{"id":1481,"date":"2025-12-27T12:36:40","date_gmt":"2025-12-27T05:36:40","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/huong-dan-tinh-khoi-luong-vat-tu-inox-chinh-xac-cho-moi-du-an\/"},"modified":"2025-12-27T12:36:40","modified_gmt":"2025-12-27T05:36:40","slug":"huong-dan-tinh-khoi-luong-vat-tu-inox-chinh-xac-cho-moi-du-an","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/huong-dan-tinh-khoi-luong-vat-tu-inox-chinh-xac-cho-moi-du-an\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox ch\u00ednh x\u00e1c cho m\u1ecdi d\u1ef1 \u00e1n"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-du-lieu-nen-tang-ban-can-nam\">D\u1eef li\u1ec7u n\u1ec1n t\u1ea3ng b\u1ea1n c\u1ea7n n\u1eafm<\/a><\/li>\n<li><a href=\"#toc-1-cong-thuc-tinh-khoi-luong-theo-hinh-dang\">C\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng theo h\u00ecnh d\u1ea1ng<\/a><\/li>\n<li><a href=\"#toc-2-quy-trinh-6-buoc-tinh-khoi-luong-vat-tu-cho-du-an\">Quy tr\u00ecnh 6 b\u01b0\u1edbc t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 cho d\u1ef1 \u00e1n<\/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-hao-hut-de-xuat-theo-cong-doan-tham-khao\">Hao h\u1ee5t \u0111\u1ec1 xu\u1ea5t theo c\u00f4ng \u0111o\u1ea1n (tham kh\u1ea3o)<\/a><\/li>\n<li><a href=\"#toc-5-meo-dat-hang-de-toi-uu-chi-phi-va-tien-do\">M\u1eb9o \u0111\u1eb7t h\u00e0ng \u0111\u1ec3 t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 ti\u1ebfn \u0111\u1ed9<\/a><\/li>\n<li><a href=\"#toc-6-sai-sot-pho-bien-can-tranh\">Sai s\u00f3t ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-7-kiem-tra-cheo-nhanh-sanity-check\">Ki\u1ec3m tra ch\u00e9o nhanh (sanity check)<\/a><\/li>\n<li><a href=\"#toc-8-tai-lieu-tham-khao-ky-thuat\">T\u00e0i li\u1ec7u tham kh\u1ea3o k\u1ef9 thu\u1eadt<\/a><\/li>\n<li><a href=\"#toc-9-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>T\u00ednh \u0111\u00fang kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox ngay t\u1eeb \u0111\u1ea7u l\u00e0 b\u01b0\u1edbc quy\u1ebft \u0111\u1ecbnh \u0111\u1ec3 ch\u1ed1t ng\u00e2n s\u00e1ch, ti\u1ebfn \u0111\u1ed9 v\u00e0 ph\u01b0\u01a1ng \u00e1n mua h\u00e0ng. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p b\u1ed9 c\u00f4ng th\u1ee9c, h\u1ec7 s\u1ed1 v\u00e0 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 b\u1ea1n t\u1ef1 t\u00ednh nhanh cho t\u1ea5m\/\u1ed1ng\/thanh Inox theo b\u1ea3n v\u1ebd, c\u1ed9ng hao h\u1ee5t gia c\u00f4ng v\u00e0 t\u1ed1i \u01b0u \u0111\u1eb7t h\u00e0ng. Ch\u1ee7 \u0111\u1ec1 n\u00e0y l\u00e0 \u201cm\u1ea3nh gh\u00e9p\u201d tr\u1ecdng y\u1ebfu trong C\u1ea9m nang Mua h\u00e0ng Inox d\u00e0nh cho Doanh nghi\u1ec7p, \u0110\u1ea1i l\u00fd v\u00e0 K\u1ef9 s\u01b0, nh\u01b0ng b\u00e0i vi\u1ebft ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp \u0111\u1ec3 b\u1ea1n \u00e1p d\u1ee5ng ngay.<\/p>\n<h2 id=\"toc-0-du-lieu-nen-tang-ban-can-nam\">D\u1eef li\u1ec7u n\u1ec1n t\u1ea3ng b\u1ea1n c\u1ea7n n\u1eafm<\/h2>\n<h3>T\u1ef7 tr\u1ecdng (kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang) theo m\u00e1c Inox<\/h3>\n<p>&#8211; Inox 201: ~7.90 g\/cm3 (\u2248 7,900 kg\/m3)<br \/>\n&#8211; Inox 304\/304L: ~7.93 g\/cm3 (\u2248 7,930 kg\/m3) \u2013 d\u00f9ng ph\u1ed5 bi\u1ebfn nh\u1ea5t khi t\u00ednh to\u00e1n<br \/>\n&#8211; Inox 316\/316L: ~8.00 g\/cm3 (\u2248 8,000 kg\/m3)<br \/>\nG\u1ee3i \u00fd: N\u1ebfu kh\u00f4ng ch\u1eafc m\u00e1c, d\u00f9ng 7,93 cho t\u00ednh to\u00e1n ti\u00eau chu\u1ea9n; 316 n\u00ean d\u00f9ng 8,00 \u0111\u1ec3 an to\u00e0n.<\/p>\n<h3>Quy \u01b0\u1edbc k\u00edch th\u01b0\u1edbc v\u00e0 ti\u00eau chu\u1ea9n hay g\u1eb7p<\/h3>\n<p>&#8211; T\u1ea5m\/Plate\/Sheet: Theo ASTM A480\/A240. C\u1ee1 ph\u1ed5 bi\u1ebfn 1219\u00d72438 mm (4\u00d78), 1219\u00d73048 mm (4\u00d710). D\u1ea3i d\u00e0y t\u1eeb 0.5\u201350 mm.<br \/>\n&#8211; \u1ed0ng c\u00f4ng nghi\u1ec7p h\u00e0n\/\u0111\u00fac: ASTM A312, k\u00edch th\u01b0\u1edbc theo ASME B36.19M (OD c\u1ed1 \u0111\u1ecbnh theo \u201cDN\u201d, b\u1ec1 d\u00e0y theo Schedule: 10S, 40S\u2026).<br \/>\n&#8211; \u1ed0ng\/h\u1ed9p trang tr\u00ed: OD\/KT ngo\u00e0i theo mm, b\u1ec1 d\u00e0y 0.5\u20132.0 mm, chi\u1ec1u d\u00e0i th\u01b0\u1eddng 6 m.<br \/>\n&#8211; Thanh tr\u00f2n\/thanh la\/thanh vu\u00f4ng\/g\u00f3c: Chi\u1ec1u d\u00e0i ti\u00eau chu\u1ea9n 6 m (c\u00f3 th\u1ec3 kh\u00e1c theo nh\u00e0 m\u00e1y).<\/p>\n<h3>\u0110\u01a1n v\u1ecb v\u00e0 chuy\u1ec3n \u0111\u1ed5i<\/h3>\n<p>&#8211; 1 mm = 0.001 m; 1 cm = 0.01 m<br \/>\n&#8211; 1 g\/cm3 = 1,000 kg\/m3<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng (kg) = Th\u1ec3 t\u00edch (m3) \u00d7 T\u1ef7 tr\u1ecdng (kg\/m3)<\/p>\n<p>L\u01b0u \u00fd: Lu\u00f4n th\u1ed1ng nh\u1ea5t \u0111\u01a1n v\u1ecb tr\u01b0\u1edbc khi t\u00ednh. Sai l\u1ec7ch mm\u2013m l\u00e0 l\u1ed7i ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<h2 id=\"toc-1-cong-thuc-tinh-khoi-luong-theo-hinh-dang\">C\u00f4ng th\u1ee9c t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng theo h\u00ecnh d\u1ea1ng<\/h2>\n<p>Trong c\u00e1c c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y, d\u00f9ng t\u1ef7 tr\u1ecdng 7,930 kg\/m3 cho 304; thay b\u1eb1ng 8,000 kg\/m3 n\u1ebfu b\u1ea1n d\u00f9ng 316. C\u00e1c k\u00edch th\u01b0\u1edbc D, t, W, H t\u00ednh b\u1eb1ng mm, chi\u1ec1u d\u00e0i L t\u00ednh b\u1eb1ng m, k\u1ebft qu\u1ea3 kh\u1ed1i l\u01b0\u1ee3ng theo kg.<\/p>\n<h3>T\u1ea5m\/L\u00e1\/Plate\/Coil<\/h3>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng t\u1ea5m: Weight = Thickness(m) \u00d7 Width(m) \u00d7 Length(m) \u00d7 Density<br \/>\n&#8211; Quy \u0111\u1ed5i nhanh theo di\u1ec7n t\u00edch: kg\/m2 = Thickness(mm) \u00d7 7.93<br \/>\nV\u00ed d\u1ee5: T\u1ea5m 3 mm c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 23.79 kg\/m2 (v\u00ec 3 \u00d7 7.93).<br \/>\n&#8211; Cu\u1ed9n: Kh\u1ed1i l\u01b0\u1ee3ng m\u1ed7i m\u00e9t d\u00e0i = 7.93 \u00d7 Thickness(mm) \u00d7 Width(m)<br \/>\nChi\u1ec1u d\u00e0i cu\u1ed9n \u01b0\u1edbc t\u00ednh: Length(m) = TotalWeight(kg) \/ [7.93 \u00d7 Thickness(mm) \u00d7 Width(m)]<br \/>\n&#8211; G\u00e2n nh\u00e1m\/Ch\u1ed1ng tr\u01b0\u1ee3t: C\u1ed9ng th\u00eam 3\u20136% so v\u1edbi t\u1ea5m ph\u1eb3ng (th\u1ef1c t\u1ebf th\u01b0\u1eddng ~5%).<\/p>\n<h3>\u1ed0ng tr\u00f2n (hollow round)<\/h3>\n<p>&#8211; C\u00f4ng th\u1ee9c t\u1ed5ng qu\u00e1t: kg\/m = 0.006223 \u00d7 [Do2 \u2212 Di2]  (Do, Di t\u00ednh b\u1eb1ng mm; d\u00f9ng 0.006400 n\u1ebfu 316)<br \/>\n&#8211; V\u1edbi Di = Do \u2212 2t: kg\/m = 0.02489 \u00d7 t \u00d7 (Do \u2212 t)<br \/>\nG\u1ee3i \u00fd: Trang tr\u00ed th\u01b0\u1eddng Do theo mm; c\u00f4ng nghi\u1ec7p theo OD inch\/DN v\u00e0 b\u1ec1 d\u00e0y Schedule (tra theo ASME B36.19M).<\/p>\n<h3>H\u1ed9p vu\u00f4ng\/ch\u1eef nh\u1eadt (SHS\/RHS)<\/h3>\n<p>&#8211; Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n A = (B \u00d7 H) \u2212 (B \u2212 2t) \u00d7 (H \u2212 2t)  (mm2)<br \/>\n&#8211; kg\/m = 0.00793 \u00d7 A<br \/>\nV\u1edbi h\u1ed9p vu\u00f4ng s \u00d7 s \u00d7 t: A = s2 \u2212 (s \u2212 2t)2<\/p>\n<h3>Thanh tr\u00f2n (round bar, \u0111\u1eb7c)<\/h3>\n<p>&#8211; kg\/m = 0.006223 \u00d7 D2<\/p>\n<h3>Thanh la\/Flat bar<\/h3>\n<p>&#8211; kg\/m = 0.00793 \u00d7 Width(mm) \u00d7 Thickness(mm)<\/p>\n<h3>Th\u00e9p g\u00f3c ch\u1eef L (equal\/unequal angle)<\/h3>\n<p>&#8211; Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n A \u2248 t \u00d7 (b + h \u2212 t)<br \/>\n&#8211; kg\/m = 0.00793 \u00d7 A<br \/>\nL\u01b0u \u00fd: V\u1edbi g\u00f3c c\u00f3 bo m\u00e9p theo catalog nh\u00e0 s\u1ea3n xu\u1ea5t, d\u00f9ng di\u1ec7n t\u00edch th\u1ef1c t\u1ebf t\u1eeb b\u1ea3ng k\u1ef9 thu\u1eadt n\u1ebfu c\u00f3.<\/p>\n<h3>L\u01b0\u1edbi\/d\u00e2y (tham kh\u1ea3o nhanh)<\/h3>\n<p>&#8211; D\u00e2y tr\u00f2n: kg\/m = 0.006223 \u00d7 d2<br \/>\n&#8211; L\u01b0\u1edbi h\u00e0n\/l\u01b0\u1edbi \u0111an: kg\/m2 ph\u1ee5 thu\u1ed9c \u0111\u01b0\u1eddng k\u00ednh d\u00e2y v\u00e0 m\u1eadt \u0111\u1ed9 \u00f4; l\u1ea5y t\u1ed5ng chi\u1ec1u d\u00e0i d\u00e2y tr\u00ean 1 m2 \u00d7 kg\/m c\u1ee7a d\u00e2y \u0111\u01a1n.<\/p>\n<h2 id=\"toc-2-quy-trinh-6-buoc-tinh-khoi-luong-vat-tu-cho-du-an\">Quy tr\u00ecnh 6 b\u01b0\u1edbc t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 cho d\u1ef1 \u00e1n<\/h2>\n<p>1) X\u00e1c \u0111\u1ecbnh m\u00e1c Inox, b\u1ec1 m\u1eb7t v\u00e0 ti\u00eau chu\u1ea9n: 201\/304\/316; No.1\/2B\/HL\/No.4; c\u00f4ng nghi\u1ec7p (A312\/B36.19M) hay trang tr\u00ed.<br \/>\n2) Ch\u1ed1t k\u00edch th\u01b0\u1edbc theo b\u1ea3n v\u1ebd: d\u00e0y t, OD\/Do, ID\/Di (n\u1ebfu c\u00f3), k\u00edch th\u01b0\u1edbc ngo\u00e0i B\u00d7H, chi\u1ec1u d\u00e0i t\u1eebng \u0111o\u1ea1n, s\u1ed1 l\u01b0\u1ee3ng chi ti\u1ebft.<br \/>\n3) T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng l\u00fd thuy\u1ebft: D\u00f9ng c\u00f4ng th\u1ee9c theo t\u1eebng h\u00ecnh d\u1ea1ng. G\u1ed9p theo nh\u00f3m v\u1eadt t\u01b0.<br \/>\n4) C\u1ed9ng hao h\u1ee5t gia c\u00f4ng: C\u1eaft, ch\u1ea5n, h\u00e0n, m\u00e0i, ph\u1ebf li\u1ec7u. \u00c1p h\u1ec7 s\u1ed1 ph\u00f9 h\u1ee3p c\u00f4ng \u0111o\u1ea1n (xem ph\u1ea7n \u201cHao h\u1ee5t\u201d).<br \/>\n5) Ki\u1ec3m tra t\u00ednh kh\u1ea3 thi \u0111\u1eb7t h\u00e0ng: Quy \u0111\u1ed5i theo \u0111\u01a1n v\u1ecb b\u00e1n (t\u1ea5m\/\u1ed1ng\/thanh), chi\u1ec1u d\u00e0i 6 m, c\u1ee1 t\u1ea5m chu\u1ea9n 4\u00d78, 4\u00d710; s\u1ed1 l\u01b0\u1ee3ng l\u00e0m tr\u00f2n h\u1ee3p l\u00fd v\u00e0 t\u1ed1i \u01b0u c\u1eaft.<br \/>\n6) D\u1ef1 ph\u00f2ng ph\u1ee5 ki\u1ec7n\/ti\u00eau hao: Que d\u00e2y h\u00e0n, bi inox, n\u1eafp b\u1ecbt, m\u1eb7t b\u00edch, \u1ed1c v\u00edt; th\u01b0\u1eddng chi\u1ebfm 2\u20135% t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng th\u00e9p ch\u00ednh.<\/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<h3>V\u00ed d\u1ee5 1: N\u1eafp che b\u1eb1ng t\u1ea5m Inox 304<\/h3>\n<p>Y\u00eau c\u1ea7u: 8 t\u1ea5m, k\u00edch th\u01b0\u1edbc 2,000 \u00d7 1,000 mm, d\u00e0y 3 mm, ho\u00e0n thi\u1ec7n No.4, c\u1ed9ng 5% hao h\u1ee5t c\u1eaft.<br \/>\n&#8211; Di\u1ec7n t\u00edch 1 t\u1ea5m: 2.0 \u00d7 1.0 = 2.0 m2<br \/>\n&#8211; Kh\u1ed1i l\u01b0\u1ee3ng 1 t\u1ea5m: 3 \u00d7 7.93 \u00d7 2.0 = 47.58 kg<br \/>\n&#8211; 8 t\u1ea5m: 47.58 \u00d7 8 = 380.64 kg<br \/>\n&#8211; +5% hao h\u1ee5t: 380.64 \u00d7 1.05 = 399.67 kg<br \/>\nK\u1ebft lu\u1eadn: \u0110\u1eb7t h\u00e0ng t\u1ed1i thi\u1ec3u ~400 kg ho\u1eb7c 8 t\u1ea5m 3 mm (xem t\u1ed3n kho t\u1ea5m 1219\u00d72438\/3048 \u0111\u1ec3 t\u1ed1i \u01b0u c\u1eaft).<\/p>\n<h3>V\u00ed d\u1ee5 2: Lan can \u1ed1ng trang tr\u00ed 304 \u2013 \u00d838.1 \u00d7 1.5 mm<\/h3>\n<p>Kh\u1ed1i l\u01b0\u1ee3ng 80 m \u1ed1ng tay v\u1ecbn, c\u1ed9ng 7% hao h\u1ee5t c\u1eaft, h\u00e0n, u\u1ed1n.<br \/>\n&#8211; kg\/m = 0.02489 \u00d7 1.5 \u00d7 (38.1 \u2212 1.5) = 0.02489 \u00d7 54.9 = 1.366 kg\/m<br \/>\n&#8211; 80 m: 1.366 \u00d7 80 = 109.28 kg<br \/>\n&#8211; +7%: 109.28 \u00d7 1.07 = 117.93 kg<br \/>\nK\u1ebft lu\u1eadn: N\u00ean \u0111\u1eb7t 20 c\u00e2y 6 m (120 m) \u0111\u1ec3 \u0111\u1ee7 chi\u1ec1u d\u00e0i, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ~164 kg theo \u0111\u01a1n v\u1ecb b\u00e1n theo c\u00e2y; ho\u1eb7c \u0111\u1eb7t theo kg ~118\u2013120 kg n\u1ebfu b\u00e1n theo c\u00e2n.<\/p>\n<h3>V\u00ed d\u1ee5 3: Khung h\u1ed9p vu\u00f4ng 304 \u2013 40 \u00d7 40 \u00d7 1.2 mm, d\u00e0i 100 m<\/h3>\n<p>&#8211; A = 40\u00d740 \u2212 37.6\u00d737.6 = 1600 \u2212 1413.76 = 186.24 mm2<br \/>\n&#8211; kg\/m = 0.00793 \u00d7 186.24 = 1.477 kg\/m<br \/>\n&#8211; 100 m: 147.7 kg<br \/>\nC\u1ed9ng 6%: ~156.6 kg. T\u01b0\u01a1ng \u0111\u01b0\u01a1ng 27 c\u00e2y 6 m (162 m) n\u1ebfu \u0111\u1eb7t theo c\u00e2y.<\/p>\n<h3>V\u00ed d\u1ee5 4: Thanh tr\u00f2n \u0111\u1eb7c 304 \u2013 \u00d820, t\u1ed5ng d\u00e0i 15 m<\/h3>\n<p>&#8211; kg\/m = 0.006223 \u00d7 202 = 0.006223 \u00d7 400 = 2.489 kg\/m<br \/>\n&#8211; 15 m: 2.489 \u00d7 15 = 37.34 kg<br \/>\nC\u1ed9ng 3%: ~38.5 kg \u2192 7 c\u00e2y 6 m (42 m) n\u1ebfu mua theo c\u00e2y; c\u00e2n \u0111\u1ed1i t\u1ed3n kho \u0111\u1ec3 t\u1ed1i \u01b0u.<\/p>\n<h3>V\u00ed d\u1ee5 5: Quy \u0111\u1ed5i chi\u1ec1u d\u00e0i cu\u1ed9n 304 \u2013 1.0 \u00d7 1219 mm, kh\u1ed1i l\u01b0\u1ee3ng 2,000 kg<\/h3>\n<p>&#8211; Kh\u1ed1i l\u01b0\u1ee3ng 1 m d\u00e0i: 7.93 \u00d7 1.0 \u00d7 1.219 = 9.66 kg\/m<br \/>\n&#8211; Chi\u1ec1u d\u00e0i cu\u1ed9n: 2,000 \/ 9.66 \u2248 207 m<\/p>\n<h2 id=\"toc-4-hao-hut-de-xuat-theo-cong-doan-tham-khao\">Hao h\u1ee5t \u0111\u1ec1 xu\u1ea5t theo c\u00f4ng \u0111o\u1ea1n (tham kh\u1ea3o)<\/h2>\n<p>&#8211; C\u1eaft CNC\/plasma\/laser t\u1ea5m: 3\u20135% (pattern t\u1ed1i \u01b0u nesting t\u1ed1t s\u1ebd th\u1ea5p h\u01a1n)<br \/>\n&#8211; C\u1eaft \u1ed1ng\/thanh: 2\u20134% (t\u00f9y s\u1ed1 m\u1ed1i c\u1eaft v\u00e0 chi\u1ec1u d\u00e0i th\u1eeba kh\u00f4ng d\u00f9ng \u0111\u01b0\u1ee3c)<br \/>\n&#8211; Ch\u1ea5n\/u\u1ed1n t\u1ea5m: 2\u20134% (do bavia, m\u1eabu th\u1eed)<br \/>\n&#8211; H\u00e0n r\u00e1p k\u1ebft c\u1ea5u: 4\u20138% (\u0111i\u1ec1u ch\u1ec9nh, s\u1eeda bavia, ph\u1ebf li\u1ec7u)<br \/>\n&#8211; \u0110\u00e1nh x\u01b0\u1edbc\/\u0111\u00e1nh b\u00f3ng: 1\u20132% (m\u1ea5t do m\u00e0i, n\u1eafn)<br \/>\n&#8211; T\u1ea5m g\u00e2n\/nh\u00e1m: c\u1ed9ng th\u00eam 3\u20136% so v\u1edbi t\u1ea5m ph\u1eb3ng<br \/>\nL\u01b0u \u00fd: D\u1ef1 \u00e1n c\u00e0ng ph\u1ee9c t\u1ea1p, h\u1ec7 s\u1ed1 hao h\u1ee5t c\u00e0ng n\u00ean \u0111\u1eb7t cao \u1edf bi\u00ean tr\u00ean.<\/p>\n<h2 id=\"toc-5-meo-dat-hang-de-toi-uu-chi-phi-va-tien-do\">M\u1eb9o \u0111\u1eb7t h\u00e0ng \u0111\u1ec3 t\u1ed1i \u01b0u chi ph\u00ed v\u00e0 ti\u1ebfn \u0111\u1ed9<\/h2>\n<p>&#8211; Kh\u1edbp v\u1edbi k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n: \u01afu ti\u00ean thi\u1ebft k\u1ebf theo b\u1ed9i s\u1ed1 t\u1ea5m 1219\u00d72438\/3048 v\u00e0 c\u00e2y 6 m \u0111\u1ec3 gi\u1ea3m ph\u1ebf li\u1ec7u.<br \/>\n&#8211; Ch\u1ecdn \u0111\u00fang m\u00e1c theo m\u00f4i tr\u01b0\u1eddng: 304 cho n\u1ed9i th\u1ea5t\/ngo\u1ea1i th\u1ea5t th\u01b0\u1eddng; 316 cho m\u00f4i tr\u01b0\u1eddng bi\u1ec3n\/h\u00f3a ch\u1ea5t. D\u00f9ng 201 ch\u1ec9 khi \u0111i\u1ec1u ki\u1ec7n \u0103n m\u00f2n nh\u1eb9 v\u00e0 kh\u00e1ch h\u00e0ng ch\u1ea5p thu\u1eadn.<br \/>\n&#8211; Xem dung sai \u0111\u1ed9 d\u00e0y: Theo ASTM A480, \u0111\u1ed9 d\u00e0y th\u1ef1c c\u00f3 th\u1ec3 l\u1ec7ch so v\u1edbi danh \u0111\u1ecbnh; khi c\u00e2n theo kg c\u1ea7n hi\u1ec3u sai s\u1ed1 cho nghi\u1ec7m thu.<br \/>\n&#8211; Th\u1ecfa thu\u1eadn \u0111\u01a1n v\u1ecb giao d\u1ecbch: Theo kg, theo t\u1ea5m\/c\u00e2y, hay theo m\u00e9t. R\u00f5 r\u00e0ng \u0111\u1ec3 tr\u00e1nh ch\u00eanh l\u1ec7ch b\u00e0n giao.<br \/>\n&#8211; \u0110\u1eb7t d\u01b0 h\u1ee3p l\u00fd: L\u00e0m tr\u00f2n theo c\u00e2y\/t\u1ea5m \u0111\u1ec3 tr\u00e1nh thi\u1ebfu v\u1eadt t\u01b0 gi\u1eefa ch\u1eebng (th\u01b0\u1eddng \u2265 1\u20132 c\u00e2y\/t\u1ea5m d\u1ef1 ph\u00f2ng cho l\u00f4 l\u1edbn).<br \/>\n&#8211; \u0110\u1eebng qu\u00ean ph\u1ee5 ki\u1ec7n: N\u1eafp b\u1ecbt, co, t\u00ea, b\u00edch, \u1ed1c v\u00edt A2\/A4, d\u00e2y\/que h\u00e0n 308L\/316L, h\u00f3a ch\u1ea5t \u0111\u00e1nh passivation.<\/p>\n<h2 id=\"toc-6-sai-sot-pho-bien-can-tranh\">Sai s\u00f3t ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n<p>&#8211; L\u1eabn l\u1ed9n DN v\u1edbi OD th\u1ef1c: \u1ed0ng inox c\u00f4ng nghi\u1ec7p theo ASME B36.19M c\u00f3 OD c\u1ed1 \u0111\u1ecbnh; DN ch\u1ec9 l\u00e0 danh \u0111\u1ecbnh, kh\u00f4ng ph\u1ea3i \u0111\u01b0\u1eddng k\u00ednh th\u1ef1c.<br \/>\n&#8211; Nh\u1ea7m \u0111\u01a1n v\u1ecb mm\u2013m d\u1eabn \u0111\u1ebfn sai h\u1ec7 s\u1ed1 1,000 l\u1ea7n.<br \/>\n&#8211; D\u00f9ng h\u1ec7 s\u1ed1 th\u00e9p carbon cho inox (7.85 thay v\u00ec 7.93\u20138.00) \u2192 sai s\u1ed1 1\u20132%.<br \/>\n&#8211; B\u1ecf qua hao h\u1ee5t v\u00e0 dung sai \u0111\u1ed9 d\u00e0y \u2192 thi\u1ebfu v\u1eadt t\u01b0 khi gia c\u00f4ng.<br \/>\n&#8211; Qu\u00ean t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ph\u1ee5 ki\u1ec7n v\u00e0 ti\u00eau hao h\u00e0n.<br \/>\n&#8211; Kh\u00f4ng t\u1ed1i \u01b0u nesting\/c\u1eaft \u2192 t\u0103ng ph\u1ebf li\u1ec7u v\u00e0 th\u1eddi gian m\u00e1y.<\/p>\n<h2 id=\"toc-7-kiem-tra-cheo-nhanh-sanity-check\">Ki\u1ec3m tra ch\u00e9o nhanh (sanity check)<\/h2>\n<p>&#8211; T\u1ea5m: 1 mm \u2248 7.93 kg\/m2; 2 mm \u2248 15.86; 3 mm \u2248 23.79; 5 mm \u2248 39.65<br \/>\n&#8211; \u1ed0ng \u00d838.1\u00d71.5: ~1.36 kg\/m (304)<br \/>\n&#8211; H\u1ed9p 40\u00d740\u00d71.2: ~1.48 kg\/m (304)<br \/>\nN\u1ebfu k\u1ebft qu\u1ea3 c\u1ee7a b\u1ea1n l\u1ec7ch qu\u00e1 xa c\u00e1c m\u1ed1c n\u00e0y, h\u00e3y ki\u1ec3m tra l\u1ea1i \u0111\u01a1n v\u1ecb v\u00e0 c\u00f4ng th\u1ee9c.<\/p>\n<h2 id=\"toc-8-tai-lieu-tham-khao-ky-thuat\">T\u00e0i li\u1ec7u tham kh\u1ea3o k\u1ef9 thu\u1eadt<\/h2>\n<p>&#8211; ASTM A480\/A480M \u2013 Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip. Trang ASTM: https:\/\/www.astm.org\/a0480_a0480m-23.html<br \/>\n&#8211; ASTM A240 \u2013 Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and General Applications. https:\/\/www.astm.org\/a0240_a0240m-20.html<br \/>\n&#8211; ASTM A312\/A312M \u2013 Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes. https:\/\/www.astm.org\/a0312_a0312m-22.html<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe (k\u00edch th\u01b0\u1edbc\/OD\/Schedule). https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b36-19-welded-and-seamless-wrought-stainless-steel-pipe<br \/>\n&#8211; Outokumpu Stainless Steel Handbook (t\u1ef7 tr\u1ecdng, t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u): https:\/\/www.outokumpu.com\/en\/stainless-steel\/handbook<br \/>\n&#8211; SSINA \u2013 Designer Handbook, v\u1eadt li\u1ec7u v\u00e0 t\u00ednh ch\u1ea5t: https:\/\/www.ssina.com\/resources\/<\/p>\n<h2 id=\"toc-9-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ec3 t\u00ednh ch\u00ednh x\u00e1c kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 Inox, h\u00e3y: (1) ch\u1ecdn \u0111\u00fang m\u00e1c v\u00e0 ti\u00eau chu\u1ea9n, (2) d\u00f9ng c\u00f4ng th\u1ee9c ph\u00f9 h\u1ee3p t\u1eebng h\u00ecnh d\u1ea1ng v\u1edbi t\u1ef7 tr\u1ecdng 7.93\u20138.00, (3) ki\u1ec3m so\u00e1t \u0111\u01a1n v\u1ecb, (4) c\u1ed9ng hao h\u1ee5t theo th\u1ef1c t\u1ebf gia c\u00f4ng, v\u00e0 (5) t\u1ed1i \u01b0u theo k\u00edch th\u01b0\u1edbc b\u00e1n ti\u00eau chu\u1ea9n. V\u1edbi b\u1ed9 c\u00f4ng th\u1ee9c v\u00e0 v\u00ed d\u1ee5 trong b\u00e0i, b\u1ea1n c\u00f3 th\u1ec3 l\u1eadp d\u1ef1 to\u00e1n nhanh, \u0111\u1eb7t h\u00e0ng chu\u1ea9n, v\u00e0 h\u1ea1n ch\u1ebf thi\u1ebfu\/th\u1eeba v\u1eadt t\u01b0 ngay t\u1eeb b\u01b0\u1edbc thi\u1ebft k\u1ebf.<\/p>\n<p>C\u1ea7n file t\u00ednh\/ki\u1ec3m tra nhanh cho d\u1ef1 \u00e1n c\u1ee5 th\u1ec3? 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.<br \/>\nHotline: 0343.417.281<br \/>\nEmail: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng th\u1ee9c, h\u1ec7 s\u1ed1 v\u00e0 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf gi\u00fap t\u00ednh nhanh kh\u1ed1i l\u01b0\u1ee3ng t\u1ea5m, \u1ed1ng, thanh Inox theo b\u1ea3n v\u1ebd; c\u1ed9ng hao h\u1ee5t v\u00e0 t\u1ed1i \u01b0u \u0111\u1eb7t h\u00e0ng chu\u1ea9n x\u00e1c.<\/p>\n","protected":false},"author":7,"featured_media":1052,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1481","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\/1481","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=1481"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1481\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1052"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}