A500M Gr A Cold formed Hollow Square Section piav qhia
A500 GRA txias- ua hollow structural tubingyog ib hom steel tubing uas ua raws li tus qauv ASTM A500, tshwj xeeb yog Qib A (GRA).
ASTM A500 Txuj: Qhov no yog qhov tshwj xeeb los ntawm ASTM International rau txias - ua welded thiab seamless carbon steel structural tubing nyob rau hauv rounds, squares, thiab rectangles. Qib A (GRA) qhia qhov tsawg kawg nkaus tensile lub zog thiab tawm los lub zog yuav tsum, nrog rau lwm yam khoom siv thiab tshuaj lom neeg.
Yam ntxwv:
Siab zog: Vim yog qhov txias txias- txheej txheem tsim, cov tubing nthuav tawm muaj zog thiab rigidity.
Dimensional raug: Cov txheej txheem tsim khoom kom paub meej qhov ntev, uas yog qhov tseem ceeb rau kev siv cov qauv.
Corrosion Resistance: Thaum galvanized los yog coated, lub raj muaj kev tiv thaiv zoo heev rau corrosion, ncua nws lub neej kev pab cuam.
Ntau yam: Nws tuaj yeem txiav tau yooj yim, welded, thiab fabricated kom tau raws li qhov project tshwj xeeb.
ASTM A500 RECTANGULAR STEEL TUBE Qib thiab tshuaj muaj pes tsawg leeg (％) thiab cov cuab yeej cuab tam
|
Hlau |
Tshuaj muaj pes tsawg leeg % max. |
Mechanical Property |
||||||||
|
C |
Mn |
P |
S |
Cu |
Tensile zog |
Tensile zog |
Yield zog |
Yield |
Elongation hauv 2 nti (50mm) min, % |
|
|
GR.A |
0.3 |
1.4 |
0.045 |
0.045 |
0.18 |
310 |
45000 |
230 |
33000 |
25 |
|
GR.B |
0.3 |
1.4 |
0.045 |
0.045 |
0.18 |
400 |
58000 |
290 |
42000 |
23 |
|
GR.C |
0.27 |
1.4 |
0.045 |
0.045 |
0.18 |
425 |
62000 |
315 |
46000 |
21 |
|
GR.D |
0.3 |
1.4 |
0.045 |
0.045 |
0.18 |
400 |
58000 |
250 |
36000 |
23 |
Sab nraum Dimensional Tolerances ntawm Square Hollow Section
| Sab Nraud Loj Loj Loj | Loj Flat Dimension Tolerance |
|---|---|
| Tshaj 5½ (139.7) | 0.01 npaug loj tiaj tus dimension |
| Tshaj 2½ txog 3½ (63.5 txog 88.9) | 0.025 (0.64) |
| 2½ (63.5) lossis qis dua | 0.020 (0.51) |
| Tshaj 3½ txog 5½, inc | 0.030 (0.76) |
Txheej txheem ntau lawm:
Kev xaiv khoom: High-cov pa roj carbon steel coils los yog cov ntawv zoo raug xaiv los ua cov khoom siv raw, ua kom lawv ua tau raws li cov khoom siv tshuaj lom neeg thiab khoom siv ntawm ASTM A500 Qib A (GRA) tus qauv.
Uncoiling thiab Leveling: Cov hlau coils yog uncoiled thiab leveled los npaj rau txoj kev tsim.
Txias txoj kev: Cov qib steel sawb yog pub rau hauv ib lub zeb tsim, qhov uas nws maj mam zoo li mus rau hauv ib puag ncig, square, los yog duab plaub hollow seem los ntawm ib tug series ntawm rollers ntawm chav tsev kub. Cov txheej txheem no txhim kho lub zog thiab precision ntawm lub raj.
Vuam: Raws li cov npoo ntawm cov sawb tuaj ua ke thaum lub sij hawm tsim, lawv tau welded siv high - zaus vuam los yog lwm yam tsim nyog vuam txoj kev los tsim ib tug nruam, seamless - saib raj.
Sizing thiab Straightening: Lub welded raj dhau los ntawm sizing rolls kom ua tiav qhov ntev thiab tom qab ntawd los ntawm kev sib tw ncaj nraim kom ntseeg tau tias nws ncaj thiab muaj tseeb.
Txiav: Lub raj txuas txuas yog txiav mus rau qhov xav tau ntev.
Kev kho saum npoo: Cov tubing tuaj yeem raug cov txheej txheem xws li galvanizing (kub-dip lossis electro{1}}galvanizing) los muab kev tiv thaiv corrosion. Lwm yam kev kho mob saum npoo xws li pleev xim lossis hmoov txheej kuj tuaj yeem siv raws li cov neeg siv khoom xav tau.
Kev tshuaj xyuas thiab kuaj: Cov tubing tiav raug tshuaj xyuas rau qhov tseeb qhov tseeb, qhov pom kev tsis pom kev, thiab yuav raug kuaj xyuas txhua yam (xws li kev ntsuas tensile thiab khoov) kom ntseeg tau tias nws ua tau raws li ASTM A500 GRA tus qauv.
Daim ntawv thov:
Kev tsim kho thiab kev tsim vaj tsev: Siv dav hauv kev tsim cov ncej, kab, kab teeb, thiab trusses vim nws lub zog siab - rau - qhov hnyav piv. Nws muab cov qauv kev txhawb nqa hauv vaj tse, kev lag luam, thiab kev lag luam.
Infrastructure Projects: Ua hauj lwm hauv cov choj, hla hla, thiab kev thauj mus los rau nws cov kav ntev thiab thauj khoom -cov kabmob muaj peev xwm.
Mechanical thiab Industrial Applications: Siv nyob rau hauv fabrication ntawm machinery thav duab, conveyor systems, thiab cov cuab yeej txhawb nqa qhov twg lub zog thiab qhov tseeb qhov tseeb yog qhov tseem ceeb.
Fencing thiab Railing Systems: Nws corrosion kuj (tshwj xeeb tshaj yog thaum galvanized) ua rau nws haum rau sab nraum zoov fencing, tes tuav, thiab guardrails.
Automotive thiab Tsheb thauj mus los: tuaj yeem siv rau hauv kev tsim cov tsheb thauj khoom, lub cev tsheb thauj mus los, thiab lwm yam khoom siv thauj mus los rau nws qhov hnyav thiab muaj zog.
Agricultural Structures: Siv nyob rau hauv cov tsev ua liaj ua teb, tsev cog khoom, thiab cov kav dej vim nws tsis kam tiv thaiv ib puag ncig.
Kev kuaj thiab tshuaj xyuas
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