Yuav ua li cas txheeb xyuas cov kav hlau tsis zoo thiab tsis zoo:
1. Cov kav hlau tsis zoo thiab tsis zoo ntawm cov kav hlau yog qhov yooj yim rau folding. Folds yog ntau txoj kab uas tsim rau ntawm cov kav dej tuab-walled steel. Qhov kev tsis zoo no feem ntau khiav thoob plaws qhov kev taw qhia longitudinal ntawm cov khoom. Yog vim li cas rau folding yog tias shoddy manufacturers nrhiav kev ua tau zoo thiab qhov txo qis heev, ua rau pob ntseg. Folding yuav tshwm sim thaum lub sij hawm dov txheej txheem tom ntej. Cov khoom ntim yuav tawg tom qab khoov, thiab lub zog ntawm cov hlau yuav raug txo kom tsawg.
2. Cov kav hlau tsis zoo thiab tsis zoo ntawm cov phab ntsa tuab feem ntau muaj pitted nto ntawm qhov chaw. Pockmarking yog qhov tsis sib xws tsis sib xws ntawm cov hlau nto uas tshwm sim los ntawm kev hnav hnyav ntawm qhov dov zawj. Raws li cov chaw tsim khoom ntawm cov yeeb nkab tuab-walled steel tau txais txiaj ntsig, zawj dov feem ntau tshaj tus qauv.
3. Qhov saum npoo ntawm fake tuab-walled steel kav yog nquag mus caws pliav. Muaj ob qho laj thawj: (1). Cov khoom siv ntawm cov kav hlau tsis zoo thiab tsis zoo yog qhov tsis sib xws thiab muaj ntau yam impurities. (2). Cov khoom siv qhia ntawm cov khoom cuav thiab cov khoom lag luam tsis zoo yog qhov yooj yim thiab yooj yim rau lo rau hlau. Cov impurities no tuaj yeem yooj yim ua rau caws pliav tom qab cov chais.
4. Qhov saum npoo ntawm cov kav dej tsis zoo thiab tsis zoo tuab-walled steel yog qhov ua rau tawg vim nws cov khoom siv raw yog adobe, uas muaj ntau qhov pores. Lub adobe yuav raug thermal stress thaum lub sij hawm txias txias, ua rau tawg, thiab cov kab nrib pleb tshwm tom qab dov.
5. Cov kav hlau tsis zoo thiab tsis zoo yog qhov yooj yim rau khawb. Yog vim li cas yog tias cov cuab yeej ntawm cov khoom cuav thiab cov tsis zoo tuab-walled steel yeeb nkab manufacturers yog qhov yooj yim thiab yooj yim los tsim burrs thiab khawb qhov saum npoo ntawm cov hlau. Sib sib zog nqus khawb txo lub zog ntawm cov hlau.
6. Cov kav hlau tsis zoo thiab tsis zoo tuab-walled steel kav tsis muaj hlau nplaum thiab muaj lub teeb liab lossis xim zoo ib yam li npua hlau. Muaj ob qho laj thawj. Ib qho yog tias nws qhov khoob yog adobe. Qhov thib ob yog tias qhov kub dov ntawm cov khoom cuav thiab cov khoom tsis zoo steel tsis yog tus qauv. Lawv cov hlau kub yog ntsuas los ntawm kev tshuaj xyuas qhov muag. Nyob rau hauv txoj kev no, dov tsis tuaj yeem ua tiav raws li thaj chaw austenite, thiab kev ua haujlwm ntawm cov hlau yuav tsis ua raws li cov qauv.
7. Lub transverse ribs ntawm fake thiab inferior tuab-walled steel kav yog nyias thiab qis, thiab lawv feem ntau tshwm rau underfilled. Yog vim li cas yog tias kom ua tiav qhov tsis zoo siab ntev, qhov txo qis ntawm thawj ob peb kis ntawm cov khoom tiav yog loj dhau, cov hlau zoo li me dhau, thiab lub qhov qauv tsis tau sau.
8. Ntu ntu ntawm cov yeeb nkab tuab tuab-walled steel yeeb nkab yog oval. Yog vim li cas thiaj li txuag tau cov ntaub ntawv, cov chaw tsim khoom siv qhov txo qhov loj dua hauv thawj ob qhov kev hla ntawm cov menyuam tiav. Lub zog ntawm hom rebar no txo ​​qis heev, thiab nws tsis ua raws li tag nrho qhov ntev ntawm lub rebar. qauv.
9. Cov txheej txheem ntawm cov hlau tsis sib xws, lub tonnage ntawm lub tshuab txias shear yog siab, thiab lub ntsej muag kawg ntawm lub taub hau txiav yog du thiab zoo. Txawm li cas los xij, vim cov khoom siv tsis zoo, lub ntsej muag kawg ntawm lub taub hau ntawm cov khoom cuav thiab cov khoom tsis zoo feem ntau muaj qhov tshwm sim ntawm cov nqaij poob, uas yog, nws tsis sib npaug thiab tsis muaj xim hlau. Thiab vim tias cov khoom tsim los ntawm cov khoom cuav thiab cov khoom lag luam tsis zoo muaj lub taub hau tsawg dua, pob ntseg loj yuav tshwm sim ntawm lub taub hau thiab tus Tsov tus tw.
10. Cov khoom siv ntawm cov yeeb nkab tuab-walled steel muaj ntau yam impurities, qhov ntom ntawm cov hlau yog me me, thiab qhov loj me yog qhov tsis txaus siab, yog li nws tuaj yeem hnyav thiab kuaj tsis muaj vernier caliper. Piv txwv li, rau rebar 20, tus qauv qhia tias qhov siab tshaj qhov tsis zoo siab yog 5%. Thaum qhov ntev ntev yog 9M, qhov theoretical hnyav ntawm ib tus pas nrig yog 120 kg. Nws qhov hnyav tsawg kawg nkaus yuav tsum yog: 120X (l-5%) = 114 kg, hnyav Yog tias qhov tseeb qhov hnyav ntawm ib thooj yog tsawg dua 114 kilograms, nws yog cov hlau tsis zoo vim tias nws qhov siab tsis zoo siab tshaj 5%. Feem ntau hais lus, cov txiaj ntsig ntawm kev sib koom ua ke ntawm qhov hnyav yuav zoo, feem ntau yog xav txog cov teeb meem ntawm kev ua yuam kev thiab qhov tshwm sim ntawm kev xav.
11. Lub puab txoj kab uas hla ntawm fake thiab inferior tuab-walled steel kav fluctuates heev vim hais tias ntawm: 1. Lub unstable steel kub muaj ib tug yin thiab yang sab. ②. Qhov sib xyaw ntawm cov hlau tsis sib xws. ③. Vim cov khoom siv raw thiab lub hauv paus tsis tshua muaj zog, lub dov zeb muaj qhov loj bounce. Yuav muaj kev hloov loj hauv txoj kab uas hla hauv tib lub lis piam. Xws li kev ntxhov siab tsis sib xws ntawm cov hlau tuav yuav yooj yim ua rau tawg.
12. Cov cim kev lag luam thiab luam ntawv ntawm cov yeeb nkab tuab-walled steel yog tus qauv.
13. Rau cov xov loj nrog txoj kab uas hla ntawm 16 lossis ntau dua rau peb lub kav hlau, qhov kev ncua deb ntawm ob lub cim lag luam yog siab dua IM.
14. Lub longitudinal tuav ntawm shoddy steel rebar feem ntau wavy.
15. Cov fake thiab inferior tuab-walled steel yeeb nkab manufacturers tsis muaj kev lag luam, yog li lub ntim kuj yog xoob. Cov sab yog oval.

Welded yeeb nkab txheej txheem ntws: uncoiling - flattening - kawg shearing thiab welding - looper - sib sau - vuam - sab hauv thiab sab nraud weld hlaws tshem tawm - pre-correction - induction tshav kub kho - sizing thiab straightening - eddy tam sim no soj ntsuam - txiav - hydraulic tshuaj xyuas - pickling - kev tshuaj xyuas zaum kawg - ntim