{"id":1480,"date":"2025-12-01T03:56:00","date_gmt":"2025-12-01T03:56:00","guid":{"rendered":"https:\/\/luzhongbao.com\/?p=1480"},"modified":"2025-12-01T07:17:19","modified_gmt":"2025-12-01T07:17:19","slug":"luoi-chong-roi-bang-gang-luzhongbao-550x10-bao-ve-an-toan-trong-cac-ham-ngam","status":"publish","type":"post","link":"https:\/\/luzhongbao.com\/vi\/luoi-chong-roi-bang-gang-luzhongbao-550x10-bao-ve-an-toan-trong-cac-ham-ngam\/","title":{"rendered":"L\u01b0\u1edbi ch\u1ed1ng r\u01a1i b\u1eb1ng gang Luzhongbao 550\u00d710: Ng\u01b0\u1eddi b\u1ea3o v\u1ec7 an to\u00e0n trong c\u00e1c h\u1ea7m ng\u1ea7m"},"content":{"rendered":"

L\u01b0\u1edbi ch\u1ed1ng r\u01a1i b\u1eb1ng gang Luzhongbao 550\u00d710 l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 an to\u00e0n c\u00f3 \u0111\u1ed9 b\u1ec1n cao, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean d\u1ee5ng cho c\u00e1c k\u00eanh th\u1eb3ng \u0111\u1ee9ng nh\u01b0 h\u1ed1 ga ki\u1ec3m tra ng\u1ea7m \u0111\u00f4 th\u1ecb v\u00e0 h\u1ed1 ga \u0111\u01b0\u1eddng \u1ed1ng. \u0110\u01b0\u1eddng k\u00ednh trong ti\u00eau chu\u1ea9n 550mm ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c l\u1ed7 m\u1edf h\u1ed1 ga \u0111\u00f4 th\u1ecb, v\u00e0 c\u1ea5u tr\u00fac l\u01b0\u1edbi gang d\u00e0y 10mm c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng va \u0111\u1eadp t\u1ee9c th\u1eddi v\u01b0\u1ee3t qu\u00e1 1000kg. S\u1ea3n ph\u1ea9m tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t ti\u00eau chu\u1ea9n qu\u1ed1c gia GB\/T 23858 v\u00e0 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fac m\u1ed9t l\u1ea7n s\u1eed d\u1ee5ng gang d\u1ebbo c\u1ea5p QT500-7. Nh\u1edd c\u00f4ng ngh\u1ec7 l\u00e0m \u0111\u1eb7c l\u01b0\u1edbi v\u00e0nh khuy\u00ean \u0111\u1ed9c \u0111\u00e1o v\u00e0 h\u1ec7 th\u1ed1ng h\u1ed7 tr\u1ee3 g\u00e2n gia c\u1ed1 ba chi\u1ec1u, s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 v\u00e0 kh\u1ea3 n\u0103ng th\u00f4ng gi\u00f3\/truy\u1ec1n \u00e1nh s\u00e1ng trong kh\u00f4ng gian h\u1ea1n ch\u1ebf, ng\u0103n ng\u1eeba hi\u1ec7u qu\u1ea3 t\u00ecnh tr\u1ea1ng r\u01a1i ng\u00e3 c\u1ee7a ng\u01b0\u1eddi ho\u1eb7c v\u1eadt th\u1ec3 nh\u1ecf. S\u1ea3n ph\u1ea9m \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng khu v\u1ef1c c\u00f3 y\u00eau c\u1ea7u an to\u00e0n c\u00f4ng c\u1ed9ng cao nh\u01b0 tr\u01b0\u1eddng h\u1ecdc, qu\u1ea3ng tr\u01b0\u1eddng v\u00e0 khu d\u00e2n c\u01b0 c\u0169.<\/p>\n\n\n\n

So v\u1edbi l\u01b0\u1edbi ch\u1ed1ng r\u01a1i th\u00f4ng th\u01b0\u1eddng, l\u01b0\u1edbi Luzhongbao s\u1edf h\u1eefu nh\u1eefng \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i \u1edf n\u0103m kh\u00eda c\u1ea1nh c\u1ed1t l\u00f5i: Th\u1ee9 nh\u1ea5t, \u0111\u1ed9t ph\u00e1 trong khoa h\u1ecdc v\u1eadt li\u1ec7u, s\u1eed d\u1ee5ng gang d\u1ebbo c\u1ea5p QT500-7, v\u1edbi \u0111\u1ed9 b\u1ec1n k\u00e9o \u2265500 MPa v\u00e0 gi\u1edbi h\u1ea1n ch\u1ea3y \u2265320 MPa, t\u0103ng kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i h\u01a1n 50% so v\u1edbi l\u01b0\u1edbi ch\u1ed1ng r\u01a1i b\u1eb1ng gang th\u00f4ng th\u01b0\u1eddng. Th\u1ee9 hai, thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u \u0111\u1ed9t ph\u00e1: c\u00e1c l\u1ed7 l\u01b0\u1edbi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo d\u1ea1ng ch\u1eef th\u1eadp nghi\u00eang 36\u00b0, v\u1edbi \u0111\u1ed9 m\u1edf \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c trong ph\u1ea1m vi 20mm, ng\u0103n ng\u1eeba k\u1eb9t ch\u00e2n v\u00e0 r\u01a1i c\u00e1c v\u1eadt d\u1ee5ng nh\u01b0 \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. Th\u1ee9 ba, c\u00f4ng ngh\u1ec7 ch\u1ed1ng \u0103n m\u00f2n \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p: l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 ba l\u1edbp (m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng + nh\u1ef1a \u0111\u01b0\u1eddng epoxy + keo nano) gi\u00fap s\u1ea3n ph\u1ea9m c\u00f3 tu\u1ed5i th\u1ecd l\u00ean \u0111\u1ebfn 25 n\u0103m trong m\u00f4i tr\u01b0\u1eddng axit, ki\u1ec1m v\u00e0 \u1ea9m \u01b0\u1edbt, v\u01b0\u1ee3t xa m\u1ee9c trung b\u00ecnh c\u1ee7a ng\u00e0nh l\u00e0 8-10 n\u0103m. Th\u1ee9 t\u01b0, ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t \u0111\u1ed9t ph\u00e1: "H\u1ec7 th\u1ed1ng neo \u0111\u00e0n h\u1ed3i" \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf, kh\u00f4ng c\u1ea7n khoan hay h\u00e0n, cho ph\u00e9p l\u1eafp \u0111\u1eb7t ch\u1ec9 trong 3 ph\u00fat. Th\u1ee9 n\u0103m, v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec th\u00f4ng minh t\u00edch h\u1ee3p: c\u1ea3m bi\u1ebfn \u1ee9ng su\u1ea5t t\u00f9y ch\u1ecdn \u0111\u1ec3 theo d\u00f5i tr\u1ea1ng th\u00e1i t\u1ea3i l\u01b0\u1edbi theo th\u1eddi gian th\u1ef1c, cung c\u1ea5p c\u1ea3nh b\u00e1o s\u1edbm v\u1ec1 c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 an to\u00e0n th\u00f4ng qua n\u1ec1n t\u1ea3ng IoT.<\/p>\n\n\n\n

V\u1eadt li\u1ec7u c\u1ea5p qu\u00e2n s\u1ef1 v\u00e0 khoa h\u1ecdc k\u1ebft c\u1ea5u<\/h3>\n\n\n\n

S\u1eed d\u1ee5ng gang d\u1ebbo QT500-7, v\u1edbi c\u1ea5u tr\u00fac vi m\u00f4 graphite h\u00ecnh c\u1ea7u gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7u qu\u1ea3 s\u1ef1 lan truy\u1ec1n v\u1ebft n\u1ee9t, mang l\u1ea1i cho v\u1eadt li\u1ec7u \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 d\u1ebbo dai cao ngay c\u1ea3 khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng m\u1ea1nh. Th\u00e2n l\u01b0\u1edbi \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p c\u00e1c g\u00e2n gia c\u01b0\u1eddng ph\u00e2n b\u1ed1 theo h\u01b0\u1edbng xuy\u00ean t\u00e2m b\u00ean trong, v\u1edbi c\u00e1c n\u00fat ch\u00ednh s\u1eed d\u1ee5ng thi\u1ebft k\u1ebf h\u1ed7 tr\u1ee3 ch\u00e9o hai chi\u1ec1u. \u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a th\u00f4ng qua ph\u00e2n t\u00edch ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n, kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n th\u00eam 60%. So v\u1edbi th\u00e9p cacbon th\u1ea5p (c\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu k\u00e9o ch\u1ec9 300-400 MPa) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u01b0\u1edbi ch\u1ed1ng r\u01a1i th\u00f4ng th\u01b0\u1eddng, Luzhongbao t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3 ph\u00e2n ph\u1ed1i t\u1ea3i tr\u1ecdng \u1edf c\u00f9ng tr\u1ecdng l\u01b0\u1ee3ng, v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp \u0111o \u0111\u01b0\u1ee3c l\u00e0 150 kJ\/m\u00b2, v\u01b0\u1ee3t ti\u00eau chu\u1ea9n b\u1ea3o v\u1ec7 c\u1ea5p D400.<\/p>\n\n\n\n

H\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 an to\u00e0n to\u00e0n di\u1ec7n<\/h3>\n\n\n\n

\u0110\u1ea3m b\u1ea3o ch\u1ed1ng r\u01a1i: Th\u00e2n l\u01b0\u1edbi \u0111\u00e3 tr\u1ea3i qua th\u1eed nghi\u1ec7m th\u1ea3 v\u1eadt n\u1eb7ng 1,5 t\u1ea5n t\u1eeb \u0111\u1ed9 cao 10 m\u00e9t (m\u00f4 ph\u1ecfng t\u00ecnh hu\u1ed1ng ng\u01b0\u1eddi l\u1edbn r\u01a1i \u1edf t\u1ed1c \u0111\u1ed9 cao), d\u1eabn \u0111\u1ebfn bi\u1ebfn d\u1ea1ng sau va ch\u1ea1m < 3mm, v\u01b0\u1ee3t xa y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n qu\u1ed1c gia l\u00e0 gi\u1edbi h\u1ea1n 5mm.<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf ch\u1ed1ng \u0103n m\u00f2n: V\u1eadt li\u1ec7u n\u1ec1n \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao 290\u00b0C (\u0111\u1ed9 d\u00e0y l\u1edbp k\u1ebdm \u2265100\u03bcm), k\u1ebft h\u1ee3p v\u1edbi l\u1edbp ph\u1ee7 epoxy asphalt v\u00e0 keo nano. S\u1ea3n ph\u1ea9m \u0111\u00e3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra phun mu\u1ed1i 6000 gi\u1edd (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 25 n\u0103m s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng ven bi\u1ec3n), \u0111\u1ea1t ti\u00eau chu\u1ea9n ch\u1ed1ng \u0103n m\u00f2n c\u1ea5p C5 cao nh\u1ea5t.<\/p>\n\n\n\n

C\u01a1 ch\u1ebf ch\u1ed1ng h\u1ecfng: C\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac neo d\u1ef1 ph\u00f2ng; 8 \u0111i\u1ec3m neo ch\u1ecbu tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed9c l\u1eadp v\u00e0 s\u1ef1 h\u1ecfng h\u00f3c c\u1ee7a m\u1ed9t \u0111i\u1ec3m neo duy nh\u1ea5t kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t b\u1ea3o v\u1ec7 t\u1ed5ng th\u1ec3.<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 v\u1eadn h\u00e0nh & b\u1ea3o tr\u00ec thu\u1eadn ti\u1ec7n<\/h3>\n\n\n\n

B\u1ec1 m\u1eb7t l\u01b0\u1edbi \u0111\u01b0\u1ee3c x\u1eed l\u00fd vi m\u1ea1ch \u0111\u1ec3 tr\u00e1nh b\u1ecb c\u1eaft b\u1edfi c\u00e1c c\u1ea1nh s\u1eafc. C\u00e1c l\u1ed7 l\u01b0\u1edbi ti\u00eau chu\u1ea9n 20mm \u0111\u1ea3m b\u1ea3o th\u00f4ng gi\u00f3 v\u00e0 truy\u1ec1n \u00e1nh s\u00e1ng, \u0111\u1ed3ng th\u1eddi ng\u0103n ng\u1eeba tr\u1ebb em b\u1ecb k\u1eb9t \u0111\u1ea7u. H\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t s\u1eed d\u1ee5ng k\u1eb9p \u0111\u01b0\u1ee3c si\u1ebft ch\u1eb7t s\u1eb5n m\u1ed9t c\u00e1ch s\u00e1ng t\u1ea1o, c\u00f3 th\u1ec3 g\u1eafn tr\u1ef1c ti\u1ebfp v\u00e0o th\u00e0nh tr\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n d\u1ee5ng c\u1ee5 chuy\u00ean d\u1ee5ng, h\u1ed7 tr\u1ee3 h\u01a1n 50 l\u1ea7n l\u1eafp \u0111\u1eb7t v\u00e0 th\u00e1o d\u1ee1 l\u1eb7p l\u1ea1i m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng. V\u1ec1 v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec, h\u1ec7 th\u1ed1ng t\u00edch h\u1ee3p ID \u0111i\u1ec7n t\u1eed RFID; vi\u1ec7c qu\u00e9t m\u00e3 cho ph\u00e9p truy c\u1eadp th\u00f4ng tin s\u1ea3n xu\u1ea5t, h\u1ed3 s\u01a1 l\u1eafp \u0111\u1eb7t v\u00e0 d\u1eef li\u1ec7u ki\u1ec3m tra, gi\u00fap gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed qu\u1ea3n l\u00fd \u0111\u00f4 th\u1ecb.<\/p>\n\n\n\n

Kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi t\u00ecnh hu\u1ed1ng v\u00e0 ph\u1ea3n \u1ee9ng nhanh<\/h3>\n\n\n\n

Ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 s\u00e2u gi\u1ebfng kh\u00e1c nhau (2-15 m\u00e9t), ch\u00fang t\u00f4i cung c\u1ea5p m\u1ed9t lo\u1ea1t s\u1ea3n ph\u1ea9m c\u00f3 \u0111\u1ed9 d\u1ed1c (lo\u1ea1i Ti\u00eau chu\u1ea9n \/ Gia c\u1ed1 \/ T\u00f9y ch\u1ec9nh). H\u1ed7 tr\u1ee3 giao h\u00e0ng kh\u1ea9n c\u1ea5p trong v\u00f2ng 72 gi\u1edd, v\u1edbi n\u0103ng l\u1ef1c s\u1ea3n xu\u1ea5t \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh, \u0111\u00e1p \u1ee9ng c\u00e1c t\u00ecnh hu\u1ed1ng \u0111\u1eb7c bi\u1ec7t nh\u01b0 gi\u1ebfng m\u1edf kh\u00f4ng theo ti\u00eau chu\u1ea9n v\u00e0 gi\u1ebfng nghi\u00eang. S\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng th\u00e0nh c\u00f4ng t\u1ea1i h\u01a1n 300 d\u1ef1 \u00e1n \u0111\u00f4 th\u1ecb tr\u00ean to\u00e0n qu\u1ed1c, bao g\u1ed3m c\u00e1c d\u1ef1 \u00e1n tr\u1ecdng \u0111i\u1ec3m nh\u01b0 c\u1ea3i t\u1ea1o gi\u1ebfng th\u00f4ng gi\u00f3 t\u00e0u \u0111i\u1ec7n ng\u1ea7m B\u1eafc Kinh v\u00e0 c\u00e1c d\u1ef1 \u00e1n c\u1ea3i t\u1ea1o to\u00e0n di\u1ec7n khu d\u00e2n c\u01b0 c\u1ed5 Th\u01b0\u1ee3ng H\u1ea3i, t\u00edch l\u0169y ng\u0103n ch\u1eb7n h\u01a1n 200 v\u1ee5 tai n\u1ea1n r\u01a1i ng\u00e3 v\u00e0 duy tr\u00ec th\u00e0nh t\u00edch kh\u00f4ng tai n\u1ea1n.<\/p>\n\n\n\n

L\u1ee3i th\u1ebf v\u1ec1 chi ph\u00ed v\u00f2ng \u0111\u1eddi \u0111\u1ea7y \u0111\u1ee7<\/h3>\n\n\n\n

M\u1eb7c d\u00f9 gi\u00e1 th\u00e0nh \u0111\u01a1n v\u1ecb cao h\u01a1n 15%-20% so v\u1edbi l\u01b0\u1edbi ch\u1ed1ng r\u01a1i th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng tu\u1ed5i th\u1ecd c\u1ef1c k\u1ef3 d\u00e0i, l\u00ean \u0111\u1ebfn 25 n\u0103m (s\u1ea3n ph\u1ea9m th\u00f4ng th\u01b0\u1eddng ch\u1ec9 c\u1ea7n thay th\u1ebf 2-3 l\u1ea7n) v\u00e0 \u0111\u1eb7c t\u00ednh kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec, gi\u00fap gi\u1ea3m h\u01a1n 40% t\u1ed5ng chi ph\u00ed v\u00f2ng \u0111\u1eddi. K\u1ebft h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c blockchain, d\u1eef li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng t\u1eeb m\u1ed7i b\u01b0\u1edbc \u0111\u01b0\u1ee3c ghi l\u1ea1i tr\u00ean chu\u1ed7i theo th\u1eddi gian th\u1ef1c.<\/p>","protected":false},"excerpt":{"rendered":"

L\u01b0\u1edbi ch\u1ed1ng r\u01a1i b\u1eb1ng gang Luzhongbao 550\u00d710 l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 an to\u00e0n c\u01b0\u1eddng \u0111\u1ed9 cao \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c k\u00eanh th\u1eb3ng \u0111\u1ee9ng nh\u01b0 gi\u1ebfng ki\u1ec3m tra ng\u1ea7m \u0111\u00f4 th\u1ecb v\u00e0 gi\u1ebfng \u0111\u01b0\u1eddng \u1ed1ng. \u0110\u01b0\u1eddng k\u00ednh trong ti\u00eau chu\u1ea9n 550mm ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c mi\u1ec7ng gi\u1ebfng \u0111\u00f4 th\u1ecb, v\u00e0 c\u1ea5u tr\u00fac l\u01b0\u1edbi gang d\u00e0y 10mm c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng va \u0111\u1eadp t\u1ee9c th\u1eddi v\u01b0\u1ee3t qu\u00e1 1000kg. S\u1ea3n ph\u1ea9m tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,2,8],"tags":[126,114,63],"class_list":["post-1480","post","type-post","status-publish","format-standard","hentry","category-ductile-cast-iron-products","category-products","category-round-manhole-cover","tag-ductile-cast-iron","tag-luzhongbao","tag-manhole-cover"],"yoast_head":"\nLuzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd<\/title>\n<meta name=\"description\" content=\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. Its standard inner diameter of 550mm fits most municipal shaft openings, and the 10mm thickened cast iron mesh structure can withstand instantaneous impact loads exceeding 1000kg. The product strictly complies with the GB\/T 23858 national standard and is manufactured through one-time casting using QT500-7 grade ductile iron. Through unique annular grid densification technology and a three-dimensional reinforcement rib support system, it achieves a balance between protection strength and ventilation\/light transmission within a limited space, effectively preventing accidental falls of personnel or small objects. It is particularly suitable for areas with high public safety requirements such as schools, plazas, and old residential communities.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/luzhongbao.com\/vi\/luoi-chong-roi-bang-gang-luzhongbao-550x10-bao-ve-an-toan-trong-cac-ham-ngam\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd\" \/>\n<meta property=\"og:description\" content=\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. Its standard inner diameter of 550mm fits most municipal shaft openings, and the 10mm thickened cast iron mesh structure can withstand instantaneous impact loads exceeding 1000kg. The product strictly complies with the GB\/T 23858 national standard and is manufactured through one-time casting using QT500-7 grade ductile iron. Through unique annular grid densification technology and a three-dimensional reinforcement rib support system, it achieves a balance between protection strength and ventilation\/light transmission within a limited space, effectively preventing accidental falls of personnel or small objects. It is particularly suitable for areas with high public safety requirements such as schools, plazas, and old residential communities.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/luzhongbao.com\/vi\/luoi-chong-roi-bang-gang-luzhongbao-550x10-bao-ve-an-toan-trong-cac-ham-ngam\/\" \/>\n<meta property=\"og:site_name\" content=\"Hubei Luzhongbao Metal Products Co., Ltd\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-01T03:56:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-01T07:17:19+00:00\" \/>\n<meta name=\"author\" content=\"luzhongbao\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Levi_Luzhongbao\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"luzhongbao\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\"},\"author\":{\"name\":\"luzhongbao\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#\\\/schema\\\/person\\\/e22c08e75b650a9d574f5aeabb3db2cf\"},\"headline\":\"Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net: The Safety Guardian in Underground Shafts\",\"datePublished\":\"2025-12-01T03:56:00+00:00\",\"dateModified\":\"2025-12-01T07:17:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\"},\"wordCount\":748,\"commentCount\":0,\"keywords\":[\"Ductile Cast Iron\",\"Luzhongbao\",\"Manhole Cover\"],\"articleSection\":[\"Ductile Cast Iron Products\",\"Products\",\"Round Manhole Cover\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\",\"url\":\"https:\\\/\\\/luzhongbao.com\\\/luzhongbao-550x10-cast-iron-anti-falling-net-the-safety-guardian-in-underground-shafts\\\/\",\"name\":\"Luzhongbao\u00a0550\u00d710 Cast Iron Anti-Falling Net - Manhole Cover - Hubei Luzhongbao Metal Products Co., Ltd\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#website\"},\"datePublished\":\"2025-12-01T03:56:00+00:00\",\"dateModified\":\"2025-12-01T07:17:19+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/luzhongbao.com\\\/#\\\/schema\\\/person\\\/e22c08e75b650a9d574f5aeabb3db2cf\"},\"description\":\"The Luzhongbao\u00a0550\u00d710 cast iron anti-falling net is a high-strength safety protection device specifically designed for vertical channels such as urban underground inspection shafts and pipeline shafts. 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