ASTM A500 Hollow Structural Steel Tubes Chaw tsim tshuaj paus thiab tsum - Brisk Steel
| Txuj | ASTM A500 / A500M |
| Khoom siv | Carbon steel yeeb nkab |
| Tsim | Txias- ua welded thiab seamless |
| Qib | Qib B, Qib C, thiab Qib D |
| Tawm Dia | Tsawg dua los yog sib npaug rau 88 hauv [2235 mm] |
| Phab ntsa Thickness | Tsawg dua los yog sib npaug rau 1 hauv [25.4 mm] |
| Ntev | 1.5-18 hli |
| Nto Txheej | Varnishing, Dub, Oiling, Kub Dip Galvanizing |
| Hom kawg | Square txiav, Bevelled, Threaded, Grooved |
ASTM A500 yog dab tsi?
Tshuaj muaj pes tsawg leeg
| Kev xav tau tshuaj | ||||
| Element | Kev sib xyaw,% | |||
| Qib B, D | Qib C | |||
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Kev Ntsuas Kub
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Kev tshuaj xyuas khoom
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Kev Ntsuas Kub
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Kev tshuaj xyuas khoom
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| C, MaxA | 0.26 | 0.30 | 0.23 | 0.27 |
| Mn, MaxA | 1.35 | 1.40 | 1.35 | 1.40 |
| P, Max | 0.035 | 0.045 | 0.035 | 0.045 |
| S, Max | 0.035 | 0.045 | 0.035 | 0.045 |
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Cu, MinB |
0.20 | 0.18 | 0.20 | 0.18 |
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ARau txhua qhov txo qis ntawm 0.01 feem pua ntawm cov ntsiab lus qis dua qhov siab tshaj plaws rau cov pa roj carbon, qhov nce ntawm 0.06 feem pua ntawm cov ntsiab lus siab tshaj qhov tau teev tseg rau manganese tau tso cai, nce mus txog qhov siab tshaj plaws ntawm 1.50% los ntawm kev ntsuas cua sov thiab 1.60% los ntawm kev tshuaj xyuas cov khoom.
BYog tias tooj liab - muaj cov hlau tau teev nyob rau hauv daim ntawv xaj yuav khoom.
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Kev kho cua sov
- Qib D tubing yuav tsum tau kho cua sov ntawm qhov kub tsawg kawg yog 1100℃F (590 degree) rau ib teev ib nti (25.4 hli) ntawm thickness.
- ASTM A500 tso cai rau txhua qib kom muaj kev ntxhov siab -relieved los yog annealed.
Mechanical Properties
| Round, Square, Rectangular, thiab Tshwj Xeeb Tubular Shapes | |||
| / | Qib B | Qib C | Qib D |
| Tensile zog, min | 58000 psi [400 MPa] | 62000 psi [425 MPa] | 58000 psi [400 MPa] |
| Yield zog, min | 46000 psi [315 MPa] | 50000 psi [345 MPa] | 36000 psi [250 MPa] |
| Elongation hauv 2 nti (50 mm), min, %C | 23 A | 21 B | 23 A |
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ASiv rau cov phab ntsa thicknesses (t) sib npaug los yog siab tshaj 0.180 in. [4.57mm]. Rau qhov sib zog teev cov phab ntsa thicknesses, qhov tsawg kawg nkaus elongation qhov tseem ceeb yuav tsum tau xam los ntawm cov mis: feem pua elongation nyob rau hauv 2 in. [50 mm]=61t+ 12, sib npaug mus rau qhov ze feem pua. Rau A500M siv cov qauv hauv qab no: 2.4t+ 12, sib npaug mus rau qhov ze tshaj plaws.
CQhov tsawg kawg nkaus elongation qhov tseem ceeb tau teev tseg tsuas yog siv rau cov kev sim ua ntej xa khoom ntawm cov tubing. |
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Flattening Test, Flaring Test, thiab Wedge Crush Test
- Round structural raj yog raug rau kev sim flattening thiab flaring xeem (Tawm Diameter Tsawg dua los yog sib npaug rau 10 in.)
- Square lossis rectangular structural raj yog raug rau kev sim flattening, flaring test, los yog wedge crush test.
Dimensional kam rau ua
Tolerance nyob rau sab nraud
- Rounds structural tubing:
| Specified Sab Nraud Loj Loj Loj, hauv [mm] | Tso cai hloov pauv ntau dhau thiab nyob rau hauv qhov tshwj xeeb sab nraud tiaj tus qhov ntev, hauv [mm] |
| Tsawg dua los yog sib npaug li 2 hauv [50 mm] | ±0.5% |
| ＞ 2 hauv [50 mm] | ±0.75% |
- Square thiab rectangular structural tubing:
| Specified Sab Nraud Loj Loj Loj, hauv [mm] | Tso cai hloov pauv ntau dhau thiab nyob rau hauv qhov tshwj xeeb sab nraud tiaj tus qhov ntev, hauv [mm] |
| Tsawg dua los yog sib npaug rau {{0}/2 [65] | 0.020 [0.5] |
| ＞2 1/2 – Tsawg dua lossis sib npaug rau 3 1/2 [＞65 – Tsawg dua lossis sib npaug rau 90] | 0.025 [0.6] |
| ＞3 1/2 – Tsawg dua lossis sib npaug rau 5 1/2 [＞90 – Tsawg dua lossis sib npaug rau 140] | 0.030 [0.8] |
| ＞5 1/2 [140] | 0.01 npaug loj tiaj tus dimension |
Kev kam rau ntawm phab ntsa Thickness
- ± 10% cov phab ntsa thickness (tsis suav nrog thickness ntawm weld txoj hauj lwm).
- Welded structural tubing: Yog hais tias lub vuam sab hauv tau raug tshem tawm los ntawm welded steel yeeb nkab, lub thickness ntawm qhov chaw vuam yog tsis tsawg tshaj li 90% ntawm cov phab ntsa thickness.
- Square thiab rectangular structural tubing: Phab ntsa thickness yuav tsum tsuas yog siv rau hauv nruab nrab ntawm lub dav hlau.
Tolerance ntawm Ntev
| Length Tolerances rau Specific Lengths Structural Tubing | ||
| Ntev | Tsawg dua los yog sib npaug li 22 ft [6.5 m] | 22 ft [6.5 m] |
| Tolerances | -1/4 in. – +1/2 in. [-6 mm – +13 mm] | -1/4 in. – +3/4 in. [-6 mm – +19 mm] |
Tolerance ntawm Ncaj
Qhov kev tso cai hloov pauv rau qhov ncaj ntawm cov qauv tubing yuav tsum yog 1/8 nyob rau hauv. lub sij hawm tus naj npawb ntawm ko taw [10 hli zaus tus naj npawb ntawm meters] ntawm tag nrho ntev muab faib los ntawm 5.
Tolerance ntawm Squareness ntawm Sab
Rau square thiab rectangular structural tubing, sab nyob ib sab yuav tsum square (90 degree), nrog ib tug tso cai variation ntawm ± 2℃max.
Tolerance ntawm Radius ntawm Corners
Rau square thiab rectangular structural tubing, lub vojvoog ntawm txhua lub ces kaum sab nraud ntawm ntu yuav tsum tsis pub tshaj peb zaug ntawm phab ntsa thickness.
Tolerance ntawm Twist
| Specified Otuside Loj Flat Dimension, hauv [mm] | Qhov siab tshaj plaws kev hloov pauv hauv Twist ib 3 ft ntawm qhov ntev [Twist ib Meter ntawm Length], hauv [mm] |
| Ntau dua los yog sib npaug rau {{0}/2 [40] | 0.050 [1.3] |
| ＞1 1/2 – Tsawg dua lossis sib npaug rau 2 1/2 [＞40 – Tsawg dua lossis sib npaug rau 65] | 0.062 [1.6] |
| ＞2 1/2 – Tsawg dua lossis sib npaug rau 4 [＞65 – Tsawg dua lossis sib npaug rau 100] | 0.075 [1.9] |
| ＞ 4 - Tsawg dua lossis sib npaug rau 6 [＞ 100 - Tsawg dua lossis sib npaug rau 150] | 0.087 [2.2] |
| ＞ 6 - Tsawg dua lossis sib npaug rau 8 [＞ 150 - Tsawg dua lossis sib npaug rau 200] | 0.100 [2.5] |
| ＞8 [200] | 0.112 [2.8] |
Hu rau US
BRISK STEELyog lub hom phiaj ntawm hollow seem chaw tsim tshuaj paus thiab cov chaw muag khoom muaj cov cuab yeej tsim khoom zoo tshaj plaws thiab cov kab ntau lawm, feem ntau yog siv ntau yam khoom siv thev naus laus zis xws li ERW, LSAW, SEAMLESS, thiab lwm yam, los tsim ntau yam tshwj xeeb ntawm hollow seem steel.
Yog li tiv tauj peb kom tau txais tus nqi tshiab ntawmASTM A500 1Hollow Structral Section dawb.