GB/T 3091 "Welded karfe bututu don low matsa lamba ruwa sufuri" (2015 version na misali version) da aka amince da National Standardization kwamitin kuma bisa hukuma fito, tun Yuni 01, 2016 m aiwatar;A lokaci guda, ainihin sigar GB/T 3091-2008 ba ta da inganci a hukumance!
Fassarar muhimman tanade-tanade na sabon Matsayin Ƙasa:
1. Galvanized nauyi - "Layin ƙasa"
A cikin sabon ma'auni na ƙasa, akan ma'aunin nauyi na zinc Layer na bututun ƙarfe na galvanized a karon farko an gabatar da "buƙatun layin ƙasa"!Wato: a cikin tsohuwar sigar ma'auni kawai "sharuɗɗan shawarwari" akan haɓaka "karfe bututu na ciki da na waje galvanized Layer naúrar yanki jimlar nauyi bai kamata ya zama ƙasa da 300g/m²" na wajibi daidaitattun buƙatun ba.
A sakamakon haka, matsakaicin rayuwar bututun karfe yana ƙara da akalla 30% !!
2. Ƙarshen bututu
Bututun ƙarfe tare da diamita na waje wanda bai wuce 114.3mm (inci 4 ko ƙasa da haka) yakamata ya zama lebur na inji (ba tare da burrs a ƙarshen ba).
3. Gyara walda na lahani
Bayan sake fasalin sabon ma'auni, an canza gyaran gyare-gyare zuwa: madaidaiciyar bututun ƙarfe na lantarki mai walƙiya tare da diamita na waje ƙasa da 219.1mm ba a ba da izinin gyara walda ba.
Kwatanta: GB/T3091-2008 ya nuna cewa "ba a yarda da bututun ƙarfe tare da diamita na waje ba fiye da 114.3mm ba don gyara walƙiya, bututun ƙarfe tare da diamita na waje ba kasa da 114.3mm ba, zai iya gyara lahani a gindin karfe da walda."
4. Kaurin bango
Sabon ma'auni yana ƙunshe da ƙaramin ƙimar kauri na bangon bango na bututun ƙarfe, wato, Table 1 "Diamita mara iyaka, diamita na waje, kauri mara kyau na bango da rashin daidaituwa na bututun ƙarfe tare da diamita na waje wanda bai wuce 219.1mm ba" an ƙara, wanda ke ba da tushen kai tsaye don ƙira da zaɓin kayan aikin sassan ƙirar injiniya.
Ø Ba a yarda da bututun ƙarfe tare da kaurin bango mara ƙima ƙasa da ** ƙananan ba a yarda ya yi daidaitattun GB/T3091-2015 !!
5. Alamar bututun ƙarfe
Sabon ma'aunin ya ce: “Alala alamar bututun ƙarfe za ta haɗa da aƙalla masu biyowa: sunan masana'anta ko alamar kasuwanci, madaidaicin lambar samfur, lambar alamar ƙarfe, ƙayyadaddun samfur da lambar tantancewa."
Alamar bututun ƙarfe ta ƙunshi alamar samfur da lambar jikin bututu.Idan ɗaya daga cikin bayanan da ke sama ya ɓace, haramun ne.
Lokacin aikawa: Jul-09-2022