ASTM A252 Grade 2 LSAW Steel Bututu: Ƙarfin Masana'antu & Bayanin Samfura

Me yasa Womic Steel don A252 Grade 2 Piling?

●Babban ƙarfin diamita har zuwa 3,000mm (120″)

●Katangar mai nauyi har zuwa 80mm

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

●Mai sauƙin amfani ga manyan ayyukan samar da ababen more rayuwa

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

Tambayoyin da Ake Yawan Yi:

T: Menene bambanci tsakanin ASTM A252 Grade 2 da Grade 3 don tattarawa?
A: Aji na 3 yana da ƙarfi mafi girma (345 MPa vs 240 MPa yawan amfanin ƙasa) kuma ana amfani da shi don zurfafa tushe ko buƙatun kaya mafi girma. Aji na 2 ya fi araha kuma ya isa ga yawancin aikace-aikacen tushe gabaɗaya (gadaje, gine-gine, tashoshin jiragen ruwa). Zaɓi Aji na 2 don kayan aiki na yau da kullun, Aji na 3 don kayan aiki masu nauyi ko tuƙi mai zurfi.

T: Shin kuna samar da bututun A252 Grade 2 tare da rufin galvanized?
A: Eh. Muna bayar da galvanizing mai zafi ga ASTM A123. Tsawon da za a iya amfani da shi wajen yin galvanizing shine mita 12.5. Ga masu tsayin daka, muna ba da shawarar a yi amfani da murfin epoxy ko kuma murfin bituminous.

T: Menene matsakaicin tsawon da za ku iya samarwa don bututun tara maki na Grade 2?
A: Tsawon sashe ɗaya shine 18m (JCOE) ko 24m (UOE). Don tsayi har zuwa 60m, muna haɗa sassa da yawa daga ƙarshe zuwa ƙarshe tare da cikakken walda mai kewaye da SAW (an duba 100% UT). Wannan abu ne da ya zama ruwan dare ga monopiles na iska na ƙasashen waje.

T: Shin ASTM A252 yana buƙatar gwajin hydrostatic?
A: A'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 cikin ruwan gishiri?
A: Don nutsewa cikin ruwan teku, ana ba da shawarar amfani da epoxy na kwal (microns 600-800) ko epoxy na gilashi. Ga yankunan da ake fesawa, muna ba da shawarar amfani da FBE ko kuma shafa epoxy mai kauri. Ga ruwan da ke da ruwa 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 gwajin lanƙwasa (wajibi) da gwajin lanƙwasa mai jagora akan samfuran walda. Ga manyan tukwane masu tuƙi, muna kuma yin 100% UT na dinkin walda da MPI na yatsun walda. Hakanan zamu iya samar da gwajin tasirin Charpy a 0°C ko ƙasa da haka idan an ƙayyade.

T: Menene lokacin jagora na yau da kullun don bututun tara maki na aji na 2?
A: Lokacin da aka saba amfani da shi: Kwanaki 25-35 don diamita ≤ 1,422mm. Don babban farantin da aka naɗe (> 1,422mm): Kwanaki 35-50. Don dogayen tukwane da aka haɗa (har zuwa mita 60): ƙara makonni 2.

Bayanin Aiki - Faɗaɗa Tashar Kwantena ta Rotterdam (Netherlands)

Ƙasa:Netherlands (Rotterdam, Maasvlakte 2)
Daidaitacce & Matsayi:ASTM A252 Grade 2 (tare da ƙarin tasirin Charpy a 0°C)
Girma da Adadi:

●OD 610mm (24″) × WT 12.5mm – mita 24,000 (kimanin tan 4,500) wanda aka ƙera ta hanyar tsarin UOE

●OD 813mm (32″) × WT 16.0mm – mita 12,000 (kimanin tan 3,500) wanda aka ƙera ta hanyar JCOE

●OD 1,016mm (40″) × WT 20.0mm – mita 6,000 (kimanin tan 2,800) wanda aka ƙera ta hanyar dinkin farantin da aka naɗe shi ɗaya
Jimilla:Mita 42,000 (kilomita 42), kimanin tan 10,800

Bayani dalla-dalla:Ƙarshen da ba a yanke ba (yanke murabba'i), murfin kwal na epoxy (microns 800), gwajin lanƙwasa (babu tsagewa a faɗin faɗin diamita 1/3). Gwajin lanƙwasa da aka jagoranta don daidaita walda. 100% UT na dinkin walda. Tasirin zafi a 0°C (minti 27J, an cimma 50-80J). Daidaito ≤ 0.2%. Binciken ɓangare na uku ta SGS Netherlands.

Aikace-aikace:Faɗaɗa tashar kwantena a Maasvlakte 2, Tashar Jiragen Ruwa ta Rotterdam. Tushen bututun ƙarfe suna aiki a matsayin tushe ga bangon tashar jiragen ruwa (tushen ɗaukar kaya a tsaye) da kuma tudun dolphin (jigilar kaya a gefe). Zurfin ruwa a wurin da za a iya hawa: mita 18. Ƙasa ta ƙunshi yashi da yadudduka masu laushi na yumbu.

Kalubalen Fasaha da Magani:

●Kariyar lalata muhallin bakin teku– Nutsewa cikin ruwan gishiri da kuma yankin fesawa yana buƙatar rufin da ya daɗe. An yi amfani da sinadarin coal tar epoxy (microns 800 DFT) tare da layuka biyu. An yi amfani da fenti mai tsawon sa'o'i 3,000 na gwajin fesa gishiri (ASTM B117) tare da ratsawa ƙasa da 2mm daga scribe. Ganowar lokacin hutu a 4kV ba tare da wata matsala ba.

●Dogayen tuddai don ma'ajiyar ruwa mai zurfi– Tsawon tarin da ake buƙata na mita 28 (mita 18 a cikin teku + mita 10 a sama da layin laka). Haɗin mitoci 12 na yau da kullun zai buƙaci haɗin fili guda 3. Womic ta samar da haɗin gwiwa mai tsayi mita 18 (faranti mai birgima) don tarin mitoci 1,016mm, wanda ya rage haɗin fili daga 3 zuwa 2 a kowace tarin. Don mahimman ginshiƙan da aka sanya, mun samar da ginshiƙai masu tsayi mita 28 ta hanyar walda sassa biyu masu mita 14 (an duba UT 100%).

●Babban matsin lamba a cikin yashi mai yawa– Tsarin ƙasa ya haɗa da yadudduka masu yawa na yashi tare da ƙimar SPT N na 40-60. Matsin tuƙi na tuƙi ya kusan kashi 70% na ƙarfin yawan amfanin ƙasa. Womic ta yi gwaje-gwajen lanƙwasa da aka jagoranta (radius na lanƙwasa 4t, 180°) ba tare da tsagewa ba. Samfuran gwajin lanƙwasa sun nuna babu tsagewa bayan lanƙwasa diamita na 1/2. Abokin ciniki ya ba da rahoton cewa babu gazawar walda yayin tuƙin tuƙi na tuƙa tuƙa tuƙa 3,200.

●Taurin tasiri don shigarwar hunturu– Yanayin sanyi na hunturu na Rotterdam na iya raguwa zuwa -5°C. Womic ta samar da ingantaccen ƙarfin zafin jiki na aji na 2 (Charpy a 0°C min 27J, ya kai 50-80J). ASTM A252 ba ta buƙatar wannan ba amma abokin ciniki ya ƙara shi a matsayin rigakafin.

●Lantarki zuwa Maasvlakte– An aika bututu daga Shanghai zuwa Rotterdam ta jirgin ruwa mai yawan fashewa (kwanaki 35). Saboda ƙarancin wurin ajiye kaya a tashar, Womic ta tsara jigilar kaya sau uku a cikin watanni 4. An daidaita kowace jigilar kaya tare da jadawalin tuki na ɗan kwangilar. Duk tan 10,800 an kawo su akan lokaci.

● Sakamako:An kammala faɗaɗa tashar a kwata na uku na shekarar 2024. Duk tarin bututun 3,200 sun ci jarrabawar ɗaukar nauyi mai ƙarfi (PDA) tare da ƙarfin ɗaukar kaya fiye da buƙatun ƙira. Abokin ciniki ya ce: "Ingancin bututun Womic da amincin isar da shi sun yi kyau sosai." Womic Steel yanzu ita ce mai samar da kayayyaki da aka amince da su don ayyukan tashar jiragen ruwa ta Rotterdam na gaba.

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 2 LSAW don harsashin gada, tarin tashar jiragen ruwa, gina harsashi mai zurfi, da ayyukan ruwa a duk duniya.