Carbon Steel Rectangular Tubing
Yuav los ntawm Tuam Tshoj carbon steel Rectangular tubing Peb yog koj lub hlwb!
Tso koj txoj kev tshawb nrhiav tam sim no thiab nyob nrog peb, vim tias --
1. Peb lav muab koj cov kav hlau zoo dua li lwm tus ntawm tib tus nqi.
2.Peb yuav tsum nug koj tus nqi qis dua li lwm tus uas zoo ib yam.
3. 80% ntawm cov neeg muas zaub tshiab reorder rau peb!
carbon steel Rectangular tubing, Nws yog ib hom ntawm hollow square cross section lub teeb nyias-phab ntsa steel yeeb nkab, tseem hu ua steel tub yees khoov seem.Nws yog ua los ntawm Q235 kub dov los yog txias dov sawb hlau los yog coil phaj raws li cov khoom siv los ntawm kev khoov txias thiab tom qab ntawd los ntawm kev siv vuam ntau zaus ua los ntawm cov duab plaub thiab qhov loj ntawm cov hlau.Ntxiv rau qhov thickening ntawm phab ntsa, kaum qhov loj thiab ntug flatness ntawm kub dov ntxiv-thick phab ntsa square raj ncav cuag lossis txawm tshaj li qib ntawm kev tiv thaiv vuam txias sib sau square raj.
Carbon Steel Rectangular Tubing Classification
Seamless steel raj thiab welded steel raj (welded yeeb nkab) kub dov seamless square raj, txias kos seamless square raj, extrusion seamless square raj, welded square raj.
Lub welded square yeeb nkab yog muab faib ua:
1, raws li cov txheej txheem: arc vuam square tube, tsis kam vuam square raj (siab zaus, tsis tshua muaj zaus), roj vuam square raj, rauv vuam square raj;
2, raws li cov weld - ncaj seam vuam square yeeb nkab, kauv vuam square yeeb nkab
Carbon Steel Rectangular Tubing Identification Method
1. Cov yeeb nkab tsis zoo thiab tsis zoo yog yooj yim rau quav.Folding yog ntau yam ntawm cov kab tawg tsim nyob rau saum npoo ntawm ib lub raj raj.Qhov kev tsis zoo no feem ntau khiav los ntawm qhov ntev ntev ntawm cov khoom.Yog vim li cas rau lub folding yog vim hais tias ntawm kev nrhiav cov high efficiency ntawm fake thiab inferior manufacturers, lub siab yog loj, lub pob ntseg yog tsim, tom ntej no dov yog folded, cov khoom folded yuav tawg tom qab khoov, thiab lub zog ntawm steel raug txo qis heev.
2. Cov tsos ntawm cov yeeb nkab duab plaub feem ntau muaj pockmarked phenomenon.Pockmarks yog qhov tsis sib xws thiab tsis sib xws ntawm cov hlau nto uas tshwm sim los ntawm kev hnav hnyav ntawm dov zawj.Groove dov feem ntau tshaj tus qauv vim yog kev nrhiav cov txiaj ntsig ntawm shoddy rectangular yeeb nkab manufacturers.
3. Qhov saum npoo ntawm cov yeeb nkab tsis zoo thiab tsis zoo yog qhov yooj yim los tsim cov caws pliav.Muaj ob qho laj thawj: (1).Fake rectangular tube khoom tsis sib xws, impurities.(2).Shoddy manufacturers qhia cov cuab yeej yooj yim, yooj yim rau lo rau hlau, cov impurities no
4. Shoddy cov ntaub ntawv nto yooj yim rau tawg, yog vim li cas nws cov billet yog adobe, adobe pores, adobe nyob rau hauv cov txheej txheem txias vim lub luag hauj lwm ntawm thermal stress, tawg, tom qab dov muaj cov kab nrib pleb.
5. Shoddy rectangular yeeb nkab yog ib qho yooj yim mus khawb, yog vim li cas shoddy rectangular yeeb nkab chaw tsim tshuaj paus khoom yog yooj yim, yooj yim los tsim burr, khawb cov hlau nto.Sib sib zog nqus khawb txo lub zog ntawm cov hlau.
6. Fake rectangular raj tsis muaj xim hlau luster, lub teeb liab los yog vim li cas rau ob lub ntsiab lus, nws cov billet yog adobe.The dov kub ntawm shoddy cov ntaub ntawv tsis yog tus qauv, lawv cov hlau kub ntsuas qhov muag pom, yog li nws tsis tuaj yeem dov raws li qhov teev tseg. austenite cheeb tsam, thiab kev ua tau zoo ntawm cov hlau tsis tuaj yeem ncav cuag tus qauv.
7. Cov hlaws hla ntawm cov khoom cuav thiab cov kab tsis zoo yog nyias thiab qis, uas feem ntau tshwm sim los ntawm kev tsis txaus siab.Yog vim li cas yog tias cov chaw tsim khoom muaj lub siab ntev tsis zoo thiab lub siab ntawm thawj ob peb kab ntawm cov khoom tiav
8. Qhov hla ntawm lub raj xaim cuav yog oval, qhov laj thawj yog vim li cas cov chaw tsim khoom kom txuag tau cov ntaub ntawv, lub siab ntawm cov menyuam tiav nyob rau hauv pem hauv ntej ntawm ob yog loj, lub zog ntawm lub rebar no zoo heev txo, tab sis kuj tsis ua raws li tus qauv ntawm cov duab loj ntawm rebar.
9. Cov muaj pes tsawg leeg ntawm cov hlau zoo sib xws, lub tonnage ntawm lub tshuab txias shearing yog siab, thiab lub ntsej muag kawg ntawm lub taub hau txiav yog du thiab huv si.Vim tias cov khoom siv tsis zoo ntawm cov khoom cuav thiab cov khoom tsis zoo, lub ntsej muag kawg ntawm lub taub hau txiav feem ntau muaj qhov tshwm sim ntawm cov nqaij poob, uas yog, qhov tsis sib xws thiab tsis yog xim hlau.Thiab vim tias cov chaw tsim khoom lag luam txiav lub taub hau tsawg dua, lub taub hau thiab tus Tsov tus tw tuaj yeem tshwm pob ntseg loj.
10. Cov khoom siv lub raj lub raj tsis zoo muaj ntau yam impurities, qhov ntom ntawm cov hlau yog me me, thiab qhov loj yog tsis kam rau qhov tsis muaj vernier caliper, nws tuaj yeem ntsuas thiab kuaj xyuas.Piv txwv li, rau rebar 20, lub teb chaws tus qauv qhia tias qhov siab tshaj plaws tsis zoo siab ntev yog 5%.Thaum ntsuas 9M, nws qhov theoretical qhov hnyav ntawm ib cag yog 120kg, thiab nws qhov hnyav tsawg kawg nkaus yuav tsum yog: 120x (L-5%) = 114kg.Qhov tseeb qhov hnyav ntawm ib lub hauv paus ntsuas yog me dua 114kg, yog li nws yog fake hlau %.Feem ntau, cov lej ntau ua haujlwm zoo dua, feem ntau yog vim qhov ua yuam kev thiab qhov tshwm sim ntawm qhov kev xav.
11. Lub puab txoj kab uas hla ntawm shoddy rectangular yeeb nkab fluctuates heev, rau cov nram qab no yog vim li cas: steel kub instability muaj Yin - Yang nto.Qhov sib xyaw ntawm cov hlau tsis sib xws.Vim tias cov cuab yeej siv tau yooj yim, lub hauv paus muaj zog yog qhov tsawg, lub zeb bounce yog loj.Yuav muaj kev hloov pauv loj dua nyob rau tib lub lim tiam, kom qhov kev txhawb nqa tsis sib xws thiab yooj yim tawg.
12. Cov cim lag luam thiab luam ntawv ntawm cov raj zoo yog tus qauv zoo heev.
13. Qhov sib nrug ntawm cov kab plaub hau nrog cov kab uas hla tshaj 16 yog siab dua IM.
Lub longitudinal tuav ntawm shoddy steel rebar feem ntau wavy.
Carbon Steel Rectangular Tubing A Formula los xam
2 [(a - d - 2 r + PI (d / r + 2) / 2 + (b - d - 2 r + PI (d / r + 2) / 2) x7.85 d (kg), a, b rau qhov ntev thiab dav (m), r (m) rau plaub fab ntawm lub raj kab noj hniav, ncig arc vojvoog, d rau phab ntsa thickness (mm).
| Yam khoom | MS hollow me me square erw square thiab duab plaub Hlau Yeeb thiab Tubes |
| Khoom siv | SPHC, Q195, Q215, Q235, Q345, SAE1010, SAE1020, API Standard khoom, ASTM A53 A, B |
| Phab ntsa thickness | 0.5-20 hli |
| sab nraud txoj kab uas hla | SHS: 15 * 15-400 * 400mm, RHS: 20 * 25-400 * 300mm |
| Ntev | 2m-12m lossis raws li cov neeg siv khoom xav tau |
| Thickness kam rau ua | + 5% - |
| Kev kho saum npoo | Dub painting / varnished nto, anti-corrosion roj, galvanized |
| Cov yeeb nkab kawg | Plain kawg |
| Kos npe | Raws li tus neeg siv khoom xav tau |
| International Standard | ASTM A500, GB / T6728-2002, ASTM A500, ASTM A500, GB / T6728-2002, ASTM A500, GB / T6728-2002, ASTM A500, GB / T6728-2002, ASTM A500 |
| Kev siv | Mechanical & manufacture, Steel qauv, Shipbuilding, Bridging, Tsheb chassis |
| Daim ntawv pov thawj | ISO, BV, API |
| ODM / OEM | muaj |
Cov ntsiab lus ntawm Cov Khoom Siv
| Qib | C | Mn | Si | S | P | UTS (MPa) | YS (MPa) | EI (%) |
| q235 ib | 0.12-0.20 Nws | 0.30-0.70 Nws | 0.30 Nws | 0.045 ib | 0.045 ib | 375-500 : kuv | 235 | 26 |
| q345 ib | 0.12-0.20 Nws | 1.20-1.60 Nws | 0.20-0.55 Nws | ≤ 0.045 | ≤ 0.045 | 510-600 Nws | 345 | 22 |
| 20 # (GB) | 0.17-0.23 dr hab | 0.38-0.65 Nws | 0.17-0.37 Nws | ≤ 0.030 | ≤ 0.030 | 410-550 : kuv | ≥245 | ≥ 20 |
Khoom Qhia
