Kev tshuaj xyuas cov txheej txheem zoo li qub: xyuas seb cov txheej puas yog du thiab tsis muaj burrs, yog tias muaj cov hlau raug, thiab yog tias cov xim phim cov neeg siv khoom xav tau.
Xyuas seb lub thickness ntawm txheej raws li tus neeg siv khoom specifications.
Ua qhov kev ntsuam xyuas pinhole.
Kev xeem adhesion: Kev kuaj adhesion yog ua raws li Cov Lus Qhia Ntxiv A thiab B hauv CJ / T 120-2016.
Khoov xeem: Txiav ib qho piv txwv ntev li ntawm 50 hli los ntawm txhua txoj hauj lwm ntawm cov yeeb nkab yas-coated steel. Muab nws nruab nrab ntawm ob daim hlau tiaj tus ntawm chav tsev kub thiab maj mam muab tso rau ntawm lub tshuab ntsuas tensile. Rau cov txheej txheem polyethylene, qhov kev ncua deb ntawm ob daim hlau yuav tsum tau tswj kom 2/3 ntawm sab nraud ntawm cov qauv; rau epoxy resin coatings, qhov kev ncua deb yuav tsum tau tswj mus rau 4/5 ntawm lub sab nraud txoj kab uas hla. Thaum lub sij hawm compression, weld seam ntawm cov yas-coated steel yeeb nkab yuav tsum yog perpendicular mus rau compression kev taw qhia. Tom qab compression, saib cov txheej txheej sab hauv rau cov kab nrib pleb lossis tev. Rau cov yas-coated steel kav nrog nominal loj dua DN200, DN150 kav yuav siv tau los hloov.
Flattening test: Cov kav dej yas-coated steel nrog cov kab uas hla sab nraud ntau dua 50mm tau txais kev sim ua kom tiaj. Cov qauv ntev yog (50 ± 10) hli. Muab cov qauv ntawm ob daim hlau tiaj tus ntawm qhov kub ntawm (20 ± 5) degree . Maj mam muab nws tso rau ntawm lub tshuab ntsuas siab kom txog thaum qhov kev ncua deb ntawm ob daim hlau yog 4/5 ntawm cov qauv sab nraud rau epoxy resin coatings thiab 2/3 rau polyethylene coatings. Thaum lub sij hawm compression, weld seam ntawm coated steel yeeb nkab yuav tsum tau perpendicular mus rau lub load daim ntawv thov kev taw qhia. Tom qab qhov kev sim, tshuaj xyuas cov txheej sab hauv kom pom cov kab nrib pleb lossis tev. Yog tias tsis muaj qhov tsis xws luag, qhov kev xeem dhau lawm. Rau cov yas-coated steel kav nrog nominal loj dua DN200, DN150 kav yuav siv tau los hloov.
Impact test: Txiav ib qho piv txwv ntev li ntawm 100mm los ntawm txhua txoj hauj lwm ntawm cov yeeb nkab yas-coated steel. Ua qhov kev ntsuam xyuas qhov cuam tshuam raws li teev nyob rau hauv chav tsev kub, nrog rau qhov vuam seam positioned opposite rau qhov cuam tshuam nto, raws li qhia hauv daim duab hauv qab no. Tom qab qhov kev sim, tshuaj xyuas cov txheej sab hauv kom pom cov kab nrib pleb lossis tev. Yog tias tsis muaj qhov tsis xws luag, qhov kev xeem dhau lawm. Rau cov yas-coated steel kav nrog nominal loj dua DN200, DN150 kav yuav siv tau los hloov.
Kev ntsuam xyuas kev tu cev: Kev ntsuas kev huv huv yuav tsum ua raws li GB / T 17219.
Kev kuaj lub tshuab nqus tsev: Qhov ntev ntawm cov yeeb nkab ntu yog (500 ± 50) hli. Siv cov kev ntsuas tsim nyog los thaiv cov yeeb nkab inlet thiab qhov hluav taws xob. Maj mam nce qhov tsis zoo siab ntawm qhov nkag mus rau 660mmHg thiab tuav nws li 1 feeb. Tom qab qhov kev xeem, tshuaj xyuas cov txheej txheej sab hauv rau ib qho kev tshem tawm.
High-temperature resistance test, low-temperature resistance test, pressure cycle test, temperature cycle test, sov dej aging test, thiab lwm yam.
