| NGA WHAKAMAHI MO LSAW STEEL PIPE | |
| 1.Rahi | 1)OD:406mm-1500mm |
| 2) Te Matotoru o te taiepa: 8mm-50mm | |
| 3)SCH20,SCH40,STD,XS,SCH80 | |
| 2. Paerewa: | ASTM A53,API 5L,EN10219,EN10210,ASTM A252,ASTM A500etc |
| 3.Materi | ASTM A53 Gr.B,API 5L Gr.B,X42,X52,X60,X70,X80,S235JR,S355J0H, etc |
| 4.Whakamahinga: | 1) iti te pehanga wai, te wai, te hau, te hinu, te paipa raina |
| 2) hanga putorino, hanga puranga paipa | |
| 3) taiapa, paipa tatau | |
| 5. Whakakikorua | 1) Karekau 2) Pania Pango (pani pania) 3) He piauau 4) Whakahinuhia 5) PE, 3PE, FBE, whakakikorua whakakikoruatia, paninga anti corrosion |
| 6. Hangarau | paipa maitai paiherea roa |
| 7. Tirotiro: | Ma te Hyd raulic Testing, Eddy Current, RT, UT, he tirotiro ranei na te hunga tuatoru |
| 8. Tukunga | Ipu, Waka Nui. |
| 9.Mo To Tatou Kounga: | 1) Kaore he pakaru, kaore he piko 2) karekau he tara, he tapa koi, karekau he pakaru 3) Kore utu mo te hinu me te tohu 4) Ka taea te tirotiro i nga taonga katoa ma te tirotiro tuatoru i mua i te tuku |
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Longitudinal Submerged-arc Welded(LSAW) Ko te paipa e whakamahi ana i te hangarau pewa kua ruku ki raro, ma te whakamahi i te whakakii whakakii, te pewa whakamarumaru matūriki kua tanumia.
Ko te LSAW te whakarāpopototanga reo Ingarihi o te pewa submerged paiherea paipa maitai tui tika.Ko te tukanga whakaputa o te pewa kua rukuhia he paipa tira whiri tika kei roto ko te hangarau hanga JCOE, te hangarau whakahiato pewa ruku me te hangarau hanga UOE.
Ko te tukanga o te hanga Longitudinal Submerged-arc Welded(LSAW) Pipe e whai ake nei:
Te tirotiro i te pereti ultrasonic → te mira tapa → te piko o mua → te hanga → Te mahi i mua i te whakapiri → te whakapiri o roto → te whakapiri o waho → te tirotiro i te Ultrasonic → te tirotiro hihi X → te whakawhānui → te whakamatautau waipēhi →l.Chamfering → Tirotiro ultrasonic → tirotiro X-ray → tirotiro matūriki autō i te pito ngongo
| Nga Whakaritenga Tensile | |||
| Kōeke 1 | Kōeke 2 | Kōeke 3 | |
| Te kaha matara, min, psi (MPa) | 50 000 (345) | 60 000 (415) | 66 000 (455) |
| Ira tuku, kaha tuku ranei, min, psi(MPa) | 30 000 (205) | 35 000 (240) | 45 000 (310) |
| Te whakaroa iti mo te matotoru pakitara whakaingoa %6 in. (7.9 mm) neke atu ranei: Te whakaroa i te 8 in. (203.2 mm), min, % Te whakaroa i te 2 in. (50.8 mm), min, % | 18 30 | 14 25 | ... 20 |
| Mo nga matotoru pakitara whakaingoa iti iho i te %6 in. (7.9 mm), ka heke te tangohanga mai i te whakaroatanga iti rawa i roto i te 2 in. (50.08 mm) mo ia Vzi - in. (0.8 mm) ka heke iho te matotoru pakitara whakaingoa i raro i te %6 in. (7.9 mm), i roto i te ōrau | 1.5A | 1.25A | 1.0A... |
Whakamatau Hydrostatic
Whakamātautau NDT(RT).
Whakamātautau NDT(UT).
Whakamatau Piko—he pai te roa o te putorino me tu tonu ka piko i te matao ki te 90° huri noa i te mandrel porotakaroa.
Whakamātautau whakarata-ahakoa kaore e hiahiatia he whakamatautau, ka taea e te paipa te whakatutuki i nga whakaritenga whakamatautau papatahi.
Te whakamatautau wai-pateko—engari ka whakaaetia, ka tukuna ia roa o te putorino ki te whakamatautau wai-pateko me te kore e pakaru i te pakitara paipa.
Te whakamatautau hiko kore-hei rereke ki te whakamatautau wai-pateko, ka whakamatauria te tinana katoa o ia paipa ki te whakamatautau hiko kore kino.ki te mahia he whakamatautau hiko kore kino, me tohu nga roa ki nga reta "NDE"
Ko te whakamatautau ultrasonic
Ko te whakamātautau eddy nāianei
Pupa kore, paninga pango ( whakaritea);
Ko nga pito e rua me nga kaitiaki mutunga;
Ko te pito maama, ko te pito piko;
Te tohu.
| Ko te Diamita o waho | Ko te diameter o waho o nga puranga paipa kaua e rereke atu i te ±1% mai i te diameter o waho kua tohua. | ||
| Te matotoru o te pakitara | Ko te matotoru o te pakitara i tetahi waahi kaua e neke ake i te 12.5% i raro i te matotoru pakitara kua tohua. | ||
| Te roa | Ko nga putu paipa me hoatu ki nga roa matapōkere kotahi, ki nga roa matapōkere rua, ki nga roa riterite ranei kua tohua i roto i te ota hoko, i runga i nga rohe e whai ake nei: | Nga roa matapōkere kotahi | 16 ki te 25ft (4.88 ki te 7.62mm), inihi |
| Nga roa matapōkere rua | Neke atu i te 25ft (7.62m) me te iti rawa o te 35ft (10.67m) | ||
| Te roa o te rite | te roa i tohua me te rerekee whakaaetia o ±1 inihi. | ||
| Taumaha | Ko ia roa o te puranga paipa me pauna motuhake, a kaua e rereke te taumaha i te 15% neke atu ranei i te 5% i raro i tona taumaha ariā, ka tatauhia ma te whakamahi i tona roa me tona taumaha mo ia waeine roa. | ||
