DIN 17175 Boiler Tubes: Yuav Ua Li Cas Kom Tsis Txhob Muaj Qib Tsis Sib Xws, Kev Ncua Sijhawm ntawm Cov Ntaub Ntawv thiab Kev Pheej Hmoo ntawm Kev Muab Khoom

DIN 17175cov raj boilertseem raug xa mus rau hauv cov khoom siv fais fab qub, cov haujlwm boiler kev lag luam, kev txiav txim hloov pauv, thiab cov lus qhia txog kev tsim kho vaj tse European keeb kwm. Txawm li cas los xij, kev nrhiav cov raj no tuaj yeem nyuaj thaum cov neeg yuav khoom ntsib cov npe khoom siv qub, qib tsis meej, cov ntaub ntawv tshuaj xyuas tsis tiav, lossis cov sijhawm xa khoom tsis paub meej.

Rau cov neeg yuav khoom thoob ntiaj teb, qhov teeb meem tseem ceeb tsis yog tsuas yog nrhiav tus neeg muag khoom uas muabDIN 17175 cov yeeb nkab hlau tsis muaj seamlessNws yog qhov lees paub seb cov khoom siv uas tau muab los puas ua tau raws li cov lus qhia tshwj xeeb, cov qauv tam sim no ntawm qhov project, cov ntaub ntawv xav tau, thiab txoj kev npaj xa khoom.

Hauv phau ntawv qhia no, SANONPIPE piav qhia txog yuav ua li cas cov neeg yuav khoom tuaj yeem txo cov kev pheej hmoo ntawm kev yuav khoom thaum nrhiav cov raj boiler DIN 17175 thiab cov khoom sib xwsEN 10216-2cov raj tsis muaj seamless.

1. Vim li cas DIN 17175 Boiler Tube Kev Yuav Khoom Yuav Nyuaj

DIN 17175 yog tus qauv German keeb kwm uas cuam tshuam nrog cov kav hlau tsis muaj seamless rau cov ntawv thov kub siab. Cov neeg yuav khoom tseem yuav ntsib qhov kev xaiv no hauv:

▶ Cov khoom siv fais fab uas twb muaj lawm
▶ Cov haujlwm kho boiler rau kev lag luam
▶ Kev txiav txim hloov cov raj xa dej
▶ Cov duab kos keeb kwm kev tsim kho vaj tse
▶ Cov ntaub ntawv pov thawj ntawm cov khoom siv qub
▶ Cov haujlwm thoob ntiaj teb siv cov ntaub ntawv European qub

Ib qho teeb meem kev yuav khoom feem ntau tshwm sim thaum daim ntawv pov thawj thawj ntawm tus neeg siv khoom qhia txog DIN 17175, tab sis tus neeg muag khoom tam sim no yuav tsum tsim khoom lossis muab cov khoom siv raws li cov lus qhia tshiab dua hauv Tebchaws Europe.

Piv txwv li, cov npe keeb kwm xws liSt 35.8, 15Mo3, 13CrMo44, thiab 10CrMo910tej zaum yuav ntsib nrog rau cov npe khoom siv EN. Cov ntaub ntawv siv hauv kev lag luam qhia txog kev sib raug zoo suav nrogTxoj Kev 35.8thiabP235GH, 15Mo3thiab16Mo3, 13CrMo44thiab13CrMo4-5, thiab 10CrMo910 thiab 10CrMo9-10. Cov ntaub ntawv no yuav tsum tau txheeb xyuas raws li cov kev cai lij choj tag nrho es tsis txhob suav tias yog kev pom zoo rau kev hloov pauv.

Kauj ruam thawj zaug hauv kev nrhiav khoom uas ntseeg tau yog txheeb xyuas cov khoom siv uas xav tau kom raug ua ntej piv tus nqi lossis lub sijhawm xa khoom.

2. DIN 17175 vs EN 10216-2: Paub meej tias Tus Qauv Siv Tau Tam Sim No

Ib qho ntawm cov kauj ruam tseem ceeb tshaj plaws hauvDIN 17175 boiler raj kev yuav khoomtab tom paub qhov txawv ntawm tus qauv keeb kwm uas tau hais hauv cov ntaub ntawv ntawm tus neeg siv khoom thiab tus qauv uas xav tau rau qhov kev txiav txim tam sim no.

EN 10216-2npog cov kav hlau tsis muaj seamless rau lub hom phiaj siab, suav nrog cov kav hlau tsis yog hlau thiab hlau alloy nrog cov khoom kub siab tshwj xeeb. Tus qauv suav nrog cov qib xws liP235GH, 16Mo3, 13CrMo4-5, thiab 10CrMo9-10.

Tus neeg yuav khoom yuav tsum tsis txhob xav tias lub npe DIN keeb kwm tsuas yog hloov tau los ntawm lub npe qib zoo sib xws. Cov ntsiab lus hauv qab no yuav tsum tau saib xyuas:

▶ Lub npe khoom qub
▶ Tus qauv siv tau tam sim no
▶ Qib hlau tseeb
▶ Tus lej khoom siv
▶ Kev kho cua sov
▶ Qhov loj ntawm lub raj
▶ Cov kev cai kuaj thiab tshuaj xyuas
▶ Kev pom zoo los ntawm cov neeg siv khoom lossis kev tsim kho vaj tse

Piv txwv ntawm cov ntaub ntawv keeb kwm thiab tam sim no

Cov ntaub ntawv keeb kwm ntawm DIN

Cov ntaub ntawv EN cuam tshuam

Kev txiav txim siab txog kev yuav khoom

Txoj Kev 35.8 P235GH Paub meej qib, pawg xeem, thiab cov lus qhia tam sim no
15Mo3 16Mo3 Txheeb xyuas cov kev xav tau tshuaj lom neeg thiab khoom siv kho tshuab
13CrMo44 13CrMo4-5 Paub meej tias qib alloy thiab kev kho cua sov
10CrMo910 10CrMo9-10 Xyuas kom meej cov ntaub ntawv xaiv thiab cov kev xav tau ntawm qhov project

Lub rooj no yog rau kev tshuaj xyuas cov ntaub ntawv thawj zaug.Ib qho kev siv qib sib xws tsis yog, los ntawm nws tus kheej, tsim kom muaj kev sib npaug tag nrho lossis kev tso cai rau kev hloov pauv.

3. Tsis txhob muab qib sib txawv: Xyuas kom meej cov khoom ua ntej xaj

Kev Pheej Hmoo: Qib keeb kwm tsis phim cov khoom siv uas tau muab los

Thaum tus neeg yuav khoom thov cov khoom siv DIN 17175, cov tog neeg sib txawv yuav siv cov npe keeb kwm, qib EN, tus lej khoom siv, lossis cov lus piav qhia sab hauv kev yuav khoom. Yog tias cov ntsiab lus no tsis raug kuaj xyuas kom zoo, daim ntawv hais nqe yuav raug npaj rau qib tsis tsim nyog.

Qhov no tuaj yeem ua rau:

▶ Kev piav qhia txog kev siv tshuab ntau zaus
▶ Kev pom zoo ntawm cov neeg siv khoom qeeb
▶ Cov kev cai ntxiv rau kev kuaj mob
▶ Kev tsis lees txais cov khoom
▶ Kev ncua sijhawm tsim khoom lossis kev xa khoom
▶ Cov nqi hloov pauv nce ntxiv

Kev daws teeb meem pom zoo: Siv cov txheej txheem txheeb xyuas cov khoom siv tiav

Ua ntej lees paub qhov kev hais nqe, cov neeg yuav khoom yuav tsum muab cov ntaub ntawv hauv qab no:

1. Lub npe khoom qub

2. Tus qauv tam sim no, yog tias tau teev tseg

3. Qib hlau thiab tus lej khoom siv

4. Sab nraud txoj kab uas hla thiab phab ntsa tuab

5. Qhov ntev thiab qhov ntau ntawm lub raj

6. Daim ntawv thov thiab kev ua haujlwm

7. Kev kho cua sov uas xav tau

8. Cov kev cai rau kev tshuaj xyuas thiab daim ntawv pov thawj

Piv txwv li, ib qho kev thov rau13CrMo4-5 seamless hlau alloy rajyuav tsum tau tshuaj xyuas ua ke nrog tus qauv xav tau, cov xwm txheej xa khoom, qhov loj me, thiab cov kev cai kuaj. EN 10216-2 txheeb xyuas 13CrMo4-5 ua tus lej khoom siv 1.7335 thiab qhia meej txog nws cov kev cai kho cua sov.

Ib lub npe khoom siv xwb tsis txaus los lees paub qhov tsim nyog ntawm cov khoom.

4. Nkag Siab Txog Qhov Txawv Ntawm Cov Qib Boiler Tube Feem Ntau

Txawvseamless boiler raj qibraug xaiv rau cov khoom siv sib txawv. Qib tsim nyog nyob ntawm cov xwm txheej ua haujlwm thiab cov lus qhia engineering siv tau.

P235GH: Cov Hlau Tsis Yog Alloy Rau Kev Pabcuam Kub Siab

P235GH seamless hlau rajyog txuam nrog kev siv siab ntawm qhov kub siab. Qib no yuav cuam tshuam rau cov boiler, cov khoom siv hloov cua sov, thiab cov khoom siv siab.

Cov neeg yuav khoom yuav tsum xyuas kom meej tias:

▶ Seb qhov project puas tau teev tseg P235GH
▶ Pawg kev xeem uas yuav tsum tau ua
▶ Phab ntsa tuab thiab qhov ntev
▶ Cov kev cai kub siab
▶ Kev kho cua sov thiab daim ntawv pov thawj

P235GH yuav tsum tau xaiv raws li qhov tsim cov khoom siv tiag tiag es tsis txhob siv los ua qhov hloov pauv dav dav rau txhua qib DIN 17175 carbon steel yav dhau los.

16Mo3: Molybdenum-Alloy Steel Tubes

16Mo3 seamless hlau rajsiv rau hauv cov ntawv thov kub thiab siab. Qib no cuam tshuam nrog cov ntaub ntawv siv 15Mo3 yav dhau los hauv cov ntaub ntawv sib piv cov khoom siv hauv kev lag luam.

Rau kev txiav txim 16Mo3, cov neeg yuav khoom yuav tsum paub meej tias:

▶ Cov kev cai EN 10216-2 uas siv tau
▶ Kev kho cua sov
▶ Qhov loj ntawm lub raj
▶ Cov kev cai ntawm cov khoom siv kho tshuab thiab tshuaj lom neeg
▶ Cov ntaub ntawv pov thawj yuav tsum tau ua

13CrMo4-5: Chromium-Molybdenum Alloy Steel Tubes

13CrMo4-5 hlau hlau rajsiv rau hauv cov ntawv thov uas xav tau cov khoom ntawm chromium-molybdenum hlau nyob rau hauv qhov kub siab.

Cov chaw thov muaj xws li:

▶ Cov tshuab boiler fais fab
▶ Cov khoom siv cuam tshuam nrog lub zog ua pa
▶ Cov tshuab cua sov rau kev lag luam
▶ Cov khoom siv roj av
▶ Cov khoom siv siab xaiv

Cov khoom siv yuav tsum tau xaiv raws li qhov project tsim qhov kub, siab, kev tsim khoom, thiab tus qauv siv tau.

10CrMo9-10: Cov Khoom Siv Thermal Siab Dua

10CrMo9-10 cov raj tsis muaj seamlessyog lwm qhov kev xaiv EN 10216-2 alloy-steel cuam tshuam nrog cov ntawv thov kub siab. Cov neeg yuav khoom yuav ntsib cov npe keeb kwm 10CrMo910 hauv cov ntaub ntawv qub.

Yuav tsum tau xyuas kom meej qhov qib tseeb ua ntej yuav khoom, tshwj xeeb tshaj yog thaum cov khoom siv yog rau cov khoom siv kub siab.

5. Txo Cov Ntaub Ntawv Ncua Sijhawm nrog Cov Kev Cai Tshuaj Xyuas Kom Tseeb

Kev Pheej Hmoo: Lub raj xa khoom tsis muaj cov ntaub ntawv xav tau

Rau cov haujlwm fais fab thiab cov boiler kev lag luam, cov ntaub ntawv pov thawj khoom siv kuj tseem ceeb ib yam li cov khoom siv tiag tiag. Cov ntaub ntawv tsis tiav lossis tsis sib xws yuav ua rau cov neeg siv khoom pom zoo, ua tiav kev lis kev cai, tshuaj xyuas, lossis lees txais qhov project qeeb.

Cov teeb meem sau ntawv feem ntau muaj xws li:

▶ Lub npe khoom siv tsis raug ntawm daim ntawv pov thawj
▶ Tus lej cua sov ploj lawm
▶ Qhov ntev tsis sib xws
▶ Tsis meej txog kev kho cua sov
▶ Cov txiaj ntsig xeem uas ploj lawm
▶ Kev nrhiav tsis tiav
▶ Qhov txawv ntawm daim ntawv xaj yuav khoom thiab MTC

Kev daws teeb meem pom zoo: Xyuas kom meej cov ntaub ntawv ua ntej tsim khoom

Thaum thovDIN 17175 boiler raj or EN 10216-2 cov raj tsis muaj seamless, cov neeg yuav khoom yuav tsum piav qhia cov ntaub ntawv xav tau ua ntej.

Nyob ntawm qhov kev txiav txim thiab cov lus qhia tshwj xeeb, pob ntawv pov thawj yuav muaj xws li:

▶ Daim Ntawv Pov Thawj Xeem Khoom Siv (MTC)
▶ Cov txiaj ntsig ntawm cov tshuaj lom neeg
▶ Cov txiaj ntsig ntawm kev sim tshuab
▶ Cov ntaub ntawv kho cua sov
▶ Cov ntaub ntawv tshuaj xyuas qhov ntev
▶ Cov ntaub ntawv tshuaj xyuas qhov chaw
▶ Cov txiaj ntsig ntawm kev sim hydrostatic lossis kev pom zoo tsis ua puas tsuaj
▶ Kev nrhiav tau tus lej cua sov
▶ Cov ntaub ntawv tshuaj xyuas sab nraud, thaum xav tau

Cov ntaub ntawv pov thawj tiag tiag nyob ntawm tus qauv siv tau, daim ntawv xaj yuav khoom, qib kev tshuaj xyuas, thiab cov kev xav tau ntawm cov neeg siv khoom.

Kev lees paub cov ntaub ntawv xav tau thaum ntxov pab txo qhov kev ncua sij hawm pom zoo uas zam tau.

6. Kev Kho Mob Kub thiab Kev Ntsuas: Tsis Txhob Cia Siab Rau Lub Npe Qib Xwb

Raucov kav hlau tsis muaj qhov kub thiab txias, kev kho cua sov thiab kev kuaj xyuas yuav tsum tau lees paub raws li tus qauv thiab qib siv tau.

EN 10216-2 suav nrog cov xwm txheej kho cua sov tshwj xeeb rau ntau qib sib txawv. Piv txwv li, cov kev cai hais txog suav nrog cov xwm txheej ib txwm muaj rau P235GH thiab 16Mo3, thaum cov qib xws li 13CrMo4-5 thiab 10CrMo9-10 tau teev tseg cov xwm txheej ib txwm muaj thiab cov xwm txheej tempering.

Yog li ntawd, tus neeg yuav khoom yuav tsum paub tseeb tias:

▶ Seb cov raj yuav tsum kub tiav los yog txias tiav
▶ Yuav tsum tau kho cua sov
▶ Cov kev cai kuaj tshuab
▶ Cov kev cai kuaj tsis ua puas tsuaj
▶ Kev kam rau siab ntawm qhov ntev
▶ Qhov zoo ntawm qhov chaw
▶ Pawg Tshuaj Xyuas
▶ Tsab qauv siv tau

Tus neeg muag khoom yuav tsum tsis txhob lees paub qhov ua raws li tsuas yog raws li keeb kwm DIN yam tsis tau kuaj xyuas cov kev cai ntawm kev txiav txim.

7. Tswj Kev Pheej Hmoo ntawm Kev Muab Khoom: Muaj Tshuag piv rau Kev Tsim Khoom Tshiab

Kev Pheej Hmoo: Cov khoom muaj tsis phim cov kev xav tau ntawm qhov project

Cov neeg siv khoom feem ntau nyiam cov khoom siv hauv Tshuag thaum lub sijhawm kho lossis hloov pauv boiler muaj sijhawm nruj. Txawm li cas los xij, kev muaj khoom hauv Tshuag tsuas yog muaj txiaj ntsig thaum cov khoom siv phim qib, qhov loj me, mob, thiab cov ntaub ntawv xav tau.

Tej teeb meem ntsig txog cov khoom lag luam muaj xws li:

▶ Qib raug tab sis phab ntsa tuab tsis raug
▶ Qhov loj me tsim nyog tab sis tsis txaus
▶ MTC uas ploj lawm los yog tsis tiav
▶ Cov lej cua sov sib txawv thoob plaws qhov kev txiav txim
▶ Cov khoom siv uas yuav tsum tau kuaj xyuas ntxiv
▶ Cov Tshuag uas tsis ua raws li cov neeg siv khoom tau teev tseg lossis cov kev cai kuaj

Kev daws teeb meem pom zoo: Tshuaj xyuas cov khoom lag luam thiab cov kev xaiv tsim khoom ua ke

Ib qho txhim khu kev qhatus neeg muag khoom boiler rajyuav tsum pab tus neeg yuav khoom soj ntsuam txoj kev nrhiav khoom raws li qhov project cov kev cai thiab kev xa khoom.

Daim ntawv tshuaj xyuas yuav muaj xws li:

Kev muab khoom lag luam

▶ Qib thiab qhov ntev ntawm cov khoom siv uas twb muaj lawm
▶ Muaj pes tsawg
▶ MTC thiab kev taug qab tau
▶ Kev tshuaj xyuas xwm txheej
▶ Lub sijhawm ntim khoom thiab xa khoom

Kev tsim khoom tshiab

▶ Kev ua tau zoo ntawm kev tsim khoom
▶ Yam tsawg kawg nkaus kom muaj nuj nqis
▶ Cov kev cai tsim khoom thiab kev kho cua sov
▶ Kev npaj tshuaj xyuas
▶ Kwv yees lub sijhawm tsim khoom thiab xa khoom

SANONPIPE tuaj yeem sib koom tes tshuaj xyuaskev muab khoom siv hlau tsis muaj seamless, cov kev xaiv Tshuag, cov kev cai tsim khoom tshiab, cov ntaub ntawv tshuaj xyuas, thiab kev npaj xa khoom tawm raws li cov lus nug ntawm cov neeg siv khoom.

Yuav tsum paub tseeb tias muaj khoom thiab lub sijhawm xa khoom rau txhua yam khoom siv thiab kev txiav txim; lawv yuav tsum tsis txhob xav los ntawm tus qauv teev tseg ib leeg xwb.

8. SANONPIPE Pab Cov Neeg Yuav Khoom Txo Cov Teeb Meem Kev Yuav Khoom Li Cas

Rau cov neeg siv khoom xaiv cov khoomDIN 17175 boiler raj, cov txheej txheem yuav khoom feem ntau muaj ntau dua li kev txheeb xyuas lub npe khoom. Nws xav tau kev piav qhia txog kev siv tshuab, kev tshuaj xyuas cov khoom siv, kev sib koom tes ntawm cov ntaub ntawv, thiab kev npaj xa khoom.

SANONPIPE tsom mus rau kev pab cov neeg siv khoom daws cov teeb meem kev yuav khoom hauv qab no:

Kev txheeb xyuas cov khoom siv

Peb tuaj yeem tshuaj xyuas cov ntaub ntawv keeb kwm DIN, cov ntaub ntawv EN qib tam sim no, cov lej khoom siv, thiab cov ntaub ntawv kev siv tshuab uas cov neeg siv khoom muab los ua ib feem ntawm cov txheej txheem hais nqe.

Kev sib phim ntawm cov lus qhia

Cov neeg siv khoom tuaj yeem muab daim ntawv teev cov raj, daim duab kos, cov lus qhia yuav khoom, lossis MTC rau kev tshuaj xyuas cov qauv, qib, qhov ntev, thiab cov kev cai xeem uas xav tau.

Kev sib koom tes ntawm cov khoom lag luam thiab kev tsim khoom tshiab

Nyob ntawm cov khoom siv thiab qhov ntau uas tau thov, SANONPIPE tuaj yeem soj ntsuam cov kev xaiv nrhiav khoom muaj thiab sib koom tes tsim khoom lossis kev npaj khoom siv.

Cov ntaub ntawv tshuaj xyuas

Cov ntaub ntawv xav tau tuaj yeem piav qhia meej ua ntej lees paub qhov kev txiav txim kom pab txo qhov tsis sib xws ntawm daim ntawv yuav khoom, cov khoom siv, thiab cov ntaub ntawv tshuaj xyuas.

Kev txhawb nqa kev xa khoom thoob ntiaj teb

Rau cov haujlwm xa tawm, kev ntim khoom hauv raj, kev sib koom tes xa khoom, thiab kev npaj xa khoom yuav tsum tau saib xyuas raws li cov lus qhia tshwj xeeb ntawm cov khoom thiab cov kev xav tau ntawm qhov chaw xa khoom.

Peb lub hom phiaj yog los pab cov neeg siv khoom txiav txim siab meej dua txog cov khoom siv thiab txo cov kev pheej hmoo uas zam tau thaum lub sijhawm yuav cov yeeb nkab hlau.

9. Daim Ntawv Teev Cov Neeg Yuav Khoom: Ua Ntej Thov Daim Ntawv Hais Txog DIN 17175 Boiler Tube

Siv daim ntawv teev cov lus nug no thaum npaj ib qho kev nug rauDIN 17175 seamless boiler rajlossis cov khoom lag luam EN 10216-2 cuam tshuam.

▶ Lub npe DIN 17175 qub

▶ Tus qauv siv tau tam sim no, yog tias tau teev tseg

▶ Qib hlau thiab tus lej khoom siv tseeb

▶ Sab nraud txoj kab uas hla thiab phab ntsa tuab

▶ Qhov ntev thiab qhov ntau ntawm lub raj

▶ Daim ntawv thov thiab hom khoom siv

▶ Qhov kub thiab siab ntawm tus qauv tsim

▶ Kev kho cua sov uas xav tau

▶ Cov kev cai kuaj thiab tshuaj xyuas

▶ MTC thiab cov kev cai nrhiav tau

▶ Cov kev cai tshuaj xyuas sab nraud, yog tias muaj

▶ Hnub xa khoom yuav tsum tau

▶ Chaw nres nkoj lossis qhov chaw xa khoom

Kev muab cov ntaub ntawv no thaum lub sijhawm hais nqe tuaj yeem pab tus neeg muag khoom ntsuam xyuas cov kev cai lij choj kom raug dua thiab txo qhov kev piav qhia tsis tsim nyog.

Xaus Lus: Ua kom DIN 17175 Boiler Tube Procurement Txhim Khu Kev Ntshaw Ntau Dua

Kev yuav khoomDIN 17175 boiler rajtuaj yeem cuam tshuam txog cov teeb meem ntsig txog cov ntaub ntawv keeb kwm, cov qauv European tam sim no, kev txheeb xyuas qib, cov ntaub ntawv sau tseg, thiab kev npaj xa khoom.

Yuav kom txo tau kev pheej hmoo ntawm kev yuav khoom, cov neeg yuav khoom yuav tsum:

1. Paub meej tias lub npe keeb kwm thiab tus qauv siv tau tam sim no.

2. Xyuas kom tseeb tias cov hlau qib thiab cov khoom siv yog dab tsi.

3. Txuas cov khoom siv rau cov xwm txheej ua haujlwm thiab cov lus qhia ntawm qhov project.

4. Paub meej tias yuav tsum tau kho cua sov, kuaj, thiab MTC ua ntej.

5. Soj ntsuam cov khoom muaj thiab cov kev xaiv tsim khoom tshiab raws li kev ua raws li kev siv tshuab thiab kev xa khoom.

Seb koj xav tauP235GH cov raj tsis muaj qhov txuas, 16Mo3 cov raj hlau, 13CrMo4-5 cov raj hlau sib xyaw, lossis lwm yam khoom EN 10216-2, SANONPIPE tuaj yeem txhawb koj qhov kev tshuaj xyuas kev siv tshuab thiab cov txheej txheem nrhiav khoom.

Xa koj daim ntawv teev cov raj, cov ntaub ntawv qhia txog cov khoom siv, daim duab kos, lossis cov kev cai yuav khoom rau peb. SANONPIPE yuav pab koj saib xyuas cov ntaub ntawv muab khoom thiab sib koom tes daws teeb meem rau koj lub boiler, kev tsim hluav taws xob, lossis cov khoom siv hauv kev lag luam.


Lub sijhawm tshaj tawm: Cuaj hlis-23-2026

Tianjin Sanon Steel Pipe Co., LTD.

Chaw Nyob

Pem teb 8. Jinxing Building, No 65 Hongqiao Area, Tianjin, Suav

Xov tooj

+86 15320100890

WhatsApp

+86 15320100890