{"id":1927,"date":"2026-04-20T12:34:29","date_gmt":"2026-04-20T05:34:29","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/tinh-khoi-luong-vat-tu-inox-chinh-xac-cong-thuc-he-so-vi-du-checklist\/"},"modified":"2026-04-20T12:34:29","modified_gmt":"2026-04-20T05:34:29","slug":"tinh-khoi-luong-vat-tu-inox-chinh-xac-cong-thuc-he-so-vi-du-checklist","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/tinh-khoi-luong-vat-tu-inox-chinh-xac-cong-thuc-he-so-vi-du-checklist\/","title":{"rendered":"T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox ch\u00ednh x\u00e1c: c\u00f4ng th\u1ee9c, h\u1ec7 s\u1ed1, v\u00ed d\u1ee5, checklist"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-nguyen-tac-chung-va-du-lieu-dau-vao-bat-buoc\">Nguy\u00ean t\u1eafc chung v\u00e0 d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o b\u1eaft bu\u1ed9c<\/a><\/li>\n<li><a href=\"#toc-1-cong-thuc-tinh-khoi-luong-theo-tung-dang-san-pham\">C\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng theo t\u1eebng d\u1ea1ng s\u1ea3n ph\u1ea9m<\/a><\/li>\n<li><a href=\"#toc-2-vi-du-tinh-toan-day-du-lan-can-inox-304-dai-50-m-c\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n \u0111\u1ea7y \u0111\u1ee7: Lan can Inox 304 d\u00e0i 50 m cho nh\u00e0 x\u01b0\u1edfng<\/a><\/li>\n<li><a href=\"#toc-3-he-so-hao-hut-khuyen-nghi-theo-cong-doan\">H\u1ec7 s\u1ed1 hao h\u1ee5t khuy\u1ebfn ngh\u1ecb theo c\u00f4ng \u0111o\u1ea1n<\/a><\/li>\n<li><a href=\"#toc-4-chuyen-doi-danh-nghia-sang-kich-thuoc-thuc-te-ong-\">Chuy\u1ec3n \u0111\u1ed5i danh ngh\u0129a sang k\u00edch th\u01b0\u1edbc th\u1ef1c t\u1ebf (\u1ed1ng Schedule, dung sai t\u1ea5m)<\/a><\/li>\n<li><a href=\"#toc-5-cach-uoc-tinh-nhanh-bang-excel-goi-y-cong-thuc\">C\u00e1ch \u01b0\u1edbc t\u00ednh nhanh b\u1eb1ng Excel (g\u1ee3i \u00fd c\u00f4ng th\u1ee9c)<\/a><\/li>\n<li><a href=\"#toc-6-checklist-du-lieu-truoc-khi-dat-hang\">Checklist d\u1eef li\u1ec7u tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng<\/a><\/li>\n<li><a href=\"#toc-7-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Trong m\u1ecdi d\u1ef1 \u00e1n c\u01a1 kh\u00ed \u2013 k\u1ebft c\u1ea5u \u2013 \u0111\u01b0\u1eddng \u1ed1ng, t\u00ednh \u0111\u00fang kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox ngay t\u1eeb \u0111\u1ea7u quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn chi ph\u00ed, ti\u1ebfn \u0111\u1ed9 v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng. B\u00e0i vi\u1ebft n\u00e0y l\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n t\u1ef1 t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng theo b\u1ea3n v\u1ebd, chu\u1ea9n h\u00f3a h\u1ec7 s\u1ed1 hao h\u1ee5t, quy \u0111\u1ed5i k\u00edch th\u01b0\u1edbc danh ngh\u0129a sang k\u00edch th\u01b0\u1edbc th\u1ef1c, k\u00e8m v\u00ed d\u1ee5 t\u00ednh to\u00e1n chi ti\u1ebft v\u00e0 checklist \u0111\u1eb7t h\u00e0ng. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong \u201cC\u1ea9m nang Mua h\u00e0ng Inox d\u00e0nh cho Doanh nghi\u1ec7p, \u0110\u1ea1i l\u00fd v\u00e0 K\u1ef9 s\u01b0\u201d, nh\u01b0ng c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ed9c l\u1eadp cho m\u1ecdi h\u1ea1ng m\u1ee5c.<\/p>\n<h2 id=\"toc-0-nguyen-tac-chung-va-du-lieu-dau-vao-bat-buoc\">Nguy\u00ean t\u1eafc chung v\u00e0 d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o b\u1eaft bu\u1ed9c<\/h2>\n<p>&#8211; B\u1ea3n v\u1ebd\/bill of materials (BOM): x\u00e1c \u0111\u1ecbnh \u0111\u00fang d\u1ea1ng s\u1ea3n ph\u1ea9m (t\u1ea5m\/coil, \u1ed1ng tr\u00f2n, \u1ed1ng h\u1ed9p, la, V, U, thanh tr\u00f2n\u2026), k\u00edch th\u01b0\u1edbc danh ngh\u0129a, chi\u1ec1u d\u00e0i t\u1ed5ng, b\u00e1n k\u00ednh u\u1ed1n, m\u1ed1i h\u00e0n, ph\u1ee5 ki\u1ec7n.<br \/>\n&#8211; M\u00e1c Inox v\u00e0 ti\u00eau chu\u1ea9n: v\u00ed d\u1ee5 201\/304\/316L theo ASTM\/JIS\/EN (ASTM A240 cho t\u1ea5m\/plate, ASTM A312 ho\u1eb7c ASTM A554 cho \u1ed1ng, ASME B36.19M\/ISO 1127 cho k\u00edch th\u01b0\u1edbc \u1ed1ng).<br \/>\n&#8211; M\u1eadt \u0111\u1ed9 (\u03c1) theo m\u00e1c th\u00e9p kh\u00f4ng g\u1ec9:<br \/>\n  + 201: ~7.85 g\/cm3 (7850 kg\/m3)<br \/>\n  + 304\/304L: ~7.93 g\/cm3 (7930 kg\/m3)<br \/>\n  + 316\/316L: ~7.98 g\/cm3 (7980 kg\/m3)<br \/>\n&#8211; Dung sai k\u00edch th\u01b0\u1edbc: tu\u00e2n theo ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u (v\u00ed d\u1ee5 ASTM A480\/A480M cho t\u1ea5m; ASME B36.19M cho \u1ed1ng INOX size chu\u1ea9n). Dung sai \u1ea3nh h\u01b0\u1edfng nh\u1ecf \u0111\u1ebfn kh\u1ed1i l\u01b0\u1ee3ng nh\u01b0ng quan tr\u1ecdng khi t\u1ed1i \u01b0u c\u1eaft.<br \/>\n&#8211; Quy c\u00e1ch c\u00e2y\/t\u1ea5m ti\u00eau chu\u1ea9n \u0111\u1ec3 quy \u0111\u1ed5i s\u1ed1 l\u01b0\u1ee3ng:<br \/>\n  + T\u1ea5m: 1219\u00d72438 (4\u00d78 ft), 1500\u00d73000, 2000\u00d74000 mm; coil r\u1ed9ng 1000\/1219\/1500 mm.<br \/>\n  + \u1ed0ng, la, thanh: th\u01b0\u1eddng 6 m\/c\u00e2y.<br \/>\n&#8211; H\u1ec7 s\u1ed1 hao h\u1ee5t theo c\u00f4ng \u0111o\u1ea1n (\u0111\u1eb7t k\u1ebf ho\u1ea1ch t\u1eeb \u0111\u1ea7u): c\u1eaft 2\u20135%, u\u1ed1n 1\u20132%, h\u00e0n &#038; m\u00e0i 1\u20132%, l\u1eafp d\u1ef1ng\/hao v\u1eb7t 0.5\u20131%. V\u1edbi nesting t\u1ea5m ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 5\u20138%.<\/p>\n<h2 id=\"toc-1-cong-thuc-tinh-khoi-luong-theo-tung-dang-san-pham\">C\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng theo t\u1eebng d\u1ea1ng s\u1ea3n ph\u1ea9m<\/h2>\n<p>Nguy\u00ean t\u1eafc n\u1ec1n t\u1ea3ng: Kh\u1ed1i l\u01b0\u1ee3ng = Th\u1ec3 t\u00edch \u00d7 M\u1eadt \u0111\u1ed9.<\/p>\n<p>\u0110\u1ed5i \u0111\u01a1n v\u1ecb an to\u00e0n khi t\u00ednh:<br \/>\n&#8211; mm \u2192 m: chia 1000<br \/>\n&#8211; mm2 \u2192 m2: chia 1,000,000<br \/>\n&#8211; mm3 \u2192 m3: chia 1,000,000,000<\/p>\n<h3>T\u1ea5m\/plate\/coil<\/h3>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng (kg) = Chi\u1ec1u d\u00e0y (mm) \u00d7 Di\u1ec7n t\u00edch (m2) \u00d7 \u03c1 (kg\/m3) \u00f7 1000<br \/>\n&#8211; Quy \u0111\u1ed5i nhanh cho 304: 1.0 mm \u2248 7.93 kg\/m2; 2.0 mm \u2248 15.86 kg\/m2; 5.0 mm \u2248 39.65 kg\/m2.<br \/>\n&#8211; V\u00ed d\u1ee5: T\u1ea5m 304 d\u00e0y 3.0 mm, k\u00edch th\u01b0\u1edbc 1219\u00d72438 mm (2.973 m2) \u2192 Kh\u1ed1i l\u01b0\u1ee3ng \u2248 3 \u00d7 7.93 \u00d7 2.973 = 70.8 kg.<\/p>\n<h3>\u1ed0ng tr\u00f2n (h\u00e0n\/\u0111\u00fac)<\/h3>\n<p>&#8211; C\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c (OD v\u00e0 t t\u00ednh b\u1eb1ng mm, \u03c1 theo kg\/m3):<br \/>\n  + Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (kg\/m) = \u03c0 \u00d7 \u03c1 \u00d7 (OD \u00d7 t \u2212 t2) \u00d7 10\u22126<br \/>\n  + V\u1edbi 304 (\u03c1=7930): h\u1ec7 s\u1ed1 nhanh \u2248 0.02491 \u2192 kg\/m = 0.02491 \u00d7 t \u00d7 (OD \u2212 t)<br \/>\n&#8211; V\u00ed d\u1ee5: \u1ed0ng 304 \u03a638.1\u00d71.5 mm \u2192 kg\/m \u2248 0.02491 \u00d7 1.5 \u00d7 (38.1 \u2212 1.5) = 1.366 kg\/m.<\/p>\n<p>L\u01b0u \u00fd: N\u1ebfu b\u1ea3n v\u1ebd ghi Schedule (Sch10S, Sch40S\u2026), c\u1ea7n tra b\u1ec1 d\u00e0y t\u01b0\u01a1ng \u1ee9ng theo ASME B36.19M\/ASTM A312 r\u1ed3i \u00e1p c\u00f4ng th\u1ee9c tr\u00ean.<\/p>\n<h3>\u1ed0ng h\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt (RHS\/SHS)<\/h3>\n<p>&#8211; Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n (mm2): A = B\u00d7H \u2212 (B \u2212 2t)\u00d7(H \u2212 2t)<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (kg\/m): W = A \u00d7 \u03c1 \u00d7 10\u22126<br \/>\n&#8211; V\u00ed d\u1ee5: H\u1ed9p 304 40\u00d720\u00d71.5 mm \u2192 A = 40\u00d720 \u2212 37\u00d717 = 800 \u2212 629 = 171 mm2 \u2192 W \u2248 171 \u00d7 7930 \u00d7 10\u22126 = 1.356 kg\/m.<\/p>\n<h3>Thanh tr\u00f2n (round bar)<\/h3>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (kg\/m) = (\u03c0\/4) \u00d7 D2 \u00d7 \u03c1 \u00d7 10\u22126<br \/>\n&#8211; V\u1edbi 304: h\u1ec7 s\u1ed1 nhanh \u2248 0.00622 \u2192 kg\/m \u2248 0.00622 \u00d7 D2 (D t\u00ednh mm).<br \/>\n&#8211; V\u00ed d\u1ee5: \u03a612 mm \u2192 0.00622 \u00d7 144 = 0.896 kg\/m.<\/p>\n<h3>Thanh la\/flat bar<\/h3>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (kg\/m) = B (mm) \u00d7 t (mm) \u00d7 \u03c1 \u00d7 10\u22126<br \/>\n&#8211; V\u1edbi 304: B\u00d7t \u00d7 0.00793.<br \/>\n&#8211; V\u00ed d\u1ee5: La 100\u00d75 \u2192 100\u00d75\u00d70.00793 = 3.965 kg\/m.<\/p>\n<h3>G\u00f3c L \u0111\u1ec1u c\u1ea1nh\/kh\u00f4ng \u0111\u1ec1u<\/h3>\n<p>&#8211; Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n (mm2) \u2248 t \u00d7 (b1 + b2 \u2212 t)<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (kg\/m) = A \u00d7 \u03c1 \u00d7 10\u22126<br \/>\n&#8211; V\u00ed d\u1ee5: V 40\u00d740\u00d74 \u2192 A = 4\u00d7(40+40\u22124)=304 mm2 \u2192 W \u2248 304\u00d77930\u00d710\u22126=2.41 kg\/m.<\/p>\n<h3>H\u1eb1ng s\u1ed1 nhanh h\u1eefu d\u1ee5ng<\/h3>\n<p>&#8211; T\u1ea5m 304: 1 mm = 7.93 kg\/m2 (g\u1ea7n \u0111\u00fang 8 kg\/m2 n\u1ebfu c\u1ea7n \u01b0\u1edbc t\u00ednh nhanh).<br \/>\n&#8211; \u1ed0ng tr\u00f2n 304: kg\/m \u2248 0.02491 \u00d7 t \u00d7 (OD \u2212 t).<br \/>\n&#8211; Thanh tr\u00f2n 304: kg\/m \u2248 0.00622 \u00d7 D2.<br \/>\n&#8211; Chuy\u1ec3n m\u00e1c: n\u1ebfu d\u00f9ng 201 (7.85) ho\u1eb7c 316L (7.98), sai l\u1ec7ch kh\u1ed1i l\u01b0\u1ee3ng so v\u1edbi 304 th\u01b0\u1eddng <1%.\n\n\n\n<h2 id=\"toc-2-vi-du-tinh-toan-day-du-lan-can-inox-304-dai-50-m-c\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n \u0111\u1ea7y \u0111\u1ee7: Lan can Inox 304 d\u00e0i 50 m cho nh\u00e0 x\u01b0\u1edfng<\/h2>\n<p>B\u00e0i to\u00e1n: Lan can 2 t\u1ea7ng tay v\u1ecbn. H\u1ea1ng m\u1ee5c g\u1ed3m:<br \/>\n&#8211; 2 \u0111\u01b0\u1eddng tay v\u1ecbn \u1ed1ng \u03a638.1\u00d71.5 mm ch\u1ea1y d\u1ecdc 50 m (t\u1ed5ng 100 m \u1ed1ng).<br \/>\n&#8211; Tr\u1ee5 \u1ed1ng \u03a650.8\u00d71.5 mm, cao 1.1 m, b\u1ed1 tr\u00ed 1.5 m\/tr\u1ee5. Ch\u1ecdn 35 tr\u1ee5 (an to\u00e0n, \u0111\u00e3 l\u00e0m tr\u00f2n).<br \/>\n&#8211; B\u1ea3n \u0111\u1ebf tr\u1ee5: t\u1ea5m 100\u00d7100\u00d75 mm (35 c\u00e1i).<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n co\/elbow, ch\u1ee5p b\u1ecbt, b\u00edch h\u00e0n: \u01b0\u1edbc t\u00ednh 3% kh\u1ed1i l\u01b0\u1ee3ng \u1ed1ng; d\u00e2y h\u00e0n 308L: 1.5% kh\u1ed1i l\u01b0\u1ee3ng kim lo\u1ea1i c\u01a1 b\u1ea3n.<br \/>\n&#8211; H\u1ec7 s\u1ed1 hao h\u1ee5t gia c\u00f4ng t\u1ed5ng: 5% (c\u1eaft + l\u1eafp + m\u00e0i).<\/p>\n<p>B\u01b0\u1edbc 1: T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng danh ngh\u0129a (ch\u01b0a hao h\u1ee5t)<br \/>\n&#8211; \u1ed0ng \u03a638.1\u00d71.5 (304): kg\/m = 0.02491\u00d71.5\u00d7(38.1\u22121.5)=1.366 kg\/m<br \/>\n  + 100 m \u2192 1.366\u00d7100 = 136.6 kg<br \/>\n&#8211; \u1ed0ng \u03a650.8\u00d71.5 (304): kg\/m = 0.02491\u00d71.5\u00d7(50.8\u22121.5)=1.842 kg\/m<br \/>\n  + Chi\u1ec1u d\u00e0i tr\u1ee5: 35\u00d71.1 = 38.5 m \u2192 1.842\u00d738.5 = 70.9 kg<br \/>\n&#8211; B\u1ea3n \u0111\u1ebf 100\u00d7100\u00d75 (304):<br \/>\n  + Th\u1ec3 t\u00edch 1 b\u1ea3n \u0111\u1ebf = 0.1\u00d70.1\u00d70.005 = 0.00005 m3<br \/>\n  + Kh\u1ed1i l\u01b0\u1ee3ng 1 b\u1ea3n \u0111\u1ebf = 0.00005\u00d77930 = 0.3965 kg<br \/>\n  + 35 c\u00e1i \u2192 0.3965\u00d735 = 13.9 kg<br \/>\n&#8211; T\u1ed5ng tr\u01b0\u1edbc ph\u1ee5 ki\u1ec7n: 136.6 + 70.9 + 13.9 = 221.4 kg<\/p>\n<p>B\u01b0\u1edbc 2: T\u00ednh ph\u1ee5 ki\u1ec7n h\u00e0n + d\u00e2y h\u00e0n<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n (co, b\u00edch, ch\u1ee5p): 3% \u00d7 221.4 \u2248 6.6 kg<br \/>\n&#8211; D\u00e2y h\u00e0n 308L: 1.5% \u00d7 (221.4 + 6.6) \u2248 3.4 kg<br \/>\n&#8211; C\u1ed9ng: 221.4 + 6.6 + 3.4 = 231.4 kg<\/p>\n<p>B\u01b0\u1edbc 3: Th\u00eam hao h\u1ee5t gia c\u00f4ng 5%<br \/>\n&#8211; 231.4 \u00d7 1.05 \u2248 243.0 kg<br \/>\n\u2192 Kh\u1ed1i l\u01b0\u1ee3ng mua d\u1ef1 ki\u1ebfn: kho\u1ea3ng 243 kg Inox 304 cho h\u1ea1ng m\u1ee5c lan can.<\/p>\n<p>B\u01b0\u1edbc 4: Quy \u0111\u1ed5i ra s\u1ed1 c\u00e2y\/t\u1ea5m th\u01b0\u01a1ng m\u1ea1i<br \/>\n&#8211; \u1ed0ng \u03a638.1\u00d71.5: Nhu c\u1ea7u chi\u1ec1u d\u00e0i = 100 m \u00d7 1.05 = 105 m<br \/>\n  + Quy c\u00e1ch 6 m\/c\u00e2y \u2192 c\u1ea7n 18 c\u00e2y (108 m)<br \/>\n  + Kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eb7t: 108 \u00d7 1.366 \u2248 147.5 kg<br \/>\n&#8211; \u1ed0ng \u03a650.8\u00d71.5: Nhu c\u1ea7u chi\u1ec1u d\u00e0i = 38.5 m \u00d7 1.05 \u2248 40.4 m<br \/>\n  + Quy c\u00e1ch 6 m\/c\u00e2y \u2192 c\u1ea7n 7 c\u00e2y (42 m)<br \/>\n  + Kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eb7t: 42 \u00d7 1.842 \u2248 77.4 kg<br \/>\n&#8211; La 100\u00d75 \u0111\u1ec3 c\u1eaft b\u1ea3n \u0111\u1ebf: c\u1ea7n 3.5 m (35 t\u1ea5m \u00d7 0.1 m)<br \/>\n  + Mua 1 c\u00e2y 6 m \u2192 6 \u00d7 3.965 \u2248 23.8 kg<br \/>\n&#8211; D\u00e2y h\u00e0n 308L: \u0111\u1eb7t 5 kg\/cu\u1ed9n (d\u1ef1 ph\u00f2ng)<br \/>\n&#8211; T\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng r\u1eddi theo quy c\u00e1ch \u2248 147.5 + 77.4 + 23.8 \u2248 248.7 kg<br \/>\n  (Ch\u00eanh nh\u1eb9 so v\u1edbi 243 kg do l\u00e0m tr\u00f2n theo chi\u1ec1u d\u00e0i c\u00e2y ti\u00eau chu\u1ea9n v\u00e0 c\u00f3 d\u1ef1 ph\u00f2ng th\u1ef1c t\u1ebf \u2192 an to\u00e0n v\u1eadt t\u01b0.)<\/p>\n<p>G\u1ee3i \u00fd t\u1ed1i \u01b0u:<br \/>\n&#8211; N\u1ebfu x\u01b0\u1edfng c\u00f3 m\u00e1y c\u1eaft chu\u1ea9n t\u1ed1i \u01b0u gh\u00e9p \u0111o\u1ea1n 6 m cho tay v\u1ecbn, c\u00f3 th\u1ec3 h\u1ea1 c\u00f2n 17 c\u00e2y \u03a638.1 (102 m) n\u1ebfu b\u1ea3n v\u1ebd cho ph\u00e9p gh\u00e9p n\u1ed1i h\u1ee3p l\u00fd.<br \/>\n&#8211; C\u00f3 th\u1ec3 thay b\u1ea3n \u0111\u1ebf b\u1eb1ng la 120\u00d75 \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch b\u1eaft bul\u00f4ng n\u1ebfu n\u1ec1n y\u1ebfu (kh\u1ed1i l\u01b0\u1ee3ng t\u0103ng t\u01b0\u01a1ng \u1ee9ng).<\/p>\n<h2 id=\"toc-3-he-so-hao-hut-khuyen-nghi-theo-cong-doan\">H\u1ec7 s\u1ed1 hao h\u1ee5t khuy\u1ebfn ngh\u1ecb theo c\u00f4ng \u0111o\u1ea1n<\/h2>\n<p>&#8211; C\u1eaft laser\/plasma: 1\u20132%; c\u1eaft c\u01a1 kh\u00ed (c\u01b0a, m\u00e0i): 2\u20134%<br \/>\n&#8211; U\u1ed1n\/\u0111\u00e1nh b\u00f3ng: 0.5\u20132%<br \/>\n&#8211; H\u00e0n (hao m\u00f2n m\u1ecf\/que\/d\u00e2y, m\u00e0i m\u1ed1i h\u00e0n): 1\u20132%<br \/>\n&#8211; S\u01a1n ph\u1ee7\/film b\u1ea3o v\u1ec7 (PVC film 30\u201360 g\/m2) g\u1ea7n nh\u01b0 b\u1ecf qua trong t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng<br \/>\n&#8211; V\u1eadn chuy\u1ec3n\/l\u01b0u kho: 0.5\u20131%<br \/>\n&#8211; Nesting chi ti\u1ebft tr\u00ean t\u1ea5m ph\u1ee9c t\u1ea1p: x\u00e9t 5\u20138% cho t\u1ed1i \u01b0u layout<\/p>\n<p>Khuy\u1ebfn ngh\u1ecb: t\u00ednh ri\u00eang t\u1eebng h\u1ea1ng m\u1ee5c, c\u1ed9ng d\u1ed3n v\u00e0 l\u00e0m tr\u00f2n theo quy c\u00e1ch th\u01b0\u01a1ng m\u1ea1i \u0111\u1ec3 tr\u00e1nh th\u1eeba thi\u1ebfu c\u1ee5c b\u1ed9.<\/p>\n<h2 id=\"toc-4-chuyen-doi-danh-nghia-sang-kich-thuoc-thuc-te-ong-\">Chuy\u1ec3n \u0111\u1ed5i danh ngh\u0129a sang k\u00edch th\u01b0\u1edbc th\u1ef1c t\u1ebf (\u1ed1ng Schedule, dung sai t\u1ea5m)<\/h2>\n<p>&#8211; \u1ed0ng theo ASME B36.19M (Inox):<br \/>\n  + DN25 (NPS 1&#8243;): OD 33.4 mm; Sch10S t=2.77 mm; Sch40S t=3.38 mm<br \/>\n  + DN50 (NPS 2&#8243;): OD 60.3 mm; Sch10S t=2.77 mm; Sch40S t=3.91 mm<br \/>\n  + DN100 (NPS 4&#8243;): OD 114.3 mm; Sch10S t=3.05 mm; Sch40S t=6.02 mm<br \/>\n  Sau khi x\u00e1c \u0111\u1ecbnh t, d\u00f9ng c\u00f4ng th\u1ee9c \u1ed1ng tr\u00f2n \u0111\u1ec3 t\u00ednh kg\/m.<br \/>\n&#8211; T\u1ea5m theo ASTM A480\/A240: dung sai d\u00e0y ph\u1ee5 thu\u1ed9c d\u1ea3i d\u00e0y v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u00e1n (CR\/HR). V\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh v\u1edbi t\u1ea5m c\u00e1n ngu\u1ed9i 1.5\u20133.0 mm: dung sai \u00b10.06\u20130.08 mm. Dung sai b\u1ec1 r\u1ed9ng\/chi\u1ec1u d\u00e0i \u1ea3nh h\u01b0\u1edfng layout c\u1eaft, \u00edt \u1ea3nh h\u01b0\u1edfng kh\u1ed1i l\u01b0\u1ee3ng t\u1ed5ng.<\/p>\n<h2 id=\"toc-5-cach-uoc-tinh-nhanh-bang-excel-goi-y-cong-thuc\">C\u00e1ch \u01b0\u1edbc t\u00ednh nhanh b\u1eb1ng Excel (g\u1ee3i \u00fd c\u00f4ng th\u1ee9c)<\/h2>\n<p>&#8211; Ch\u1ecdn \u03c1 theo m\u00e1c: \u00f4 Rho = 7930 (304), 7850 (201), 7980 (316L)<br \/>\n&#8211; T\u1ea5m: Kg = Thickness_mm \u00d7 Area_m2 \u00d7 Rho \/ 1000<br \/>\n&#8211; \u1ed0ng tr\u00f2n: Kg_per_m = PI() \u00d7 Rho \u00d7 (OD_mm\u00d7t_mm \u2212 t_mm^2) \/ 1000000<br \/>\n&#8211; \u1ed0ng h\u1ed9p: Kg_per_m = (B_mm\u00d7H_mm \u2212 (B_mm\u22122\u00d7t_mm)\u00d7(H_mm\u22122\u00d7t_mm)) \u00d7 Rho \/ 1000000<br \/>\n&#8211; Thanh tr\u00f2n: Kg_per_m = PI()\/4 \u00d7 D_mm^2 \u00d7 Rho \/ 1000000<br \/>\n&#8211; Thanh la: Kg_per_m = B_mm \u00d7 t_mm \u00d7 Rho \/ 1000000<br \/>\n&#8211; T\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng: SUMPRODUCT(Chi\u1ec1u_d\u00e0i, Kg_per_m) \u00d7 (1 + Hao_hut%)<\/p>\n<h2 id=\"toc-6-checklist-du-lieu-truoc-khi-dat-hang\">Checklist d\u1eef li\u1ec7u tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng<\/h2>\n<p>&#8211; M\u00e1c Inox, ti\u00eau chu\u1ea9n (ASTM\/JIS\/EN), y\u00eau c\u1ea7u MTC (Mill Test Certificate)<br \/>\n&#8211; D\u1ea1ng s\u1ea3n ph\u1ea9m, k\u00edch th\u01b0\u1edbc danh ngh\u0129a, chi\u1ec1u d\u00e0i\/t\u1ea5m chu\u1ea9n<br \/>\n&#8211; B\u1ec1 m\u1eb7t (2B, BA, HL, No.1\u2026), c\u00f3\/kh\u00f4ng film PVC<br \/>\n&#8211; Dung sai ch\u1ea5p nh\u1eadn, y\u00eau c\u1ea7u ki\u1ec3m tra PMI n\u1ebfu c\u1ea7n<br \/>\n&#8211; H\u1ec7 s\u1ed1 hao h\u1ee5t, s\u1ed1 c\u00e2y\/t\u1ea5m t\u1ed1i \u01b0u theo layout c\u1eaft<br \/>\n&#8211; Y\u00eau c\u1ea7u h\u00e0n (quy tr\u00ecnh, v\u1eadt li\u1ec7u 308L\/316L), ph\u1ee5 ki\u1ec7n \u0111\u1ed3ng b\u1ed9<br \/>\n&#8211; \u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng (\u0103n m\u00f2n) \u0111\u1ec3 c\u00e2n nh\u1eafc \u0111\u1ed5i m\u00e1c 201\/304\/316L<br \/>\n&#8211; \u0110\u00f3ng g\u00f3i, giao nh\u1eadn, b\u1ea3o qu\u1ea3n<\/p>\n<h2 id=\"toc-7-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASTM A240\/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip<br \/>\n&#8211; ASTM A480\/A480M: General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip<br \/>\n&#8211; ASTM A312\/A312M: Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes<br \/>\n&#8211; ASTM A554: Welded Stainless Steel Mechanical Tubing<br \/>\n&#8211; ASME B36.19M: Stainless Steel Pipe (k\u00edch th\u01b0\u1edbc OD, Schedule)<br \/>\n&#8211; ISO 1127: Stainless steel tubes \u2014 Dimensions, tolerances and conventional masses per unit length<br \/>\n&#8211; Datasheet m\u1eadt \u0111\u1ed9 v\u00e0 t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u: Outokumpu Stainless Steel Handbook; MatWeb\/ASM datasheets<\/p>\n<h2 id=\"toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>Mu\u1ed1n t\u00ednh \u0111\u00fang kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox, h\u00e3y b\u00e1m 3 b\u01b0\u1edbc: (1) ch\u1ed1t \u0111\u00fang d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o (m\u00e1c, ti\u00eau chu\u1ea9n, k\u00edch th\u01b0\u1edbc\/dung sai); (2) \u00e1p c\u00f4ng th\u1ee9c theo h\u00ecnh d\u1ea1ng v\u1edbi m\u1eadt \u0111\u1ed9 ph\u00f9 h\u1ee3p; (3) c\u1ed9ng ph\u1ee5 ki\u1ec7n v\u00e0 h\u1ec7 s\u1ed1 hao h\u1ee5t, r\u1ed3i quy \u0111\u1ed5i ra c\u00e2y\/t\u1ea5m th\u01b0\u01a1ng m\u1ea1i. C\u00e1c c\u00f4ng th\u1ee9c v\u00e0 h\u1eb1ng s\u1ed1 nhanh trong b\u00e0i \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n t\u1ef1 t\u00ednh h\u1ea7u h\u1ebft tr\u01b0\u1eddng h\u1ee3p th\u1ef1c t\u1ebf, c\u00f2n v\u00ed d\u1ee5 lan can cho th\u1ea5y c\u00e1ch chuy\u1ec3n t\u1eeb b\u1ea3n v\u1ebd sang kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111\u1eb7t h\u00e0ng an to\u00e0n. Khi c\u1ea7n ki\u1ec3m ch\u1ee9ng theo ti\u00eau chu\u1ea9n ho\u1eb7c t\u1ed1i \u01b0u layout c\u1eaft \u0111\u1ec3 gi\u1ea3m hao h\u1ee5t, h\u00e3y tham chi\u1ebfu ASTM\/ASME\/ISO \u0111\u00e3 li\u1ec7t k\u00ea v\u00e0 trao \u0111\u1ed5i v\u1edbi nh\u00e0 cung c\u1ea5p.<\/p>\n<p>C\u1ea7n b\u1ea3ng t\u00ednh m\u1eabu, x\u00e1c minh ti\u00eau chu\u1ea9n ho\u1eb7c b\u00e1o gi\u00e1 nhanh theo b\u1ea3n v\u1ebd? Li\u00ean h\u1ec7 Inox Cuong Thinh \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 \u1ee9ng d\u1ee5ng h\u1ed7 tr\u1ee3 chi ti\u1ebft v\u00e0 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 \u0111\u1ec3 t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng Inox: c\u00f4ng th\u1ee9c theo t\u1eebng d\u1ea1ng (t\u1ea5m, \u1ed1ng, la\u2026), h\u1ec7 s\u1ed1 hao h\u1ee5t, dung sai, v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 m\u1eb9o \u0111\u1eb7t h\u00e0ng ch\u00ednh x\u00e1c.<\/p>\n","protected":false},"author":7,"featured_media":1031,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1927","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\/1927","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=1927"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1927\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1031"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}