{"id":1715,"date":"2026-02-25T00:35:36","date_gmt":"2026-02-24T17:35:36","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/khi-nao-nen-dung-inox-lam-ket-cau-chiu-luc-tieu-chi-quyet-dinh\/"},"modified":"2026-02-25T00:35:36","modified_gmt":"2026-02-24T17:35:36","slug":"khi-nao-nen-dung-inox-lam-ket-cau-chiu-luc-tieu-chi-quyet-dinh","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/khi-nao-nen-dung-inox-lam-ket-cau-chiu-luc-tieu-chi-quyet-dinh\/","title":{"rendered":"Khi n\u00e0o n\u00ean d\u00f9ng inox l\u00e0m k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c? Ti\u00eau ch\u00ed quy\u1ebft \u0111\u1ecbnh"},"content":{"rendered":"

Inox c\u00f3 chi ph\u00ed \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n th\u00e9p carbon, nh\u01b0ng trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n c\u00f4ng tr\u00ecnh, \u0111\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 \u201cph\u01b0\u01a1ng \u00e1n t\u1ed1t h\u01a1n\u201d m\u00e0 l\u00e0 l\u1ef1a ch\u1ecdn b\u1eaft bu\u1ed9c n\u1ebfu mu\u1ed1n \u0111\u1ea3m b\u1ea3o an to\u00e0n, tu\u1ed5i th\u1ecd thi\u1ebft k\u1ebf 50\u2013100 n\u0103m v\u00e0 t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi th\u1ea5p. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o c\u00e2u h\u1ecfi: khi n\u00e0o n\u00ean d\u00f9ng inox l\u00e0m k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c, ch\u1ecdn m\u00e1c n\u00e0o, thi\u1ebft k\u1ebf \u2013 thi c\u00f4ng ra sao \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n ch\u1eafc trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu Vi\u1ec7t Nam.<\/p>\n

\nNh\u1eefng \u201ct\u00edn hi\u1ec7u \u0111\u1ecf\u201d cho th\u1ea5y inox l\u00e0 l\u1ef1a ch\u1ecdn c\u1ea7n thi\u1ebft
\n<\/h2>\n

– M\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n n\u1eb7ng theo ISO 9223 (C4\u2013C5\/CX): ven bi\u1ec3n \u22645 km, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u22641 km; khu c\u00f4ng nghi\u1ec7p c\u00f3 SO2\/NOx cao; v\u00f9ng phun s\u01b0\u01a1ng mu\u1ed1i, b\u1ebfn t\u00e0u, c\u1ea7u c\u1ea3ng.
\n– K\u1ebft c\u1ea5u ngo\u00e0i tr\u1eddi\/kh\u00f3 ti\u1ebfp c\u1eadn b\u1ea3o tr\u00ec: lan can c\u1ea7u bi\u1ec3n, m\u00e1i che cao t\u1ea7ng, li\u00ean k\u1ebft facade, neo m\u00e1i, thang \u2013 s\u00e0n c\u00f4ng t\u00e1c \u1edf nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t, x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i.
\n– Y\u00eau c\u1ea7u tu\u1ed5i th\u1ecd \u226550 n\u0103m v\u1edbi b\u1ea3o tr\u00ec t\u1ed1i thi\u1ec3u ho\u1eb7c y\u00eau c\u1ea7u kh\u00f4ng s\u01a1n\/m\u1ea1 do th\u1ea9m m\u1ef9.
\n– \u0110i\u1ec1u ki\u1ec7n nhi\u1ec7t cao ho\u1eb7c chi\u1ebfn l\u01b0\u1ee3c ph\u00f2ng ch\u00e1y mu\u1ed1n gi\u1ea3m\/lo\u1ea1i b\u1ecf l\u1edbp s\u01a1n ch\u1ed1ng ch\u00e1y: nh\u00e0 ga, h\u1ea7m, s\u00e2n bay, c\u00f4ng tr\u00ecnh c\u00f4ng c\u1ed9ng \u0111\u00f4ng ng\u01b0\u1eddi.
\n– M\u00f4i tr\u01b0\u1eddng chloride \u1ea5m \u1ea9m trong nh\u00e0: b\u1ec3 b\u01a1i trong nh\u00e0, ph\u00f2ng x\u00f4ng h\u01a1i c\u00f3 kh\u1eed tr\u00f9ng chlorine.
\n– R\u1ee7i ro nhi\u1ec5m b\u1ea9n, y\u00eau c\u1ea7u v\u1ec7 sinh: nh\u00e0 m\u00e1y th\u1ef1c ph\u1ea9m, \u0111\u1ed3 u\u1ed1ng, d\u01b0\u1ee3c, n\u01b0\u1edbc s\u1ea1ch.
\n– T\u1ea3i tr\u1ecdng \u0111\u1ed9ng\/m\u1ecfi v\u00e0\/ho\u1eb7c c\u1ea7n \u0111\u1ed9 d\u1ebbo cao, k\u1ec3 c\u1ea3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p: c\u1ea7u \u0111i b\u1ed9, c\u1ea7u c\u1ea3ng, k\u1ebft c\u1ea5u c\u00f3 va \u0111\u1eadp.
\n– B\u00e0i to\u00e1n v\u00f2ng \u0111\u1eddi cho th\u1ea5y th\u00e9p s\u01a1n\/m\u1ea1 k\u1ebdm ph\u1ea3i b\u1ea3o tr\u00ec nhi\u1ec1u chu k\u1ef3, r\u1ee7i ro d\u1eebng v\u1eadn h\u00e0nh cao.<\/p>\n

Khi xu\u1ea5t hi\u1ec7n t\u1eeb 2\u20133 d\u1ea5u hi\u1ec7u tr\u00ean, inox th\u01b0\u1eddng mang l\u1ea1i t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu th\u1ea5p h\u01a1n v\u00e0 r\u1ee7i ro k\u1ef9 thu\u1eadt nh\u1ecf h\u01a1n so v\u1edbi th\u00e9p carbon s\u01a1n\/m\u1ea1 k\u1ebdm.<\/p>\n

\nSo s\u00e1nh k\u1ef9 thu\u1eadt nhanh: Inox vs. th\u00e9p carbon s\u01a1n\/m\u1ea1 v\u00e0 v\u1eadt li\u1ec7u kh\u00e1c
\n<\/h2>\n

– Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n: inox t\u1ea1o l\u1edbp th\u1ee5 \u0111\u1ed9ng t\u1ef1 ph\u1ee5c h\u1ed3i. M\u00e1c 316L v\u00e0 duplex 2205 kh\u00e1ng r\u1ed7 pitting\/khe t\u1ed1t trong m\u00f4i tr\u01b0\u1eddng chloride; 304\/201 kh\u00f4ng ph\u00f9 h\u1ee3p g\u1ea7n bi\u1ec3n.
\n– C\u01b0\u1eddng \u0111\u1ed9:
\n – Austenitic 304\/316: Rp0.2 ~ 205\u2013310 MPa (c\u00f3 th\u1ec3 h\u00f3a b\u1ec1n ngu\u1ed9i).
\n – Duplex 2304\/2205: Rp0.2 ~ 400\u2013550 MPa, cho ph\u00e9p gi\u1ea3m chi\u1ec1u d\u00e0y\/kh\u1ed1i l\u01b0\u1ee3ng 20\u201340% so v\u1edbi austenitic\/CS \u1edf c\u00f9ng \u0111i\u1ec1u ki\u1ec7n gi\u1edbi h\u1ea1n.
\n– M\u00f4 \u0111un \u0111\u00e0n h\u1ed3i: ~193\u2013200 GPa (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng th\u00e9p carbon), ki\u1ec3m so\u00e1t v\u00f5ng nh\u01b0 th\u00e9p th\u01b0\u1eddng.
\n– H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t: austenitic ~16\u201317 \u00b5m\/m.K (cao h\u01a1n th\u00e9p carbon ~12); duplex ~13 \u00b5m\/m.K. C\u1ea7n khe co gi\u00e3n ph\u00f9 h\u1ee3p cho nh\u1ecbp d\u00e0i\/bao che.
\n– H\u1ecfa ho\u1ea1n: inox gi\u1eef c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 \u0111\u1ed9 c\u1ee9ng t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 cao; nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p c\u1ea7n \u00edt ho\u1eb7c kh\u00f4ng c\u1ea7n l\u1edbp ch\u1ed1ng ch\u00e1y so v\u1edbi th\u00e9p carbon (tham kh\u1ea3o Euro Inox\/Nickel Institute).
\n– M\u1ecfi\/\u0111\u1ed9 dai: austenitic c\u00f3 \u0111\u1ed9 d\u1ebbo v\u00e0 \u0111\u1ed9 dai va \u0111\u1eadp cao; duplex c\u00f3 gi\u1edbi h\u1ea1n ch\u1ea3y cao v\u00e0 kh\u1ea3 n\u0103ng m\u1ecfi t\u1ed1t cho c\u1ea7u \u2013 b\u1ec7 m\u00e1y.
\n– Th\u1ea9m m\u1ef9\/b\u1ea3o tr\u00ec: b\u1ec1 m\u1eb7t No.4\/2B\/Bead-blast \u1ed5n \u0111\u1ecbnh, \u201ct\u1ef1 l\u00e0m m\u1edbi\u201d sau tr\u1ea7y x\u01b0\u1edbc nh\u1eb9; kh\u00f4ng bong tr\u00f3c s\u01a1n.<\/p>\n

\n\u0110\u00e1nh gi\u00e1 m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c: b\u01b0\u1edbc quy\u1ebft \u0111\u1ecbnh
\n<\/h2>\n

\nPh\u00e2n lo\u1ea1i theo ISO 9223 v\u00e0 th\u1ef1c t\u1ebf Vi\u1ec7t Nam
\n<\/h3>\n

– C3 (\u0111\u00f4 th\u1ecb n\u1ed9i \u0111\u1ecba, \u00f4 nhi\u1ec5m v\u1eeba): 304\/304L c\u00f3 th\u1ec3 d\u00f9ng cho c\u1ea5u ki\u1ec7n ch\u1ecbu l\u1ef1c kh\u00f4ng ti\u1ebfp x\u00fac chloride tr\u1ef1c ti\u1ebfp, n\u1ebfu chi ti\u1ebft v\u00e0 tho\u00e1t n\u01b0\u1edbc t\u1ed1t.
\n– C4 (ven bi\u1ec3n 1\u20135 km, c\u00f4ng nghi\u1ec7p n\u1eb7ng): 316L th\u01b0\u1eddng l\u00e0 t\u1ed1i thi\u1ec3u; chi ti\u1ebft l\u1ed9 thi\u00ean\/\u0111\u1ecdng mu\u1ed1i n\u00ean c\u00e2n nh\u1eafc duplex 2304\/2205.
\n– C5\/CX (\u22641 km b\u1edd bi\u1ec3n, v\u00f9ng s\u01b0\u01a1ng mu\u1ed1i\/phun s\u00f3ng, b\u1ebfn c\u1ea3ng): duplex 2205 tr\u1edf l\u00ean.
\n– B\u1ec3 b\u01a1i trong nh\u00e0, spa: nguy c\u01a1 SCC cho 304\/316 \u1edf 50\u201360\u00b0C; \u01b0u ti\u00ean duplex 2205 ho\u1eb7c austenitic cao molybden 904L\/254SMO cho treo tr\u1ea7n\/k\u1ebft c\u1ea5u cao.
\n– N\u01b0\u1edbc th\u1ea3i\/c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t: 316L\/2205 t\u00f9y chloride, nhi\u1ec7t \u0111\u1ed9, H2S\/Cl-; c\u1ea7n ki\u1ec3m tra h\u00f3a ch\u1ea5t c\u1ee5 th\u1ec3.<\/p>\n

\nD\u00f9ng PREN \u0111\u1ec3 ch\u1ecdn m\u00e1c ch\u1ed1ng r\u1ed7
\n<\/h3>\n

PREN \u2248 %Cr + 3.3\u00d7%Mo + 16\u00d7%N.
\n– 304L: ~18\u201319 (n\u1ed9i \u0111\u1ecba kh\u00f4, C3).
\n– 316L: ~24 (ven bi\u1ec3n nh\u1eb9\/C4).
\n– 2205: ~34\u201336 (C5\/CX, phun s\u00f3ng).
\n– 904L\/254SMO: \u226534\u201342 (chloride r\u1ea5t cao, nhi\u1ec7t \u0111\u1ed9 cao).
\nNgu\u1ed3n: Nickel Institute, IMOA.<\/p>\n

\nKhi n\u00e0o b\u00e0i to\u00e1n v\u00f2ng \u0111\u1eddi \u201cch\u1ed1t\u201d inox l\u00e0 r\u1ebb h\u01a1n?
\n<\/h2>\n

– Th\u00e9p s\u01a1n\/m\u1ea1 y\u00eau c\u1ea7u chu k\u1ef3 b\u1ea3o tr\u00ec 7\u201312 n\u0103m; m\u1ed7i l\u1ea7n gi\u00e0n gi\u00e1o\/ng\u1eebng v\u1eadn h\u00e0nh r\u1ea5t t\u1ed1n k\u00e9m.
\n– V\u1edbi tu\u1ed5i th\u1ecd m\u1ee5c ti\u00eau 50 n\u0103m: ch\u1ec9 c\u1ea7n \u22652 chu k\u1ef3 b\u1ea3o tr\u00ec l\u1edbn l\u00e0 NPV th\u01b0\u1eddng v\u01b0\u1ee3t chi ph\u00ed \u0111\u1ea7u t\u01b0 inox, ch\u01b0a k\u1ec3 r\u1ee7i ro \u0103n m\u00f2n c\u1ee5c b\u1ed9 g\u00e2y s\u1ef1 c\u1ed1.
\n– Duplex (Rp0.2 ~450\u2013550 MPa) c\u00f3 th\u1ec3 gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng 20\u201340%, b\u00f9 m\u1ed9t ph\u1ea7n ch\u00eanh l\u1ec7ch gi\u00e1\/kg.
\nG\u1ee3i \u00fd: l\u1eadp LCC g\u1ed3m CAPEX + OPEX b\u1ea3o tr\u00ec + r\u1ee7i ro d\u1eebng m\u00e1y, chi\u1ebft kh\u1ea5u 6\u20138%\/n\u0103m. Nhi\u1ec1u nghi\u00ean c\u1ee9u c\u1ee7a Euro Inox\/NI cho th\u1ea5y m\u1ed1c h\u00f2a v\u1ed1n 10\u201320 n\u0103m \u1edf v\u00f9ng C4\u2013C5.<\/p>\n

\nL\u1ef1a ch\u1ecdn m\u00e1c inox theo t\u00ecnh hu\u1ed1ng ti\u00eau bi\u1ec3u
\n<\/h2>\n

– Lan can, s\u00e0n, v\u00ec k\u00e8o ngo\u00e0i tr\u1eddi t\u1ea1i H\u00e0 N\u1ed9i\/H\u1ea3i Ph\u00f2ng c\u00e1ch bi\u1ec3n >5 km (C3\u2013C4): 316L, b\u1ec1 m\u1eb7t No.4\/Bead-blast, Ra \u22640.5 \u00b5m \u0111\u1ec3 h\u1ea1n ch\u1ebf \u201ctea staining\u201d.
\n– K\u1ebft c\u1ea5u c\u1ea7u \u0111i b\u1ed9\/nh\u00e0 ga ven bi\u1ec3n \u0110\u00e0 N\u1eb5ng, Nha Trang (C4\u2013C5, s\u01b0\u01a1ng mu\u1ed1i): duplex 2205 cho d\u1ea7m h\u1ed9p, 316L cho h\u1ea1ng m\u1ee5c ph\u1ee5 tr\u1ee3 \u00edt \u0111\u1ecdng mu\u1ed1i.
\n– B\u1ec3 b\u01a1i trong nh\u00e0, c\u00f4ng vi\u00ean n\u01b0\u1edbc: tr\u00e1nh 304\/201 cho treo tr\u1ea7n\/h\u1ec7 gi\u1eb1ng; d\u00f9ng 2205 ho\u1eb7c 904L (nguy c\u01a1 SCC).
\n– Nh\u00e0 m\u00e1y x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i\/n\u01b0\u1edbc m\u1eb7n l\u1ee3: 316L cho b\u1ec3 kh\u00ed ti\u1ebfp x\u00fac; 2205 cho bul\u00f4ng neo, gi\u00e1 \u0111\u1ee1 m\u00e1y b\u01a1m v\u00f9ng phun.
\n– Thanh neo \u2013 bu l\u00f4ng ngo\u00e0i tr\u1eddi: A4-70\/A4-80 (316\/316L) cho C3\u2013C4; duplex\/si\u00eau austenitic cho C5\/CX.
\n– Th\u00e9p r\u00e2u\/neo facade kh\u00f3 b\u1ea3o tr\u00ec: t\u1ed1i thi\u1ec3u 316L; g\u1ea7n bi\u1ec3n d\u00f9ng 2205.
\n– Th\u00e9p thanh c\u1ed1t trong b\u00ea t\u00f4ng v\u00f9ng chloride: rebar inox 2304\/2205 cho b\u1ec7 tr\u1ee5 c\u1ea7u, b\u1ebfn c\u1ea3ng (\u0111\u00e3 ch\u1ee9ng minh t\u0103ng tu\u1ed5i th\u1ecd g\u1ea5p nhi\u1ec1u l\u1ea7n so v\u1edbi th\u00e9p \u0111en c\u00f3 b\u1ea3o v\u1ec7).<\/p>\n

\nTi\u00eau chu\u1ea9n thi\u1ebft k\u1ebf v\u00e0 l\u01b0u \u00fd k\u1ef9 thu\u1eadt quan tr\u1ecdng
\n<\/h2>\n

– Ti\u00eau chu\u1ea9n n\u00ean d\u00f9ng:
\n – EN 1993-1-4 (Eurocode 3, ph\u1ea7n inox) ho\u1eb7c AISC 370-22 (Structural Stainless Steel).
\n – V\u1eadt li\u1ec7u: EN 10088\/ASTM A240 (t\u1ea5m), A276\/A479 (thanh), A312 (\u1ed1ng), A554 (\u1ed1ng trang tr\u00ed \u2013 ch\u1ec9 d\u00f9ng khi ph\u00f9 h\u1ee3p).
\n– T\u00ednh to\u00e1n: m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i ~200 GPa; \u0111\u01b0\u1eddng cong \u1ee9ng x\u1eed phi tuy\u1ebfn (austenitic) \u2013 xem h\u1ec7 s\u1ed1 trong EN 1993-1-4\/AISC 370.
\n– Li\u00ean k\u1ebft bul\u00f4ng: ch\u00fa \u00fd hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t ren (galling) c\u1ee7a inox; d\u00f9ng m\u1ee1 ch\u1ed1ng k\u1eb9t, l\u1eafp t\u1ed1c \u0111\u1ed9 th\u1ea5p, k\u1ebft h\u1ee3p v\u1eadt li\u1ec7u kh\u00e1c c\u1ea5p b\u1ec1n ph\u00f9 h\u1ee3p, long \u0111en c\u00e1ch \u0111i\u1ec7n khi gh\u00e9p kim lo\u1ea1i kh\u00e1c \u0111\u1ec3 tr\u00e1nh \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a.
\n– H\u00e0n v\u00e0 ph\u1ee5c h\u1ed3i b\u1ec1 m\u1eb7t:
\n – D\u00f9ng v\u1eadt li\u1ec7u h\u00e0n t\u01b0\u01a1ng th\u00edch (308L cho 304L; 316L cho 316L; 2209 cho 2205).
\n – Lo\u1ea1i b\u1ecf v\u1ebft nhi\u1ec7t (heat tint), t\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ASTM A380\/A967 \u0111\u1ec3 kh\u00f4i ph\u1ee5c l\u1edbp th\u1ee5 \u0111\u1ed9ng.
\n – Tr\u00e1nh nhi\u1ec5m b\u1ea9n s\u1eaft: d\u1ee5ng c\u1ee5 ri\u00eang cho inox, che ph\u1ee7 trong x\u01b0\u1edfng.
\n– Chi ti\u1ebft h\u00f3a ch\u1ed1ng \u0103n m\u00f2n:
\n – Tr\u00e1nh khe h\u1edf, t\u00fai n\u01b0\u1edbc; thi\u1ebft k\u1ebf tho\u00e1t n\u01b0\u1edbc t\u1ed1t; bo tr\u00f2n m\u00e9p, m\u00e0i min.
\n – Ch\u1ecdn \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t th\u1ea5p (Ra \u22640.5 \u00b5m) cho v\u00f9ng ven bi\u1ec3n; lau r\u1eeda \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 gi\u1ea3m tea staining.
\n– D\u00e3n n\u1edf nhi\u1ec7t: austenitic cao h\u01a1n th\u00e9p carbon; b\u1ed1 tr\u00ed khe\/neo tr\u01b0\u1ee3t cho nh\u1ecbp d\u00e0i \u2013 panel bao che.
\n– Ma s\u00e1t \u2013 l\u1eafp gh\u00e9p ma s\u00e1t: ki\u1ec3m tra h\u1ec7 s\u1ed1 tr\u01b0\u1ee3t b\u1ec1 m\u1eb7t theo ti\u00eau chu\u1ea9n; n\u1ebfu kh\u00f4ng ch\u1ee9ng minh \u0111\u01b0\u1ee3c, thi\u1ebft k\u1ebf li\u00ean k\u1ebft ch\u1ecbu n\u00e9n \u00e9p\/\u0111\u00e2m l\u1ed7 theo AISC\/EN.<\/p>\n

\nN\u0103ng l\u1ef1c cung \u1ee9ng v\u00e0 d\u1ea1ng s\u1ea3n ph\u1ea9m t\u1ea1i Vi\u1ec7t Nam
\n<\/h2>\n

– T\u1ea5m\/plate: 2\u201330 mm cho ch\u1ebf t\u1ea1o d\u1ea7m h\u1ed9p, b\u1ea3n b\u1ee5ng \u2013 bi\u00ean, s\u00e0n grating.
\n– H\u00ecnh c\u00e1n\/\u0111\u1ecbnh h\u00ecnh: L, U\/C, d\u1ea7m h\u1ed9p h\u00e0n t\u1eeb t\u00f4n; h\u00ecnh c\u00e1n n\u00f3ng inox chuy\u00ean d\u1ee5ng \u00edt ph\u1ed5 bi\u1ebfn, th\u01b0\u1eddng gia c\u00f4ng t\u1eeb t\u1ea5m.
\n– \u1ed0ng k\u1ebft c\u1ea5u: \u1ed1ng h\u00e0n inox c\u00f4ng nghi\u1ec7p (ASTM A312) v\u00e0 \u1ed1ng trang tr\u00ed d\u00e0y (ASTM A554) \u2013 ch\u1ecdn chu\u1ea9n theo t\u1ea3i tr\u1ecdng.
\n– Thanh ren\/bu l\u00f4ng\/nut: A2 (304), A4 (316), v\u00e0 duplex nh\u1eadp kh\u1ea9u theo y\u00eau c\u1ea7u.<\/p>\n

Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p \u0111\u1ec3 x\u00e1c minh ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u, ch\u1ee9ng ch\u1ec9 m\u00e1c th\u00e9p, ki\u1ec3m tra th\u00e0nh ph\u1ea7n (PMI) n\u1ebfu h\u1ea1ng m\u1ee5c tr\u1ecdng y\u1ebfu.<\/p>\n

\nQuy tr\u00ecnh 6 b\u01b0\u1edbc ch\u1ecdn inox cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c
\n<\/h2>\n

1) X\u00e1c \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng theo ISO 9223, kho\u1ea3ng c\u00e1ch t\u1edbi bi\u1ec3n, nhi\u1ec7t \u0111\u1ed9, h\u00f3a ch\u1ea5t, \u0111\u1ed9 \u1ea9m.
\n2) \u0110\u1eb7t m\u1ee5c ti\u00eau tu\u1ed5i th\u1ecd v\u00e0 chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o tr\u00ec (v\u00ed d\u1ee5 50\u2013100 n\u0103m, t\u1ed1i thi\u1ec3u can thi\u1ec7p).
\n3) So s\u00e1nh LCC gi\u1eefa inox v\u00e0 th\u00e9p s\u01a1n\/m\u1ea1 (bao g\u1ed3m chi ph\u00ed d\u1eebng v\u1eadn h\u00e0nh).
\n4) Ch\u1ecdn m\u00e1c b\u1eb1ng PREN v\u00e0 d\u1eef li\u1ec7u SCC: 304L\/316L\/2304\/2205\/904L t\u00f9y m\u00f4i tr\u01b0\u1eddng.
\n5) Ch\u1ecdn d\u1ea1ng s\u1ea3n ph\u1ea9m, ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf (EN 1993-1-4\/AISC 370); t\u00ednh to\u00e1n chi\u1ec1u d\u00e0y\/n\u1ed1i gh\u00e9p.
\n6) Quy \u0111\u1ecbnh thi c\u00f4ng: v\u1eadt li\u1ec7u h\u00e0n, t\u1ea9y \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a, c\u00e1ch ly kim lo\u1ea1i kh\u00e1c, ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 k\u1ebf ho\u1ea1ch v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3.<\/p>\n

\nSai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh
\n<\/h2>\n

– D\u00f9ng 304\/201 cho ven bi\u1ec3n v\u00e0 b\u1ec3 b\u01a1i trong nh\u00e0: r\u1ee7i ro r\u1ed7, \u0103n m\u00f2n khe v\u00e0 SCC.
\n– B\u1ecf qua l\u00e0m s\u1ea1ch \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a sau h\u00e0n: l\u1edbp nhi\u1ec7t lam g\u00e2y r\u1ed7 nhanh.
\n– Pha tr\u1ed9n inox v\u1edbi th\u00e9p \u0111en m\u00e0 kh\u00f4ng c\u00e1ch ly: \u0103n m\u00f2n \u0111i\u1ec7n h\u00f3a\/nhu\u1ed1m g\u1ec9.
\n– L\u1ea5y \u1ed1ng trang tr\u00ed m\u1ecfng (A554) l\u00e0m c\u1ed9t\/d\u1ea7m ch\u1ecbu l\u1ef1c m\u00e0 kh\u00f4ng ki\u1ec3m tra b\u1ec1 d\u00e0y \u2013 ti\u00eau chu\u1ea9n.
\n– Ch\u1ec9 so CAPEX, kh\u00f4ng l\u00e0m LCC: quy\u1ebft \u0111\u1ecbnh sai m\u00f4i tr\u01b0\u1eddng C4\u2013C5.
\n– Thi\u1ebft k\u1ebf chi ti\u1ebft \u0111\u1ecdng n\u01b0\u1edbc, khe h\u1edf si\u00eau nh\u1ecf: t\u0103ng r\u1ee7i ro \u0103n m\u00f2n khe.<\/p>\n

\nV\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng minh h\u1ecda
\n<\/h2>\n

– C\u1ea7u \u0111i b\u1ed9 ven bi\u1ec3n s\u1eed d\u1ee5ng d\u1ea7m h\u1ed9p 2205: b\u1ecf l\u1edbp ch\u1ed1ng ch\u00e1y nh\u1edd kh\u1ea3 n\u0103ng gi\u1eef c\u01b0\u1eddng \u0111\u1ed9 \u1edf nhi\u1ec7t cao, ch\u1ec9 c\u1ea7n v\u1ec7 sinh \u0111\u1ecbnh k\u1ef3 nh\u1eb9.
\n– Lan can \u2013 tay v\u1ecbn c\u1ea7u v\u01b0\u1ee3t \u0111\u00f4 th\u1ecb d\u00f9ng 316L No.4: 10+ n\u0103m kh\u00f4ng s\u01a1n l\u1ea1i, chi ph\u00ed b\u1ea3o tr\u00ec th\u1ea5p, th\u1ea9m m\u1ef9 \u1ed5n \u0111\u1ecbnh.
\n– Nh\u00e0 m\u00e1y n\u01b0\u1edbc th\u1ea3i: khung \u0111\u1ee1, s\u00e0n thao t\u00e1c 316L \u1edf v\u00f9ng \u1ea9m; bul\u00f4ng\/gi\u00e1 \u0111\u1ee1 v\u00f9ng phun d\u00f9ng 2205 gi\u1ea3m thay th\u1ebf ngo\u00e0i k\u1ebf ho\u1ea1ch.<\/p>\n

\nK\u1ebft lu\u1eadn: Khi n\u00e0o inox l\u00e0 \u201cb\u1eaft bu\u1ed9c\u201d cho k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c?
\n<\/h2>\n

– Trong m\u00f4i tr\u01b0\u1eddng C4\u2013C5\/CX, v\u1ecb tr\u00ed kh\u00f3 b\u1ea3o tr\u00ec, y\u00eau c\u1ea7u tu\u1ed5i th\u1ecd \u226550 n\u0103m, ho\u1eb7c khi chi\u1ebfn l\u01b0\u1ee3c PCCC mu\u1ed1n t\u1ed1i gi\u1ea3n l\u1edbp b\u1ea3o v\u1ec7, inox (\u01b0u ti\u00ean 316L\/2205) g\u1ea7n nh\u01b0 l\u00e0 l\u1ef1a ch\u1ecdn b\u1eaft bu\u1ed9c \u0111\u1ec3 gi\u1ea3m r\u1ee7i ro v\u00e0 t\u1ed1i \u01b0u t\u1ed5ng chi ph\u00ed.
\n– 304\/304L ch\u1ec9 ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng C3, tr\u00e1nh chloride; 316L l\u00e0 \u201cng\u01b0\u1ee1ng v\u00e0o\u201d cho ven bi\u1ec3n; duplex 2205 d\u00e0nh cho b\u1eafn t\u00f3e \u2013 s\u01b0\u01a1ng mu\u1ed1i n\u1eb7ng, t\u1ea3i tr\u1ecdng cao; m\u00e1c si\u00eau h\u1ee3p kim cho chloride n\u00f3ng \u0111\u1eb7c th\u00f9.
\n– Quy\u1ebft \u0111\u1ecbnh \u0111\u00fang d\u1ef1a tr\u00ean \u0111\u00e1nh gi\u00e1 m\u00f4i tr\u01b0\u1eddng, LCC, ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf v\u00e0 quy \u0111\u1ecbnh thi c\u00f4ng \u2013 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t.<\/p>\n

C\u1ea7n h\u1ed7 tr\u1ee3 ch\u1ecdn m\u00e1c, t\u00ednh LCC v\u00e0 gi\u1ea3i ph\u00e1p k\u1ebft c\u1ea5u c\u1ee5 th\u1ec3 cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t. Hotline: 0343.417.281. Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o:
\n– EN 1993-1-4: Eurocode 3 \u2013 Design of steel structures \u2013 Supplementary rules for stainless steels (CEN).
\n– AISC 370-22: Specification for Structural Stainless Steel (AISC).
\n– Nickel Institute: Stainless Steel for Structural Applications; Guidelines for Selection (nickelinstitute.org).
\n– IMOA\/Euro Inox: Stainless steels in architecture, building and construction; Stainless Steel in Fire (imoa.info, euro-inox.org).
\n– ISO 9223: Corrosion of metals and alloys \u2013 Corrosivity of atmospheres.
\n– British Stainless Steel Association (bssa.org.uk) \u2013 datasheets m\u00e1c th\u00e9p v\u00e0 h\u01b0\u1edbng d\u1eabn gia c\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

X\u00e1c \u0111\u1ecbnh khi n\u00e0o inox l\u00e0 v\u1eadt li\u1ec7u k\u1ebft c\u1ea5u b\u1eaft bu\u1ed9c: m\u00f4i tr\u01b0\u1eddng \u0103n m\u00f2n, tu\u1ed5i th\u1ecd, chi ph\u00ed v\u00f2ng \u0111\u1eddi, ph\u00f2ng ch\u00e1y, m\u00e1c th\u00e9p ph\u00f9 h\u1ee3p cho c\u00f4ng tr\u00ecnh Vi\u1ec7t Nam.<\/p>\n","protected":false},"author":7,"featured_media":1059,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1715","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\/1715","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=1715"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1715\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1059"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}