API 5L X65 PSL2 Sabis Mai Tsami LSAW Bututun Karfe: Ƙarfin Masana'antu & Bayanin Samfura

Me yasa Womic Steel don Sabis na Sour X65?

● Tanderun PWHT mai keɓewa (tsawon mita 12) tare da daidaitaccen sarrafa zafin jiki (590°C ± 10°C)

● Gwajin HIC da SSC na cikin gida (dakin gwaje-gwajen da CNAS ta amince da su)

● Farantin da aka yi da mo-alloy don ingantaccen juriya ga SSC

● Tsarin UOE don rage damuwa da ya rage (an fi so ga zurfin ruwan tsami)

● An samu gwajin da aka yi wa mutum na uku (SGS, BV, TÜV, DNV)

● Sama da kilomita 300 na bututun X65 masu aiki da tsami da ake samarwa a duk duniya

Tambayoyin da Ake Yawan Yi:

T: Menene bambanci tsakanin sabis ɗin X52 sour da X65 sour?
A: Sabis na tsami na X65 yana da matuƙar buƙata. X65 yana buƙatar ƙarfi mai yawa (450 vs 360 MPa) yayin da yake riƙe da iyaka iri ɗaya ko mafi tsauri (≤ 85 HRB). Wannan yana buƙatar ƙarin Mo (0.15-0.25%), sarrafa CEV mai tsauri (≤ 0.38% vs ≤ 0.40%), kuma sau da yawa yana rage zafin PWHT (590°C vs 600°C) don guje wa asarar ƙarfi. Yawanci ana ƙayyade X65 don manyan bututun matsi (> 10 MPa) da aikace-aikacen ruwa mai zurfi a teku.

T: Shin PWHT wajibi ne ga dukkan bututun X65 masu aiki da tsami ba tare da la'akari da kauri bango ba?
A: Eh, bisa ga NACE MR0175 da duk manyan ƙayyadaddun bayanai na masu aiki. Ko da ga bututun WT 6.4mm, ana buƙatar PWHT don cimma tauri ≤ 85 HRB da kuma rage damuwa da ta rage. Womic yana amfani da PWHT ga 100% na bututun X65 masu aiki da tsami.

T: Menene sharuɗɗan karɓar HIC na yau da kullun don sabis na X65 mai tsami?
A: NACE TM0284 yana ba da damar CLR ≤ 5%, CTR ≤ 1.5%, CSR ≤ 0.5%. Duk da haka, yawancin ayyukan ruwa mai zurfi da inganci suna buƙatar CLR = 0% (babu fashewa). Faranti na sulfur na Womic (S ≤ 0.0015%) da maganin calcium suna cimma CLR 0% akai-akai.

T: Za a iya amfani da bututun mai na X65 a yanayin arctic ko yanayin zafi mai ƙarancin zafi?
A: Eh, tare da ƙarin gwajin tasirin Charpy mai ƙarancin zafin jiki. Womic na iya samar da sabis na tsami na X65 tare da gwajin tasiri a -20°C, -40°C, ko -46°C (minti 27J). Don sabis na tsami na arctic, muna kuma samar da DWTT (≥ 85% yankin yankewa a zafin gwaji). Lura cewa sabis na ƙarancin zafin jiki da tsami tare suna buƙatar ƙirar ƙarfe mai kyau (ƙarin Ni, ƙarancin CEV). Da fatan za a samar da zafin aikin ku da matsin lamba na ɗan lokaci na H₂S don kimanta dacewa.

T: Menene matsakaicin matsin lamba na H₂S don aikin X65 mai tsami?
A: Dangane da NACE MR0175, X65 ya dace da amfani da tsami har zuwa 0.3 psi (0.02 bar) H₂S matsin lamba na ɓangare. Don ƙarin matsin lamba na ɓangare (misali, 0.5-1.0 psi), ana buƙatar ƙarin cancanta (HIC tare da ƙarancin pH, SSC a mafi girman damuwa). Womic ta cancanci X65 don matsin lamba na ɓangare na H₂S har zuwa mashaya 1.0 don takamaiman ayyuka. Da fatan za a raba yanayin aikin ku.

T: Menene lokacin jagora na yau da kullun don sabis na ruwan tsami na X65 LSAW?
A: Kwanaki 80-120, ya danganta da samuwar faranti masu ɗauke da sinadarin Mo-alloyed (lokacin jagora makonni 8-12) da gwajin HIC/SSC (makonni 4-6). Umarnin gaggawa (kwanaki 60-90) yana yiwuwa idan faranti suna cikin kaya. Gwajin da aka yi wa shaida na ɓangare na uku yana ƙara makonni 1-2.

T: Shin kuna ba da gwajin CTOD ga na'urorin X65 masu tsami a bakin teku?
A: Eh. Muna yin gwajin CTOD (Crack Tip Opening Displacement) bisa ga BS 7448 ko ASTM E1820 a yanayin zafi da aka ƙayyade (yawanci -20°C ko -46°C). Mafi ƙarancin ƙimar CTOD: ƙarfe mai walda ≥ 0.25mm, HAZ ≥ 0.30mm. Mun samar da bututun tsami na X65 da aka gwada ta CTOD ga ayyukan ruwa mai zurfi a Tekun Arewa da Tekun Mexico.

Nassoshin Aikin-Bututun Iskar Gas na Arewa maso Yamma (Ostiraliya)

Ƙasa:Ostiraliya (Yammacin Ostiraliya, North West Shelf)
Daidaitacce & Matsayi:API 5L X65 PSL2 tare da ƙarin sabis na tsami kamar yadda NACE MR0175 ta buƙata; ƙarin CTOD da buƙatun ƙarancin zafin jiki
Girma da Adadi:

● OD 610mm (24″) × WT 15.9mm-Mita 45,000 (kimanin tan 9,200) da aka ƙera ta hanyar tsarin UOE

● OD 610mm (24 ″) × WT 19.0mm-Mita 12,000 (kimanin tan 2,800) da tsarin UOE ya ƙera (bango mai kauri don sashin hawa)

● OD 813mm (32″) × WT 22.2mm-Mita 8,000 (kimanin tan 3,100) da aka ƙera ta hanyar JCOE process (sashen teku)
Jimilla:Mita 65,000 (kilomita 65), kimanin tan 15,100

Bayani dalla-dalla:Rufin 3LPP na waje (3.5mm) don zafin jiki mai yawa (95°C), ƙarshen da aka yanke 30°/1.6mm, gwajin hydro a 18.0 MPa (matsin lamba na ƙira 12.5 MPa). Tasirin Charpy da ake buƙata a -20°C (min 50J, an cimma 100-160J). CTOD a -20°C: ƙarfe mai walda ≥ 0.25mm, HAZ ≥ 0.30mm (an cimma 0.35-0.55mm). HIC ga NACE TM0284 Magani A, 96h-Karɓa: CLR = 0%, CTR = 0%, CSR = 0%. SSC ga kowace NACE TM0177 Hanyar A, 720h a 90% SMYS-babu tsagewa. Tauri mafi girma 85 HRB. An shafa PWHT a kan dukkan bututu (a jiƙa 590°C ± 10°C, awanni 1.5). 100% UT tare da TOFD tare da 20% RT. Dubawa ta ɓangare na uku daga DNV Ostiraliya.

Aikace-aikace:Bututun iskar gas mai tsami yana jigilar iskar gas daga filayen teku (tare da sinadarin H₂S na 15-25 ppm) zuwa wani kamfanin LNG na teku. Bututun mai tsawon kilomita 65 ya haɗa da sashin ruwa mai zurfi a ƙarƙashin teku (zurfin ruwa 200-300m) da kuma sashin ruwa a cikin teku ta hanyar ƙasa mai lalata. Bututun yana aiki a zafin 95°C da 12.5 MPa.

Kalubalen Fasaha da Magani:

● Zafin jiki mai yawa (95°C) tare da aikin tsami -Yawancin bututun mai suna aiki a ƙasa da 80°C. A zafin jiki na 95°C, NACE MR0175 ya sanya ƙa'idodi masu tsauri kan tauri da zaɓin kayan. An zaɓi faranti masu launin Mo-alloyed (Mo 0.20-0.25%) kuma an yi amfani da shafi na 3LPP (polypropylene, wanda aka ƙididdige zuwa 120°C) maimakon 3LPE (an iyakance shi zuwa 80°C). An rage zafin PWHT zuwa 580°C don guje wa zafi fiye da kima. Tauri bayan PWHT: ƙarfe mai tushe 78-82 HRB, walda 80-84 HRB-da kyau a cikin iyaka.

● Bukatar HIC mara fashewa -Ana buƙatar CLR = 0% (babu fashewar HIC). An yi amfani da faranti masu ƙarancin sulfur (S ≤ 0.0008%) tare da rabon Ca/S 2.2. Bayan PWHT, gwajin HIC akan samfura 20 (4 a kowace zafi) ya nuna CLR 0%, CTR 0%, CSR 0%. Binciken tsarin microstructure ya nuna kawai sulfides na globular (babu MnS mai tsayi).

● Ƙarfin karyewar CTOD don hawan jirgin ruwa -Sashen riser (kilomita 12) ya buƙaci gwajin CTOD a -20°C. Womic ta yi CTOD akan ƙarfe na walda da HAZ. Sakamakon: ƙarfe na walda 0.40-0.55mm, HAZ 0.45-0.70mm (sama da 0.25mm/0.30mm). Mun kuma bayar da shawarwarin cikakken cancantar tsarin walda (WPQ) don walda girth field.

● Mannewa mai zafi mai yawa (3LPP) -Rufin 3LPP yana buƙatar FBE primer (epoxy) da saman polypropylene. Rufin da aka shafa a cikin mahaifa a cikin wurin aiki mai sarrafa yanayi. Ƙarfin barewar a 95°C an auna shi a 75 N/cm (mafi ƙarancin 50 N/cm). Ragewar Cathodic a 95°C bayan kwana 28: ≤ radius na 6mm.

● Kayan aiki zuwa Yammacin Ostiraliya mai nisa -An jigilar bututu daga Shanghai zuwa tashar jiragen ruwa ta Dampier (Yammacin Ostiraliya) ta hanyar jirgin ruwa mai cike da fashewa (tafiya ta kwanaki 28). Saboda lokacin guguwa, an jinkirta jigilar kayayyaki biyu. Womic ta daidaita jadawalin samarwa don haɗa jigilar kayayyaki da kuma guje wa rushewa. Duk tan 15,100 da aka kawo a cikin taga aikin.

● Sakamako:An fara aikin shimfida bututun mai mai tsami a kwata na 1 na shekarar 2025. Bayan watanni 18 na aiki, binciken da aka yi a layi (ILI) bai nuna wata matsala da ta shafi HIC ko SSC ba. Kamfanin ya amince da Womic Steel a matsayin mai samar da kayayyaki masu inganci don ayyukan fadada iskar gas na gaba a Arewa maso Yamma.

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

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

Karfe Mai Kyau-Abokin hulɗarka mai aminci ga API 5L X65 PSL2 mai aikin tsami bututun ƙarfe na LSAW don layukan bututun gas mai matsin lamba, bututun ruwa mai zurfi a bakin teku, da aikace-aikacen sabis na acidic a duk duniya.