I-ASTM A672 B60/B70/C60/C65/C70 LSAW(JCOE) iCarbon Steel Pipe isisetyenziswa kwimeko yoxinzelelo oluphezulu kwaye isetyenziswa ikakhulu kwiplanti yamandla, kwishishini leoli elingaphesheya, ishishini lemichiza, Isichumisi, iikhemikhali zepetroli, iindawo zokucokisa njl.njl.
I-ASTM A672 B60/B70/C60/C65/C70LSAW(JCOE) iCarbon Steel Pipeiya kuba i-welded kabini, i-welds yokungena ngokupheleleyo eyenziwe ngokuhambelana neenkqubo kunye nabasebenzi be-welders okanye abaqhubi abafanelekileyo ngokuhambelana ne-ASME Boiler kunye noxinzelelo lweKhowudi yeVessel, iCandelo IX.
Zonke iiklasi ngaphandle kwe-10, i-11, i-12 kunye ne-13 iya kuphathwa ukushisa kwisithando somlilo esilawulwa kwi-±15℃ kwaye ixhotyiswe nge-hydrometer yokurekhoda ukwenzela ukuba iirekhodi zokufudumeza zifumaneke.
Ukwenziwa:I-Longitudinally Submerged Arc Welding (LSAW).
Ubungakanani:I-OD: 406～1422mm WT: 8～60mm.
Ibakala:B60, C60, C65, njl.
Ubude:3-12M okanye ubude obuchaziweyo njengoko kufuneka.
Iphela:Isiphelo esicacileyo, iBeveled End, iGrooved.
| Iimfuno zeMichiza ye-ASTM A672 B60/B70/C60/C65/C70 LSAW Umbhobho weNtsimbi yeCarbon | ||||||||||||
| Umbhobho | IBanga | Ukuqamba, % | ||||||||||
| C max | Mn | P max | S max | Si | Abanye | |||||||
| <=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 | 0.98ubuninzi | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 65 | 0.28 | 0.31 | 0.33 | 0.33 | 0.33 | 0.98ubuninzi | 0.035 | 0.035 | 0.13–0.45 | ... | ||
| 70 | 0.31 | 0.33 | 0.35 | 0.35 | 0.35 | 1.30 ubuninzi | 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 | ... | |
| Iipropati zoomatshini | |||||||
| IBanga | |||||||
|
| B60 | B65 | B70 | C55 | C60 | C65 | C70 |
| Amandla okuqina, min: | |||||||
| ksi | 60 | 65 | 70 | 55 | 60 | 65 | 70 |
| Mpa | 415 | 450 | 485 | 380 | 415 | 450 | 485 |
| Amandla emveliso, min: | |||||||
| ksi | 32 | 35 | 38 | 30 | 32 | 35 | 38 |
| MPa | 220 | 240 | 260 | 205 | 220 | 240 | 260 |
| IiMfuno zokwandiswa: Ngokomgangatho | |||||||
1. Idayamitha yangaphandle-Ngokusekwe kumlinganiselo wesangqa ±0.5% wedayamitha yangaphandle echaziweyo.
2. Ngaphandle kwe-Roundness-Umahluko phakathi kweedayamitha ezinkulu nezincinci zangaphandle.
3. Ulungelelwaniso-Ukusebenzisa i-10 ft (3m) i-straightedge ebekwe ukwenzela ukuba iziphelo zombini zidibene nombhobho, 1/8 ngaphakathi. (3mm).
4. Ukutyeba-Ubuncinane bodonga lobukhulu nakweyiphi na indawo kumbhobho abuyi kuba ngaphezu kwe-0.01 ngaphakathi (0.3mm) phantsi kobukhulu obuxeliweyo obuchaziweyo.
5. Ubude obuneziphelo ezingasetyenziswanga buya kuba ngaphakathi -0+1/2 phakathi. (-0+13mm) koko kuchaziweyo.Ubude obuneziphelo zoomatshini buya kuba njengoko kuvunyelwene ngazo phakathi komvelisi kunye nomthengi.
Uvavanyo lweTension-Iipropati ezinqamlezileyo zokuqina kwekhonkco elidityanisiweyo ziya kuhlangabezana nezona mfuno zisezantsi zokuqina kokuqina kwemathiriyeli yepleyiti echaziweyo.
Iimvavanyo eziguquguqukayo-ezikhokelwayo-Uvavanyo lwe-bend luya kwamkeleka ukuba akukho zintanda okanye ezinye iziphene ezidlula i-1/8 in.
Uvavanyo lweRadio-graphic-Ubude obupheleleyo beweld nganye yodidi lwe-X1 kunye ne-X2 buya kujongwa ngokwerediyo ngokuhambelana kwaye kuhlangabezene neemfuno zeKhowudi ye-ASME yeBhola kunye noxinzelelo lweVessel, iCandelo lesixhenxe, umhlathi UW-51.
Umbhobho ogqityiweyo awuyi kuba neziphene ezonzakalisayo kwaye uya kuba nesiphelo esifana nomsebenzi.
A. Igama lomenzi okanye uphawu.
B. Inombolo yenkcazo(unyaka-umhla okanye efunekayo).
C. Ubungakanani ( OD, WT, ubude).
D. IBanga ( A okanye B).
E. Uhlobo lombhobho ( F, E, okanye S).
F. Uxinzelelo lovavanyo (umbhobho wentsimbi ongenamthungo kuphela).
G. Inani lobushushu.
H. Naluphi na ulwazi olongezelelweyo oluchazwe kumyalelo wokuthenga.
● Umbhobho ongenanto okanye uMnyama / iVarnish yokugqoka / i-Epoxy coating / i-3PE yokugqoka (ngokweemfuno zomthengi);
● 6"nangaphantsi ube zizithungu ezinezilingi zomqhaphu ezibini;
● Zombini ziphela kunye nabakhuseli bokugqibela;
● Isiphelo esicacileyo, isiphelo se-bevel (2"nangaphezulu sineziphelo ze-bevel, idigri: 30 ~ 35 °), intambo kunye nokudibanisa;
● Ukumakisha.
