{"id":1780,"date":"2026-05-23T10:03:00","date_gmt":"2026-05-23T10:03:00","guid":{"rendered":"https:\/\/lzbmetal.com\/?p=1780"},"modified":"2026-05-23T08:08:09","modified_gmt":"2026-05-23T08:08:09","slug":"cach-chon-nap-cong-phu-hop-ma-khong-mac-sai-lam-5-thong-so-ma-moi-nha-quan-ly-thu-mua-can-biet","status":"publish","type":"post","link":"https:\/\/lzbmetal.com\/vi\/cach-chon-nap-cong-phu-hop-ma-khong-mac-sai-lam-5-thong-so-ma-moi-nha-quan-ly-thu-mua-can-biet\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang n\u1eafp c\u1ed1ng m\u00e0 kh\u00f4ng m\u1eafc sai l\u1ea7m? 5 th\u00f4ng s\u1ed1 m\u00e0 m\u1ecdi nh\u00e0 qu\u1ea3n l\u00fd thu mua c\u1ea7n bi\u1ebft!"},"content":{"rendered":"

Trong x\u00e2y d\u1ef1ng c\u00f4ng tr\u00ecnh \u0111\u00f4 th\u1ecb, n\u1eafp c\u1ed1ng c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i li\u00ean quan \u0111\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ee9c t\u1ea1p v\u00e0 h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n. N\u1ebfu ng\u01b0\u1eddi qu\u1ea3n l\u00fd mua s\u1eafm kh\u00f4ng n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 t\u1eeb vi\u1ec7c kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m \u0111\u1ebfn nguy c\u01a1 m\u1ea5t an to\u00e0n tr\u00ean c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng \u0111\u00f4 th\u1ecb. V\u1eady, \u0111\u00e2u l\u00e0 nh\u1eefng ch\u1ec9 s\u1ed1 c\u1ed1t l\u00f5i c\u1ea7n t\u1eadp trung v\u00e0o khi l\u1ef1a ch\u1ecdn n\u1eafp c\u1ed1ng?<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Th\u00f4ng s\u1ed1 1: Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i \u2014 D\u00f2ng m\u00e0u \u0111\u1ecf \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh l\u1ef1a ch\u1ecdn.<\/h3>\n\n\n\n

Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ee7a n\u1eafp c\u1ed1ng ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t. Theo ti\u00eau chu\u1ea9n qu\u1ed1c gia GB\/T 23858 \u201cN\u1eafp c\u1ed1ng\u201d, n\u1eafp c\u1ed1ng \u0111\u01b0\u1ee3c chia th\u00e0nh s\u00e1u c\u1ea5p t\u1ea3i: A15, B125, C250, D400, E600 v\u00e0 F900. \u0110\u1ed1i v\u1edbi m\u1ea1ng l\u01b0\u1edbi \u0111\u01b0\u1eddng \u0111\u00f4 th\u1ecb, kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i c\u1ee7a n\u1eafp c\u1ed1ng kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 400 kN (c\u1ea5p D400), \u0111\u1ed1i v\u1edbi v\u1ec9a h\u00e8 kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 250 kN (c\u1ea5p C250), v\u00e0 \u0111\u1ed1i v\u1edbi kh\u00f4ng gian xanh kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 125 kN (c\u1ea5p B125). N\u1eafp c\u1ed1ng c\u1ea5p D400 ch\u1ecbu \u0111\u01b0\u1ee3c \u226540 t\u1ea5n, th\u00edch h\u1ee3p cho c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng huy\u1ebft m\u1ea1ch \u0111\u00f4 th\u1ecb v\u00e0 \u0111\u01b0\u1eddng cao t\u1ed1c c\u00f3 l\u01b0u l\u01b0\u1ee3ng xe c\u1ed9 l\u1edbn. N\u1eafp c\u1ed1ng c\u1ea5p E600 ch\u1ecbu \u0111\u01b0\u1ee3c \u226560 t\u1ea5n, th\u00edch h\u1ee3p cho c\u00e1c nh\u00e0 ga, b\u1ebfn c\u1ea3ng v\u00e0 \u0111\u01b0\u1eddng b\u0103ng s\u00e2n bay c\u00f3 y\u00eau c\u1ea7u t\u1ea3i tr\u1ecdng c\u1ef1c cao.<\/p>\n\n\n\n

Th\u00f4ng s\u1ed1 2: Lo\u1ea1i v\u1eadt li\u1ec7u \u2014 N\u1ec1n t\u1ea3ng c\u1ee7a hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m.<\/h3>\n\n\n\n

Hai lo\u1ea1i v\u1eadt li\u1ec7u n\u1eafp c\u1ed1ng ph\u1ed5 bi\u1ebfn hi\u1ec7n nay l\u00e0 gang d\u1ebbo v\u00e0 v\u1eadt li\u1ec7u composite. N\u1eafp c\u1ed1ng gang d\u1ebbo c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i cao \u2014 lo\u1ea1i D400 tr\u1edf l\u00ean ph\u00f9 h\u1ee3p v\u1edbi khu v\u1ef1c ch\u1ecbu t\u1ea3i n\u1eb7ng, c\u00f3 tu\u1ed5i th\u1ecd h\u01a1n 30 n\u0103m. N\u1eafp c\u1ed1ng composite nh\u1eb9 (ch\u1ec9 b\u1eb1ng 1\/3 \u0111\u1ebfn 1\/2 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a gang), c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng tr\u1ed9m v\u00e0 ch\u1ed1ng \u0103n m\u00f2n t\u1ef1 nhi\u00ean, ph\u00f9 h\u1ee3p v\u1edbi v\u1ec9a h\u00e8 v\u00e0 kh\u00f4ng gian xanh. Ng\u01b0\u1eddi qu\u1ea3n l\u00fd thu mua c\u1ea7n \u0111\u01b0a ra l\u1ef1a ch\u1ecdn khoa h\u1ecdc d\u1ef1a tr\u00ean c\u00e1c t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf \u2014 l\u00e0n \u0111\u01b0\u1eddng xe c\u1ed9 so v\u1edbi v\u1ec9a h\u00e8, y\u00eau c\u1ea7u ch\u1ed1ng tr\u1ed9m v\u00e0 nhu c\u1ea7u ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n\n\n\n

Th\u00f4ng s\u1ed1 3: Dung sai l\u1eafp gh\u00e9p \u2014 Ch\u00eca kh\u00f3a \u0111\u1ec3 lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng gi\u1eadt c\u1ee5c v\u00e0 ti\u1ebfng \u1ed3n.<\/h3>\n\n\n\n

V\u1ea5n \u0111\u1ec1 ti\u1ebfng \u1ed3n v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng n\u1eafp c\u1ed1ng b\u1ecb rung l\u1eafc th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb khe h\u1edf qu\u00e1 l\u1edbn gi\u1eefa n\u1eafp v\u00e0 khung. Khe h\u1edf n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u1edf m\u1ee9c \u22642 mm, v\u1edbi \u0111\u1ed9 l\u1ec7ch ph\u1eb3ng kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 1,5 mm\/m\u00b2. Ngo\u00e0i ra, c\u00e1c lo\u1ea1i n\u1eafp c\u1ed1ng ch\u1ed1ng l\u00fan th\u01b0\u1eddng c\u00f3 thi\u1ebft b\u1ecb kh\u00f3a ba \u0111i\u1ec3m b\u1eb1ng l\u00f2 xo gi\u00fap c\u1ed1 \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 n\u1eafp v\u00e0 khung, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng rung l\u1eafc v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n.<\/p>\n\n\n\n

Th\u00f4ng s\u1ed1 4: Ph\u00f2ng ng\u1eeba t\u00e9 ng\u00e3 v\u00e0 c\u00e1c thi\u1ebft b\u1ecb an to\u00e0n \u2014 Y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i \u0111\u1ec3 b\u1ea3o v\u1ec7 \u201cs\u1ef1 an to\u00e0n d\u01b0\u1edbi ch\u00e2n\u201d \u0111\u00f4 th\u1ecb.<\/h3>\n\n\n\n

C\u00e1c thi\u1ebft b\u1ecb an to\u00e0n nh\u01b0 l\u01b0\u1edbi ch\u1ed1ng r\u01a1i v\u00e0 t\u1ea5m ch\u1eafn l\u00e0 nh\u1eefng t\u00ednh n\u0103ng ti\u00eau chu\u1ea9n c\u1ee7a n\u1eafp c\u1ed1ng. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c n\u1eafp c\u1ed1ng \u1edf khu v\u1ef1c tr\u0169ng th\u1ea5p v\u00e0 d\u1ec5 b\u1ecb ng\u1eadp l\u1ee5t, c\u1ea7n l\u1eafp \u0111\u1eb7t c\u00e1c thi\u1ebft b\u1ecb ch\u1ed1ng r\u01a1i \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c tai n\u1ea1n r\u01a1i ng\u00e3 trong tr\u01b0\u1eddng h\u1ee3p kh\u1ea9n c\u1ea5p.<\/p>\n\n\n\n

Th\u00f4ng s\u1ed1 5: Th\u00f4ng tin nh\u1eadn d\u1ea1ng \u2014 C\u01a1 s\u1edf quan tr\u1ecdng cho vi\u1ec7c ki\u1ec3m tra nghi\u1ec7m thu.<\/h3>\n\n\n\n

Khi nh\u1eadn h\u00e0ng, h\u00e3y ki\u1ec3m tra xem n\u1eafp c\u1ed1ng c\u00f3 hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c th\u00f4ng tin bao g\u1ed3m: nh\u1eadn d\u1ea1ng ng\u00e0nh, lo\u1ea1i n\u1eafp, c\u1ea5p t\u1ea3i, \u0111\u01b0\u1eddng k\u00ednh, nh\u00e3n hi\u1ec7u nh\u00e0 s\u1ea3n xu\u1ea5t, ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng v\u00e0 n\u0103m s\u1ea3n xu\u1ea5t hay kh\u00f4ng. B\u1ec1 m\u1eb7t ph\u1ea3i nguy\u00ean v\u1eb9n, nh\u1eb5n, \u0111\u1ed3ng nh\u1ea5t v\u1ec1 v\u1eadt li\u1ec7u, c\u00f3 hoa v\u0103n, k\u00fd hi\u1ec7u v\u00e0 ch\u1eef vi\u1ebft r\u00f5 r\u00e0ng, kh\u00f4ng b\u1ecb h\u01b0 h\u1ea1i v\u00e0 kh\u00f4ng c\u00f3 c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 n\u1ee9t ho\u1eb7c r\u1ed7.<\/p>","protected":false},"excerpt":{"rendered":"

Trong x\u00e2y d\u1ef1ng c\u00f4ng tr\u00ecnh \u0111\u00f4 th\u1ecb, n\u1eafp c\u1ed1ng c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i li\u00ean quan \u0111\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ee9c t\u1ea1p v\u00e0 h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n. N\u1ebfu ng\u01b0\u1eddi qu\u1ea3n l\u00fd mua s\u1eafm kh\u00f4ng n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 t\u1eeb vi\u1ec7c kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m \u0111\u1ebfn nguy c\u01a1 m\u1ea5t an to\u00e0n tr\u00ean c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng \u0111\u00f4 th\u1ecb. V\u1eady, \u0111\u00e2u l\u00e0 nh\u1eefng ch\u1ec9 s\u1ed1 c\u1ed1t l\u00f5i c\u1ea7n t\u1eadp trung v\u00e0o khi l\u1ef1a ch\u1ecdn n\u1eafp c\u1ed1ng? Th\u00f4ng s\u1ed1 [\u2026]<\/p>","protected":false},"author":2,"featured_media":1781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[126,153,63],"class_list":["post-1780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ductile-cast-iron","tag-lzb-metal","tag-manhole-cover"],"yoast_head":"\nHow to Select the Right Manhole Cover Without Mistakes? 5 Parameters Every Procurement Manager Must Know! News - LZBMetal Products Co., Ltd<\/title>\n<meta name=\"description\" content=\"In municipal engineering construction, manhole covers may appear simple, but they involve complex technical parameters and standard systems. If procurement managers fail to grasp the key parameters, the consequences range from failed product acceptance to potential safety hazards on urban roads. 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