{"id":1672,"date":"2026-02-14T00:35:07","date_gmt":"2026-02-13T17:35:07","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/cach-tinh-ap-luc-lam-viec-va-do-day-ong-inox-theo-chuan-asme\/"},"modified":"2026-02-14T00:35:07","modified_gmt":"2026-02-13T17:35:07","slug":"cach-tinh-ap-luc-lam-viec-va-do-day-ong-inox-theo-chuan-asme","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/cach-tinh-ap-luc-lam-viec-va-do-day-ong-inox-theo-chuan-asme\/","title":{"rendered":"C\u00e1ch t\u00ednh \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c v\u00e0 \u0111\u1ed9 d\u00e0y \u1ed1ng Inox theo chu\u1ea9n ASME"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-thuat-ngu-cot-loi-can-nam\">Thu\u1eadt ng\u1eef c\u1ed1t l\u00f5i c\u1ea7n n\u1eafm<\/a><\/li>\n<li><a href=\"#toc-1-cong-thuc-tinh-theo-tieu-chuan\">C\u00f4ng th\u1ee9c t\u00ednh theo ti\u00eau chu\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-2-quy-trinh-7-buoc-thiet-ke-nhanh-theo-thong-le-asme\">Quy tr\u00ecnh 7 b\u01b0\u1edbc thi\u1ebft k\u1ebf nhanh (theo th\u00f4ng l\u1ec7 ASME\/EN)<\/a><\/li>\n<li><a href=\"#toc-3-vi-du-tinh-toan-thuc-te\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-4-lua-chon-schedule-va-kich-thuoc-goi-y-thuc-hanh\">L\u1ef1a ch\u1ecdn Schedule v\u00e0 k\u00edch th\u01b0\u1edbc \u2013 g\u1ee3i \u00fd th\u1ef1c h\u00e0nh<\/a><\/li>\n<li><a href=\"#toc-5-cac-luu-y-ky-thuat-quan-trong\">C\u00e1c l\u01b0u \u00fd k\u1ef9 thu\u1eadt quan tr\u1ecdng<\/a><\/li>\n<li><a href=\"#toc-6-checklist-nhanh-truoc-khi-chot-do-day-ong-inox\">Checklist nhanh tr\u01b0\u1edbc khi ch\u1ed1t \u0111\u1ed9 d\u00e0y \u1ed1ng Inox<\/a><\/li>\n<li><a href=\"#toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Thi\u1ebft k\u1ebf \u1ed1ng Inox ch\u1ecbu \u00e1p l\u1ef1c \u0111\u00f2i h\u1ecfi x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c (working pressure) v\u00e0 \u0111\u1ed9 d\u00e0y th\u00e0nh \u1ed1ng theo ti\u00eau chu\u1ea9n. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y tr\u1ecdn v\u1eb9n c\u00f4ng th\u1ee9c, quy tr\u00ecnh v\u00e0 v\u00ed d\u1ee5 t\u00ednh to\u00e1n theo th\u00f4ng l\u1ec7 ASME\/EN cho \u1ed1ng Inox (304\/304L\/316\/316L) d\u00f9ng trong h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p. Ch\u1ee7 \u0111\u1ec1 l\u00e0 m\u1ed9t m\u1ea3nh gh\u00e9p quan tr\u1ecdng trong c\u1ea9m nang \u1ed0ng &#038; H\u1ed9p Inox, nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ed9c l\u1eadp v\u00e0 t\u1eadp trung v\u00e0o c\u00e1ch t\u00ednh to\u00e1n chu\u1ea9n.<\/p>\n<h2 id=\"toc-0-thuat-ngu-cot-loi-can-nam\">Thu\u1eadt ng\u1eef c\u1ed1t l\u00f5i c\u1ea7n n\u1eafm<\/h2>\n<p>&#8211; \u00c1p l\u1ef1c l\u00e0m vi\u1ec7c (Working Pressure): \u00e1p l\u1ef1c v\u1eadn h\u00e0nh b\u00ecnh th\u01b0\u1eddng c\u1ee7a h\u1ec7 th\u1ed1ng.<br \/>\n&#8211; \u00c1p l\u1ef1c\/\u00e1p su\u1ea5t thi\u1ebft k\u1ebf (Design Pressure, P): \u2265 \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c c\u00f3 t\u00ednh \u0111\u1ebfn d\u1ef1 ph\u00f2ng (th\u01b0\u1eddng +10\u201325% ho\u1eb7c theo y\u00eau c\u1ea7u d\u1ef1 \u00e1n).<br \/>\n&#8211; Nhi\u1ec7t \u0111\u1ed9 thi\u1ebft k\u1ebf (Design Temperature): nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t d\u1ef1 ki\u1ebfn trong v\u1eadn h\u00e0nh.<br \/>\n&#8211; \u1ee8ng su\u1ea5t cho ph\u00e9p (Allowable Stress, S): gi\u00e1 tr\u1ecb theo v\u1eadt li\u1ec7u v\u00e0 nhi\u1ec7t \u0111\u1ed9 do ti\u00eau chu\u1ea9n c\u00f4ng b\u1ed1 (MPa).<br \/>\n&#8211; Hi\u1ec7u su\u1ea5t m\u1ed1i h\u00e0n d\u1ecdc (Weld Joint Efficiency, E): 1.0 cho \u1ed1ng \u0111\u00fac\/\u1ed1ng h\u00e0n ki\u1ec3m tra 100%; 0.85\u20130.95 cho \u1ed1ng h\u00e0n t\u00f9y m\u1ee9c ki\u1ec3m tra kh\u00f4ng ph\u00e1 h\u1ee7y.<br \/>\n&#8211; H\u1ec7 s\u1ed1 y (y): h\u1ec7 s\u1ed1 v\u1eadt li\u1ec7u trong c\u00f4ng th\u1ee9c ASME B31.3 (th\u00e9p kh\u00f4ng g\u1ec9 austenitic th\u01b0\u1eddng y = 0.4 \u1edf v\u00f9ng nhi\u1ec7t \u0111\u1ed9 th\u00f4ng d\u1ee5ng).<br \/>\n&#8211; Dung sai c\u00e1n (Mill Tolerance): v\u1edbi \u1ed1ng Inox theo ASTM A312 th\u01b0\u1eddng -12.5% chi\u1ec1u d\u00e0y danh ngh\u0129a.<br \/>\n&#8211; B\u1ed5 sung \u0103n m\u00f2n (Corrosion Allowance, CA): th\u01b0\u1eddng 0\u20130.5 mm cho m\u00f4i tr\u01b0\u1eddng s\u1ea1ch v\u1edbi Inox; t\u0103ng h\u01a1n cho m\u00f4i tr\u01b0\u1eddng x\u00e2m th\u1ef1c.<\/p>\n<h2 id=\"toc-1-cong-thuc-tinh-theo-tieu-chuan\">C\u00f4ng th\u1ee9c t\u00ednh theo ti\u00eau chu\u1ea9n<\/h2>\n<h3>1) C\u00f4ng th\u1ee9c Barlow (x\u1ea5p x\u1ec9 th\u00e0nh m\u1ecfng)<\/h3>\n<p>&#8211; \u00c1p l\u1ef1c thi\u1ebft k\u1ebf t\u1ed1i \u0111a: P \u2248 2 S E t \/ D<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y y\u00eau c\u1ea7u: t \u2248 P D \/ (2 S E)<br \/>\n\u00c1p d\u1ee5ng khi t\/D nh\u1ecf (th\u00e0nh m\u1ecfng), d\u00f9ng cho \u01b0\u1edbc t\u00ednh nhanh. Kh\u00f4ng bao g\u1ed3m y, CA v\u00e0 dung sai c\u00e1n.<\/p>\n<h3>2) ASME B31.3 \u2013 \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u \u0111o\u1ea1n \u1ed1ng th\u1eb3ng<\/h3>\n<p>&#8211; \u0110\u1ed9 d\u00e0y t\u00ednh to\u00e1n (kh\u00f4ng g\u1ed3m CA): t_m = (P D) \/ (2 (S E + P y))<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y y\u00eau c\u1ea7u c\u00f3 CA: t_req = t_m + CA<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y danh ngh\u0129a c\u1ea7n ch\u1ecdn: t_nom \u2265 t_req \/ (1 \u2212 mill_tolerance)<br \/>\nV\u1edbi mill_tolerance = 12.5% \u2192 chia cho 0.875.<\/p>\n<h3>3) T\u00ednh \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c\/MAWP t\u1eeb chi\u1ec1u d\u00e0y th\u1ef1c<\/h3>\n<p>Khi \u0111\u00e3 ch\u1ecdn t_nom (bi\u1ebft dung sai v\u00e0 CA), t\u00ednh \u00e1p l\u1ef1c cho ph\u00e9p t\u1ea1i nhi\u1ec7t \u0111\u1ed9 thi\u1ebft k\u1ebf:<br \/>\n&#8211; t_avail = (t_nom \u00d7 0.875) \u2212 CA<br \/>\n&#8211; P_allow = 2 S E t_avail \/ (D \u2212 2 y t_avail)<br \/>\nSo s\u00e1nh P_allow \u2265 P (thi\u1ebft k\u1ebf). P_work n\u00ean th\u1ea5p h\u01a1n ho\u1eb7c b\u1eb1ng P_allow\/ h\u1ec7 s\u1ed1 an to\u00e0n n\u1ed9i b\u1ed9 n\u1ebfu c\u00f3.<\/p>\n<h2 id=\"toc-2-quy-trinh-7-buoc-thiet-ke-nhanh-theo-thong-le-asme\">Quy tr\u00ecnh 7 b\u01b0\u1edbc thi\u1ebft k\u1ebf nhanh (theo th\u00f4ng l\u1ec7 ASME\/EN)<\/h2>\n<p>1) X\u00e1c \u0111\u1ecbnh \u0111i\u1ec1u ki\u1ec7n thi\u1ebft k\u1ebf: P (\u2265 Working Pressure), T (cao nh\u1ea5t), m\u00f4i ch\u1ea5t, chu k\u1ef3 nhi\u1ec7t\/\u00e1p.<br \/>\n2) Ch\u1ecdn v\u1eadt li\u1ec7u Inox (304\/304L\/316\/316L\/321\u2026) v\u00e0 tra S(T) theo ti\u00eau chu\u1ea9n m\u1edbi nh\u1ea5t.<br \/>\n3) Ch\u1ecdn E (hi\u1ec7u su\u1ea5t m\u1ed1i h\u00e0n), y v\u00e0 CA ph\u00f9 h\u1ee3p; x\u00e1c nh\u1eadn chu\u1ea9n k\u00edch th\u01b0\u1edbc (ASME B36.19M, ISO 1127).<br \/>\n4) T\u00ednh t_m theo ASME B31.3; c\u1ed9ng CA \u2192 t_req.<br \/>\n5) T\u00ednh t_nom y\u00eau c\u1ea7u v\u1edbi dung sai c\u00e1n; ch\u1ecdn c\u1ee1 Schedule\/\u0111\u1ed9 d\u00e0y danh ngh\u0129a g\u1ea7n nh\u1ea5t nh\u01b0ng kh\u00f4ng nh\u1ecf h\u01a1n.<br \/>\n6) Ki\u1ec3m tra ng\u01b0\u1ee3c P_allow \u1edf nhi\u1ec7t \u0111\u1ed9 thi\u1ebft k\u1ebf v\u1edbi t_avail (\u0111\u00e3 tr\u1eeb dung sai v\u00e0 CA).<br \/>\n7) R\u00e0 so\u00e1t c\u00e1c r\u00e0ng bu\u1ed9c kh\u00e1c: t\u1ed1i thi\u1ec3u c\u01a1 kh\u00ed\/va \u0111\u1eadp, t\u1ea3i tr\u1ecdng g\u1ed1i \u0111\u1ee1, gi\u00e3n n\u1edf nhi\u1ec7t, \u0103n m\u00f2n c\u1ee5c b\u1ed9, ren\/groove, ch\u00e2n kh\u00f4ng (\u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi \u00e1p su\u1ea5t ngo\u00e0i), th\u1eed \u00e1p l\u1ef1c.<\/p>\n<h2 id=\"toc-3-vi-du-tinh-toan-thuc-te\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n th\u1ef1c t\u1ebf<\/h2>\n<p>Gi\u1ea3 \u0111\u1ecbnh c\u00e1c gi\u00e1 tr\u1ecb S d\u01b0\u1edbi \u0111\u00e2y ch\u1ec9 ph\u1ee5c v\u1ee5 minh h\u1ecda. Khi thi\u1ebft k\u1ebf, lu\u00f4n tra S(T) theo \u1ea5n b\u1ea3n hi\u1ec7n h\u00e0nh c\u1ee7a ti\u00eau chu\u1ea9n.<\/p>\n<h3>V\u00ed d\u1ee5 A \u2013 Ch\u1ecdn \u0111\u1ed9 d\u00e0y cho \u1ed1ng Inox DN50 (NPS 2&#8243;)<\/h3>\n<p>&#8211; \u1ed0ng: Inox 304L, OD D = 60.3 mm (ASME B36.19M)<br \/>\n&#8211; P_work = 10 bar \u2192 P (thi\u1ebft k\u1ebf) = 12 bar = 1.2 MPa<br \/>\n&#8211; T (thi\u1ebft k\u1ebf) = 80\u00b0C; l\u1ea5y S = 120 MPa (gi\u1ea3 \u0111\u1ecbnh minh h\u1ecda)<br \/>\n&#8211; E = 1.0 (\u1ed1ng \u0111\u00fac\/\u1ed1ng h\u00e0n ki\u1ec3m tra 100%); y = 0.4; CA = 0 mm (n\u01b0\u1edbc s\u1ea1ch); dung sai c\u00e1n 12.5%<\/p>\n<p>T\u00ednh t_m:<br \/>\nt_m = (P D) \/ (2 (S E + P y)) = (1.2 \u00d7 60.3) \/ (2 (120 \u00d7 1 + 1.2 \u00d7 0.4))<br \/>\n= 72.36 \/ (2 \u00d7 (120 + 0.48)) = 72.36 \/ 240.96 = 0.300 mm<\/p>\n<p>t_req = t_m + CA = 0.300 mm<br \/>\nt_nom \u2265 t_req \/ 0.875 = 0.343 mm<\/p>\n<p>K\u1ebft lu\u1eadn t\u00ednh to\u00e1n: y\u00eau c\u1ea7u ch\u1ecbu \u00e1p l\u1ef1c r\u1ea5t nh\u1ecf. Tuy nhi\u00ean, v\u00ec y\u00eau c\u1ea7u c\u01a1 kh\u00ed, ch\u1ebf t\u1ea1o v\u00e0 ti\u00eau chu\u1ea9n th\u01b0\u01a1ng m\u1ea1i, th\u1ef1c t\u1ebf t\u1ed1i thi\u1ec3u n\u00ean ch\u1ecdn Sch 5S ho\u1eb7c 10S:<br \/>\n&#8211; Sch 10S (2&#8243;): t_nom = 2.77 mm (ph\u1ed5 bi\u1ebfn c\u00f4ng nghi\u1ec7p), d\u01b0 \u00e1p l\u1ef1c r\u1ea5t l\u1edbn, d\u1ec5 gia c\u00f4ng v\u00e0 b\u1ec1n va \u0111\u1eadp.<\/p>\n<p>Ki\u1ec3m tra P_allow v\u1edbi Sch 10S:<br \/>\nt_avail = 2.77 \u00d7 0.875 \u2212 0 = 2.42 mm<br \/>\nP_allow = 2 \u00d7 120 \u00d7 1.0 \u00d7 2.42 \/ (60.3 \u2212 2 \u00d7 0.4 \u00d7 2.42)<br \/>\n= 580.8 \/ (60.3 \u2212 1.936) = 580.8 \/ 58.364 = 9.95 MPa \u2248 99.5 bar<\/p>\n<p>D\u01b0 \u0111\u1ecba an to\u00e0n r\u1ea5t l\u1edbn so v\u1edbi P_work = 10 bar.<\/p>\n<h3>V\u00ed d\u1ee5 B \u2013 T\u00ednh \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c cho \u1ed1ng NPS 3&#8243; \u0111\u00e3 ch\u1ecdn<\/h3>\n<p>&#8211; \u1ed0ng: Inox 316L, OD D = 88.9 mm, Sch 10S (t_nom = 3.05 mm)<br \/>\n&#8211; T = 100\u00b0C; l\u1ea5y S = 120 MPa (minh h\u1ecda); E = 1.0; y = 0.4; CA = 0 mm<\/p>\n<p>t_avail = 3.05 \u00d7 0.875 = 2.67 mm<br \/>\nP_allow = 2 \u00d7 120 \u00d7 1.0 \u00d7 2.67 \/ (88.9 \u2212 2 \u00d7 0.4 \u00d7 2.67)<br \/>\n= 640.8 \/ (88.9 \u2212 2.136) = 640.8 \/ 86.764 = 7.38 MPa \u2248 73.8 bar<\/p>\n<p>N\u1ebfu d\u00f9ng Sch 40S (t_nom = 5.49 mm):<br \/>\nt_avail = 4.80 mm \u2192 P_allow \u2248 13.6 MPa \u2248 136 bar<\/p>\n<p>Ghi ch\u00fa: N\u1ebfu \u1ed1ng h\u00e0n v\u1edbi E = 0.85, P_allow gi\u1ea3m t\u01b0\u01a1ng \u1ee9ng kho\u1ea3ng 15%.<\/p>\n<h2 id=\"toc-4-lua-chon-schedule-va-kich-thuoc-goi-y-thuc-hanh\">L\u1ef1a ch\u1ecdn Schedule v\u00e0 k\u00edch th\u01b0\u1edbc \u2013 g\u1ee3i \u00fd th\u1ef1c h\u00e0nh<\/h2>\n<p>&#8211; Theo ASME B36.19M (Stainless Steel Pipe), \u0111\u1ed9 d\u00e0y ph\u1ed5 bi\u1ebfn:<br \/>\n  &#8211; NPS 2&#8243;: Sch 10S = 2.77 mm; Sch 40S = 3.91 mm; Sch 80S = 5.54 mm<br \/>\n  &#8211; NPS 3&#8243;: Sch 10S = 3.05 mm; Sch 40S = 5.49 mm; Sch 80S = 7.62 mm<br \/>\n&#8211; V\u1edbi \u00e1p l\u1ef1c th\u1ea5p\u2013trung b\u00ecnh v\u00e0 m\u00f4i ch\u1ea5t s\u1ea1ch: Sch 10S th\u01b0\u1eddng \u0111\u1ee7; ch\u1ecdn Sch 40S khi c\u1ea7n b\u1ec1n c\u01a1 kh\u00ed, va \u0111\u1eadp, ren\/groove, ho\u1eb7c d\u1ef1 ph\u00f2ng \u0103n m\u00f2n.<br \/>\n&#8211; \u1ed0ng theo ASTM A312\/A312M (Seamless\/Welded) th\u01b0\u1eddng c\u00f3 dung sai -12.5% chi\u1ec1u d\u00e0y; lu\u00f4n t\u00ednh \u0111\u1ebfn khi ki\u1ec3m tra P_allow.<br \/>\n&#8211; \u1ed0ng chu\u1ea9n \u201ctube\u201d (ASTM A269\/A270) d\u00f9ng th\u01b0\u1edbc OD\/thickness theo ISO 1127; c\u00f4ng th\u1ee9c ki\u1ec3m tra \u00e1p l\u1ef1c t\u01b0\u01a1ng t\u1ef1, c\u1ea7n \u0111\u00fang OD v\u00e0 t.<\/p>\n<h2 id=\"toc-5-cac-luu-y-ky-thuat-quan-trong\">C\u00e1c l\u01b0u \u00fd k\u1ef9 thu\u1eadt quan tr\u1ecdng<\/h2>\n<p>&#8211; Nhi\u1ec7t \u0111\u1ed9 cao l\u00e0m gi\u1ea3m S: lu\u00f4n tra b\u1ea3ng S(T) ch\u00ednh th\u1ee9c cho \u0111\u00fang m\u00e1c v\u00e0 tr\u1ea1ng th\u00e1i v\u1eadt li\u1ec7u (L\/H, 304 vs 304L, 316 vs 316L).<br \/>\n&#8211; \u0102n m\u00f2n\/\u0103n m\u00f2n k\u1ebd h\u1edf\/cavitation: c\u00e2n nh\u1eafc CA > 0 trong m\u00f4i tr\u01b0\u1eddng clorua, axit\/bazo, n\u01b0\u1edbc bi\u1ec3n, ho\u1eb7c th\u00eam l\u1edbp l\u00f3t.<br \/>\n&#8211; Ch\u00e2n kh\u00f4ng v\u00e0 \u00e1p l\u1ef1c ngo\u00e0i: ki\u1ec3m tra \u1ed5n \u0111\u1ecbnh u\u1ed1n v\u1ecf (ASME BPVC VIII-1, UG-28) khi c\u00f3 \u00e1p ngo\u00e0i\/vacuum.<br \/>\n&#8211; T\u1ea3i tr\u1ecdng ngo\u00e0i: g\u1ed1i \u0111\u1ee1, rung, gi\u00e3n n\u1edf nhi\u1ec7t, t\u1ea3i van\/m\u1eb7t b\u00edch c\u00f3 th\u1ec3 chi ph\u1ed1i \u0111\u1ed9 d\u00e0y t\u1ed1i thi\u1ec3u v\u01b0\u1ee3t y\u00eau c\u1ea7u \u00e1p su\u1ea5t.<br \/>\n&#8211; Gia c\u00f4ng: ren, v\u00e1t m\u00e9p, r\u00e3nh kh\u00f3a l\u00e0m m\u1ecfng th\u00e0nh \u2013 t\u00ednh \u0111\u1ee7 \u201cthickness after machining\u201d.<br \/>\n&#8211; Th\u1eed \u00e1p: theo ASME B31.3, P_test th\u1ee7y l\u1ef1c \u2248 1.5 \u00d7 P_design \u00d7 (S_at_test \/ S_at_design). Ki\u1ec3m tra kh\u1ea3 n\u0103ng thi\u1ebft b\u1ecb ph\u1ee5 tr\u1ee3.<br \/>\n&#8211; H\u1ed9p Inox (vu\u00f4ng\/ch\u1eef nh\u1eadt) kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho d\u1ecbch v\u1ee5 \u00e1p l\u1ef1c trong \u0111\u01b0\u1eddng \u1ed1ng; n\u1ebfu d\u00f9ng cho jacket\/h\u1ed9p \u00e1p l\u1ef1c, c\u1ea7n thi\u1ebft k\u1ebf theo l\u00fd thuy\u1ebft b\u1ea3n v\u00e0 b\u00ecnh ch\u1ecbu \u00e1p t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<h2 id=\"toc-6-checklist-nhanh-truoc-khi-chot-do-day-ong-inox\">Checklist nhanh tr\u01b0\u1edbc khi ch\u1ed1t \u0111\u1ed9 d\u00e0y \u1ed1ng Inox<\/h2>\n<p>&#8211; [ ] X\u00e1c nh\u1eadn P, T thi\u1ebft k\u1ebf v\u00e0 h\u1ec7 s\u1ed1 d\u1ef1 ph\u00f2ng n\u1ed9i b\u1ed9<br \/>\n&#8211; [ ] Tra S(T) ch\u00ednh x\u00e1c t\u1eeb ti\u00eau chu\u1ea9n hi\u1ec7n h\u00e0nh<br \/>\n&#8211; [ ] Ch\u1ecdn E, y theo lo\u1ea1i \u1ed1ng v\u00e0 ki\u1ec3m tra NDT<br \/>\n&#8211; [ ] Quy\u1ebft \u0111\u1ecbnh CA (\u2265 0 n\u1ebfu m\u00f4i tr\u01b0\u1eddng x\u00e2m th\u1ef1c)<br \/>\n&#8211; [ ] T\u00ednh t_m, t_req, t_nom; ch\u1ecdn Schedule th\u01b0\u01a1ng m\u1ea1i<br \/>\n&#8211; [ ] Ki\u1ec3m tra P_allow \u2265 P; \u0111\u00e1nh gi\u00e1 t\u1ea3i ngo\u00e0i v\u00e0 y\u00eau c\u1ea7u c\u01a1 kh\u00ed<br \/>\n&#8211; [ ] X\u00e1c nh\u1eadn th\u1eed \u00e1p l\u1ef1c v\u00e0 l\u1eafp \u0111\u1eb7t<\/p>\n<h2 id=\"toc-7-nguon-tham-khao-chinh\">Ngu\u1ed3n tham kh\u1ea3o ch\u00ednh<\/h2>\n<p>&#8211; ASME B31.3 \u2013 Process Piping (c\u00f4ng th\u1ee9c t = P D \/ [2 (S E + P y)], h\u1ec7 s\u1ed1 y, E, y\u00eau c\u1ea7u th\u1eed \u00e1p)<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe (k\u00edch th\u01b0\u1edbc OD v\u00e0 Schedule cho \u1ed1ng Inox)<br \/>\n&#8211; ASTM A312\/A312M \u2013 Seamless, Welded Austenitic Stainless Steel Pipes (dung sai chi\u1ec1u d\u00e0y, m\u00e1c v\u1eadt li\u1ec7u)<br \/>\n&#8211; EN 13480-3 \u2013 Metallic Industrial Piping, Part 3: Design and calculation (c\u00f4ng th\u1ee9c thi\u1ebft k\u1ebf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng d\u00f9ng h\u1ec7 s\u1ed1 ri\u00eang)<br \/>\n&#8211; ASME BPVC Section II, Part D \u2013 Properties (Allowable Stresses) for Materials (b\u1ea3ng S theo nhi\u1ec7t \u0111\u1ed9 cho t\u1eebng v\u1eadt li\u1ec7u)<br \/>\n&#8211; ISO 1127 \u2013 Stainless steel tubes (k\u00edch th\u01b0\u1edbc v\u00e0 dung sai cho \u201ctube\u201d)<\/p>\n<p>K\u1ebft lu\u1eadn<br \/>\n&#8211; T\u00ednh \u0111\u1ed9 d\u00e0y \u1ed1ng Inox v\u00e0 \u00e1p l\u1ef1c l\u00e0m vi\u1ec7c n\u00ean tu\u00e2n theo c\u00f4ng th\u1ee9c v\u00e0 quy tr\u00ecnh c\u1ee7a ASME B31.3 ho\u1eb7c EN 13480, c\u00f3 x\u00e9t \u0111\u1ebfn S(T), E, y, CA v\u00e0 dung sai c\u00e1n.<br \/>\n&#8211; D\u00f9ng B31.3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t_req, ch\u1ecdn Schedule theo B36.19M, r\u1ed3i ki\u1ec3m tra ng\u01b0\u1ee3c P_allow.<br \/>\n&#8211; V\u00ed d\u1ee5 th\u1ef1c t\u1ebf cho th\u1ea5y Sch 10S\/40S th\u01b0\u1eddng d\u01b0 \u00e1p l\u1edbn cho \u00e1p l\u1ef1c c\u00f4ng nghi\u1ec7p ph\u1ed5 bi\u1ebfn; l\u1ef1a ch\u1ecdn cu\u1ed1i c\u00f9ng c\u1ea7n x\u00e9t th\u00eam t\u1ea3i ngo\u00e0i, \u0103n m\u00f2n, gia c\u00f4ng v\u00e0 th\u1eed \u00e1p.<br \/>\n&#8211; C\u1ea7n s\u1ed1 li\u1ec7u S(T) c\u1eadp nh\u1eadt t\u1eeb \u1ea5n b\u1ea3n ti\u00eau chu\u1ea9n m\u1edbi nh\u1ea5t cho m\u00e1c Inox c\u1ee5 th\u1ec3.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c v\u00e0 Schedule t\u1ed1i \u01b0u cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n chi ti\u1ebft v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t.<br \/>\nHotline: 0343.417.281<br \/>\nEmail: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn chu\u1ea9n: c\u00f4ng th\u1ee9c Barlow &#038; ASME B31.3, 7 b\u01b0\u1edbc t\u00ednh \u0111\u1ed9 d\u00e0y v\u00e0 \u00e1p su\u1ea5t \u1ed1ng Inox 304\/316, v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, ch\u1ecdn Schedule theo B36.19M.<\/p>\n","protected":false},"author":7,"featured_media":1035,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1672","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\/1672","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=1672"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1672\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1035"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}