Hluav taws xob Resistance Welded carbon steel kav yog tsim nyob rau hauv ib tug ntau yam ntawm cov ntaub ntawv qib kom tau raws li structural, siab, thiab pipeline kev pab cuam. Txawm hais tias cov txheej txheem tsim khoom tseem zoo ib yam, cov tshuaj lom neeg muaj pes tsawg leeg, lub zog ntawm lub zog, thiab cov txheej txheem tshuaj xyuas sib txawv nyob ntawm qib uas tau teev tseg. Xaiv cov khoom tsim nyog qib yog qhov tseem ceeb vim nws ncaj qha txiav txim siab load- bearing peev, siab tsis kam, weldability, thiab ntev - lub sij hawm durability.
Cov kab ke ua ke rau ERW cov kav dej tau txhais raws li cov qauv thoob ntiaj teb xws li API 5L rau kev thauj mus los hauv kav, ASTM A53 rau kev siv dav dav thiab siab, thiab EN 10219 rau cov qauv hollow seem. Txhua qhov system faib cov ntaub ntawv raws li qhov tsawg kawg nkaus tawm lub zog thiab cov kev pabcuam npaj.
API 5L Qib rau Pipeline Daim Ntawv Thov
Qib B raws li cov khoom siv hauv paus
Raws li API 5L specification, Qib B yog ib qho ntawm cov khoom siv dav tshaj plaws rau nruab nrab - cov kav xa dej siab. Nws muaj qhov sib npaug ntawm lub zog, weldability, thiab toughness. Qhov tsawg kawg nkaus tawm lub zog yog feem ntau nyob ib ncig ntawm 245 MPa, uas ua rau nws haum rau cov roj, roj, thiab dej xa mus rau hauv cheeb tsam network thiab sib sau ua ke kab.
Qib B feem ntau raug xaiv thaum cov raj xa dej siab yuav tsum muaj nruab nrab thiab tus nqi ua haujlwm yog qhov tseem ceeb. Vim tias ERW kev tsim khoom muab cov khoom siv sib xws, nws ua raws li cov kev cai ntawm qib no rau cov kav dej me me mus rau nruab nrab.
X-Series High- Qib Siab
X-series qib nyob rau hauv API 5L, xws li X42, X52, X60, thiab X70, raug cais raws li qhov tsawg kawg nkaus tawm lub zog uas qhia ntau txhiab psi. Piv txwv li, X42 sib raug rau kwv yees li 42,000 psi yam tsawg kawg nkaus yield zog. Raws li qib nce, ob qho tib si tawm lub zog thiab tensile zog nce raws li.
Siab dua - qib zog xws li X60 thiab X70 yog dav siv nyob rau hauv ntev - cov roj thiab cov kav xa hluav taws xob uas yuav tsum muaj siab dua thiab tsim kom muaj txiaj ntsig zoo dua. Siv qib siab dua - qib steel tso cai rau txo cov phab ntsa tuab thaum tuav lub peev xwm siab, txo cov khoom hnyav thiab cov nqi thauj mus los ntev.
Txawm li cas los xij, thaum lub zog nce ntxiv, kev tswj hwm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv vuam yuav tsim nyog los tswj kom muaj zog txaus thiab tsis txhob tawg tawg.
ASTM A53 rau General thiab Pressure Service
Cov qauv siv thiab kev siv hluav taws xob
Tus qauv ASTM A53 tau siv dav hauv kev tsim kho, tshuab tshuab, thiab qis - mus rau nruab nrab - kev thauj mus los ntawm cov kua. Qib B raws li ASTM A53 tshwj xeeb tshaj yog rau cov kav dej ERW siv hauv cov tsev tsim, kab dej, hluav taws xob tiv thaiv, thiab cov kav dej dav dav.
Piv nrog API 5L, ASTM A53 muab qhov tseem ceeb rau kev ua haujlwm ntawm cov tshuab ua haujlwm dav dav thiab qhov ua kom ntev ntev es tsis muaj kev puas siab puas ntsws rau qhov ntev - cov kav dej. Nws qhov kev tawm dag zog tsawg kawg yog feem ntau nyob ib puag ncig 240 MPa, zoo ib yam li API Qib B, tab sis nws daim ntawv thov tau dav dua hauv cov uas tsis yog - cov kav dej.
ASTM A53 ERW cov kav dej tau txais txiaj ntsig zoo rau lawv cov khoom siv ntau yam, muaj, thiab cov nqi ua haujlwm zoo hauv cov tshuab tsis muaj zog siab.
TS EN 10219 Cov Qauv Hollow Sections
European Structural Qib System
Hauv Tebchaws Europe thiab ntau qhov haujlwm thoob ntiaj teb, ERW cov kav dej rau kev siv cov qauv feem ntau ua raws li EN 10219. Cov qauv no suav nrog txias- tsim welded structural hollow seem ua los ntawm cov tsis yog - alloy thiab nplua nplej hlau.
Qib xws li S235, S275, thiab S355 yog txhais raws li qhov tsawg kawg nkaus tawm lub zog hauv megapascals. Piv txwv li, S355 qhia qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa. Cov qib no feem ntau yog siv rau hauv lub tsev thav duab, txuas hniav, thiab thauj khoom-cov kabmob steel.
Tsis zoo li API pipeline qib, EN 10219 tsom rau cov qauv kev ua tau zoo nyob rau hauv cov khoom siv zoo li qub thiab tsis muaj zog ntau dua li kev tswj hwm sab hauv. Kev ntsuam xyuas qhov cuam tshuam thiab qhov kev sib haum xeeb tau teev tseg raws li European kev tsim kho.
Cov lus hauv qab no qhia txog cov qib sawv cev thiab lawv cov khoom siv kho tshuab raug.
| Txuj | Qib | Yam tsawg kawg nkaus tawm lub zog (MPa) | Yam tsawg kawg Tensile Strength (MPa) | Daim ntawv thov tseem ceeb |
|---|---|---|---|---|
| API 5L | Qib B | 245 | 415 | Roj & roj pipelines |
| API 5L | X42 | 290 | 415 | Nruab nrab -siab kis |
| API 5L | X52 | 360 | 460 | Ntev -kab kav dej |
| API 5L | X70 | 485 | 570 | Siab - cov kab hauv siab |
| ASTM A53 | Qib B | 240 | 415 | Kev tsim kho & kev siv hluav taws xob |
| TS EN 10219 | S355 | 355 | 470–630 | Structure engineering |
Qhov kev sib piv no qhia txog qhov kev faib tawm lub zog zoo li cas nrog rau cov kev pabcuam uas xav tau.
Daim Ntawv Thov Scenario los ntawm Qib Siab
qis- qib zog xws li ASTM A53 Qib B thiab API 5L Qib B feem ntau yog siv hauv cov kav dej hauv nroog, cov kev pabcuam hauv tsev, thiab lub zog hauv cheeb tsam. Cov ntawv thov no xav tau kev ntseeg siab thiab weldability tab sis tsis xav tau kev kub siab sab hauv.
Nruab nrab- qib zog xws li API X42 thiab X52 tau siv dav hauv cov roj thiab cov roj xa hluav taws xob, qhov twg muaj qhov nruab nrab mus rau qhov siab siab tab sis ntev - kev ua haujlwm deb tseem tuaj yeem tswj tau.
High- qib siab xws li X60 thiab X70 feem ntau yog xaiv rau hla- cov kav dej xa hluav taws xob hauv lub tebchaws. Lawv lub zog tawm los ntau dua txhawb kev ua haujlwm siab dua thiab txhim kho cov khoom siv tau zoo. Hauv cov ntsiab lus ntawm cov qauv, EN 10219 S355 yog qhov zoo dua thaum thauj khoom ntau dua -cov kabmob muaj peev xwm xav tau hauv cov haujlwm tsim kho.
Cov lus hauv qab no categorizes qib zog raws li kev thov ib puag ncig.
| Qib Siab | Cov Qib Neeg Sawv Cev | Kev Pab Cuam Siab | Yam Kev Lag Luam | Tsim Advantage |
|---|---|---|---|---|
| Txheem Lub Zog | ASTM A53 GrB, API Gr.B | Tsawg mus rau nruab nrab | Kev tsim kho & kev siv hluav taws xob | Tus nqi - siv tau ntau yam |
| Lub zog nruab nrab | API X42–X52 | Nruab nrab mus rau siab | Roj & roj faib | Balanced zog & ductility |
| Siab zog | API X60–X70 | Siab | Ntev - kis tau tus mob | Txo phab ntsa thickness |
| Cov qauv muaj zog siab | TS EN S355 | Cov qauv kev thauj khoom | Infrastructure tej yaam num | Enhanced load peev xwm |
Qhov kev faib tawm no qhia tau hais tias qhov kev xaiv qib ncaj qha cuam tshuam rau cov kev xav tau ntawm kev ua haujlwm.
Kev xaiv qeb kev txiav txim siab
Cov khoom siv qib xaiv nyob ntawm qhov siab sab hauv, ib puag ncig, kev cai tswj hwm, thiab kev xav txog nyiaj txiag. Siab dua - steels muaj zog txo cov khoom hnyav tab sis yuav tsum muaj kev tswj xyuas nruj dua thaum lub sij hawm ERW welding kom muaj zog thiab kev ncaj ncees.
Cov kws tsim khoom yuav tsum ntsuas tsis yog tsuas yog tawm los thiab tensile lub zog tab sis kuj ductility, cuam tshuam tsis kam, thiab weldability thaum qhia ERW carbon steel yeeb nkab qib. Ua raws li cheeb tsam lossis qhov project- cov qauv tshwj xeeb ua kom muaj kev nyab xeeb thiab txhim khu kev qha ntev - ua haujlwm tau zoo.
Xaus
Cov qib khoom siv hauv ERW carbon steel kav yog txhais los ntawm cov txheej txheem thoob ntiaj teb xws li API 5L, ASTM A53, thiab EN 10219. API qib nyob rau hauv cov kav dej xa mus nrog cov qib siab xws li Qib B mus rau qib siab - zog X70. ASTM A53 muab ntau yam kev daws teeb meem rau kev tsim kho thiab kev pabcuam siab dav dav, thaum EN 10219 tsom rau cov qauv kev thauj khoom-cov kabmob ua haujlwm. Txhua qib system ua raws li cov kev siv engineering tshwj xeeb, thiab xaiv cov qib tsim nyog lub zog ua kom pom kev sib npaug ntawm kev nyab xeeb, ruaj khov, thiab kev ua haujlwm ntawm kev lag luam hauv ntau qhov chaw ua haujlwm.
