ASTM A672 B60/B70/C60/C65/C70 LSAW(JCOE) Dhuumaha Birta Kaarboon waaloo isticmaalo xaalad cadaadis-sare oo inta badan loo isticmaalo warshad koronto, warshadaha saliidda offshore, warshadaha kiimikada, Bacriminta, petrochemicals, sifaynta iwm.
ASTM A672 B60/B70/C60/C65/C70LSAW(JCOE) Dhuumaha Birta Kaarboonwaa in ay noqdaan laba-alxanka, alxanka galinta buuxa ee loo sameeyay si waafaqsan habraacyada iyo alxanka ama hawl-wadeenada alxanka oo u qalma sida uu qabo kululeeyaha ASME iyo Xeerka markabka cadaadiska, Qaybta IX.
Dhammaan fasallada aan ka ahayn 10, 11, 12 iyo 13 waa in lagu daaweeyaa kulaylka foornada lagu koontaroolo ±15℃ oo lagu qalabeeyaa hydrometer duubista si diiwannada kululaynta loo helo.
Soo-saarka:Welding Arc (LSAW) Muddada Dhex-Qaadsan.
Cabbirka:OD: 406 ~ 1422mm WT: 8 ~ 60mm.
Darajo:B60, C60, C65, iwm.
Dhererka:3-12M ama dherer cayiman sida loo baahdo.
Dhammaad:Dhammaadka Banaan, Dhammaadka Googo'an, Googo'an.
| Shuruudaha Kiimikada ee ASTM A672 B60/B70/C60/C65/C70 LSAW Dhuumaha Birta Kaarboon | ||||||||||||
| Dhuumaha | Darajo | Halabuurka,% | ||||||||||
| C max | Mn | P max | S max | Si | Kuwo kale | |||||||
| <=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 | 0.98max | 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 | 1.30 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 | ... | |
| Guryaha Makaanikada | |||||||
| Darajo | |||||||
|
| B60 | B65 | B70 | C55 | C60 | C65 | C70 |
| Xoog xajin, min: | |||||||
| ksi | 60 | 65 | 70 | 55 | 60 | 65 | 70 |
| Mpa | 415 | 450 | 485 | 380 | 415 | 450 | 485 |
| Xoog soo saar, min: | |||||||
| ksi | 32 | 35 | 38 | 30 | 32 | 35 | 38 |
| MPa | 220 | 240 | 260 | 205 | 220 | 240 | 260 |
| Shuruudaha Kordhinta: Sida caadiga ah | |||||||
1. Dhexroor ka baxsan-Ku salaysan cabbirka wareegga ±0.5% ee dhexroorka dibadda ee la cayimay.
2. Wareega ka baxsan-Farqiga u dhexeeya dhexrooryada waaweyn iyo kuwa yar ee dibadda.
3. Toosinta-Isticmaalka 10 fuudh (3m) toosan oo la dhigay si ay labada daraf ula xiriiraan tuubada, 1/8 in. (3mm).
4. Dhumucda – Dhumucda derbiga ugu yar ee meel kasta oo tuubada ka mid ah waa in aanay ka badnaan 0.01 in. (0.3mm) ee hoos yimaada dhumucda magaca ee la cayimay.
5. Dhererka cidhifyada aan la farsamayn waa inay ku jiraan -0+1/2 in. (-0+13mm) ee la cayimay.Dhererka cidhifyada mishiinada leh waa in ay noqdaan sida ay ku heshiiyaan soo saaraha iyo iibsadaha.
Tijaabada xiisadda-Gelitaanka guryaha xajinta ee isku-xidhka alxanka ah waa inay buuxiyaan shuruudaha ugu yar ee xoogga xajinta ugu dambeeya ee walxaha saxanka la cayimay.
Tijaabooyinka leexsan-hagaaya-alxanka-qaloocinta - Tijaabada qalooca waa in la aqbalo haddii aysan jirin dildilaacyo ama cillado kale oo ka badan 1/8 inch
Imtixaanka-garaaf Raadiyaha- Dhererka buuxa ee alxanka kasta ee fasalka X1 iyo X2 waa in si shucaac ah loo baaro si waafaqsan oo buuxiyo shuruudaha Shuruudaha Kuleyliyaha iyo Qalabka Cadaadiska ee ASME, Qaybta toddobaad, cutubka UW-51.
Tuubada dhammaatay waa in aanay lahayn cillado dhaawac leh waana in ay lahaataa dhammayn shaqo oo kale ah.
A. Magaca ama calaamadda soo saaraha.
B. Lambarka cayiman (taariikhda sanadka ama loo baahan yahay).
C. Cabbirka (OD, WT, dhererka).
D. Darajada (A ama B).
E. Nooca tuubada (F, E, ama S).
F. Cadaadiska tijaabi (tuubo bir ah oo kaliya).
G. Nambarka kulaylka.
H. Wixii macluumaad dheeraad ah oo lagu sheegay amarka iibka.
● tuubo qaawan ama dahaarka madow / Varnish / Epoxy daahan / 3PE (sida waafaqsan shuruudaha macaamiisha);
● 6"iyo wixii ka hooseeya oo xidhmo ah oo leh laba dharbaaxo suuf ah;
● Labaduba waxay ku dhammaadaan ilaaliyeyaasha dhamaadka;
● Dhammaadka cad, dhamaadka godadka (2"iyo wixii ka sareeya oo leh cidhifyada goysyada, darajada: 30 ~ 35°), dunta iyo isku xidhka;
● Calaamadaynta.
