{"id":1694,"date":"2026-02-19T12:34:08","date_gmt":"2026-02-19T05:34:08","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/chon-co-te-bau-giam-van-mat-bich-inox-cong-nghiep-chuan\/"},"modified":"2026-02-19T12:34:08","modified_gmt":"2026-02-19T05:34:08","slug":"chon-co-te-bau-giam-van-mat-bich-inox-cong-nghiep-chuan","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/chon-co-te-bau-giam-van-mat-bich-inox-cong-nghiep-chuan\/","title":{"rendered":"Ch\u1ecdn Co, T\u00ea, B\u1ea7u gi\u1ea3m, Van, M\u1eb7t b\u00edch Inox c\u00f4ng nghi\u1ec7p chu\u1ea9n"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-tong-quan-nhanh-he-phu-kien-inox-cong-nghiep-gom-n\">T\u1ed5ng quan nhanh: h\u1ec7 ph\u1ee5 ki\u1ec7n inox c\u00f4ng nghi\u1ec7p g\u1ed3m nh\u1eefng g\u00ec?<\/a><\/li>\n<li><a href=\"#toc-1-vat-lieu-va-tieu-chuan-xuong-song-de-chon-dung\">V\u1eadt li\u1ec7u v\u00e0 ti\u00eau chu\u1ea9n: \u201cx\u01b0\u01a1ng s\u1ed1ng\u201d \u0111\u1ec3 ch\u1ecdn \u0111\u00fang<\/a><\/li>\n<li><a href=\"#toc-2-co-inox-elbow-chon-goc-ban-kinh-va-ket-noi\">Co Inox (Elbow): ch\u1ecdn g\u00f3c, b\u00e1n k\u00ednh v\u00e0 k\u1ebft n\u1ed1i<\/a><\/li>\n<li><a href=\"#toc-3-te-inox-tee-chia-nhanh-dung-tai-va-dung-chuan\">T\u00ea Inox (Tee): chia nh\u00e1nh \u0111\u00fang t\u1ea3i v\u00e0 \u0111\u00fang chu\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-4-bau-giam-inox-reducer-dong-tam-hay-lech-tam\">B\u1ea7u gi\u1ea3m Inox (Reducer): \u0111\u1ed3ng t\u00e2m hay l\u1ec7ch t\u00e2m?<\/a><\/li>\n<li><a href=\"#toc-5-van-inox-chon-loai-theo-chuc-nang-va-moi-chat\">Van Inox: ch\u1ecdn lo\u1ea1i theo ch\u1ee9c n\u0103ng v\u00e0 m\u00f4i ch\u1ea5t<\/a><\/li>\n<li><a href=\"#toc-6-mat-bich-inox-kieu-ket-noi-be-mat-gioang-va-bulong\">M\u1eb7t b\u00edch Inox: ki\u1ec3u k\u1ebft n\u1ed1i, b\u1ec1 m\u1eb7t, gio\u0103ng v\u00e0 bul\u00f4ng<\/a><\/li>\n<li><a href=\"#toc-7-kich-co-ap-luc-do-day-cach-dich-giua-cac-he\">K\u00edch c\u1ee1, \u00e1p l\u1ef1c, \u0111\u1ed9 d\u00e0y: c\u00e1ch \u201cd\u1ecbch\u201d gi\u1eefa c\u00e1c h\u1ec7<\/a><\/li>\n<li><a href=\"#toc-8-huong-dan-chon-nhanh-cho-du-an\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn nhanh cho d\u1ef1 \u00e1n<\/a><\/li>\n<li><a href=\"#toc-9-lap-dat-va-kiem-tra-thuc-hanh-tot-tai-cong-truong\">L\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra: th\u1ef1c h\u00e0nh t\u1ed1t t\u1ea1i c\u00f4ng tr\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"#toc-10-loi-thuong-gap-va-cach-tranh\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-11-vi-du-ung-dung-nhanh\">V\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng nhanh<\/a><\/li>\n<li><a href=\"#toc-12-kiem-soat-chat-luong-va-mua-hang-thong-minh\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 mua h\u00e0ng th\u00f4ng minh<\/a><\/li>\n<li><a href=\"#toc-13-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-14-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Ph\u1ee5 ki\u1ec7n \u0111\u01b0\u1eddng \u1ed1ng inox c\u00f4ng nghi\u1ec7p (co, t\u00ea, b\u1ea7u gi\u1ea3m, van, m\u1eb7t b\u00edch) l\u00e0 \u201cx\u01b0\u01a1ng s\u1ed1ng\u201d c\u1ee7a m\u1ecdi h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng: c\u1ea5p tho\u00e1t n\u01b0\u1edbc, h\u01a1i, kh\u00ed n\u00e9n, h\u00f3a ch\u1ea5t, th\u1ef1c ph\u1ea9m\u2026 B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7, chu\u1ea9n k\u1ef9 thu\u1eadt v\u00e0 c\u1eadp nh\u1eadt theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf \u0111\u1ec3 b\u1ea1n ch\u1ecdn \u0111\u00fang ch\u1ee7ng lo\u1ea1i, \u0111\u00fang c\u1ea5p \u00e1p v\u00e0 l\u1eafp \u0111\u1eb7t an to\u00e0n, t\u1ed1i \u01b0u chi ph\u00ed.<\/p>\n<h2 id=\"toc-0-tong-quan-nhanh-he-phu-kien-inox-cong-nghiep-gom-n\">T\u1ed5ng quan nhanh: h\u1ec7 ph\u1ee5 ki\u1ec7n inox c\u00f4ng nghi\u1ec7p g\u1ed3m nh\u1eefng g\u00ec?<\/h2>\n<p>&#8211; Co (elbow): \u0111\u1ed5i h\u01b0\u1edbng d\u00f2ng ch\u1ea3y 45\u00b0, 90\u00b0, 180\u00b0, b\u00e1n k\u00ednh d\u00e0i (LR) ho\u1eb7c ng\u1eafn (SR).<br \/>\n&#8211; T\u00ea (tee): chia nh\u00e1nh l\u01b0u ch\u1ea5t, d\u1ea1ng \u0111\u1ec1u ho\u1eb7c gi\u1ea3m.<br \/>\n&#8211; B\u1ea7u gi\u1ea3m (reducer): n\u1ed1i \u1ed1ng kh\u00e1c \u0111\u01b0\u1eddng k\u00ednh, d\u1ea1ng \u0111\u1ed3ng t\u00e2m ho\u1eb7c l\u1ec7ch t\u00e2m.<br \/>\n&#8211; Van (valve): \u0111\u00f3ng\/m\u1edf, \u0111i\u1ec1u ti\u1ebft, m\u1ed9t chi\u1ec1u; ph\u1ed5 bi\u1ebfn c\u00f3 bi, c\u1ed5ng, c\u1ea7u, b\u01b0\u1edbm, m\u1ed9t chi\u1ec1u.<br \/>\n&#8211; M\u1eb7t b\u00edch (flange): k\u1ebft n\u1ed1i th\u00e1o l\u1eafp; nhi\u1ec1u ki\u1ec3u: h\u00e0n c\u1ed5, tr\u01b0\u1ee3t, socket, ren, m\u00f9, lap joint.<\/p>\n<p>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh t\u1ea1i Vi\u1ec7t Nam:<br \/>\n&#8211; N\u01b0\u1edbc s\u1ea1ch\/RO, kh\u00ed n\u00e9n, h\u1ec7 PCCC, chiller HVAC (Class 150\/PN16, JIS 10K).<br \/>\n&#8211; H\u01a1i b\u00e3o h\u00f2a 6\u201316 bar (Class 150\/300, Sch40S\/80S).<br \/>\n&#8211; Th\u1ef1c ph\u1ea9m \u2013 \u0111\u1ed3 u\u1ed1ng (inox 304L\/316L, k\u1ebft n\u1ed1i clamp).<br \/>\n&#8211; H\u00f3a ch\u1ea5t nh\u1eb9\/ven bi\u1ec3n (\u01b0u ti\u00ean 316L, gasket PTFE).<\/p>\n<h2 id=\"toc-1-vat-lieu-va-tieu-chuan-xuong-song-de-chon-dung\">V\u1eadt li\u1ec7u v\u00e0 ti\u00eau chu\u1ea9n: \u201cx\u01b0\u01a1ng s\u1ed1ng\u201d \u0111\u1ec3 ch\u1ecdn \u0111\u00fang<\/h2>\n<h3>M\u00e1c inox ph\u1ed5 bi\u1ebfn<\/h3>\n<p>&#8211; Inox 201: chi ph\u00ed th\u1ea5p, ch\u1ed1ng \u0103n m\u00f2n k\u00e9m trong m\u00f4i tr\u01b0\u1eddng chloride; ch\u1ec9 n\u00ean d\u00f9ng cho kh\u00ed n\u00e9n kh\u00f4, m\u00f4i tr\u01b0\u1eddng trong nh\u00e0 kh\u00f4 r\u00e1o, kh\u00f4ng khuy\u1ebfn ngh\u1ecb cho n\u01b0\u1edbc bi\u1ec3n\/h\u00f3a ch\u1ea5t.<br \/>\n&#8211; Inox 304\/304L (UNS S30400\/S30403): c\u00e2n b\u1eb1ng gi\u00e1 \u2013 b\u1ec1n \u2013 ch\u1ed1ng \u0103n m\u00f2n chung t\u1ed1t; 304L h\u00e0n \u00edt b\u1ecb nh\u1ea1y c\u1ea3m li\u00ean k\u1ebft h\u1ea1t.<br \/>\n&#8211; Inox 316\/316L (UNS S31600\/S31603): Mo\u22482\u20132.5% t\u0103ng ch\u1ed1ng r\u1ed7 chloride; t\u1ed1i \u01b0u cho n\u01b0\u1edbc m\u1eb7n, h\u00f3a ch\u1ea5t nh\u1eb9, th\u1ef1c ph\u1ea9m cao c\u1ea5p.<br \/>\nG\u1ee3i \u00fd nhanh: N\u01b0\u1edbc\/kh\u00f4ng kh\u00ed th\u00f4ng th\u01b0\u1eddng ch\u1ecdn 304L; m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n\/h\u00f3a ch\u1ea5t ch\u1ecdn 316L; h\u1ea1n ch\u1ebf d\u00f9ng 201 cho c\u00f4ng nghi\u1ec7p \u01b0\u1edbt.<\/p>\n<h3>Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf \u00e1p d\u1ee5ng<\/h3>\n<p>&#8211; K\u00edch th\u01b0\u1edbc\/\u0111\u1ed9 d\u00e0y \u1ed1ng inox: ASME B36.19M (Sch 10S\/40S\/80S).<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n h\u00e0n \u0111\u1ed1i \u0111\u1ea7u (co, t\u00ea, b\u1ea7u gi\u1ea3m): ASME B16.9; v\u1eadt li\u1ec7u: ASTM A403 WP304(L)\/WP316(L).<br \/>\n&#8211; Ph\u1ee5 ki\u1ec7n r\u00e8n ren\/socket: ASME B16.11; v\u1eadt li\u1ec7u r\u00e8n: ASTM A182 F304(L)\/F316(L).<br \/>\n&#8211; M\u1eb7t b\u00edch: ASME B16.5 (Class 150\/300\/600\u2026), EN 1092-1 ho\u1eb7c ISO 7005 (PN10\/16\/25\u2026), JIS B2220 (5K\/10K\/16K\/20K); v\u1eadt li\u1ec7u r\u00e8n: ASTM A182 F304\/316.<br \/>\n&#8211; Van: th\u00e2n \u0111\u00fac ASTM A351 CF8\/CF8M, th\u00e2n r\u00e8n ASTM A182 F304\/316; ti\u00eau chu\u1ea9n tham chi\u1ebfu API 600\/602\/607, ISO 5211 (truy\u1ec1n \u0111\u1ed9ng).<br \/>\n&#8211; Ren: NPT theo ASME B1.20.1; BSPT (R) theo ISO 7-1 (ph\u1ed5 bi\u1ebfn t\u1ea1i VN).<br \/>\n&#8211; Piping code: ASME B31.3 (process piping), h\u01b0\u1edbng d\u1eabn si\u1ebft bul\u00f4ng PCC-1.<br \/>\nL\u01b0u \u00fd th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng: H\u00e0ng l\u01b0u th\u00f4ng t\u1ea1i Vi\u1ec7t Nam ph\u1ed5 bi\u1ebfn JIS 10K, PN16 v\u00e0 ANSI Class 150. Khi \u0111\u1ed3ng b\u1ed9 thi\u1ebft b\u1ecb nh\u1eadp M\u1ef9\/EU\/Nh\u1eadt, c\u1ea7n chuy\u1ec3n \u0111\u1ed5i \u0111\u00fang h\u1ec7 ti\u00eau chu\u1ea9n.<\/p>\n<h2 id=\"toc-2-co-inox-elbow-chon-goc-ban-kinh-va-ket-noi\">Co Inox (Elbow): ch\u1ecdn g\u00f3c, b\u00e1n k\u00ednh v\u00e0 k\u1ebft n\u1ed1i<\/h2>\n<p>&#8211; G\u00f3c\/ki\u1ec3u: 90\u00b0, 45\u00b0, 180\u00b0; c\u00f3 lo\u1ea1i co gi\u1ea3m, co h\u00e0n \u0111\u1ed1i \u0111\u1ea7u (BW), socket weld (SW), ren (NPT\/BSPT).<br \/>\n&#8211; LR vs SR: LR (R\u22481.5D) gi\u1ea3m t\u1ed5n th\u1ea5t \u00e1p, d\u1ec5 v\u1ec7 sinh; SR (R\u22481D) ti\u1ebft ki\u1ec7m kh\u00f4ng gian nh\u01b0ng t\u1ed5n th\u1ea5t l\u1edbn h\u01a1n.<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y: theo schedule \u1ed1ng; v\u1edbi h\u01a1i\/\u00e1p l\u1ef1c cao khuy\u1ebfn ngh\u1ecb Sch40S tr\u1edf l\u00ean.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng:<br \/>\n  &#8211; N\u01b0\u1edbc\/kh\u00ed n\u00e9n: 90\u00b0 LR BW, Sch10S\/40S.<br \/>\n  &#8211; H\u01a1i: 90\u00b0 LR BW, Sch40S\/80S; h\u00e0n GTAW, back purge argon.<br \/>\n  &#8211; Th\u1ef1c ph\u1ea9m: co clamp b\u00e1n k\u00ednh d\u00e0i, b\u1ec1 m\u1eb7t b\u00f3ng Ra \u22640.8 \u00b5m.<\/p>\n<h2 id=\"toc-3-te-inox-tee-chia-nhanh-dung-tai-va-dung-chuan\">T\u00ea Inox (Tee): chia nh\u00e1nh \u0111\u00fang t\u1ea3i v\u00e0 \u0111\u00fang chu\u1ea9n<\/h2>\n<p>&#8211; T\u00ea \u0111\u1ec1u vs t\u00ea gi\u1ea3m: t\u00ea gi\u1ea3m gi\u00fap gi\u1ea3m xung l\u1ef1c v\u00e0 nhi\u1ec5u lo\u1ea1n \u1edf nh\u00e1nh.<br \/>\n&#8211; K\u1ebft n\u1ed1i: BW (ASME B16.9) cho h\u1ec7 \u00e1p l\u1ef1c\/c\u1ee1 l\u1edbn; SW\/ren cho DN\u226450.<br \/>\n&#8211; L\u01b0u \u00fd k\u1ef9 thu\u1eadt: Nh\u00e1nh ch\u1ecbu l\u1ef1c c\u1ea7n x\u00e9t gia c\u01b0\u1eddng theo ASME B31.3 khi \u00e1p l\u1ef1c\/nhi\u1ec7t \u0111\u1ed9 cao; tr\u00e1nh b\u1ed1 tr\u00ed t\u00ea g\u1ea7n co \u0111\u1ec3 gi\u1ea3m nhi\u1ec5u lo\u1ea1n.<\/p>\n<h2 id=\"toc-4-bau-giam-inox-reducer-dong-tam-hay-lech-tam\">B\u1ea7u gi\u1ea3m Inox (Reducer): \u0111\u1ed3ng t\u00e2m hay l\u1ec7ch t\u00e2m?<\/h2>\n<p>&#8211; \u0110\u1ed3ng t\u00e2m (Concentric): d\u00f9ng cho \u0111\u01b0\u1eddng ngang\/ch\u1ecbu \u00e1p cao; d\u00f2ng \u0111\u1ed1i x\u1ee9ng.<br \/>\n&#8211; L\u1ec7ch t\u00e2m (Eccentric):<br \/>\n  &#8211; H\u00fat b\u01a1m ch\u1ea5t l\u1ecfng: l\u1eafp \u201cm\u1eb7t ph\u1eb3ng tr\u00ean\u201d (FSU) \u0111\u1ec3 tr\u00e1nh b\u1eaby kh\u00ed.<br \/>\n  &#8211; X\u1ea3 b\u01a1m\/h\u1ec7 c\u00f3 c\u1eb7n: \u201cm\u1eb7t ph\u1eb3ng d\u01b0\u1edbi\u201d (FSD) \u0111\u1ec3 tr\u00e1nh \u0111\u1ecdng c\u1eb7n.<br \/>\n&#8211; Quy t\u1eafc ch\u1ecdn: Kh\u00f4ng nh\u1ea3y c\u1ee1 qu\u00e1 l\u1edbn trong m\u1ed9t \u0111o\u1ea1n ng\u1eafn; \u01b0u ti\u00ean d\u1ea7n \u0111\u1ec1u \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ee5t \u00e1p v\u00e0 x\u00e2m th\u1ef1c b\u01a1m.<\/p>\n<h2 id=\"toc-5-van-inox-chon-loai-theo-chuc-nang-va-moi-chat\">Van Inox: ch\u1ecdn lo\u1ea1i theo ch\u1ee9c n\u0103ng v\u00e0 m\u00f4i ch\u1ea5t<\/h2>\n<p>&#8211; Van bi (Ball): \u0111\u00f3ng\/m\u1edf nhanh, t\u1ed5n th\u1ea5t th\u1ea5p; kh\u00f4ng l\u00fd t\u01b0\u1edfng cho \u0111i\u1ec1u ti\u1ebft tuy\u1ebfn t\u00ednh; seat PTFE\/RPTFE, Class 150\u2013800, ren\/SW\/BW\/flanged.<br \/>\n&#8211; Van c\u1ed5ng (Gate): m\u1edf to\u00e0n ph\u1ea7n, d\u00f9ng on\/off; \u0111\u00f3ng m\u1edf ch\u1eadm; ph\u00f9 h\u1ee3p \u0111\u01b0\u1eddng k\u00ednh l\u1edbn, h\u01a1i\/n\u01b0\u1edbc.<br \/>\n&#8211; Van c\u1ea7u (Globe): \u0111i\u1ec1u ti\u1ebft ch\u00ednh x\u00e1c, t\u1ed5n th\u1ea5t l\u1edbn h\u01a1n; d\u00f9ng cho h\u01a1i, \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng.<br \/>\n&#8211; Van b\u01b0\u1edbm (Butterfly): nh\u1eb9, kinh t\u1ebf cho DN l\u1edbn; ph\u00f9 h\u1ee3p n\u01b0\u1edbc\/kh\u00ed, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh; c\u00f3 th\u00e2n k\u1eb9p wafer\/lug, \u0111\u1ec7m EPDM\/NBR\/PTFE; ki\u1ec3m tra t\u01b0\u01a1ng th\u00edch h\u00f3a ch\u1ea5t.<br \/>\n&#8211; Van m\u1ed9t chi\u1ec1u (Check): ng\u0103n ch\u1ea3y ng\u01b0\u1ee3c; l\u00e1 l\u1eadt, \u0111\u0129a l\u00f2 xo, swing\/dual-plate; ch\u1ecdn theo h\u01b0\u1edbng l\u1eafp v\u00e0 kh\u00f4ng gian.<br \/>\n&#8211; Ch\u1ecdn c\u1ea5p \u00e1p:<br \/>\n  &#8211; H\u1ec7 n\u01b0\u1edbc\/kh\u00f4ng kh\u00ed: JIS 10K ho\u1eb7c PN16, Class 150.<br \/>\n  &#8211; H\u01a1i \u226510 bar: xem x\u00e9t Class 300; th\u00e2n\/\u0111\u1ec7m ch\u1ecbu nhi\u1ec7t ph\u00f9 h\u1ee3p.<br \/>\n&#8211; Truy\u1ec1n \u0111\u1ed9ng: tay g\u1ea1t, tay quay, kh\u00ed n\u00e9n\/\u0111i\u1ec7n; v\u1edbi van b\u01b0\u1edbm\/bi DN l\u1edbn, n\u00ean ti\u00eau chu\u1ea9n h\u00f3a tr\u1ee5c theo ISO 5211 \u0111\u1ec3 d\u1ec5 t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p>\n<h2 id=\"toc-6-mat-bich-inox-kieu-ket-noi-be-mat-gioang-va-bulong\">M\u1eb7t b\u00edch Inox: ki\u1ec3u k\u1ebft n\u1ed1i, b\u1ec1 m\u1eb7t, gio\u0103ng v\u00e0 bul\u00f4ng<\/h2>\n<p>&#8211; Ki\u1ec3u m\u1eb7t b\u00edch:<br \/>\n  &#8211; H\u00e0n c\u1ed5 (Welding Neck): cho \u00e1p l\u1ef1c\/nhi\u1ec7t \u0111\u1ed9 cao, gi\u1ea3m t\u1eadp trung \u1ee9ng su\u1ea5t.<br \/>\n  &#8211; Tr\u01b0\u1ee3t (Slip-On): kinh t\u1ebf, l\u1eafp r\u00e1p d\u1ec5, \u00e1p l\u1ef1c v\u1eeba.<br \/>\n  &#8211; Socket Weld: DN nh\u1ecf \u00e1p cao.<br \/>\n  &#8211; Ren (Threaded): h\u1ec7 th\u1ea5p \u00e1p, DN nh\u1ecf, l\u1eafp nhanh.<br \/>\n  &#8211; M\u00f9 (Blind): b\u1ecbt cu\u1ed1i \u0111\u01b0\u1eddng \u1ed1ng, th\u1eed \u00e1p.<br \/>\n  &#8211; Lap Joint: d\u00f9ng v\u1edbi stub end, ti\u1ec7n th\u00e1o l\u1eafp\/\u0111i\u1ec1u ch\u1ec9nh.<br \/>\n&#8211; Ki\u1ec3u b\u1ec1 m\u1eb7t: Raised Face (RF) ph\u1ed5 bi\u1ebfn; Flat Face (FF) cho v\u1eadt li\u1ec7u gi\u00f2n\/v\u1ecf b\u01a1m; Ring-Type Joint (RTJ) cho \u00e1p cao.<br \/>\n&#8211; Gio\u0103ng: spiral wound (inox+graphite\/PTFE) cho \u0111a d\u1ee5ng; PTFE cho h\u00f3a ch\u1ea5t; CNAF cho n\u01b0\u1edbc\/kh\u00ed th\u01b0\u1eddng. Ch\u1ecdn theo nhi\u1ec7t \u0111\u1ed9\/\u00e1p l\u1ef1c\/h\u00f3a ch\u1ea5t.<br \/>\n&#8211; Bul\u00f4ng: inox B8 (304) ho\u1eb7c B8M (316). D\u00f9ng h\u1ee3p ch\u1ea5t ch\u1ed1ng k\u1eb9t ren (anti-seize) \u0111\u1ec3 tr\u00e1nh galling inox-inox. Si\u1ebft theo tr\u00ecnh t\u1ef1 sao, theo khuy\u1ebfn c\u00e1o ASME PCC-1.<\/p>\n<h2 id=\"toc-7-kich-co-ap-luc-do-day-cach-dich-giua-cac-he\">K\u00edch c\u1ee1, \u00e1p l\u1ef1c, \u0111\u1ed9 d\u00e0y: c\u00e1ch \u201cd\u1ecbch\u201d gi\u1eefa c\u00e1c h\u1ec7<\/h2>\n<p>&#8211; DN\/NPS: Vi\u1ec7t Nam d\u00f9ng c\u1ea3 DN (mm) v\u00e0 NPS (inch). V\u00ed d\u1ee5 NPS 2 \u2248 DN50.<br \/>\n&#8211; Schedule (\u0111\u1ed9 d\u00e0y): Sch10S (nh\u1eb9), Sch40S (chu\u1ea9n), Sch80S (d\u00e0y). H\u01a1i\/\u00e1p l\u1ef1c cao \u01b0u ti\u00ean Sch40S+.<br \/>\n&#8211; C\u1ea5p \u00e1p:<br \/>\n  &#8211; Class (ASME): Class 150\/300\/600\u2026; kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng.<br \/>\n  &#8211; PN (EN\/ISO): PN10\/16\/25\u2026; con s\u1ed1 PN ~ \u00e1p danh \u0111\u1ecbnh bar \u1edf 20\u00b0C.<br \/>\n  &#8211; JIS K (Nh\u1eadt): 5K\/10K\/16K\/20K; t\u01b0\u01a1ng \u0111\u01b0\u01a1ng x\u1ea5p x\u1ec9 PN t\u01b0\u01a1ng \u1ee9ng nh\u01b0ng c\u1ea7n tra bi\u1ec3u \u00e1p-nhi\u1ec7t c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<br \/>\nKhuy\u1ebfn ngh\u1ecb: Kh\u00f4ng quy \u0111\u1ed5i c\u1ee9ng gi\u1eefa PN v\u00e0 Class. Lu\u00f4n tra bi\u1ec3u \u00e1p-nhi\u1ec7t theo v\u1eadt li\u1ec7u\/b\u1ec1 m\u1eb7t t\u1eeb ti\u00eau chu\u1ea9n ho\u1eb7c catalogue.<\/p>\n<h2 id=\"toc-8-huong-dan-chon-nhanh-cho-du-an\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn nhanh cho d\u1ef1 \u00e1n<\/h2>\n<p>1) X\u00e1c \u0111\u1ecbnh l\u01b0u ch\u1ea5t, nhi\u1ec7t \u0111\u1ed9, \u00e1p l\u1ef1c thi\u1ebft k\u1ebf + \u0103n m\u00f2n (chloride, pH, v\u1ec7 sinh CIP).<br \/>\n2) Ch\u1ecdn v\u1eadt li\u1ec7u: 304L cho \u0111a d\u1ee5ng; 316L cho ven bi\u1ec3n\/h\u00f3a ch\u1ea5t; tr\u00e1nh 201 cho m\u00f4i tr\u01b0\u1eddng \u01b0\u1edbt\/m\u1eb7n.<br \/>\n3) Ch\u1ecdn schedule theo \u00e1p l\u1ef1c v\u00e0 c\u01a1 kh\u00ed; h\u01a1i th\u01b0\u1eddng Sch40S+.<br \/>\n4) X\u00e1c l\u1eadp h\u1ec7 ti\u00eau chu\u1ea9n \u0111\u1ed3ng b\u1ed9: ASME (Class), EN (PN), hay JIS (K).<br \/>\n5) Ch\u1ecdn ki\u1ec3u k\u1ebft n\u1ed1i nh\u1ea5t qu\u00e1n: BW cho \u00e1p cao\/\u0111\u01b0\u1eddng k\u00ednh l\u1edbn; SW\/ren cho DN nh\u1ecf; clamp cho th\u1ef1c ph\u1ea9m.<br \/>\n6) Van:<br \/>\n   &#8211; On\/off nhanh, r\u00f2 r\u1ec9 th\u1ea5p: van bi.<br \/>\n   &#8211; \u0110i\u1ec1u ti\u1ebft: van c\u1ea7u.<br \/>\n   &#8211; DN l\u1edbn, \u00e1p v\u1eeba: van b\u01b0\u1edbm.<br \/>\n   &#8211; H\u01a1i: \u01b0u ti\u00ean van c\u1ea7u\/gate ch\u1ea5t l\u01b0\u1ee3ng, seat ch\u1ecbu nhi\u1ec7t.<br \/>\n7) M\u1eb7t b\u00edch v\u00e0 gio\u0103ng: RF + spiral wound cho \u0111a d\u1ee5ng; PTFE cho h\u00f3a ch\u1ea5t.<br \/>\n8) Y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9: EN 10204 3.1, MTC, PMI, th\u1eed \u00e1p, traceability heat number.<\/p>\n<h2 id=\"toc-9-lap-dat-va-kiem-tra-thuc-hanh-tot-tai-cong-truong\">L\u1eafp \u0111\u1eb7t v\u00e0 ki\u1ec3m tra: th\u1ef1c h\u00e0nh t\u1ed1t t\u1ea1i c\u00f4ng tr\u01b0\u1eddng<\/h2>\n<p>&#8211; C\u1eaft v\u00e0 v\u00e1t m\u00e9p \u0111\u00fang chu\u1ea9n khi h\u00e0n BW; h\u00e0n GTAW v\u1edbi back purge argon cho inox; d\u00f9ng d\u00e2y h\u00e0n ER308L\/ER316L \u0111\u00fang m\u00e1c.<br \/>\n&#8211; T\u1ea9y m\u1ed1i h\u00e0n, th\u1ee5 \u0111\u1ed9ng h\u00f3a (pickling\/passivation) \u0111\u1ec3 kh\u00f4i ph\u1ee5c l\u1edbp th\u1ee5 \u0111\u1ed9ng ch\u1ed1ng \u0103n m\u00f2n.<br \/>\n&#8211; \u0110\u1ee1 \u1ed1ng h\u1ee3p l\u00fd \u0111\u1ec3 tr\u00e1nh \u1ee9ng su\u1ea5t t\u1ea1i co\/t\u00ea\/m\u1eb7t b\u00edch; kho\u1ea3ng c\u00e1ch gi\u00e1 \u0111\u1ee1 theo h\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf (th\u01b0\u1eddng 3\u20135 m v\u1edbi DN50\u2013DN100, t\u00f9y t\u1ea3i\/tr\u1ecdng l\u01b0\u1ee3ng).<br \/>\n&#8211; Si\u1ebft b\u00edch theo tr\u00ecnh t\u1ef1 sao, t\u0103ng m\u00f4-men theo b\u01b0\u1edbc; ki\u1ec3m so\u00e1t b\u00f4i tr\u01a1n ren\/m\u1eb7t \u0111\u1ec7m.<br \/>\n&#8211; B\u1ed1 tr\u00ed b\u1ea7u gi\u1ea3m l\u1ec7ch t\u00e2m \u0111\u00fang chi\u1ec1u t\u1ea1i h\u00fat b\u01a1m (FSU).<br \/>\n&#8211; Th\u1eed k\u00edn\/th\u1eed b\u1ec1n theo ASME B31.3: th\u1ee7y l\u1ef1c 1.5\u00d7 \u00e1p thi\u1ebft k\u1ebf l\u00e0 th\u00f4ng l\u1ec7; ki\u1ec3m tra r\u00f2 r\u1ec9 tr\u01b0\u1edbc khi c\u00e1ch nhi\u1ec7t.<\/p>\n<h2 id=\"toc-10-loi-thuong-gap-va-cach-tranh\">L\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch tr\u00e1nh<\/h2>\n<p>&#8211; Tr\u1ed9n ren NPT v\u00e0 BSPT g\u00e2y r\u00f2 r\u1ec9: x\u00e1c nh\u1eadn chu\u1ea9n ren, d\u00f9ng keo\/b\u0103ng tan ph\u00f9 h\u1ee3p.<br \/>\n&#8211; Galling k\u1eb9t ren inox: d\u00f9ng anti-seize ch\u1ee9a molybdenum, si\u1ebft \u0111\u00fang l\u1ef1c.<br \/>\n&#8211; Ch\u1ecdn sai gio\u0103ng v\u1edbi h\u00f3a ch\u1ea5t\/nhi\u1ec7t: tra t\u01b0\u01a1ng th\u00edch v\u1eadt li\u1ec7u, \u01b0u ti\u00ean PTFE cho h\u00f3a ch\u1ea5t \u0103n m\u00f2n.<br \/>\n&#8211; D\u00f9ng inox 201 cho n\u01b0\u1edbc m\u1eb7n\/ngo\u00e0i tr\u1eddi: d\u1ec5 r\u1ed7; ch\u1ecdn 316L.<br \/>\n&#8211; Kh\u00f4ng purge khi h\u00e0n: m\u1eb7t trong b\u1ecb oxy h\u00f3a, d\u1ec5 \u0103n m\u00f2n khe; lu\u00f4n back purge.<br \/>\n&#8211; K\u1eb9p b\u00edch RF v\u1edbi b\u00edch FF: c\u00f3 th\u1ec3 n\u1ee9t v\u1ecf b\u01a1m\/g\u00e2y r\u00f2; d\u00f9ng \u0111\u00fang c\u1eb7p b\u1ec1 m\u1eb7t.<\/p>\n<h2 id=\"toc-11-vi-du-ung-dung-nhanh\">V\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng nhanh<\/h2>\n<p>&#8211; N\u01b0\u1edbc RO, DN25\u2013DN100: inox 304L\/316L; co\/t\u00ea\/b\u1ea7u gi\u1ea3m BW Sch10S; van bi th\u00e2n CF8M, seat PTFE; b\u00edch Class 150 ho\u1eb7c PN16; gio\u0103ng PTFE.<br \/>\n&#8211; H\u01a1i b\u00e3o h\u00f2a 8 bar, 180\u00b0C, DN50\u2013DN150: 304L Sch40S; co\/t\u00ea BW LR; van c\u1ea7u\/gate Class 300; b\u00edch WN Class 300; gio\u0103ng spiral wound graphite.<br \/>\n&#8211; N\u01b0\u1edbc m\u1eb7n tu\u1ea7n ho\u00e0n ven bi\u1ec3n, DN80\u2013DN200: 316L Sch40S; van b\u01b0\u1edbm th\u00e2n 316L seat EPDM\/VTFE t\u00f9y nhi\u1ec7t; b\u00edch PN16; bul\u00f4ng B8M; b\u1ea3o tr\u00ec r\u1eeda \u0111\u1ecbnh k\u1ef3.<\/p>\n<h2 id=\"toc-12-kiem-soat-chat-luong-va-mua-hang-thong-minh\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 mua h\u00e0ng th\u00f4ng minh<\/h2>\n<p>&#8211; Y\u00eau c\u1ea7u EN 10204 3.1 (MTC), \u0111\u00e1nh d\u1ea5u heat number, m\u00e1c th\u00e9p, ti\u00eau chu\u1ea9n tr\u00ean t\u1eebng chi ti\u1ebft.<br \/>\n&#8211; PMI ki\u1ec3m tra m\u00e1c v\u1eadt li\u1ec7u (\u0111\u1eb7c bi\u1ec7t 304\/316\/201).<br \/>\n&#8211; H\u00ecnh th\u1ee9c: b\u1ec1 m\u1eb7t pickled\/passivated, kh\u00f4ng r\u1ed7\/x\u01b0\u1edbc s\u00e2u, m\u00e9p h\u00e0n\/m\u00e0i \u0111\u1ed3ng \u0111\u1ec1u.<br \/>\n&#8211; V\u1edbi van: ki\u1ec3m tra \u00e1p su\u1ea5t t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t, seat test, m\u1eb7t b\u00edch\/ph\u1edbt \u0111\u1ed3ng b\u1ed9 chu\u1ea9n h\u1ec7 (PN\/Class\/JIS).<br \/>\n&#8211; \u0110\u00f3ng g\u00f3i c\u00f3 n\u1eafp ch\u1ee5p b\u1ea3o v\u1ec7 m\u1eb7t h\u00e0n\/b\u00edch; l\u01b0u kho kh\u00f4 r\u00e1o.<\/p>\n<h2 id=\"toc-13-cau-hoi-thuong-gap\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<p>&#8211; PN16 c\u00f3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng Class 150 kh\u00f4ng? Kh\u00f4ng ho\u00e0n to\u00e0n; c\u1ea3 hai t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng \u00e1p danh \u0111\u1ecbnh th\u1ea5p \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, nh\u01b0ng c\u1ea7n tra bi\u1ec3u \u00e1p-nhi\u1ec7t theo ti\u00eau chu\u1ea9n\/nh\u00e0 s\u1ea3n xu\u1ea5t.<br \/>\n&#8211; D\u00f9ng 304L hay 316L cho ngo\u1ea1i th\u1ea5t ven bi\u1ec3n? 316L an to\u00e0n h\u01a1n nh\u1edd Mo ch\u1ed1ng r\u1ed7 chloride.<br \/>\n&#8211; C\u00f3 th\u1ec3 d\u00f9ng ren thay cho h\u00e0n v\u1edbi h\u01a1i? DN nh\u1ecf v\u00e0 \u00e1p th\u1ea5p c\u00f3 th\u1ec3, nh\u01b0ng h\u00e0n BW\/SW v\u1eabn \u01b0u ti\u00ean cho \u0111\u1ed9 k\u00edn v\u00e0 b\u1ec1n nhi\u1ec7t.<\/p>\n<h2 id=\"toc-14-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/h2>\n<p>&#8211; ASME B16.5 \u2013 Pipe Flanges and Flanged Fittings (\u00e1p-nhi\u1ec7t cho b\u00edch).<br \/>\n&#8211; ASME B16.9 \u2013 Factory-Made Wrought Buttwelding Fittings.<br \/>\n&#8211; ASME B16.11 \u2013 Forged Fittings, Socket-Welding and Threaded.<br \/>\n&#8211; ASME B36.19M \u2013 Stainless Steel Pipe.<br \/>\n&#8211; ASME B31.3 \u2013 Process Piping.<br \/>\n&#8211; ASME PCC-1 \u2013 Guidelines for Pressure Boundary Bolted Flange Joint Assembly.<br \/>\n&#8211; ASTM A182\/A403\/A351 \u2013 V\u1eadt li\u1ec7u r\u00e8n\/\u0111\u00fac cho inox.<br \/>\n&#8211; EN 1092-1 v\u00e0 ISO 7005 \u2013 H\u1ec7 m\u1eb7t b\u00edch PN.<br \/>\n&#8211; ISO 7-1 (BSPT) v\u00e0 ASME B1.20.1 (NPT) \u2013 Ti\u00eau chu\u1ea9n ren.<br \/>\n&#8211; Datasheet inox 304\/316 c\u1ee7a Outokumpu\/ASTM (th\u00e0nh ph\u1ea7n, t\u00ednh n\u0103ng ch\u1ed1ng \u0103n m\u00f2n).<\/p>\n<p>K\u1ebft lu\u1eadn<br \/>\n&#8211; Ch\u00eca kh\u00f3a ch\u1ecdn ph\u1ee5 ki\u1ec7n \u1ed1ng inox c\u00f4ng nghi\u1ec7p l\u00e0 \u0111\u1ed3ng b\u1ed9 ti\u00eau chu\u1ea9n (ASME\/EN\/JIS), ch\u1ecdn m\u00e1c v\u1eadt li\u1ec7u theo m\u00f4i tr\u01b0\u1eddng (304L vs 316L), \u0111\u00fang \u0111\u1ed9 d\u00e0y (Sch), \u0111\u00fang c\u1ea5p \u00e1p (PN\/Class), v\u00e0 l\u1eafp \u0111\u1eb7t theo th\u1ef1c h\u00e0nh t\u1ed1t (h\u00e0n purge, si\u1ebft b\u00edch chu\u1ea9n).<br \/>\n&#8211; Co\/t\u00ea\/b\u1ea7u gi\u1ea3m n\u00ean l\u00e0 BW cho \u00e1p l\u1ef1c\/c\u1ee1 trung-l\u1edbn; van ch\u1ecdn theo ch\u1ee9c n\u0103ng l\u01b0u ch\u1ea5t; m\u1eb7t b\u00edch v\u00e0 gio\u0103ng \u0111\u01b0\u1ee3c ch\u1ecdn theo nhi\u1ec7t-\u00e1p-h\u00f3a ch\u1ea5t.<br \/>\n&#8211; Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng b\u1eb1ng ch\u1ee9ng ch\u1ec9 3.1, PMI v\u00e0 ki\u1ec3m tra ngo\u1ea1i quan gi\u00fap gi\u1ea3m r\u1ee7i ro r\u00f2 r\u1ec9 v\u00e0 \u0103n m\u00f2n s\u1edbm.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n c\u1ea5u h\u00ecnh 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 k\u1ef9 s\u01b0 h\u1ed7 tr\u1ee3 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>H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 co, t\u00ea, b\u1ea7u gi\u1ea3m, van, m\u1eb7t b\u00edch inox c\u00f4ng nghi\u1ec7p: ti\u00eau chu\u1ea9n, v\u1eadt li\u1ec7u, k\u00edch c\u1ee1, \u00e1p l\u1ef1c, l\u1ef1a ch\u1ecdn v\u00e0 l\u1eafp \u0111\u1eb7t an to\u00e0n, t\u1ed1i \u01b0u chi ph\u00ed.<\/p>\n","protected":false},"author":7,"featured_media":1048,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1694","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\/1694","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=1694"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1694\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1048"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}