ASTM A252 Grade 3 LSAW Steel Bututun Karfe: Ƙarfin Masana'antu & Bayanin Samfura

Me yasa Womic Steel don ASTM A252 Grade 3 Piling Pipe?

●Babban ƙarfin diamita har zuwa 3,500mm (138″) - ya dace da monopiles da manyan tarin ruwa

●Katanga mai nauyi har zuwa 100mm - tana ɗaukar nauyin axial da na gefe mai yawa

●Dogon ƙera tarin har zuwa mita 60 - yana rage haɗin filin da lokacin shigarwa

●Tsaruka da yawa (JCOE, UOE, farantin da aka yi birgima) don samarwa mai inganci

●Ana samun duba na ɓangare na uku (SGS, BV, ABS, DNV)

●Ana samar da bututun mai mai tsawon kilomita 500 a duk duniya

●Farashi mai kyau don manyan ayyukan ababen more rayuwa

Tambayoyin da Ake Yawan Yi:

T: Menene bambanci tsakanin ASTM A252 Grade 3 da API 5L X52 don tara kaya?
A: Aji na 3 yana da ƙarancin ƙarfi (345 MPa idan aka kwatanta da X52's 360 MPa) amma an tsara shi musamman don tuƙin tuƙi. Yana da buƙatun tururi mafi girma da tsawaitawa (minti 20%) kuma yana da haƙuri ga nauyin tasiri yayin tuƙin guduma. Hakanan ana iya amfani da API 5L X52 don tuƙin tuƙi, amma Aji na 3 shine ma'aunin masana'antu don tuƙin tushe a Arewacin Amurka da ayyukan ƙasa da ƙasa da yawa.

T: Za ku iya samar da tarin abubuwa sama da mita 18?
A: Eh. Za mu iya haɗa sassa da yawa na mita 12 ko mita 18 tare don samar da tsayi har zuwa mita 60. Kowace walda mai kewaye tana da 100% UT kuma ana iya duba ta idan an buƙata. Waɗannan dogayen tukwane ana amfani da su ne don monopiles na iska na ƙasashen waje (tsawon mita 30-50).

T: Menene matsakaicin kauri na bango don bututun LSAW na aji 3?
A: Faranti mai birgima guda ɗaya har zuwa 100mm, ɗinki biyu kuma har zuwa 100mm. Don kauri bango sama da 100mm (misali, 120mm), da fatan za a tuntuɓe mu don kimanta aikin musamman. Mun samar da tarin WT 120mm don tushe na musamman na ruwa mai zurfi.

T: Shin waɗannan bututun suna buƙatar gwajin hydrostatic?
A: ASTM A252 ba ya buƙatar gwajin hydrostatic saboda bututun tara ba sa ɗauke da matsi. Duk da haka, idan aikinku yana buƙatar gwajin hydrostatic (misali, don haɗa tarin da jigilar ruwa), za mu iya yin hakan akan ƙarin kuɗi.

T: Wane shafi ne aka ba da shawarar a yi amfani da shi wajen tara ruwa?
A: Ga yanayin ruwan teku, ana amfani da epoxy na kwal (kauri mai girman microns 600-800) ko epoxy na gilashi. Ga yankunan da ake fesawa, muna ba da shawarar FBE ko 3LPE tare da ƙarin juriya ga gogewa. Ga ruwan sabo ko ƙasa, bututun baƙi ko saman da aka shafa mai sau da yawa ya isa.

T: Ta yaya za ku tabbatar da cewa walda sun tsira daga tukin guduma?
A: Muna yin 100% UT na dinkin walda tare da MPI (duba barbashi mai maganadisu) na yatsun walda don gano duk wani fashewar saman. Muna kuma yin gwaje-gwajen lanƙwasa jagora akan samfuran walda don tabbatar da dorewar aiki. Ga manyan tukwane masu tuƙi, za mu iya samar da gwajin tasirin Charpy a 0°C ko ƙasa da haka.

T: Menene lokacin jagora na yau da kullun don bututun tara maki na aji 3?
A: Lokacin da aka saba amfani da shi: Kwanaki 30-45 don diamita ≤ 1,422mm. Ga manyan bututun faranti da aka naɗe (> 1,422mm): Kwanaki 45-60. Ga dogayen tukwane da aka naɗe (har zuwa mita 60): ƙara makonni 2-3 don walda da dubawa.

Bayanin Aiki - Faɗaɗa Tashar Kwantena ta Tashar Jirgin Ruwa ta Houston

Ƙasa:Amurka (Houston, Texas)
Daidaitacce & Matsayi:ASTM A252 Grade 3 (tare da ƙarin tasirin Charpy a 0°C)
Girma da Adadi:

●OD 914mm (36″) × WT 19.0mm – mita 18,000 (kimanin tan 7,600) wanda aka ƙera ta hanyar JCOE

●OD 1,067mm (42″) × WT 22.2mm – mita 9,000 (kimanin tan 4,600) wanda aka ƙera ta hanyar dinkin farantin da aka naɗe shi ɗaya

●OD 1,219mm (48″) × WT 25.4mm – mita 3,500 (kimanin tan 2,500) wanda aka ƙera ta hanyar dinki ɗaya na farantin da aka naɗe (don maɓuɓɓugan ruwa masu zurfi)
Jimilla:Mita 30,500 (kilomita 30.5) na tarin kaya, kimanin tan 14,700

Bayani dalla-dalla:Ƙarshen fili (yanke murabba'i) tare da chamfer, rufin epoxy (microns 500, nau'in epoxy na kwal) don kariyar tsatsa a cikin ruwan tashar jiragen ruwa ta Houston mai launin ruwan kasa. Gwajin lanƙwasa dole ne (babu tsagewa bayan lanƙwasa diamita 1/3). Gwajin lanƙwasa jagora don lanƙwasa walda. 100% UT na dinkin walda tare da tabo 10% RT. MPI na yatsun walda. Tasirin zafi a 0°C (min 20J, 40-60J na yau da kullun). Dubawa na ɓangare na uku ta SGS.

Aikace-aikace:Faɗaɗa Tashar Kwantena ta Bayport a Tashar Jiragen Ruwa ta Houston. Aikin ya ƙunshi gina sabbin ma'ajiyar ruwa guda biyu (jimillar bangon tashar jiragen ruwa ta mita 1,200) tare da wurin adana kwantena a gefen ƙasa. Tushen bututun ƙarfe suna aiki a matsayin harsashin tsarin bene na siminti (tushen ɗaukar kaya a tsaye) da kuma matsayin tarin tallafi na fender (lodawa a gefe). Zurfin ruwa a ma'ajiyar ruwa: mita 16.

Kalubalen Fasaha da Magani:

●Muhalli mai lalata ruwa mai laushi– Tashar Jirgin Ruwa ta Houston tana da yawan sinadarin chloride (10,000-18,000 ppm) da ƙarancin pH (6.5-7.0) saboda kwararar masana'antu. Rufin epoxy na kwal da aka yi amfani da shi a cikin ruwa (microns 600 DFT) tare da layuka biyu: primer (microns 200) + saman shafi (microns 400). Rufin ya wuce gwajin feshin gishiri na awanni 3,000 (ASTM B117) tare da ƙasa da 2mm creep. An gano cutar a lokacin hutu a 3.5kV ba tare da wata matsala ba.

●Babban matsin lamba a cikin yashi mai yawa– Tsarin ƙasa a tashar ya ƙunshi yashi mai yawa mai laushi tare da ƙimar shigarwa ta yau da kullun (SPT) N-ƙimar 30-50. Matsin tuƙi na tuƙi ya kusan kashi 80% na ƙarfin yawan amfanin ƙasa. Womic ta yi gwaje-gwajen lanƙwasa jagora akan takaddun walda (radius mai lanƙwasa 4x kauri, 180°) ba tare da tsagewa ba. Mun kuma samar da MPI na walda a kowane tarin 50 don tabbatar da babu tsagewar yatsa. Ɗan kwangilar tuƙi na abokin ciniki ya ba da rahoton cewa babu fashewar walda yayin shigar da tarin 2,100.

●Dogayen tari na ma'ajiyar ruwa mai zurfi– Mafi zurfin wurin da ake buƙata ya kamata a yi amfani da shi zuwa zurfin mita 32 (mita 20 cikin teku + mita 12 a saman layin laka). Haɗin mita 12 na yau da kullun zai buƙaci haɗin fili guda 3 a kowace tarin. Womic ta samar da haɗin gwiwa mai tsawon mita 18 (dinkin farantin da aka naɗe shi ɗaya) don tarin 1,067mm da 1,219mm, wanda ya rage haɗin fili daga 3 zuwa 2 a kowace tarin (yana adana lokacin walda 35%). Mun kuma samar da tarin 36m don tsarin fender (ba a buƙatar haɗin gwiwa) ta hanyar walda sassan 18m biyu daga ƙarshe zuwa ƙarshe tare da cikakken SAW da 100% UT.

●Taurin tasiri don tukin hunturu– Yanayin zafin hunturu na Houston zai iya raguwa zuwa -5°C. Tuki a ƙananan zafin jiki yana haifar da karyewar karyewa. Motar ta samar da Aji na 3 tare da ƙarin tauri a ƙananan zafin jiki: Tasirin zafi a 0°C min 20J (misali A252 ba ya buƙatar gwajin tasiri). Sakamakon gaske: 45-65J a 0°C, 35-50J a -10°C. Abokin ciniki ya haɗa da wannan a matsayin buƙatar da ba dole ba amma mai amfani.

●Isarwa cikin lokaci-lokaci ta hanyar jigilar kayayyaki– Wurin ginin yana da iyakataccen yanki na ajiye kaya (murabba'in mita 8,000 kacal). Womic ta tsara jigilar kaya guda huɗu (kimanin tan 3,700 kowanne) tsawon watanni 5. Ana jigilar bututu ta jirgin ruwa mai yawan fasinjoji daga Shanghai zuwa Houston, sannan a tara tan 200 a cikin tara duk bayan makonni 2. Ƙungiyar jigilar kayayyaki ta Womic ta haɗu da hukumar tashar jiragen ruwa don ba da fifiko ga sauke kaya da kuma jigilar kaya kai tsaye, ta hanyar guje wa ajiya a tashar jiragen ruwa. Duk jigilar kaya sun isa cikin ± kwana 3 na kwanakin da aka tsara.

●Bin ƙa'ida ga yafewar Sayen Amurka– Aikin tashar jiragen ruwa ta Houston ya buƙaci a yi watsi da ƙarfe na ƙasashen waje saboda samar da ƙarfe a cikin gida na Amurka ba zai iya cika jadawalin ba. Womic ta bayar da cikakkun takardu waɗanda suka haɗa da takaddun shaida na masana'antu, ƙasar asali, da kuma gano kayan aiki. An amince da wannan sassaucin, kuma dukkan tan 14,700 sun amince da Hukumar Kwastam ta Amurka ba tare da ɓata lokaci ba.

● Sakamako:An kammala faɗaɗa tashar jiragen ruwa ta Bayport Container Terminal a kwata na uku na 2024, kafin lokacin da aka tsara. Duk tarin bututun ƙarfe 2,100 sun ci jarrabawar kaya (gwajin nauyi mai tsauri akan kashi 5% na tukwane: daidaitawa ƙasa da 10mm a nauyin ƙira sau 2). Hukumar tashar jiragen ruwa ta ba da rahoton cewa babu wata matsala ta tukwane ko matsalolin rufi. Womic Steel ta sami kyautar "Karin Aiki Mai Kaya" daga babban ɗan kwangila (babban kamfanin injiniyan farar hula na Amurka). Tashar jiragen ruwan yanzu tana aiki, tana kula da TEU miliyan 1.5 a kowace shekara.

Tuntuɓi:
Yanar Gizo: www.womicsteel.com
Imel: sales@womicsteel.com

Waya / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568

Womic Steel – Abokin hulɗarka mai aminci ga tarin bututun ƙarfe na ASTM A252 Grade 3 LSAW don harsashin gada, tarin ruwa, harsashin gini mai zurfi, da kuma bututun gonakin iska na ƙasashen waje a duk duniya.