{"id":713,"date":"2025-06-18T01:53:33","date_gmt":"2025-06-18T01:53:33","guid":{"rendered":"https:\/\/lzbmetal.com\/?p=713"},"modified":"2025-06-23T01:28:13","modified_gmt":"2025-06-23T01:28:13","slug":"thang-ho-ga-composite","status":"publish","type":"post","link":"https:\/\/lzbmetal.com\/vi\/thang-ho-ga-composite\/","title":{"rendered":"Thang leo h\u1ed1 ga composite"},"content":{"rendered":"<h3 class=\"wp-block-heading\">I. C\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u mang t\u00ednh c\u00e1ch m\u1ea1ng &nbsp;<\/h3>\n\n\n\n<p><strong>1. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00f4 song \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- Ma tr\u1eadn Epoxy FRP: Ch\u1ecbu \u0111\u01b0\u1ee3c axit\/ki\u1ec1m m\u1ea1nh (pH 1\u201314), c\u00f3 tu\u1ed5i th\u1ecd \u226550 n\u0103m trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (v\u00ed d\u1ee5: n\u01b0\u1edbc th\u1ea3i h\u00f3a ch\u1ea5t, x\u01b0\u1edfng m\u1ea1 \u0111i\u1ec7n; thang kim lo\u1ea1i b\u1ecb \u0103n m\u00f2n sau 3\u20135 n\u0103m). &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- T\u0103ng c\u01b0\u1eddng Vinyl Ester: Ch\u1ecbu \u0111\u01b0\u1ee3c s\u1ef1 x\u00f3i m\u00f2n c\u1ee7a dung m\u00f4i v\u00e0 h\u01a1i n\u01b0\u1edbc 120\u00b0C, l\u00fd t\u01b0\u1edfng cho \u0111\u01b0\u1eddng \u1ed1ng nhi\u1ec7t v\u00e0 nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- C\u00f4ng th\u1ee9c ch\u1ed1ng \u0111\u00f4ng Polyurethane: Duy tr\u00ec \u0111\u1ed9 linh ho\u1ea1t \u1edf -60\u00b0C, ng\u0103n ng\u1eeba n\u1ee9t gi\u00f2n \u1edf c\u00e1c v\u00f9ng \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu (\u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn t\u1ea1i Mohe, H\u1eafc Long Giang). &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>2. S\u1ee9c m\u1ea1nh c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u1ea1i \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- S\u1ee3i th\u1ee7y tinh li\u00ean t\u1ee5c theo chi\u1ec1u d\u1ecdc (h\u00e0m l\u01b0\u1ee3ng \u226560%): C\u01b0\u1eddng \u0111\u1ed9 ch\u1ecbu k\u00e9o \u2265300 MPa (c\u1ed1t th\u00e9p 2\u00d7), \u0111\u1ed9 c\u1ee9ng u\u1ed1n 200% v\u01b0\u1ee3t ti\u00eau chu\u1ea9n qu\u1ed1c gia. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- Quy tr\u00ecnh \u0111\u00fac m\u1ed9t l\u1ea7n: C\u00e1c thanh ngang v\u00e0 gi\u00e1 \u0111\u1ee1 t\u00edch h\u1ee3p c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o \u0111\u1ee9t m\u1ed1i n\u1ed1i \u226512 kN (3x thang h\u00e0n), lo\u1ea1i b\u1ecf nguy c\u01a1 g\u00e3y. &nbsp;<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">II. Thi\u1ebft k\u1ebf an to\u00e0n v\u1ed1n c\u00f3 &nbsp;<\/h3>\n\n\n\n<p><strong>1. C\u00e1ch nhi\u1ec7t tuy\u1ec7t \u0111\u1ed1i \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- L\u1edbp ph\u1ee7 Epoxy hai l\u1edbp: Ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p \u226510 kV, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n GB\/T 16895.27 \u0111\u1ed1i v\u1edbi h\u1ea7m \u0111i\u1ec7n (ng\u0103n ng\u1eeba h\u01a1n 20 v\u1ee5 \u0111i\u1ec7n gi\u1eadt h\u00e0ng n\u0103m do thang kim lo\u1ea1i). &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- B\u1ec1 m\u1eb7t ch\u1ed1ng tr\u01b0\u1ee3t th\u1ea1ch anh-c\u00e1t: H\u1ec7 s\u1ed1 ma s\u00e1t khi \u01b0\u1edbt \u22650,8, t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng tr\u01b0\u1ee3t l\u00ean 40% khi tr\u1eddi m\u01b0a\/tuy\u1ebft. &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>2. Chi ti\u1ebft c\u00f4ng th\u00e1i h\u1ecdc <\/strong>\u00a0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- B\u1eadc thang si\u00eau r\u1ed9ng 320 mm + R\u00e3nh tho\u00e1t n\u01b0\u1edbc d\u1ea1ng s\u00f3ng: H\u1ed7 tr\u1ee3 to\u00e0n b\u1ed9 ch\u00e2n v\u1edbi kh\u1ea3 n\u0103ng tho\u00e1t b\u00f9n\/n\u01b0\u1edbc nhanh ch\u00f3ng. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;Kho\u1ea3ng c\u00e1ch b\u1eadc t\u1ed1i \u01b0u -300 mm: Gi\u1ea3m m\u1ec7t m\u1ecfi khi leo tr\u00e8o t\u1edbi 50% th\u00f4ng qua t\u1ed1i \u01b0u h\u00f3a c\u01a1 sinh h\u1ecdc. &nbsp;<\/li>\n\n\n\n<li>\u00a0\u00a0\u00a0- \u0110\u00e8n h\u01b0\u1edbng d\u1eabn tho\u00e1t hi\u1ec3m hu\u1ef3nh quang: T\u1ef1 ph\u00e1t s\u00e1ng trong 8 gi\u1edd trong b\u00f3ng t\u1ed1i, \u0111\u1ea3m b\u1ea3o tho\u00e1t hi\u1ec3m an to\u00e0n h\u01a1n. <\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">III. \u01afu \u0111i\u1ec3m c\u1ed1t l\u00f5i &nbsp;<\/h3>\n\n\n\n<p><strong>1. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tr\u1ecdn \u0111\u1eddi \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- V\u1eadt li\u1ec7u ho\u00e0n to\u00e0n tr\u01a1: Ch\u1ecbu \u0111\u01b0\u1ee3c axit m\u1ea1nh (pH 1), ki\u1ec1m (pH 14), h\u01a1i mu\u1ed1i v\u00e0 Cl\u207b (\u226450.000 ppm), v\u1edbi tu\u1ed5i th\u1ecd \u226550 n\u0103m trong c\u00e1c khu v\u1ef1c x\u00e2m nh\u1eadp n\u01b0\u1edbc bi\u1ec3n\/nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t (3\u00d7 th\u00e9p kh\u00f4ng g\u1ec9 304). &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- X\u00e1c nh\u1eadn th\u1ef1c t\u1ebf: Kh\u00f4ng bi\u1ebfn d\u1ea1ng\/\u0103n m\u00f2n sau 12 n\u0103m t\u1ea1i nh\u00e0 m\u00e1y kh\u1eed mu\u1ed1i n\u01b0\u1edbc bi\u1ec3n Thanh \u0110\u1ea3o; ch\u1ecbu \u0111\u01b0\u1ee3c axit sunfuric 98% b\u1eafn v\u00e0o C\u00f4ng vi\u00ean h\u00f3a d\u1ea7u Ninh Ba. &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>2.An to\u00e0n \u0111i\u1ec7n tuy\u1ec7t \u0111\u1ed1i \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;C\u00e1ch \u0111i\u1ec7n -10 kV: \u0110i\u1ec7n tr\u1edf su\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng \u226510\u00b9\u00b2 \u03a9\u00b7cm (GB\/T 1410), lo\u1ea1i b\u1ecf nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt; tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n State Grid DL\/T 1532-2016. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- Ch\u1ee9ng nh\u1eadn ch\u1ed1ng ch\u00e1y n\u1ed5: \u0110\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn ATEX (EU) cho c\u00e1c khu v\u1ef1c h\u00f3a ch\u1ea5t, ng\u0103n ng\u1eeba s\u1ef1 \u0111\u00e1nh l\u1eeda h\u1ed3 quang c\u1ee7a kh\u00ed d\u1ec5 ch\u00e1y. &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>3. Nh\u1eb9 v\u00e0 \u0110\u1ed9 b\u1ec1n cao \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- Tr\u1ecdng l\u01b0\u1ee3ng th\u00e9p 1\/4 (2,5 kg\/m): \u0110\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t th\u1ee7 c\u00f4ng b\u1edfi m\u1ed9t ng\u01b0\u1eddi. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- L\u1eafp r\u00e1p nhanh Snap-Fit: \u226420 gi\u00e2y\/ph\u1ea7n (so v\u1edbi 10 ph\u00fat\/thang h\u00e0n); ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 nghi\u00eang c\u1ee7a t\u01b0\u1eddng \u00b15\u00b0. &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- T\u1ea3i tr\u1ecdng ti\u00eau chu\u1ea9n qu\u00e2n s\u1ef1: Thi\u1ebft k\u1ebf d\u1ea7m ch\u1eef I + l\u00f5i t\u1ed5 ong h\u1ed7 tr\u1ee3 \u2265200 kg\/b\u1eadc (EN 1433 L\u1edbp C); v\u01b0\u1ee3t qua th\u1eed nghi\u1ec7m va \u0111\u1eadp 4000 N (m\u00f4 ph\u1ecfng t\u00ecnh hu\u1ed1ng ng\u01b0\u1eddi l\u1edbn r\u01a1i). &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>4.K\u1ef9 thu\u1eadt an to\u00e0n v\u1ed1n c\u00f3 \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;- Ch\u1ed1ng tr\u01b0\u1ee3t v\u01b0\u1ee3t tr\u1ed9i: B\u1ec1 m\u1eb7t th\u1ea1ch anh-c\u00e1t n\u00f3ng ch\u1ea3y c\u00f3 \u03bc tr\u1ea1ng th\u00e1i \u01b0\u1edbt \u22650,7 (75% t\u1ed1t h\u01a1n kim lo\u1ea1i); chi\u1ec1u r\u1ed9ng b\u1eadc thang \u2265320 mm (cao h\u01a1n ti\u00eau chu\u1ea9n 14%). &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- Ph\u00f2ng ng\u1eeba t\u00e9 ng\u00e3: \u0110i\u1ec3m neo b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 g\u1eafn tr\u00ean c\u00f9ng (t\u1ea3i tr\u1ecdng 150 kg) cho d\u00e2y \u0111ai an to\u00e0n 5 \u0111i\u1ec3m. &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>5. Chi ph\u00ed v\u00f2ng \u0111\u1eddi chi ph\u1ed1i \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00a0\u00a0\u00a0-30% Chi ph\u00ed ban \u0111\u1ea7u th\u1ea5p h\u01a1n. \u00a0<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;- Kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec trong 50 n\u0103m: Kh\u00f4ng c\u1ea7n x\u1eed l\u00fd ch\u1ed1ng \u0103n m\u00f2n; r\u1eeda s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc \u00e1p su\u1ea5t cao. &nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>6. B\u1ec1n v\u1eefng sinh th\u00e1i \u00a0<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&nbsp;&nbsp;&nbsp;-65% Ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n v\u00e0 60% Ti\u00eau th\u1ee5 \u00edt CO\u2082 h\u01a1n so v\u1edbi th\u00e9p (\u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn ISO 14040). &nbsp;<\/li>\n\n\n\n<li>&nbsp;&nbsp;&nbsp;-100% C\u00f3 th\u1ec3 t\u00e1i ch\u1ebf: Kh\u00f4ng g\u00e2y \u00f4 nhi\u1ec5m khi h\u1ebft v\u00f2ng \u0111\u1eddi s\u1eed d\u1ee5ng. &nbsp;<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">IV. C\u00e1c \u1ee9ng d\u1ee5ng ch\u00ednh &nbsp;<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>- Khu v\u1ef1c nguy hi\u1ec3m: Gi\u1ebfng r\u1eeda axit (ch\u1ecbu \u0111\u01b0\u1ee3c 98% H\u2082SO\u2084), h\u1ea7m c\u00e1p 10 kV (\u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn c\u00e1ch \u0111i\u1ec7n). &nbsp;<\/li>\n\n\n\n<li>- D\u1ef1 \u00e1n th\u1ebf k\u1ef7: \u0110\u01b0\u1eddng h\u1ea7m ti\u1ebfp c\u1eadn d\u01b0\u1edbi bi\u1ec3n (ch\u1ecbu \u0111\u01b0\u1ee3c 50.000 ppm Cl\u207b), \u0111\u01b0\u1eddng h\u1ea7m ti\u1ec7n \u00edch nh\u00e0 m\u00e1y \u0111i\u1ec7n h\u1ea1t nh\u00e2n (phi\u00ean b\u1ea3n ch\u1ed1ng b\u1ee9c x\u1ea1). &nbsp;<\/li>\n\n\n\n<li>- C\u01a1 s\u1edf h\u1ea1 t\u1ea7ng th\u00f4ng minh: \u0110\u01b0\u1eddng h\u1ea7m ti\u1ec7n \u00edch c\u00f3 ch\u1ee9c n\u0103ng gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng k\u1ebft c\u1ea5u. &nbsp;<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">V. Ti\u00eau chu\u1ea9n l\u1ef1a ch\u1ecdn quan tr\u1ecdng &nbsp;<\/h3>\n\n\n\n<p>1. Ki\u1ec3m tra \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a v\u1eadt li\u1ec7u &nbsp;<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;- Ph\u00e2n t\u00edch nhi\u1ec7t RequireDSC: \u0110\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 ch\u1ea5t \u0111\u1ed9n t\u00e1i ch\u1ebf (s\u1ea3n ph\u1ea9m k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n 50%). &nbsp;<\/p>\n\n\n\n<p>2. B\u1eb1ng ch\u1ee9ng v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u1ea5u tr\u00fac &nbsp;<\/p>\n\n\n\n<p>\u00a0\u00a0\u00a0- Ki\u1ec3m tra m\u1eb7t c\u1eaft ngang: S\u1ee3i d\u1ecdc ph\u1ea3i li\u00ean t\u1ee5c (s\u1ee3i b\u1ecb c\u1eaft s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng g\u00e3y gi\u00f2n). <\/p>\n\n\n\n<p>3. Ch\u1ee9ng nh\u1eadn b\u1eaft bu\u1ed9c &nbsp;<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;-Trung Qu\u1ed1c: GB 50303-2015 ch\u1ed1ng r\u01a1i + DL\/T 1532-2016 c\u00e1ch \u0111i\u1ec7n. &nbsp;<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;- To\u00e0n c\u1ea7u: \u0110\u1ed9 b\u1ec1n m\u1ed1i n\u1ed1i EN 13101 + An to\u00e0n n\u1ed1i \u0111\u1ea5t IEEE 80. &nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u1ea7n k\u1ebft lu\u1eadn &nbsp;<\/h3>\n\n\n\n<p>Thang h\u1ed1 ga composite \u0111\u1ecbnh ngh\u0129a l\u1ea1i s\u1ef1 an to\u00e0n d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t th\u00f4ng qua kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u0129nh c\u1eedu, c\u00e1ch nhi\u1ec7t an to\u00e0n v\u00e0 b\u1ea3o tr\u00ec th\u00f4ng minh. Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u1ea3i \u01b0u ti\u00ean t\u00ednh li\u00ean t\u1ee5c c\u1ee7a s\u1ee3i v\u00e0 ch\u1ee9ng nh\u1eadn \u0111i\u1ec7n, \u01b0u ti\u00ean c\u00e1c nh\u00e0 cung c\u1ea5p c\u00f3 kinh nghi\u1ec7m v\u1ec1 si\u00eau d\u1ef1 \u00e1n qu\u1ed1c gia. V\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng CFRP trong t\u01b0\u01a1ng lai, t\u1ef7 l\u1ec7 s\u1ee9c m\u1ea1nh tr\u00ean tr\u1ecdng l\u01b0\u1ee3ng s\u1ebd ti\u1ebfn xa h\u01a1n n\u1eefa, m\u1edf ra k\u1ef7 nguy\u00ean kh\u00f4ng r\u1ee7i ro cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng ng\u1ea7m.<\/p>","protected":false},"excerpt":{"rendered":"<p>I. C\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u mang t\u00ednh c\u00e1ch m\u1ea1ng 1. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00f4 song 2. S\u1ee9c m\u1ea1nh k\u1ebft c\u1ea5u \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u1ea1i II. Thi\u1ebft k\u1ebf an to\u00e0n v\u1ed1n c\u00f3 1. C\u00e1ch \u0111i\u1ec7n tuy\u1ec7t \u0111\u1ed1i 2. Chi ti\u1ebft c\u00f4ng th\u00e1i h\u1ecdc III. \u01afu \u0111i\u1ec3m c\u1ed1t l\u00f5i 1. Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n tr\u1ecdn \u0111\u1eddi 2. An to\u00e0n \u0111i\u1ec7n tuy\u1ec7t \u0111\u1ed1i 3. Nh\u1eb9 v\u00e0 \u0111\u1ed9 b\u1ec1n cao 4. K\u1ef9 thu\u1eadt an to\u00e0n v\u1ed1n c\u00f3 5. Chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u01b0\u1ee3t tr\u1ed9i 6. B\u1ec1n v\u1eefng sinh th\u00e1i IV. \u1ee8ng d\u1ee5ng ch\u00ednh V. [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,59,2],"tags":[131,132,127],"class_list":["post-713","post","type-post","status-publish","format-standard","hentry","category-composite-resin-fiber-products","category-ladder-composite-resin-fiber-products","category-products","tag-composite-ladder","tag-composite-manhole-ladder","tag-ladder"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Composite Manhole Climbing Ladder Ladder - LZBMetal Products Co., Ltd<\/title>\n<meta name=\"description\" content=\"Crafted from Glass Fiber Reinforced Plastic (GFRP) or Carbon Fiber Reinforced Polymer (CFRP), the composite manhole climbing ladder is engineered for corrosive and insulated environments such as underground chambers and utility tunnels. 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