u01b0\u01a1ng \u0111\u01b0\u01a1ng X5CrNi18-10 theo EN 10088): 18\u201320% Cr, 8\u201310.5% Ni.<br \/>\n&#8211; Inox 316 (UNS S31600; ASTM A240; t\u01b0\u01a1ng \u0111\u01b0\u01a1ng X5CrNiMo17-12-2): 16\u201318% Cr, 10\u201314% Ni, 2\u20133% Mo.<br \/>\n&#8211; Bi\u1ebfn th\u1ec3 L (304L\/316L) c\u00f3 h\u00e0m l\u01b0\u1ee3ng C \u22640.03% gi\u00fap h\u1ea1n ch\u1ebf nh\u1ea1y c\u1ea3m h\u00f3a sau h\u00e0n, gi\u1ea3m nguy c\u01a1 \u0103n m\u00f2n li\u00ean tinh t\u1ea1i m\u1ed1i h\u00e0n.<br \/>\n&#8211; 316 ch\u1ee9a Mo ~2% l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 (pitting) b\u1edfi ion clorua.<\/p>\n<p>Ngu\u1ed3n: ASTM A240\/EN 10088.<\/p>\n<h3>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n: PREN v\u00e0 c\u01a1 ch\u1ebf<\/h3>\n<p>&#8211; Ch\u1ec9 s\u1ed1 PREN (Pitting Resistance Equivalent Number): PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N<br \/>\n  &#8211; 304: PREN ~18\u201319<br \/>\n  &#8211; 316: PREN ~23\u201324<br \/>\n&#8211; C\u01a1 ch\u1ebf h\u01b0 h\u1ecfng ch\u00ednh trong b\u1ed3n n\u01b0\u1edbc:<br \/>\n  &#8211; \u0102n m\u00f2n r\u1ed7\/ khe do Cl- (t\u1eadp trung \u1edf khe h\u1edf, m\u1ed1i gh\u00e9p, ch\u00e2n \u0111\u1ebf).<br \/>\n  &#8211; \u0102n m\u00f2n do clo\/hypochlorite d\u00f9ng kh\u1eed tr\u00f9ng (\u0111\u1eb7c bi\u1ec7t khi s\u1ed1c clo, nhi\u1ec7t \u0111\u1ed9 cao, pH th\u1ea5p).<br \/>\n  &#8211; \u0102n m\u00f2n li\u00ean tinh \u1edf m\u1ed1i h\u00e0n n\u1ebfu kh\u00f4ng d\u00f9ng c\u1ea5p L ho\u1eb7c kh\u00f4ng t\u1ea9y\/passivation sau h\u00e0n.<br \/>\n  &#8211; \u0102n m\u00f2n vi sinh (MIC) \u1edf v\u00f9ng n\u01b0\u1edbc t\u00f9 \u0111\u1ecdng.<\/p>\n<p>Ngu\u1ed3n: Nickel Institute; ASSDA.<\/p>\n<h2 id=\"toc-1-dieu-gi-quyet-dinh-chon-304-hay-316-cho-bon-nuoc\">\u0110i\u1ec1u g\u00ec quy\u1ebft \u0111\u1ecbnh ch\u1ecdn 304 hay 316 cho b\u1ed3n n\u01b0\u1edbc?<\/h2>\n<h3>1) N\u1ed3ng \u0111\u1ed9 clorua (Cl-) trong n\u01b0\u1edbc<\/h3>\n<p>&#8211; N\u01b0\u1edbc m\u00e1y theo QCVN 01-1:2018\/BYT th\u01b0\u1eddng c\u00f3 Cl- \u2264 250 mg\/L (gi\u1edbi h\u1ea1n c\u1ea3m quan\/\u0103n m\u00f2n t\u01b0\u01a1ng t\u1ef1 WHO).<br \/>\n&#8211; H\u01b0\u1edbng d\u1eabn th\u1ef1c ti\u1ec5n theo Nickel Institute\/ASSDA:<br \/>\n  &#8211; 304: ph\u00f9 h\u1ee3p n\u01b0\u1edbc c\u00f3 Cl- th\u1ea5p \u0111\u1ebfn kho\u1ea3ng 200 mg\/L \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng khi thi\u1ebft k\u1ebf, h\u00e0n v\u00e0 v\u1ec7 sinh \u0111\u00fang chu\u1ea9n.<br \/>\n  &#8211; 316: khuy\u1ebfn ngh\u1ecb khi Cl- kho\u1ea3ng 200\u20131,000 mg\/L, ho\u1eb7c c\u00f3 nguy c\u01a1 t\u00edch t\u1ee5 mu\u1ed1i (phun s\u01b0\u01a1ng bi\u1ec3n, b\u1ed1c h\u01a1i tr\u00ean m\u00e1i t\u00f4n n\u00f3ng).<br \/>\nL\u01b0u \u00fd: \u0110\u00e2y l\u00e0 ng\u01b0\u1ee1ng th\u1ef1c h\u00e0nh; r\u1ee7i ro th\u1ef1c t\u1ebf c\u00f2n ph\u1ee5 thu\u1ed9c h\u00ecnh h\u1ecdc khe, ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t, nhi\u1ec7t \u0111\u1ed9, clo kh\u1eed tr\u00f9ng v\u00e0 b\u1ea3o d\u01b0\u1ee1ng.<\/p>\n<p>Ngu\u1ed3n: ASSDA \u2013 Chloride in potable water; Nickel Institute \u2013 Stainless steels in potable water.<\/p>\n<h3>2) Clo\/hypochlorite d\u00f9ng kh\u1eed tr\u00f9ng<\/h3>\n<p>&#8211; N\u01b0\u1edbc c\u1ea5p \u0111\u00f4 th\u1ecb duy tr\u00ec clo d\u01b0 r\u1ea5t th\u1ea5p (th\u01b0\u1eddng 0.2\u20130.5 mg\/L). M\u1ee9c n\u00e0y \u00edt g\u00e2y h\u1ea1i cho 304\/316.<br \/>\n&#8211; V\u1ec7 sinh b\u1ed3n b\u1eb1ng dung d\u1ecbch t\u1ea9y NaOCl (thu\u1ed1c t\u1ea9y) n\u1ed3ng \u0111\u1ed9 cao ho\u1eb7c s\u1ed1c clo c\u00f3 th\u1ec3 g\u00e2y r\u1ed7, nh\u1ea5t l\u00e0 tr\u00ean 304.<br \/>\nKhuy\u1ebfn ngh\u1ecb:<br \/>\n&#8211; D\u00f9ng n\u1ed3ng \u0111\u1ed9 kh\u1eed tr\u00f9ng v\u1eeba ph\u1ea3i (v\u00ed d\u1ee5 50\u2013100 mg\/L clo t\u1ef1 do), th\u1eddi gian ng\u1eafn, sau \u0111\u00f3 x\u1ea3\/r\u1eeda k\u1ef9.<br \/>\n&#8211; Tr\u00e1nh \u0111\u1ed5 tr\u1ef1c ti\u1ebfp thu\u1ed1c t\u1ea9y \u0111\u1eb7c l\u00ean b\u1ec1 m\u1eb7t inox; pha lo\u00e3ng tr\u01b0\u1edbc.<br \/>\n&#8211; V\u1edbi b\u1ed3n th\u01b0\u1eddng xuy\u00ean kh\u1eed tr\u00f9ng ho\u1eb7c c\u1ea5p n\u01b0\u1edbc b\u1ec3 b\u01a1i: \u01b0u ti\u00ean 316\/316L.<\/p>\n<p>Ngu\u1ed3n: WHO \u2013 Kh\u1eed tr\u00f9ng n\u01b0\u1edbc; Nickel Institute.<\/p>\n<h3>3) M\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t<\/h3>\n<p>&#8211; Ven bi\u1ec3n\/\u0111\u1ea3o (H\u1ea3i Ph\u00f2ng, Qu\u1ea3ng Ninh, Th\u00e1i B\u00ecnh, Nam \u0110\u1ecbnh\u2026): s\u01b0\u01a1ng mu\u1ed1i gi\u00e0u Cl- b\u00e1m l\u00ean b\u1ed3n \u0111\u1eb7t m\u00e1i; 316 ch\u1ed1ng \u201ctea staining\u201d v\u00e0 r\u1ed7 t\u1ed1t h\u01a1n.<br \/>\n&#8211; N\u1ed9i \u0111\u00f4 mi\u1ec1n B\u1eafc (H\u00e0 N\u1ed9i, B\u1eafc Ninh\u2026): n\u01b0\u1edbc m\u00e1y Cl- th\u1ea5p, 304 th\u01b0\u1eddng l\u00e0 \u0111\u1ee7, n\u1ebfu b\u1ed3n \u0111\u1eb7t tho\u00e1ng m\u00e1t, \u00edt b\u1ee5i\/axit, b\u1ea3o d\u01b0\u1ee1ng \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; Khu c\u00f4ng nghi\u1ec7p c\u00f3 kh\u00ed axit\/ki\u1ec1m, g\u1ea7n \u0111\u01b0\u1eddng qu\u1ed1c l\u1ed9 b\u1ee5i mu\u1ed1i m\u00f9a m\u01b0a: \u01b0u ti\u00ean 316, ho\u1eb7c t\u0103ng t\u1ea7n su\u1ea5t v\u1ec7 sinh.<\/p>\n<h3>4) Nhi\u1ec7t \u0111\u1ed9 v\u00e0 h\u00ecnh h\u1ecdc b\u1ed3n<\/h3>\n<p>&#8211; Nhi\u1ec7t \u0111\u1ed9 >30\u00b0C, n\u01b0\u1edbc t\u00f9 \u0111\u1ecdng l\u00e0m t\u0103ng nguy c\u01a1 r\u1ed7, nh\u1ea5t l\u00e0 v\u1edbi 304.<br \/>\n&#8211; B\u1ed3n c\u00f3 nhi\u1ec1u khe, m\u1ed1i gh\u00e9p, v\u00e0 m\u1ed1i h\u00e0n kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ea9y\/passivation l\u00e0m t\u0103ng \u0103n m\u00f2n khe; 316\/316L gi\u1ea3m r\u1ee7i ro.<\/p>\n<h2 id=\"toc-2-khuyen-nghi-lua-chon-theo-kich-ban-su-dung\">Khuy\u1ebfn ngh\u1ecb l\u1ef1a ch\u1ecdn theo k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng<\/h2>\n<p>&#8211; N\u01b0\u1edbc m\u00e1y n\u1ed9i \u0111\u00f4, Cl- th\u1ea5p, kh\u00f4ng s\u1ed1c clo: Ch\u1ecdn 304L. B\u1ec1 m\u1eb7t 2B\/BA, m\u1ed1i h\u00e0n t\u1ea9y\/passivation.<br \/>\n&#8211; Nh\u00e0 d\u00e2n\/kh\u00e1ch s\u1ea1n ven bi\u1ec3n, b\u1ed3n \u0111\u1eb7t m\u00e1i: Ch\u1ecdn 316L. Che ch\u1eafn m\u01b0a gi\u00f3, v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<br \/>\n&#8211; H\u1ec7 RO\/UF, b\u1ed3n trung gian c\u00f3 kh\u1eed tr\u00f9ng \u0111\u1ecbnh k\u1ef3: 316L. Ki\u1ec3m so\u00e1t clo, x\u1ea3 r\u1eeda k\u1ef9 sau v\u1ec7 sinh.<br \/>\n&#8211; N\u01b0\u1edbc gi\u1ebfng khoan c\u00f3 Cl- ho\u1eb7c s\u1eaft\/mangan cao: x\u1eed l\u00fd tr\u01b0\u1edbc khi v\u00e0o b\u1ed3n. N\u1ebfu Cl- kh\u00f3 ki\u1ec3m so\u00e1t, \u01b0u ti\u00ean 316L.<br \/>\n&#8211; C\u00f4ng tr\u00ecnh y\u00eau c\u1ea7u tu\u1ed5i th\u1ecd >15 n\u0103m, r\u1ee7i ro th\u1ea5p: 316L cho th\u00e0nh b\u1ed3n v\u00e0 ph\u1ee5 ki\u1ec7n.<\/p>\n<h2 id=\"toc-3-so-sanh-chi-tiet-304-vs-316-cho-bon-nuoc\">So s\u00e1nh chi ti\u1ebft: 304 vs 316 cho b\u1ed3n n\u01b0\u1edbc<\/h2>\n<h3>\u0110\u1ed9 b\u1ec1n \u0103n m\u00f2n<\/h3>\n<p>&#8211; 304: ch\u1ecbu n\u01b0\u1edbc s\u1ea1ch t\u1ed1t, nh\u01b0ng nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi r\u1ed7\/khe khi Cl- cao, nhi\u1ec7t, ho\u1eb7c c\u00f3 thu\u1ed1c t\u1ea9y.<br \/>\n&#8211; 316: Mo t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 r\u00f5 r\u1ec7t; b\u1ec1 m\u1eb7t \u00edt \u201c\u1ed1 tr\u00e0\u201d ngo\u00e0i tr\u1eddi ven bi\u1ec3n.<\/p>\n<h3>M\u1ed1i h\u00e0n v\u00e0 c\u1ea5p L<\/h3>\n<p>&#8211; \u01afu ti\u00ean 304L\/316L cho b\u1ed3n h\u00e0n TIG\/MIG \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1ea1y c\u1ea3m h\u00f3a; y\u00eau c\u1ea7u nh\u00e0 s\u1ea3n xu\u1ea5t t\u1ea9y m\u1ed1i h\u00e0n v\u00e0 passivation b\u1eb1ng axit ph\u00f9 h\u1ee3p r\u1ed3i r\u1eeda trung h\u00f2a.<\/p>\n<h3>B\u1ec1 m\u1eb7t v\u00e0 v\u1ec7 sinh<\/h3>\n<p>&#8211; Ho\u00e0n thi\u1ec7n m\u1ecbn (2B\/BA) ch\u1ed1ng b\u00e1m b\u1ea9n t\u1ed1t h\u01a1n, gi\u1ea3m \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u r\u1ed7.<br \/>\n&#8211; Kh\u00f4ng d\u00f9ng ch\u1ea5t t\u1ea9y ch\u1ee9a Cl- \u0111\u1eadm \u0111\u1eb7c\/axit HCl; d\u00f9ng ch\u1ea5t t\u1ea9y nh\u1eb9 pH trung t\u00ednh, kh\u0103n m\u1ec1m, r\u1eeda \u2013 s\u1ea5y kh\u00f4.<\/p>\n<h3>Chi ph\u00ed \u2013 v\u00f2ng \u0111\u1eddi<\/h3>\n<p>&#8211; 316\/316L th\u01b0\u1eddng \u0111\u1eaft h\u01a1n 304\/304L kho\u1ea3ng 20\u201335% theo th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng (do Ni, Mo).<br \/>\n&#8211; V\u00f9ng ven bi\u1ec3n ho\u1eb7c n\u01b0\u1edbc gi\u00e0u Cl-: ch\u00eanh l\u1ec7ch \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u \u0111\u01b0\u1ee3c b\u00f9 b\u1edfi tu\u1ed5i th\u1ecd d\u00e0i h\u01a1n, \u00edt b\u1ea3o tr\u00ec\/ thay b\u1ed3n.<\/p>\n<h2 id=\"toc-4-thiet-ke-lap-dat-bao-tri-de-keo-dai-tuoi-tho-bon\">Thi\u1ebft k\u1ebf \u2013 l\u1eafp \u0111\u1eb7t \u2013 b\u1ea3o tr\u00ec \u0111\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd b\u1ed3n<\/h2>\n<h3>Thi\u1ebft k\u1ebf \u0111\u00fang<\/h3>\n<p>&#8211; Ch\u1ecdn \u0111\u1ed9 d\u00e0y ph\u00f9 h\u1ee3p dung t\u00edch v\u00e0 v\u1ecb tr\u00ed \u0111\u1eb7t:<br \/>\n  &#8211; 500\u20131,000L: 0.6\u20130.7 mm (304\/316)<br \/>\n  &#8211; 1,500\u20132,000L: 0.7\u20130.8 mm<br \/>\n  &#8211; >2,000L: \u22650.8 mm (t\u00f9y thi\u1ebft k\u1ebf g\u00e2n, ch\u00e2n \u0111\u1ee1)<br \/>\n&#8211; \u01afu ti\u00ean n\u1eafp k\u00edn, c\u00f3 l\u01b0\u1edbi ch\u1ed1ng c\u00f4n tr\u00f9ng v\u00e0 \u1ed1ng th\u00f4ng h\u01a1i; tr\u00e1nh n\u01b0\u1edbc m\u01b0a\/ phun s\u01b0\u01a1ng bi\u1ec3n l\u1ecdt v\u00e0o.<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n ti\u1ebfp x\u00fac n\u01b0\u1edbc: \u0111\u1ed3ng b\u1ed9 c\u1ea5p 316 (van, bul\u00f4ng, phao) khi d\u00f9ng b\u1ed3n 316.<\/p>\n<h3>L\u1eafp \u0111\u1eb7t chu\u1ea9n<\/h3>\n<p>&#8211; C\u00e1ch ly b\u1ed3n kh\u1ecfi th\u00e9p carbon\/\u0111\u1ed3ng m\u1ea1 k\u1ebdm b\u1eb1ng \u0111\u1ec7m nh\u1ef1a\/EPDM \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.<br \/>\n&#8211; Ch\u00e2n \u0111\u1ee1 c\u1ee9ng, ph\u1eb3ng; tr\u00e1nh \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9 l\u00ean v\u1ecf b\u1ed3n.<br \/>\n&#8211; Tr\u00e1nh \u0111\u1eb7t s\u00e1t \u1ed1ng kh\u00f3i, khu h\u00f3a ch\u1ea5t, h\u01a1i axit.<\/p>\n<h3>V\u1eadn h\u00e0nh \u2013 b\u1ea3o tr\u00ec<\/h3>\n<p>&#8211; X\u1ea3 c\u1eb7n v\u00e0 v\u1ec7 sinh 3\u20136 th\u00e1ng\/l\u1ea7n; tr\u00e1nh \u0111\u1ec3 n\u01b0\u1edbc t\u00f9 qu\u00e1 l\u00e2u.<br \/>\n&#8211; N\u1ebfu kh\u1eed tr\u00f9ng b\u1eb1ng NaOCl:<br \/>\n  &#8211; Pha lo\u00e3ng \u0111\u1ebfn 50\u2013100 mg\/L, khu\u1ea5y \u0111\u1ec1u, ti\u1ebfp x\u00fac 30\u201360 ph\u00fat, x\u1ea3 \u2013 tr\u00e1ng k\u1ef9.<br \/>\n  &#8211; Kh\u00f4ng pha thu\u1ed1c t\u1ea9y tr\u1ef1c ti\u1ebfp trong b\u1ed3n ch\u1ee9a \u00edt n\u01b0\u1edbc.<br \/>\n&#8211; Ki\u1ec3m tra m\u1ed1i h\u00e0n, ch\u00e2n \u0111\u1ebf, c\u1ed5 \u1ed1ng \u2013 n\u01a1i d\u1ec5 r\u1ed7\/khe; x\u1eed l\u00fd s\u1edbm.<\/p>\n<h2 id=\"toc-5-ap-dung-tai-viet-nam-vai-kich-ban-thuc-te\">\u00c1p d\u1ee5ng t\u1ea1i Vi\u1ec7t Nam: v\u00e0i k\u1ecbch b\u1ea3n th\u1ef1c t\u1ebf<\/h2>\n<p>&#8211; H\u1ed9 gia \u0111\u00ecnh t\u1ea1i H\u00e0 N\u1ed9i (n\u01b0\u1edbc m\u00e1y, Cl- th\u1ea5p, b\u1ed3n \u0111\u1eb7t m\u00e1i che): 304L \u0111\u1ee7, chi ph\u00ed t\u1ed1i \u01b0u.<br \/>\n&#8211; Resort C\u00e1t B\u00e0 (phun s\u01b0\u01a1ng bi\u1ec3n, b\u1ed3n ngo\u00e0i tr\u1eddi): 316L cho th\u00e2n b\u1ed3n v\u00e0 ph\u1ee5 ki\u1ec7n; v\u1ec7 sinh m\u1eb7t ngo\u00e0i h\u00e0ng qu\u00fd.<br \/>\n&#8211; Nh\u00e0 m\u00e1y \u0111\u1ed3 u\u1ed1ng ngo\u1ea1i th\u00e0nh, c\u00f3 kh\u1eed tr\u00f9ng b\u1ed3n \u0111\u1ecbnh k\u1ef3: 316L; quy tr\u00ecnh CIP ki\u1ec3m so\u00e1t clo, pH, th\u1eddi gian ti\u1ebfp x\u00fac.<br \/>\n&#8211; Chung c\u01b0 g\u1ea7n bi\u1ec3n, m\u00e1i t\u00f4n n\u00f3ng >50\u00b0C: 316L v\u00e0 che n\u1eafng; l\u01b0u \u00fd gi\u00e3n n\u1edf nhi\u1ec7t, tr\u00e0n \u2013 x\u1ea3 t\u1ed1t.<\/p>\n<h2 id=\"toc-6-checklist-dat-mua-bon-nuoc-inox\">Checklist \u0111\u1eb7t mua b\u1ed3n n\u01b0\u1edbc inox<\/h2>\n<p>&#8211; C\u1ea5p v\u1eadt li\u1ec7u: 304L hay 316L? C\u00f3 ch\u1ee9ng ch\u1ec9 m\u00e1c (Mill Test Certificate) theo ASTM A240 kh\u00f4ng?<br \/>\n&#8211; X\u1eed l\u00fd sau h\u00e0n: \u0111\u00e3 t\u1ea9y\/ passivation v\u00e0 r\u1eeda trung h\u00f2a?<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y th\u1ef1c t\u1ebf theo dung t\u00edch? B\u1ec1 m\u1eb7t 2B\/BA?<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n ti\u1ebfp x\u00fac n\u01b0\u1edbc \u0111\u1ed3ng b\u1ed9 c\u1ea5p inox n\u00e0o?<br \/>\n&#8211; \u0110i\u1ec1u ki\u1ec7n b\u1ea3o h\u00e0nh \u0103n m\u00f2n t\u1ea1i v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3 (ven bi\u1ec3n\/kh\u1eed tr\u00f9ng)?<br \/>\n&#8211; H\u01b0\u1edbng d\u1eabn v\u1ec7 sinh\/kh\u1eed tr\u00f9ng an to\u00e0n cho inox k\u00e8m theo.<\/p>\n<h2 id=\"toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/h2>\n<p>&#8211; Nickel Institute \u2013 Stainless Steels in Potable Water and Drinking Water Treatment (c\u00e1c h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn theo Cl-, nhi\u1ec7t \u0111\u1ed9, clo kh\u1eed tr\u00f9ng).<br \/>\n&#8211; ASSDA (Australian Stainless Steel Development Association) \u2013 Guidelines on Stainless Steel and Chloride in Potable Water; Tea staining technical bulletin.<br \/>\n&#8211; ASTM A240 \/ A240M \u2013 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip.<br \/>\n&#8211; EN 10088 \u2013 Stainless steels \u2014 List of stainless steels.<br \/>\n&#8211; QCVN 01-1:2018\/BYT \u2013 Quy chu\u1ea9n k\u1ef9 thu\u1eadt qu\u1ed1c gia v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc s\u1ea1ch s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch sinh ho\u1ea1t (gi\u1edbi h\u1ea1n Cl-, clo d\u01b0, pH).<br \/>\n&#8211; WHO Guidelines for Drinking-water Quality \u2013 Disinfection and residual chlorine guidance.<\/p>\n<h2 id=\"toc-8-ket-luan-chon-dung-mac-inox-cho-nguon-nuoc-sach\">K\u1ebft lu\u1eadn: Ch\u1ecdn \u0111\u00fang m\u00e1c inox cho ngu\u1ed3n n\u01b0\u1edbc s\u1ea1ch<\/h2>\n<p>&#8211; N\u1ebfu b\u1ea1n d\u00f9ng n\u01b0\u1edbc m\u00e1y n\u1ed9i \u0111\u00f4, Cl- th\u1ea5p, b\u1ed3n \u0111\u1eb7t n\u01a1i kh\u00f4 tho\u00e1ng v\u00e0 b\u1ea3o d\u01b0\u1ee1ng \u0111\u00fang: 304L l\u00e0 l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 \u2013 an to\u00e0n, kinh t\u1ebf.<br \/>\n&#8211; N\u1ebfu b\u1ed3n \u0111\u1eb7t ven bi\u1ec3n, ti\u1ebfp x\u00fac s\u01b0\u01a1ng mu\u1ed1i, c\u00f3 kh\u1eed tr\u00f9ng clo \u0111\u1ecbnh k\u1ef3, ho\u1eb7c c\u1ea7n tu\u1ed5i th\u1ecd t\u1ed1i \u0111a v\u1edbi r\u1ee7i ro t\u1ed1i thi\u1ec3u: 316L l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u vi\u1ec7t.<br \/>\n&#8211; D\u00f9 ch\u1ecdn 304 hay 316, ch\u1ea5t l\u01b0\u1ee3ng h\u00e0n, t\u1ea9y\/passivation, thi\u1ebft k\u1ebf h\u1ea1n ch\u1ebf khe h\u1edf, ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9 v\u00e0 quy tr\u00ecnh v\u1ec7 sinh \u0111\u00fang l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh tu\u1ed5i th\u1ecd.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n theo ngu\u1ed3n n\u01b0\u1edbc v\u00e0 v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u1ee5 th\u1ec3? Li\u00ean h\u1ec7 Inox Cuong Thinh \u0111\u1ec3 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb t\u1ed1i \u01b0u v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh Inox 304 vs 316 cho b\u1ed3n n\u01b0\u1edbc: ch\u1ed1ng \u0103n m\u00f2n Cl-, clo kh\u1eed tr\u00f9ng, m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n, \u0111\u1ed9 b\u1ec1n m\u1ed1i h\u00e0n, chi ph\u00ed v\u00f2ng \u0111\u1eddi. Khuy\u1ebfn ngh\u1ecb ch\u1ecdn \u0111\u00fang.<\/p>\n","protected":false},"author":7,"featured_media":1005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1717","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=1717"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1717\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1005"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}