Vim li cas 3LPE txheej yog qhov tseem ceeb rau Underground LSAW Pipelines?

Cov kav dej hauv av tsim cov pob txha ntawm lub zog niaj hnub thiab dej hauv vaj tse, thauj cov roj, roj, thiab dej ntau thoob plaws ntiaj teb. Rau Longitudinally Submerged Arc Welded (LSAW) steel kav, uas nquag xaiv rau cov ntaub ntawv faus tseem ceeb no vim lawv txoj kab uas hla loj thiab kev tsim kho, kev tiv thaiv corrosion tsis yog ib qho kev xaiv xwb - nws yog qhov tsim nyog. Ntawm ntau yam kev daws teeb meem los tiv thaiv-corrosion, Peb- Txheej Polyethylene (3LPE) txheej txheej yog qhov kev xaiv zoo tshaj. Tab sis yog vim li cas 3LPE txheej yog qhov tseem ceeb rau cov kav dej hauv av LSAW, thiab nws yuav ua li cas ua kom lub sijhawm ntev - kev ncaj ncees thiab kev nyab xeeb ntawm cov khoom tseem ceeb no? Hebei Huayang Steel Pipe Co., Ltd., uas yog ib lub chaw tsim khoom thiab coater ntawm LSAW kav, piav qhia txog lub luag haujlwm tseem ceeb ntawm 3LPE.

Qhov Kev Nyuaj Siab Tsis Txaus Ntshai ntawm Underground Corrosion

Thaum faus, steel pipelines tas li raug rau ib puag ncig hnyav heev uas txhawb nqa corrosion:

•Soil Chemistry: Cov pH sib txawv, cov ntsiab lus noo noo, thiab muaj cov corrosive ions (chlorides, sulfates) hauv cov av tuaj yeem ua kom cov electrochemical corrosion.

• Cov Kev Ua Si Microbial: Qee cov kab mob hauv cov av tuaj yeem tua cov hlau ncaj qha lossis tsim cov khoom siv corrosive, ua rau microbiologically cuam tshuam corrosion (MIC).

•Stray Currents: Cov hluav taws xob tam sim no los ntawm cov kab hluav taws xob nyob ze lossis cathodic tiv thaiv kab ke tuaj yeem ua rau muaj kev cuam tshuam hauv cheeb tsam yog tias tsis tswj xyuas kom zoo.

• Mechanical Damage: Av txav, pob zeb, thiab kev tsim kho kev ua ub no tuaj yeem ua rau puas los yog dents, cuam tshuam cov yeeb nkab nto.

• Oxygen thiab Dej: Lub xub ntiag ntawm ob qho tib si oxygen thiab dej hauv av yog thawj tus tsav tsheb ntawm xeb tsim.

Cov kav hlau tsis muaj kev tiv thaiv nyob rau hauv ib puag ncig zoo li no yuav txo qis sai sai, ua rau cov dej xau, tawg, thiab kev puas tsuaj loj. Qhov no yog qhov txheej txheem txheej txheej zoo li 3LPE ua qhov tseem ceeb.

3LPE Txheej Txheej Txheej Txheej Txheej Txheej: Ntau yam -Txheej Txheem Tiv Thaiv

3LPE yog ntau- txheej txheej txheej txheej uas muab kev ruaj khov, ntev - tiv thaiv corrosion thiab kev puas tsuaj. Nws feem ntau muaj peb cov txheej txheem sib txawv ua ntu zus rau kev ntxuav thiab preheated LSAW yeeb nkab nto:

1. Fusion Bonded Epoxy (FBE) Primer

•Function: Qhov no yog thawj txheej, siab -kev ua tau zoo epoxy hmoov uas yog electrostatically siv rau cov rhuab yeeb nkab nto. Nws melts thiab tsim ib tug nruam, tsis yog - zaj duab xis ntxeem tau uas chemically bonds rau cov hlau.

• Cov txiaj ntsig zoo: Muab cov adhesion zoo rau cov hlau, kev tiv thaiv corrosion zoo dua, thiab ua raws li qhov tseem ceeb tiv thaiv cov neeg ua haujlwm corrosive. FBE paub txog nws cov tshuaj muaj zog thiab tiv thaiv cathodic disbondment.

2. Copolymer Adhesive

•Function: Ib txheej ntawm copolymer nplaum yog extruded tshaj FBE txheej. Cov nplaum no tshwj xeeb tsim los rau kev sib raug zoo nrog FBE thiab txheej txheej polyethylene.

• Cov txiaj ntsig zoo: Ua haujlwm tseem ceeb ntawm kev sib koom ua ke, ua kom muaj zog adhesion ntawm FBE thiab polyethylene, tiv thaiv delamination thiab tswj kev ncaj ncees ntawm cov txheej txheem ntau- txheej.

3. Polyethylene (PE) Topcoat

•Function: Cov txheej txheej sab nraud yog txheej txheej extruded siab - ntom polyethylene (HDPE) los yog nruab nrab - ntom polyethylene (MDPE).

• Cov txiaj ntsig: Muab cov khoom siv tshwj xeeb tiv thaiv kev puas tsuaj, cuam tshuam, thiab kev ntxhov siab hauv av thaum tuav, teeb tsa, thiab ua haujlwm. Polyethylene kuj tseem tiv taus dej nqus thiab tshuaj tua kab mob, muab kev tiv thaiv ntxiv tiv thaiv corrosion.

Vim li cas 3LPE yog qhov tseem ceeb rau Underground LSAW Pipelines

Kev sib xyaw ntawm peb txheej no muab kev sib koom ua ke, muab kev tiv thaiv tsis sib xws rau cov kav dej hauv av LSAW:

1. Superior Corrosion Protection

FBE txheej muab ib qho impermeable barrier thiab tshuaj tiv thaiv zoo heev, zoo cais cov hlau los ntawm corrosive ntsiab nyob rau hauv cov av. Qhov no tiv thaiv electrochemical corrosion thiab ua rau cov yeeb nkab ntev ntev.

2. Kev tiv thaiv zoo heev

Lub tuab, tawv polyethylene txheej txheej ua raws li cov ntaub thaiv npog tiv thaiv kev puas tsuaj rau lub cev. Qhov no yog qhov tseem ceeb thaum lub sij hawm tuav cov yeeb nkab, kev thauj mus los, trenching, backfilling, thiab tom ntej hauv av txav, tiv thaiv FBE txheej los ntawm khawb, khawb, thiab cuam tshuam.

3. High Adhesion thiab Cathodic Disbondment Resistance

Cov nplaum copolymer ua kom muaj zog, ruaj khov ntawm tag nrho peb txheej thiab rau cov hlau substrate. Qhov no adhesion siab, ua ke nrog FBE cov khoom siv hauv paus, muab kev tiv thaiv zoo heev rau cathodic disbondment, ib qho kev ua haujlwm tsis zoo uas cathodic tiv thaiv tam sim no tuaj yeem ua rau cov txheej txheem cais tawm ntawm cov yeeb nkab nto.

4. Lub neej ua haujlwm ntev thiab txo kev tu

Los ntawm kev tiv thaiv corrosion thiab kev puas tsuaj, 3LPE coated LSAW pipelines tuaj yeem ua tiav kev pabcuam lub neej ntawm 50 xyoo lossis ntau dua. Qhov no txo ​​qis qhov xav tau ntawm kev kho tus nqi kim heev, kev saib xyuas, thiab kev hloov ntxov ntxov, ua rau lub sijhawm ntev heev - txuag nqi thiab txhim kho kev ua haujlwm zoo.

5. Compatibility nrog Cathodic tiv thaiv

Thaum 3LPE muab kev tiv thaiv corrosion thawj, nws ua haujlwm nrog kev tiv thaiv cathodic (CP) systems. Cov txheej txheem txo qhov kev thov tam sim no rau CP, ua rau tag nrho cov kev tiv thaiv corrosion zoo dua thiab kev lag luam.

6. Kev nyab xeeb ib puag ncig

Los ntawm kev tiv thaiv cov xau thiab tawg los ntawm corrosion, 3LPE coatings pab ncaj qha rau ib puag ncig kev nyab xeeb, tiv thaiv cov av thiab dej los ntawm kev sib kis los ntawm kev thauj cov hydrocarbons lossis tshuaj lom neeg.

Hebei Huayang: Koj qhov chaw ntseeg siab rau 3LPE Coated LSAW Pipes

Hebei Huayang Steel Pipe Co., Ltd. tsis tsuas yog tsim cov siab - zoo LSAW steel kav, tab sis kuj muab lub xeev - ntawm -the -art 3LPE txheej cov kev pab cuam. Peb cov txheej txheem txheej txheem ua raws li cov qauv thoob ntiaj teb xws li DIN 30670, ISO 21809-1, thiab NACE, kom ntseeg tau tias peb cov kav dej 3LPE coated LSAW muaj kev tiv thaiv siab tshaj plaws thiab kev ntseeg siab.

Peb nkag siab qhov tseem ceeb ntawm kev tiv thaiv corrosion rau cov kav dej hauv av. Los ntawm kev xaiv Hebei Huayang, koj xaiv LSAW cov kav dej uas tau tsim los rau kev ua haujlwm ntev thiab kev nyab xeeb, txhawb nqa los ntawm peb cov kws tshaj lij hauv kev tsim cov yeeb nkab thiab cov txheej txheem siab heev. Koom tes nrog peb kom ntseeg tau tias koj cov kav dej hauv av muaj kev tiv thaiv tiv thaiv tsis muaj zog ntawm corrosion.

Cov txiaj ntsig tseem ceeb ntawm 3LPE Txheej rau Underground LSAW Pipelines

Hauv kev xaus, 3LPE txheej tsis yog tsuas yog muaj txiaj ntsig tab sis tseem ceeb rau cov kav dej hauv av LSAW. Nws cov txheej txheem ntau- txheej tiv thaiv muab kev tiv thaiv tsis sib xws tiv thaiv kev xeb thiab kev puas tsuaj, ua kom lub sijhawm ntev - kev ncaj ncees, kev nyab xeeb, thiab kev ua haujlwm ntawm cov txheej txheem tseem ceeb. Hebei Huayang Steel Pipe Co., Ltd. yog koj tus khub txhim khu kev qha rau siab -LSAW kav nrog superior 3LPE txheej, tiv thaiv koj cov peev txheej thiab ib puag ncig. Hu rau peb hnub no kom ruaj ntseg rau yav tom ntej ntawm koj cov dej xa dej hauv av.