Helical-seam carbon Steel pipe Astm a139 giredhi a, b, c
Mechanical Pfuma
| Giredhi a | Giredhi b | Giredhi c | Giredhi d | Giredhi e | |
| BAILD Simba, Min, MPA (KSI) | 330 (48) | 415 (60) | 415 (60) | 415 (60) | 445 (66) |
| Simba Resimba, Min, MPA (KSI) | 205 (30) | 240 (35) | 290 (42) | 315 (46) | 360 (52) |
Chemical Composition
| Element | Kuumbwa, max,% | ||||
| Giredhi a | Giredhi b | Giredhi c | Giredhi d | Giredhi e | |
| Kabhoni | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Phosphorous | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Sarufa | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Hydrostatic test
Kureba kwepepe kuchaidzwa nemugadziri kune hydrostatic kumanikidza kuchagadzira madziro kushushikana kwekushaiwa makumi matanhatu muzana yeiyo yakasarudzika shuwa simba rekubereka tembiricha. Dzvinyiriro ichatsanangurwa neiyo inotevera equation:
P = 2st / d
Zvinotenderwa kusiyana kwehuremu uye zviyero
Kureba kwega kwega kwembwa kucharemerwa zvakasiyana uye kurema kwayo hakuzopindirane kupfuura gumi muzana pamusoro kana 5.5% pasi pehuremu hwayo uye huremu hwayo uye huremu hwayo pahurefu.
Iyo yekunze dhisiki haizosiyane kupfuura ± 1% kubva pane yakatarwa zita rekunze kunze kwedhimoni.
Kukudza kwemadziro chero nguva hakusi kupfuura gumi nemairi% pasi peiyo yakataurwa madziro.
Kureba
Hurefu hwakasarudzika: 16 kusvika 25ft (4.88 kusvika 7.62m)
Kaviri akareba kureba: Pamusoro pe25ft kusvika ku15ft (7.62 kusvika 10.67m)
Yunifomu Yakareba: Inotenderwa Kusiyana ± 1in
Magumo
Pipe Piles ichagadzirwa nebani magumo, uye burrs kumahombekombe
Kana iyo pombi yekupedzisira yakatsanangurwa kuve yechiodzwa magumo, iyo angle ichave nemakumi matatu kusvika ku35 degree
