ASTM A672 B60/B70/C60/C65/C70 LSAW(JCOE) Pipe ea Tšepe ea Carbon kee sebelisoa maemong a khatello e phahameng mme e sebelisoa haholo setsing sa motlakase, indastering ea oli e kantle ho naha, indasteri ea lik'hemik'hale, Fertilizer, lik'hemik'hale tsa petrochemical, lihloekisi joalo-joalo.
ASTM A672 B60/B70/C60/C65/C70LSAW(JCOE) Pipe ea Tšepe ea Khabonee tla ba li-welld tse peli, tse kenang ka ho feletseng tse entsoeng ho latela mekhoa ea tsamaiso le ke li-welders kapa li-welding operators tse tšoanelehang ho latela ASME Boiler le khatello ea Vessel Code, Karolo ea IX.
Lihlopha tsohle tse ling ntle le 10, 11, 12 le 13 li tla phekoloa mocheso ka sebōping se laoloang ho ± 15 ℃ 'me li be le hydrometer ea ho rekota e le hore litlaleho tsa ho futhumatsa li fumanehe.
Moetso:Longitudinally Submerged Arc Welding(LSAW).
Boholo:OD: 406 ~ 1422mm WT: 8 ~ 60mm.
Kereiti:B60, C60, C65, joalo-joalo.
Bolelele:3-12M kapa bolelele bo boletsoeng kamoo ho hlokahalang.
E qetella:Qetello e Hlakang, Qetello e Beveled, e Khōlō.
| Litlhoko tsa lik'hemik'hale bakeng sa ASTM A672 B60/B70/C60/C65/C70 LSAW Pipe ea tšepe ea Carbon | ||||||||||||
| Pipe | Kereiti | Moetso, % | ||||||||||
| C max | Mn | P max | S max | Si | Ba bang | |||||||
| <=1in (25mm) | >1~2in (25~50mm) | >2~4in(50-100mm) | > 4~8in (100~200mm) | >8in (200mm) | </=1/2in (12.5mm) | >1/2in (12.5mm) | ||||||
| 60 | 0.24 | 0.21 | 0.29 | 0.31 | 0.31 | 0.98 max | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 65 | 0.28 | 0.31 | 0.33 | 0.33 | 0.33 | 0.98 max | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 70 | 0.31 | 0.33 | 0.35 | 0.35 | 0.35 | 1.30 max | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| C | 55 | 0.18 | 0.20 | 0.22 | 0.24 | 0.26 | 0.55–0.98 | 0.55–1.30 | 0.035 | 0.035 | 0.13–0.45 | ... |
| 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 | ... | |
| Thepa ea Mechini | |||||||
| Kereiti | |||||||
|
| B60 | B65 | B70 | C55 | C60 | C65 | C70 |
| Matla a tsitsitseng, min: | |||||||
| ksi | 60 | 65 | 70 | 55 | 60 | 65 | 70 |
| Mpa | 415 | 450 | 485 | 380 | 415 | 450 | 485 |
| Ho hlahisa matla, min: | |||||||
| ksi | 32 | 35 | 38 | 30 | 32 | 35 | 38 |
| MPa | 220 | 240 | 260 | 205 | 220 | 240 | 260 |
| Litlhokahalo tsa Elongation: Ho ea ka maemo | |||||||
1. Diameter e ka Ntle-Ho ipapisitsoe le tekanyo e potolohileng ± 0.5% ea bophara bo boletsoeng ka ntle.
2. Out-of-Roundness-Phapang pakeng tsa boholo le tse nyenyane ka ntle didiameter.
3. Ho tsamaisana-Ho sebelisa 10 ft (3m) ho otloloha ho behoa e le hore lipheletsong ka bobeli li kopane le phala, 1/8 ka hare (3mm).
4. Botenya-Botenya bo fokolang ba lebota sebakeng leha e le sefe sa phala ha boa lokela ho feta 0.01 in. (0.3mm) tlas'a botenya bo boletsoeng ka lebitso.
5. Bolelele bo nang le lipheletso tse sa sebetsanoang bo tla ba ka hare ho -0+1/2 in. (-0+13mm) ho tse boletsoeng.Bolelele bo nang le lipheletso tse entsoeng ka mochini bo tla ba joalo ka ha ho lumellanoe pakeng tsa moetsi le moreki.
Teko ea Tension - Thepa e fapaneng ea lenonyeletso le cheselitsoeng e tla fihlela litlhoko tse tlase bakeng sa matla a ho qetela a matla a poleiti e boletsoeng.
Transverse-tataisa-weld-bent liteko -The koba teko e tla amoheleha haeba ho se mapetsong kapa likoli tse ling tse fetang 1/8 in. (3mm) ka tsela efe kapa efe ba teng ka tšepe tjheseletsa kapa pakeng tsa tjheseletsa le tšepe botlaaseng ka mor'a ho kobeha.
Radio-graphic Examination-Bolelele bo felletseng ba weld ka 'ngoe ea sehlopha sa X1 le X2 bo tla hlahlojoa ka radiographic ho latela le ho fihlela litlhoko tsa ASME Boiler le Pressure Vessel Code, Karolo ea bosupa, serapa sa UW-51.
Peipi e felileng e ke ke ea e-ba le mefokolo e kotsi 'me e tla ba le qetello e kang ea mosebetsi.
A. Lebitso kapa letšoao la moetsi.
B. Nomoro e hlalosang (selemo-letsatsi kapa e hlokahalang).
C. Size( OD, WT, bolelele).
D. Kereiti(A kapa B).
E. Mofuta oa peipi( F, E, kapa S).
F. Khatello ea teko (peipi ea tšepe e se nang moeli feela).
G. Nomoro ea Mocheso.
H. Tlhahisoleseding efe kapa efe e eketsehileng e boletsweng taelong ya theko.
● Peipi e se nang letho kapa e Ntšo / Varnish / Coating ea Epoxy / 3PE (ho ea ka litlhoko tsa bareki);
● 6"'me ka tlas'a dingata tse nang le matjeketjane a mabeli a k'hothone;
● Ka bobeli li qetella ka ba sireletsang qetellong;
● Qetello e hlakileng, qetello ea bevel(2"le ka holimo e nang le lipheletso tsa bevel, tekanyo: 30 ~ 35 °), e kopantsoeng le ho kopanya;
● Ho tšoaea.
