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Khoom npe: |
erw lub cev |
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Tawm Dia: |
15 x 15 - 250 x 250 mm |
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Thickness: |
0 7 - 12mm |
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Ntev: |
6m, 12m lossis raws li cov neeg siv khoom xav tau |
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Cov yeeb nkab kawg |
Plain. |
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Nto: |
Dub pleev xim rau, Roj. |
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Txheem: |
ASTM A500, JIS G3466, EN10219, GB / T6728 |
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Qib: |
Qib A, B, C, D, STKR400, STKR490, S235JR, S355JR.Q195-Q355 |
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Daim ntawv thov: |
Kev tsim kho, steel qauv. |
Keeb kwm ntawm ERW Rectangular raj
William Murdock tau ua qhov kev sib tw ua rau cov txheej txheem niaj hnub ntawm cov yeeb nkab vuam. Nyob rau hauv 1815 nws tau tsim ib lub teeb hluav taws xob hluav taws xob thiab xav ua kom muaj rau tag nrho London. Siv cov thoob los ntawm pov tseg muskets nws tsim ib tug nruam yeeb nkab xa cov thee roj rau lub teeb. Xyoo 1824 James Russell patented ib txoj hauv kev los ua cov raj hlau uas ceev thiab pheej yig. Nws tau koom nrog qhov kawg ntawm cov hlau tiaj tiaj ua ke los ua ib lub raj ces welded cov pob qij txha nrog cua sov. Xyoo 1825 Comelius Whitehouse tsim cov txheej txheem "butt-weld", lub hauv paus rau kev tsim cov yeeb nkab niaj hnub.
Kev txhim kho ntawm ERW lub raj raj
Whitehouse txoj kev tau txhim kho thaum xyoo 1911 los ntawm John Moon. Nws cov txheej txheem tso cai rau cov tuam txhab tsim cov kwj ntawm cov yeeb nkab txuas ntxiv. Nws tsim cov tshuab uas siv nws cov txheej txheem thiab ntau cov chaw tsim khoom tau txais nws. Tom qab ntawd qhov kev xav tau tshwm sim rau seamless hlau kav. Seamless yeeb nkab tau pib tsim los ntawm drilling ib lub qhov los ntawm qhov chaw ntawm lub tog raj kheej. Txawm li cas los xij, nws yog ib qho nyuaj rau kev xyaum qhov nrog cov precision xav tau los xyuas kom meej uniformity ntawm phab ntsa thickness. Ib qho kev txhim kho xyoo 1888 tau tso cai rau kev ua tau zoo dua los ntawm kev ua cov pob zeb nyob ib ncig ntawm lub pob zeb hluav taws kub. Tom qab txias, lub cib raug tshem tawm, tawm hauv ib lub qhov rau hauv nruab nrab.
Kev nce qib kev tshawb fawb tau txhim kho zoo heev ntawm txoj kev pob tw-weld ntawm cov yeeb nkab ua tau tsim los ntawm Whitehouse. Nws cov txheej txheem tseem yog thawj txoj hauv kev siv los ua cov kav dej, tab sis cov cuab yeej tsim khoom niaj hnub no uas tuaj yeem tsim qhov kub thiab txias siab tau ua rau cov yeeb nkab ua tau zoo dua. Raws li nws txoj kab uas hla, qee cov txheej txheem tuaj yeem tsim cov welded seam yeeb nkab ntawm qhov tsis txaus ntseeg ntawm 1,100 ko taw ib feeb. Nrog rau qhov kev nce siab loj ntawm tus nqi ntawm cov kav hlau steel tuaj txhim kho qhov zoo ntawm cov khoom kawg.
Thaum koj txiav txim siab yuav erw lub raj raj, koj yuav tsum xaiv cov khoom tsim nyog raws li koj qhov kev xav tau tiag tiag kom tsis txhob poob qhov tsis tsim nyog vim qhov kev xaiv tsis raug. Yog tias koj xav paub ntau ntxiv, thov hu rau Tianjin KaiDa.
Kev soj ntsuam zoo
Ntim & Thawv Loading
Cim npe nrov: Tuam Tshoj Rectangular Tube Manufacturers thiab lwm tus neeg - Tuam Tshoj Hoobkas - ERW Rectangular Tube
