Tshuaj muaj pes tsawg leeg ntawm AS 1074 Steel Pipe
Cov raj yuav tsum tau tsim los ntawm cov hlau uas muaj leej faj cov ntsiab lus tsis ntau tshaj 0.045 feem pua thiab cov ntsiab lus phosphorus tsis ntau tshaj 0.045 feem pua. Cov pa roj carbon sib npaug, raws li xam los ntawm qhov sib npaug hauv qab no, yuav tsum tsis pub tshaj 0.4:Carbon sib npaug=C + Mn/6
| Cov ntsiab lus ntawm AS / NZS 1074 Pipes | Max % |
| S | 0.05% |
| P | 0.045 |
| CE | 0.40% |
Mechanical Properties ntawm AS 1074 Pipes
| AS/NZS 1074 Mechanical Properties | Yam tsawg kawg nkaus |
| Yield zog (MPa) | 195 |
| Tensile zog (MPa) | 320 |
| Elongation (%) | 20 |
Qhov Loj thiab Qhov Loj ntawm AS 1074 Pipe
| Loj | Chav kawm | OD (mm) | WT (hli) | Qhov hnyav (Plain End) (kg / mtr.) | Qhov hnyav (Socket) (kg / mtr.) | Pcs / Pob | ||
| DN | Ntiv | Min | Max | |||||
| 15 | 1⁄2″ | L | 21 | 21.4 | 2.00 | 0.947 | 0.956 | 217 |
| 20 | 3⁄4″ | L | 26.4 | 26.9 | 2.30 | 1.380 | 1.390 | 127 |
| 25 | 1″ | L | 33.2 | 33.8 | 2.60 | 1.980 | 2.000 | 91 |
| 32 | 11⁄4″ | L | 41.9 | 42.5 | 2.60 | 2.540 | 2.570 | 61 |
| 40 | 11⁄2″ | L | 47.8 | 48.4 | 2.90 | 3.230 | 3.270 | 61 |
| 50 | 2″ | L | 59.6 | 60.2 | 2.90 | 4.080 | 4.150 | 37 |
| 65 | 21⁄2″ | L | 75.2 | 76 | 3.20 | 5.710 | 5.830 | 37 |
| 80 | 3″ | L | 87.9 | 88.7 | 3.20 | 6.720 | 6.890 | 19 |
| 100 | 4″ | L | 113 | 113.9 | 3.60 | 9.750 | 10.000 | 19 |
| 15 | 1⁄2″ | M | 21.1 | 21.7 | 2.60 | 1.210 | 1.220 | 217 |
| 20 | 3⁄4″ | M | 26.6 | 27.2 | 2.60 | 1.560 | 1.570 | 127 |
| 25 | 1″ | M | 33.4 | 34.2 | 3.20 | 2.410 | 2.430 | 91 |
| 32 | 11⁄4″ | M | 42.1 | 42.9 | 3.20 | 3.100 | 3.130 | 61 |
| 40 | 11⁄2″ | M | 48 | 48.8 | 3.20 | 3.570 | 3.610 | 61 |
| 50 | 2″ | M | 59.8 | 60.8 | 3.60 | 5.030 | 5.100 | 37 |
| 65 | 21⁄2″ | M | 75.4 | 76.6 | 3.60 | 6.430 | 6.550 | 37 |
| 80 | 3″ | M | 88.1 | 89.5 | 4.00 | 8.370 | 8.540 | 19 |
| 100 | 4″ | M | 113.3 | 114.9 | 4.50 | 12.200 | 12.500 | 19 |
| 125 | 5″ | M | 138.7 | 140.6 | 5.00 | 16.600 | 17.100 | 13 |
| 150 | 6″ | M | 164.1 | 166.1 | 5.00 | 19.700 | 20.300 | 10 |
| 15 | 1⁄2″ | H | 21.1 | 21.7 | 3.20 | 1.440 | 1.450 | 217 |
| 20 | 3⁄4″ | H | 26.6 | 27.2 | 3.20 | 1.870 | 1.880 | 127 |
| 25 | 1″ | H | 33.4 | 34.2 | 4.00 | 2.940 | 2.960 | 91 |
| 32 | 11⁄4″ | H | 42.1 | 42.9 | 4.00 | 3.800 | 3.830 | 61 |
| 40 | 11⁄2″ | H | 48 | 48.8 | 4.00 | 4.380 | 4.420 | 61 |
| 50 | 2″ | H | 59.8 | 60.8 | 4.50 | 6.190 | 6.260 | 37 |
| 65 | 21⁄2″ | H | 75.4 | 76.6 | 4.50 | 7.930 | 8.050 | 37 |
| 80 | 3″ | H | 88.1 | 89.5 | 5.00 | 10.300 | 10.500 | 19 |
| 100 | 4″ | H | 113.3 | 114.9 | 5.40 | 14.500 | 14.800 | 19 |
| 125 | 5″ | H | 138.7 | 140.6 | 5.40 | 17.900 | 18.400 | 13 |
| 150 | 5″ | H | 164.1 | 166.1 | 5.40 | 21.300 | 21.900 | 10 |
Kev tsim khoom Tolerances ntawm AS 1074
| AS 1074 Manufacturing Parameter | Ua siab ntev |
| Sab nraud | Saib Dimension Table saum toj no |
| Phab ntsa Thickness | -8%, + unlimited (Lub teeb) |
| -10%, + unlimited (nruab nrab thiab hnyav) | |
| Kev ncaj | 0.20% ntawm tag nrho Length |
| Pawg | ± 4% |
| Unit Length | ± 0.08m |
Thickness Identification ntawm AS 1074
Ua ntej tawm hauv cov chaw tsim khoom, cov raj yuav tsum tau muab cais los ntawm cov xim ntawm ib kawg raws li cov lus hauv qab no:
| Thickness Identification | |
| Ntxiv Teeb | Ntsuab |
| Teeb | Daj |
| Nruab nrab | Xiav |
| Hnyav | Liab |
Ntsia Hlau Threads ntawm AS 1074
Txhawm rau kom ntseeg tau tias Screw threads ntawm tag nrho cov threaded raj ua raws li AS 1722.1, nws yog ib qho tseem ceeb uas qhov haum haum ntxiv rau qhov ntev ntawm cov yeeb nkab threads ntawm series R thiab RC rau qhov tshwj xeeb nominal loj, tsis pub tshaj 80% ntawm qhov sib npaug ntawm Lub Teeb Tube qhov ntev ntawm cov xov tseem ceeb. Qee zaum, qhov kev txwv qis ntawm sab nraud tuaj yeem ua rau "dub" threads (zoo meej ntawm cov hauv paus hniav thiab tsis zoo ntawm lub crest), tab sis cov no yuav tsum tsis txhob raug suav tias yog kev ncaj ncees rau kev tsis lees txais cov hlab. Tag nrho cov raj yuav tsum tau muab threaded nrog taper yeeb nkab threads.
Kev xeem thiab kev tshuaj xyuas ntawm AS 1074
- Kev Ntsuas Tightness
• Online NDT
• Hydro-test
– Khoov Test
Tubes yog ib feem tseem ceeb ntawm ntau daim ntawv thov kev lag luam, thiab nws yog ib qho tseem ceeb uas lawv muaj peev xwm tiv taus qee yam kev thauj khoom thiab kev ntxhov siab. Ib qho kev sim no yog qhov kev sim khoov, uas txiav txim siab lub raj muaj peev xwm tiv thaiv kev puas tsuaj los yog ua tsis tau raws li kev quab yuam.
• Tubes Tsawg dua lossis sib npaug rau DN50- Kev ntsuam xyuas yog ua los ntawm kev tso lub raj rau hauv lub tshuab khoov, nrog lub vuam ntawm 90℃kaum rau lub dav hlau ntawm dabtsi yog khoov. Lub raj yog tom qab ntawd khoov txias nyob ib puag ncig ib puag ncig nrog lub vojvoog uas tsim nyog rau cov raj tshwj xeeb raug kuaj. Rau cov raj ungalvanized, lub vojvoog no yuav tsum sib npaug li 6 npaug ntawm sab nraud ntawm lub raj; rau galvanized raj, nws yuav tsum yog 8 npaug ntawm sab nraud txoj kab uas hla ntawm lub raj. Yog hais tias lub raj tsis tawg los yog muaj cov cim qhia tias tsis ua hauj lwm thaum lub sij hawm tus txheej txheem no, nws yog xam tias tau dhau qhov kev xeem.
• Tubes ； DN50- Raws li cov lus qhia tshwj xeeb, rau cov raj tiav uas loj dua DN50 nyob rau hauv txoj kab uas hla, rings txiav los ntawm qhov kawg ntawm cov raj xaiv yuav tsum muaj tsawg kawg yog 40mm nyob rau hauv ntev thiab muaj peev xwm yuav flattened ntawm ob daim hlau thaum uas tig mus. Lub vuam, yog tias muaj ib qho, yuav tsum nyob ntawm 90℃lub kaum sab xis nyob rau hauv kev sib raug zoo rau qhov taw tes ntawm qhov siab tshaj plaws khoov. Tsis tas li ntawd, tsis muaj qhov qhib lossis tawg yuav tsum tshwm sim hauv qhov vuam kom txog rau thaum qhov kev ncua deb ntawm daim hlau yog tsawg dua 75% ntawm qhov qub sab nraud ntawm lub raj. Yuav tsum tsis txhob muaj cov kab nrib pleb lossis tawg hauv cov hlau uas tshwm sim nyob rau lwm qhov kom txog thaum qhov kev ncua deb ntawm cov phiaj yog tsawg dua 60% ntawm thawj sab nraud ntawm lub raj. Raws li qhov tsim nyog, cov nplhaib xeem yuav muaj lawv cov npoo sab hauv thiab sab nraud sib npaug.
