Vim li cas thiaj xaiv peb?
One-Stop Solution
Shandong Changquan Aluminium Kev Lag Luam Co., Ltd. yog ib qho kev lag luam niaj hnub uas koom nrog kev tshawb fawb thiab kev tsim kho, tsim, tsim, muag, thiab kev pab cuam ntawm high-end zog-txuag txhuas cov ntaub ntawv, lub teeb yuag aluminium profiles, thiab ntse customized qhov rooj thiab qhov rais.
Kev paub nplua nuj
Tau txais kev qhuas zoo xws li Shandong High Quality Brand thiab Shandong Famous Brand; Kuv tau thov rau Engineering Technology Research Center, ib qho online aluminium profile tsim kev pabcuam platform tsim los ntawm lub tuam txhab, uas yog kev tswj hwm kev tswj hwm qib siab hauv tib qho kev lag luam.
Muaj peev xwm ntau lawm
Lub tuam txhab muaj tag nrho cov peev ntawm ze li ntawm 200 lab yuan thiab muaj peev xwm tsim txhua xyoo ntawm 50000 tons ntawm txhuas cov ntaub ntawv. Nws yog ib lub tuam txhab ua lag luam hauv kev ua thiab tsim cov txhuas profile hauv Suav teb.
Txhim khu khoom zoo
Lub tuam txhab yog lub tuam txhab high-tech, qhia thoob ntiaj teb cov cuab yeej siv siab heev thiab ua raws li cov qauv thoob ntiaj teb; Ib txhij siv ntau yam hauv ib tus qauv kev tswj hwm xws li 6S thiab ERP los tsim cov khoom zoo.
Alu Round Tube yog dab tsi?
Alu round raj, tseem hu ua aluminium round raj lossis extruded aluminium round raj, yog ib hom cylindrical txhuas cov khoom siv ntau yam kev siv.
Peb cov square aluminium profiles yog precision-engineered rau superior zog thiab durability. Nrog rau kev tiv thaiv corrosion zoo heev thiab lub teeb yuag, lawv zoo tagnrho rau ntau yam kev siv xws li kev tsim kho, tsheb, thiab kev lag luam. Muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab alloys, cov profiles no tuaj yeem ua raws li koj qhov kev xav tau tshwj xeeb.
Lub Corner aluminium accessories kuj muaj ntau yam thiab tuaj yeem siv rau ob qho tib si kev txhawb nqa thiab kev zoo nkauj. Lawv cov ntse, huv si thiab cov kaum ntse ntse ua rau lawv yooj yim ua haujlwm nrog thiab nruab. Txawm hais tias koj xav tau lawv rau qhov kev tsim kho loj lossis rau cov khoom siv hauv cov khoom siv hluav taws xob, peb lub kaum sab xis aluminium profiles yog cov kev daws teeb meem zoo tshaj plaws.
Lawv qhov yooj yim thiab yooj yim ntawm fabrication ua rau lawv nyiam xaiv rau kev tsim cov complex thiab meej. Txawm hais tias koj xav tau lawv rau cov qauv kev txhawb nqa, kev thov kom zoo nkauj, lossis kev sib xyaw ua ke ntawm ob qho tib si, peb lub hom phiaj aluminium profiles yog ib qho kev daws teeb meem zoo heev.
Engineered los tiv thaiv ib puag ncig hnyav, cov profiles no muaj kev tiv thaiv corrosion zoo heev, ua kom muaj kev ua haujlwm ntev txawm tias nyob rau hauv cov xwm txheej nyuaj. Nrog lawv cov qauv tsim, lawv zoo tagnrho rau ntau yam kev siv xws li kev tsim kho, tsheb, kev lag luam, thiab lwm yam.
Thaum tshav kub kub rwb thaiv tsev siab Alu
Peb cov hluav taws kub rwb thaiv tsev yog tsim los muab cov thermal rwb thaiv tsev zoo tshaj plaws rau qhov rais, qhov rooj, thiab lwm yam kev siv vaj tse. Ua los ntawm cov ntaub ntawv zoo, cov strips no zoo txo cov cua sov hloov thiab txhim kho lub zog ua haujlwm. Muaj nyob rau hauv ntau qhov ntau thiab tsawg, lawv tuaj yeem ua raws li koj cov kev xav tau tshwj xeeb.
Thaum tshav kub kub rwb thaiv tsev sawb
Muaj nyob rau hauv ntau qhov ntau thiab tsawg, lawv tuaj yeem ua raws li koj cov kev xav tau tshwj xeeb. Hu rau peb niaj hnub no los tshawb txog peb cov thermal so strips thiab txhim kho lub zog ua haujlwm ntawm koj lub tsev.
Qhov zoo ntawm Alu Round Tube
Corrosion Resistant
Ntawm tag nrho cov zoo coj los ntawm txhuas, tsis muaj ib qho tseem ceeb tshaj li corrosion kuj. Cov hlau no tuaj yeem tiv thaiv xeb zoo dua li feem ntau ntawm cov hlau nrov, uas yog vim li cas nws feem ntau xaiv rau ntau hom kev siv sab nraum zoov thiab dej.
Lub teeb
Txawm hais tias lwm cov hlau yuav muaj zog dua, aluminium muaj qhov zoo dua hauv qhov hnyav tag nrho. Hlau, piv txwv li, hnyav ntau dua li txhuas. Hlau kuj hnyav dua; aluminium yog kwv yees li ib feem peb ntawm qhov hnyav piv rau hlau. Vim li no, alu round raj yog qhov zoo tagnrho rau kev siv hauv kev thauj mus los thiab kev lag luam aerospace. Nrog alu round raj, engineers tuaj yeem tsim cov tsheb sib dua.
Suab rwb thaiv tsev
Kev tswj lub suab tuaj yeem yog qhov tseem ceeb rau ntau yam laj thawj, thiab thaum alu round raj yuav tsis raug suav tias yog cov khoom siv suab nrov (xws li lub suab rwb thaiv tsev phab ntsa, piv txwv li), nws muaj peev xwm txo cov suab ntawm ib cheeb tsam mus rau lwm qhov.
Kub thiab nplaim Resistant
Alu round tubes kuj muaj cov khoom siv hluav taws xob kub thiab tuaj yeem siv tau txawm tias qhov kub thiab txias yuav tsum muaj rau kev lag luam lossis cov qauv siv tshuab.
Lub sij hawm ntev Durability
Aluminium yog tsim tshwj xeeb los tiv thaiv corrosion, uas tsis tsuas yog ua kom nws muaj zog, tab sis kuj ua kom lub sijhawm ntev. Cov neeg tsim khoom, cov chaw tsim khoom, thiab cov kws tshaj lij kev lag luam uas xav tau cov tubing hlau uas yuav kav ntev mus rau xyoo lawm feem ntau tig mus rau txhuas, piv txwv li lub zog ntau dua ntawm cov hlau tsis tas yuav tsum tau.
Malleable
Aluminium yog ib qho ntawm ntau yam hlau uas tam sim no muaj, uas yog vim li cas alu round raj thiaj li nrov. Cov hlau no tuaj yeem tsim ua ntau yam sib txawv thiab ntau thiab tsawg, thiab nws feem ntau yooj yim (thiab pheej yig) ua haujlwm nrog. Qhov no ua rau aluminium qhov kev xaiv zoo tshaj plaws rau kev siv qhov twg malleability tseem ceeb.
Rov ua dua
Ntau lub tuam txhab tau txais kev coj ua hauv eco, uas suav nrog kev siv cov khoom siv rov ua dua tshiab. Vim tias alu puag ncig lub raj tuaj yeem rov ua dua tshiab, cov khoom siv ntxiv, xws li kev txiav tawm, tuaj yeem rov ua dua es tsis txhob mus rau hauv qhov chaw pov tseg.
Hom Alu Round Tube
5052 Alu Round Tubes
5052 Alu round raj yog ib qho kev hloov pauv ntawm aluminium alloys uas yog improvised rau kev ua tau zoo dua. Lub 5052-0 alu round raj yog ib qho txhuas thiab magnesium alloy uas tau hloov kho rau corrosion kuj. Nws yog qhov nruab nrab lub zog magnesium alloy. Cov muaj pes tsawg leeg muaj hlau, silicon, manganese, tooj liab, thiab lwm yam khoom me me.
5083 Alu Round Tubes
5083 Alu round tubes yog qee yam ntawm ntau cov aluminium alloys siv nyob rau hauv ntau yam lag luam. ASTM B241 txhuas seamless kav yog kos thiab du. Lawv muaj cov qauv zoo granular, uas tso cai rau lawv kom meej meej thiab yooj yim anodized. Daim ntawv thov ntawm magnesium thiab lwm cov ntsiab lus rau cov hlau no ua rau nws tiv taus corrosion rau cov dej hiav txwv.
5086 Alu Round Tubes
5086 Alu round raj yog ib qho alloyed alu round raj. Aluminium yog lub teeb yuag, tsis yooj yim, thiab corrosion resistant hlau uas muaj cov tshuaj tiv thaiv siab dua nrog dej ntau dua li cov hlau muaj. Cov yam ntxwv no ua rau txhuas zoo siv rau hauv ntau daim ntawv thov. Txawm li cas los xij, 5086 H32 alu round tubes yog tsim los ntawm alloyed aluminium kom kov yeej qee yam ntawm txhuas cov yam ntxwv tsis muaj zog.
6061 Alu Round Tubes
6061 Alu round tube yog ib qho txawv ntawm alu round raj qib. Ntshiab aluminium thiab alloyed aluminium yog siv los ua cov alu round raj thiab. Cov kav dej 6061 yog tsim los ntawm silicon thiab manganese alloy ntawm txhuas. Muaj ntau lub sijhawm ntawm cov kav dej uas qhia txog cov chav kawm siab thiab phab ntsa thickness. 6061 T6 lub sij hawm 80 alu round tube yog qib siab nruab nrab, thiab nws tuaj yeem tiv taus siab ntau hauv daim ntawv thov hauv tsev.
6063-T6 Alu Round Tube
6063-T6 Alu round raj yog silicon magnesium alloys ntawm txhuas. Cov no yog siv los txhim kho lub zog thiab corrosion kuj ntawm aluminium. Hom hlau no tuaj yeem kho cua sov tom qab extrusion los txhim kho lub zog thiab toughened. Lub 6063-T5 alu round raj muaj qhov zoo elongation ntawm 8% thiab lub zog tensile zoo. Muaj cov chav kawm sib txawv thiab cov sij hawm los txiav txim siab txawv cov yam ntxwv ntawm cov khoom siv.
7075 Alu Round Tubes
7075 Alu round raj yog hu ua aircraft qib aluminium alloy yeeb nkab. Cov alloy muaj zinc thiab muaj zog heev. AL alloy 7075 piping yog ib qho ntawm ntau cov aluminium alloys uas tau siv nyob rau hauv ntau yam lag luam thiab kev siv.
Hom Alu Round Tube Siv
Kev tsim kho ncej
Aluminium round raj yog siv dav hauv kev tsim kho rau ntau yam qauv. Lawv tau ua haujlwm hauv kev tsim cov qauv rau cov tsev, tsev cog khoom, kev teeb tsa lub hnub ci, thiab txawm tias lub tsheb kauj vab. Lub teeb yuag tsis tau ruaj khov ntawm txhuas ua rau nws yog qhov kev xaiv nrov rau kev tsim cov khoom ruaj khov thiab tiv thaiv corrosion.
Nkoj Lub Tsev
Hauv kev lag luam marine, aluminium round raj yog siv rau kev tsim nkoj. Lawv tau ua haujlwm nyob rau hauv kev tsim cov nkoj nkoj, cov hulls, thiab superstructures vim lawv tsis kam tiv thaiv corrosion, lub teeb yuag, thiab muaj peev xwm tiv taus cov kev xav tau ntawm cov dej ntsev ib puag ncig.
Khoom vaj khoom tsev
Aluminium round raj feem ntau yog siv rau hauv kev tsim khoom vaj khoom vaj khoom tsev thiab khoom siv. Lawv tau ua haujlwm los tsim cov rooj tog vaj tog tsev, trellises, tsev cog khoom thav duab, thiab lwm cov qauv sab nraum zoov vim lawv cov corrosion kuj thiab haum rau siv sab nraum zoov.
Fabrications
Aluminium round tubes yog ntau yam kev xaiv rau kev tsim khoom. Lawv tuaj yeem siv tau rau ntau yam kev cai ua haujlwm, xws li tes tuav, cov khoom zoo nkauj, thiab kev tiv thaiv kev nyab xeeb. Lawv malleability thiab yooj yim ntawm fabrication ua rau lawv haum rau ntau yam kev siv hauv kev tsim kho thiab kev tsim khoom.
Kav Fitting
Aluminium round raj yog ua haujlwm nyob rau hauv lub khw haum thiab khw muag khoom tsim los tsim cov teeb pom kev zoo, khaub ncaws racks, txee txee, thiab cov khoom muag. Lawv lub teeb yuag thiab ruaj khov tso cai rau kev tsim cov chaw muag khoom ntau yam thiab stylish uas tuaj yeem hloov kho cov kev xav tau ntawm kev muag khoom.
Automotive Cheebtsam
Aluminium round raj yog siv nyob rau hauv kev lag luam tsheb rau ntau yam khoom, xws li yob tuav, cov khoom siv hluav taws xob, thiab cov khoom chassis. Lawv cov khoom sib sib zog nqus ua rau muaj roj efficiency thiab kev ua haujlwm hauv tsheb thaum tswj kev ua haujlwm zoo.
Custom Signage thiab Displays
Aluminium round raj tuaj yeem siv los tsim kev cai kos npe thiab cov lus qhia, xws li cov khw muag khoom, cov chaw muag khoom, thiab cov cim qhia. Lawv versatility thiab yooj yim ntawm customization ua rau lawv ib tug txaus nyiam xaiv rau tsim eye-catching qhia.
Cov cuab yeej ntaus kis las
Aluminium round raj yog ua hauj lwm nyob rau hauv kev tsim kho ntawm cov khoom ua si nawv, xws li tsheb kauj vab ncej, tents ncej, thiab ntau yam sab nraum zoov iav. Lawv kev sib xyaw ua ke ntawm lub zog thiab lub teeb yuag ua rau lawv haum rau ntau yam kev siv kis las.
Architectural Paub meej
Hauv kev tsim vaj tsev, aluminium puag ncig lub raj yog siv los tsim cov khoom zoo nkauj thiab cov suab nrov hauv lub tsev sab nrauv thiab sab hauv. Lawv tuaj yeem ua haujlwm rau balustrades, railings, thiab ornamental ntsiab, pab txhawb rau kev zoo nkauj ntawm cov qauv.
Teeb pom kev zoo
Aluminium round raj yog siv nyob rau hauv kev tsim kho cov teeb pom kev zoo, xws li pendant teeb, taug qab teeb pom kev zoo, thiab cov teeb pom kev zoo sab nraum zoov. Lawv muab cov kav ntev thiab cov qauv tsim niaj hnub rau ntau yam kev siv teeb pom kev zoo.
Kev tsim khoom ntawm Alu Round Tube
Kauj Ruam 1: Extrusion Tuag rau Extrusion Xovxwm
Lub voj voog-zoo li tus tuag yog tsim los ntawm H13 steel. Yog hais tias ib tug twb muaj lawm, nws yog muab los ntawm ib tug warehouse. Ua ntej extruding, tuag yuav tsum tau preheated rau 450 los yog mus txog 500 degrees Celsius los pab siv nws lub neej thiab lav txawm tias hlau ntws. Thaum cov tuag yog preheated, nws tuaj yeem muab tso rau hauv cov xovxwm extrusion.
Kauj Ruam 2: Preheated Aluminium Billet Pre-Extrusion
Tom ntej no, ib lub cylindrical thaiv ntawm Aluminium alloy, lub npe hu ua billet, yog txiav los ntawm ib tug ntev loj ntawm alloy khoom. Nws yog muab tso rau hauv qhov cub thiab preheated rau 400 los yog 500 degrees Celsius. Nws ua malleable txaus rau cov txheej txheem extrusion, tab sis tsis molten.
Kauj ruam 3: Billet tsiv mus rau Extrusion Xovxwm
Thaum lub billet ua tiav preheating, nws yog mechanically tsiv mus rau extrusion xovxwm. Ua ntej thauj nws mus rau hauv xovxwm, lubrication los yog tso tawm tus neeg sawv cev yog thov rau ntawm nws. Tus neeg sawv cev tso tawm kuj tseem siv rau ntawm qhov extrusion ram, kom tsis txhob ram thiab billet los ntawm kev ua ke.
Kauj ruam 4: Thawb lub Billet rau hauv lub thawv
Lub malleable billet yog tam sim no loaded nyob rau hauv lub extrusion xovxwm, lub hydraulic ram tso 15, 000 tons ntawm siab rau nws. Raws li tus ram tso siab, cov khoom billet raug yuam mus rau hauv lub thawv extrusion xovxwm. Cov hlau nce qhov loj me, sau cov thawv ntim cov phab ntsa.
Kauj Ruam 5: Extruded Solids
Raws li cov khoom sib xyaw ua ke hauv lub thawv, nws raug nias mus rau qhov extrusion tuag. Nrog rau qhov siab tas mus li, cov khoom txhuas txhuas yog daig thiab tsuas tuaj yeem tawm los ntawm qhov qhib qhov tuag. Nws tawm ntawm qhov qhib qhov tuag raws li cov yeeb nkab los yog lub raj tag nrho.
Kauj Ruam 6: Khiav thiab quenching Extrusions
Tom qab tawm los, ib tug puller tuav lub extrusion. Nws coj nws hla lub rooj khiav tawm, piv rau qhov ceev uas nws tawm ntawm cov xovxwm. Thaum nws taug kev hla lub rooj khiav, lub raj, lossis cov yeeb nkab yog "quenched," los yog tsis tu ncua siv lub kiv cua saum lub rooj los yog da dej.
Kauj Ruam 7: Txiav rau Table Length Extrusion
Thaum lub extrusion tau mus rau nws lub rooj ntev, nws yog txiav los ntawm ib tug rhuab saw, cais nws los ntawm extrusion txheej txheem. Nyob rau txhua theem ntawm cov txheej txheem, qhov kub thiab txias plays lub luag haujlwm tseem ceeb. Txawm hais tias lub extrusion yog quenched tom qab tawm hauv xovxwm, nws tseem tsis tau txias tag.
Kauj Ruam 8: Txias Extrusion
Tom qab txiav, lub rooj ntev extrusion yog mechanically txav ntawm qhov khiav tawm mus rau lub rooj txias. Cov kav dej lossis cov kav dej nyob ntawd kom txog thaum lawv mus rau chav sov. Thaum lawv ua, lawv yuav tsum tau ncab.
Kauj Ruam 9: Hloov cov stretcher thiab ncab mus rau Alignment
Qee qhov kev sib tw ntuj tshwm sim hauv cov yeeb nkab lossis cov raj uas yuav tsum tau kho. Txhawm rau kho qhov no, lawv raug xa mus rau ib lub stretcher. Txhua piping los yog tubing yog gripped mechanically ntawm ob qho kawg thiab ncab kom txog thaum nws ncaj thiab coj mus rau qhov tshwj xeeb.
Kauj Ruam 10: Txiav rau Length Extrusion
Nrog lub rooj ntev extrusion tam sim no straightened thiab tag nrho ua hauj lwm-hardened, lawv raug tsiv mus rau lub rooj saw. Ntawm no, lawv raug txiav rau qhov ntau thiab tsawg, feem ntau ntawm 8 mus rau 21 ko taw (6.4 m) ntev. Nyob rau ntawm no, qhov zoo ntawm extrusion sib tw T4 temper. Tom qab txiav, lawv tuaj yeem hloov mus rau qhov cub rau kev laus kom muaj hnub nyoog mus rau T6 lossis T5 temper.
Thawj qhov yuav tsum tau xav txog thaum xaiv ib lub raj aluminium puag ncig yog daim ntawv thov. Aluminium round raj tuaj nyob rau hauv ntau qib, txhua tus muaj cov yam ntxwv tshwj xeeb thiab cov yam ntxwv uas ua rau lawv haum rau kev siv sib txawv. Piv txwv li, 6061-T6 txhuas yog qib nrov rau cov qauv siv vim nws lub zog siab thiab zoo corrosion kuj, thaum 3003 txhuas feem ntau siv rau hauv cov khoom noj thiab dej haus vim nws cov formability zoo heev thiab weldability.
Qhov thib ob yuav tsum xav txog yog qhov loj thiab tuab ntawm aluminium round raj. Qhov loj thiab tuab ntawm lub raj yuav nyob ntawm qhov kev thov tshwj xeeb thiab qhov hnyav uas nws xav tau los txhawb nqa. Piv txwv li, ib txoj kab uas hla loj dua yuav xav tau rau cov ntawv thov uas xav tau lub zog thiab kev txhawb nqa ntau dua, thaum lub raj nyias nyias tuaj yeem tsim nyog rau cov ntawv thov uas yuav tsum muaj qhov hnyav dua.
Qhov thib peb yuav tsum xav txog yog qhov ua tiav ntawm aluminium round raj. Kev sib txawv ntawm qhov sib txawv tuaj yeem cuam tshuam rau kev ua haujlwm thiab cov tsos ntawm lub raj, yog li nws yog ib qho tseem ceeb uas yuav tau xaiv qhov tiav tiav rau koj daim ntawv thov tshwj xeeb. Anodized aluminium, piv txwv li, muaj kev txhim kho corrosion thiab zoo nkauj tiav, thaum lub zeb tiav yuav tsim nyog rau cov ntawv thov uas xav tau kev lag luam ntau dua.
Thaum kawg, nws yog ib qho tseem ceeb uas yuav tau xav txog tus nqi ntawm aluminium round raj. Tus nqi ntawm lub raj yuav nyob ntawm ntau yam, suav nrog qib, qhov loj, tuab, thiab qhov chaw tiav. Nws yog ib qho tseem ceeb kom sib npaug tus nqi ntawm lub raj nrog nws daim ntawv thov los xyuas kom meej tias koj tau txais txiaj ntsig zoo tshaj plaws rau koj cov peev txheej.
Cov ntsiab lus ua haujlwm ntawm Alu Round Tube Vuam
Thawj txheej vuam ntawm alu round raj vuam
Qhov kub thiab txias ntawm thawj txheej vuam (hauv paus vuam) yog qis dua 5 degree, thiab alu round raj vuam yuav tsum tau preheated ntawm 100-150 degree kom tsis txhob pores. Raws li rau alu round raj vuam, qhov vuam specification ntawm tag nrho txoj hauj lwm vuam txoj kev yog tib yam li qhov chaw vuam. Koj yuav tsum pib los ntawm txoj hauj lwm welding overhead, weld ib nrab ntawm lub voj voog mus rau lub tiaj vuam txoj hauj lwm, thiab ces weld lwm ib nrab lub voj voog. Thaum pib welding los ntawm txoj hauj lwm welding upward (thaum 6 teev sawv ntxov ntawm lub moos), lub vuam teeb yog tilted rau pem hauv ntej nrog lub kaum sab xis ntawm =0 degree -10 degree . Thaum welding lwm qhov chaw, lub vuam teeb yog tig rov qab nrog lub kaum sab xis ntawm =0 degree -15 degree .
Nto txheej vuam (npog vuam) ntawm alu round raj vuam
Tom qab thawj txheej ntawm lub alu round raj yog welded, nto ntawm weld seam yuav tsum tau ntxuav nrog ib tug tooj liab hlau txhuam kom tshem tawm stains thiab nplai. Tsis tas li ntawd, txheej txheej saum npoo tuaj yeem welded tom qab txias. Lub degree ntawm txheej txheej vuam yog tib yam li ntawm thawj txheej vuam, thiab nws cov specification yog me ntsis tsis muaj zog dua li ntawm thawj txheej vuam. Qhov ceev ntawm lub teeb txav yuav tsum yog txawm tias kom tau txais qhov zoo, du weld nto rau alu round raj.
Peb lub Hoobkas
Shandong Changquan Aluminium Kev Lag Luam Co., Ltd. yog ib qho kev lag luam niaj hnub uas koom nrog kev tshawb fawb thiab kev tsim kho, tsim, tsim, muag, thiab kev pab cuam ntawm high-end zog-txuag txhuas cov ntaub ntawv, lub teeb yuag aluminium profiles, thiab ntse customized qhov rooj thiab qhov rais. Nws nyob hauv Linyi City, Shandong xeev, lub nroog logistics ntawm Tuam Tshoj. Lub tuam txhab muaj tag nrho cov peev ntawm ze li ntawm 200 lab yuan thiab muaj peev xwm tsim txhua xyoo ntawm 50000 tons ntawm txhuas cov ntaub ntawv. Nws yog ib lub tuam txhab ua lag luam hauv kev ua thiab tsim cov txhuas profile hauv Suav teb.
Qhov kawg FAQ Qhia rau Alu Round Tube
Cim npe nrov: Tuam Tshoj Alu Round Tube manufacturers, lwm tus neeg, Hoobkas
