Girman Bututu Mai Suna

Menene Girman Bututu Mai Suna?

Girman Bututu Mai Suna(NPS)wani yanki ne na Arewacin Amurka na daidaitattun masu girma dabam don bututu da ake amfani da su don matsananciyar zafi ko babba. Sunan NPS ya dogara ne akan tsarin “Iron Pipe Size” (IPS) na baya.

An kafa wannan tsarin IPS don tsara girman bututu. Girman yana wakiltar kusan diamita na bututu a cikin inci. Bututun IPS 6 ″ shine wanda diamita na ciki yakai kusan inci 6. Masu amfani sun fara kiran bututun kamar 2inch, 4inch, 6inch pipe da sauransu. Don farawa, kowane girman bututu an samar da shi don samun kauri ɗaya, wanda daga baya aka kira shi misali (STD) ko ma'aunin nauyi (STD.WT.). An daidaita diamita na waje na bututu.

Kamar yadda buƙatun masana'antu ke ɗaukar ruwan matsa lamba mafi girma, an kera bututu tare da bango mai kauri, wanda ya zama sananne da ƙarin ƙarfi (XS) ko ƙarin nauyi (XH). Abubuwan buƙatun matsa lamba mafi girma sun ƙaru, tare da bututun bango mai kauri. Saboda haka, an yi bututu tare da ƙarin ƙarfin ninki biyu (XXS) ko bangon ƙarin nauyi (XXH), yayin da daidaitattun diamita na waje ba su canzawa. Lura cewa akan wannan rukunin yanar gizon kawai sharuɗɗanXS&XXSana amfani da su.

Jadawalin Bututu

Don haka, a lokacin IPS kawai ana amfani da bangon bango uku. A cikin Maris 1927, Ƙungiyar Ƙididdiga ta Amirka ta bincika masana'antu kuma ta ƙirƙiri tsarin da ya tsara kauri na bango dangane da ƙananan matakai tsakanin masu girma dabam. Ƙididdigar da aka sani da girman bututu mara kyau ya maye gurbin girman bututun ƙarfe, da jadawalin lokaci (SCH) an ƙirƙira shi ne don tantance kaurin bangon bututu mai ƙima. Ta ƙara lambobin jadawalin zuwa ma'auni na IPS, a yau mun san kewayon kaurin bango, wato:

SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, STD, XS da XXS.

Girman bututu mara kyau (NPS) shi ne mai ƙira mara girman girman bututu. Yana nuna daidaitaccen girman bututu lokacin da takamaiman adadin girman girman ke biye da shi ba tare da alamar inch ba. Alal misali, NPS 6 yana nuna bututu wanda diamita na waje shine 168.3 mm.

NPS yana da alaƙa da alaƙa da diamita na ciki a cikin inci, kuma NPS 12 da ƙaramin bututu suna da diamita na waje fiye da girman mai ƙira. Don NPS 14 kuma ya fi girma, NPS daidai yake da inch 14.

Don NPS da aka ba, diamita na waje yana tsayawa tsayin daka kuma kaurin bango yana ƙaruwa tare da lambar jadawalin mafi girma. Diamita na ciki zai dogara ne akan kaurin bangon bututu da aka ƙayyade ta lambar jadawalin.

Taƙaice:
An ƙayyade girman bututu tare da lambobi guda biyu marasa girma,

• Girman bututu mara kyau (NPS)
• lambar jadawalin (SCH)

kuma alaƙar da ke tsakanin waɗannan lambobi tana ƙayyade diamita na cikin bututu.

Girman Bututun Bakin Karfe wanda ASME B36.19 ya ƙaddara wanda ke rufe diamita na waje da kaurin bangon Jadawalin. Lura cewa kaurin bangon bakin bango zuwa ASME B36.19 duk suna da kari na "S". Girman da ba su da "S" suffix shine ASME B36.10 wanda aka yi niyya don bututun ƙarfe na carbon.

Ƙungiyar Ƙididdiga ta Duniya (ISO) kuma tana amfani da tsarin tare da mai ƙira mara girma.
Sunan diamita (DN) ana amfani dashi a cikin tsarin naúrar awo. Yana nuna daidaitaccen girman bututu lokacin da takamaiman girman girman lambar ke biye da shi ba tare da alamar millimita ba. Misali, DN 80 daidai yake da NPS 3. A ƙasa tebur tare da kwatankwacin girman bututun NPS da DN.

Lura: Don NPS ≥ 4, DN mai alaƙa = 25 an ninka ta lambar NPS.

Kuna yanzu menene "ein zweihunderter Rohr"? Jamusawa suna nufin tare da wannan bututu NPS 8 ko DN 200. A wannan yanayin, Yaren mutanen Holland suna magana game da "8 duimer". Ina matukar sha'awar yadda mutane a wasu ƙasashe ke nuna bututu.

Misalai na ainihin OD da ID

Ainihin diamita na waje

• NPS 1 ainihin OD = 1.5/16 ″ (33.4 mm)
• NPS 2 ainihin OD = 2.3/8 ″ (60.3 mm)
• NPS 3 ainihin OD = 3½" (88.9 mm)
• NPS 4 ainihin OD = 4½" (114.3 mm)
• NPS 12 ainihin OD = 12¾" (323.9 mm)
• NPS 14 ainihin OD = 14 ″ (355.6 mm)

Ainihin diamita na bututu inch 1.

• NPS 1-SCH 40 = OD33,4 mm - WT. 3,38 mm - ID 26,64 mm
• NPS 1-SCH 80 = OD33,4 mm - WT. 4,55 mm - ID 24,30 mm
• NPS 1-SCH 160 = OD33,4 mm - WT. 6,35 mm - ID 20,70 mm

Kamar yadda aka bayyana a sama, babu diamita na ciki da ya dace da gaskiyar 1 ″ (25,4 mm).
An ƙayyade diamita na ciki da kauri daga bango (WT).

Bayanan da kuke buƙatar sani!

Jadawalin 40 da 80 suna gabatowa STD da XS kuma a yawancin lokuta iri ɗaya ne.
Daga NPS 12 da sama da kauri na bango tsakanin jadawalin 40 da STD sun bambanta, daga NPS 10 da sama da kauri na bango tsakanin jadawalin 80 da XS sun bambanta.

Jadawalin 10, 40 da 80 a yawancin lokuta iri ɗaya ne da jadawalin 10S, 40S da 80S.
Amma kula, daga NPS 12 - NPS 22 kaurin bango a wasu lokuta sun bambanta. Bututun da ke da kari "S" suna da a cikin wannan kewayon ƙananan tikitin bango.

ASME B36.19 baya rufe duk girman bututu. Saboda haka, ma'auni na buƙatun ASME B36.10 sun shafi bututun bakin karfe na girma da jadawalin da ASME B36.19 ba ta rufe ba.