Maitiro ekugadzira Longitudinal Submerged-arc Welded(LSAW) Pipe ndeaya anotevera:
Ultrasonic plate probing → edge milling → pre-bending → kuumba → Pre-welding → Internal welding→ External welding → Ultrasonic kuongorora → X-ray kuongorora → Kuwedzera → hydraulic test →l.Chamfering → Ultrasonic kuongorora → X-ray kuongorora → magineti particle kuongorora pachubhu kupera
Kugadzira: LSAW(JCOE) Mapombi esimbi
Size : OD: 406 ~ 1500mm WT: 6 ~ 40mm
Giredhi: CB60, CB65, CC60, CC65, zvichingodaro.
Kureba: 12M kana kureba yakatarwa sezvinodiwa.
Inopera: Plain End, Beveled End,Grooved;
| Kemikari ZvinodiwayeASTM A672 B60/B70/C60/C65/C70LSAWCarbon Steel Pipe | |||||||||||||
| Pipe | Giredhi | Kuumbwa,% | |||||||||||
| C max | Mn | P max | S max | Si | Vamwe | ||||||||
| <=1in (25mm) | >1~2in (25~50mm) | >2~4in(50-100mm) | >4~8in (100~200mm) | >8in (200mm) | <=1/2in (12.5mm) | >1/2in (12.5mm) | |||||||
| CB | 60 | 0.24 | 0.21 | 0.29 | 0.31 | 0.31 | 0.98max | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 65 | 0.28 | 0.31 | 0.33 | 0.33 | 0.33 | 0.98max | 0.035 | 0.035 | 0.13–0.45 | ... | |||
| 70 | 0.31 | 0.33 | 0.35 | 0.35 | 0.35 | 1.30max | 0.035 | 0.035 | 0.13–0.45 | ... | |||
| CC | 60 | 0.21 | 0.23 | 0.25 | 0.27 | 0.27 | 0.55–0.98 | 0.79–1.30 | 0.035 | 0.035 | 0.13–0.45 | ... | |
| 65 | 0.24 | 0.26 | 0.28 | 0.29 | 0.29 | 0.79–1.30 | 0.79–1.30 | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 70 | 0.27 | 0.28 | 0.30 | 0.31 | 0.31 | 0.79–1.30 | 0.79–1.30 | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| Mechanical Properties | |||||
| Giredhi | |||||
|
| CB65 | CB70 | CC60 | CC65 | CC70 |
| Kusimba simba, min: | |||||
| ksi | 65 | 70 | 60 | 65 | 70 |
| Mpa | 450 | 485 | 415 | 450 | 485 |
| Goho simba, min: | |||||
| ksi | 35 | 38 | 32 | 35 | 38 |
| MPa | 240 | 260 | 220 | 240 | 260 |
1. Kunze Diameter-Kubva pachiyero che circumferential ± 0.5% yedhayamita yekunze yakatsanangurwa.
2. Kunze-kwe-Roundness-Musiyano pakati pemadhayamita makuru uye maduku kunze.
3. Kurongeka-Kushandisa 10 ft (3m) kutwasanuka kwakaiswa kuitira kuti migumo yose inosangana nepombi, 1/8 mukati. (3mm).
4. Hukobvu-Ukobvu hwemadziro hushoma pane ipi neipi mupombi haifaniri kudarika 0.01 mukati (0.3mm) pasi pehukobvu hunotsanangurwa.
5. Hurefu hune magumo asina kugadzirwa huchava mukati -0+1/2 mukati. (-0+13mm) pane zvakatsanangurwa.Hurefu hune magumo akagadzirwa huchave sekubvumirana pakati pemugadziri nemutengi.
Tension Test-Transverse tensile zvivakwa zvejoint yakasungwa zvinosangana nezvinodiwa zvishoma zvekusimba kwekusimba kweiyo yakatsanangurwa ndiro zvinhu.
Transverse-guided-weld-bent tests —Muedzo wekubhenda uchagamuchirwa kana pasina makatsemuka kana zvimwe zvirema zvinodarika 1/8 in.
Radio-graphic Examination-Kureba kwakazara kweyega yega weld yekirasi X1 uye X2 ichaongororwa radiographic zvichiteerana nekuzadzisa zvinodiwa zveASME Boiler uye Pressure Vessel Code, Chikamu chechinomwe, ndima UW-51.
Zita kana chiratidzo chemugadziri
Nhamba yetsanangudzo (gore-zuva kana zvinodiwa)
Saizi (OD, WT, kureba)
Giredhi (A kana B)
Rudzi rwepombi (F, E, kana S)
Test pressure (seamless simbi pombi chete)
Heat Number
Chero ruzivo rwekuwedzera rwakatsanangurwa muhurongwa hwekutenga.
Huwandu (tsoka, mamita, kana nhamba yehurefu)
Zita rezvinhu (simbi pombi, yemagetsi fusion welded)
Specification number
Giredhi uye kirasi mazita
Saizi (kunze kana mukati dhayamita, yakajairika kana shoma madziro ukobvu)
Urefu (chaicho kana kuti zvisina tsarukano)
End finish
Kutenga zvingasarudzwa
Zvimwe zvinodiwa, kana zviripo.
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