Dhuumaha API 5L X70 waa agab tuubooyin heersare ah oo ku jira tilmaamaha caadiga ah ee API 5L. Waxa kale oo loo yaqaan tubbada L485, maadaama ay tahay wax soo saar
ugu yaraan 485 Mpa (70,300 psi). API 5L X70 waxay dabooshaa noocyada wax-soo-saarka ee kuwa aan toobi karin iyo kuwa alxanka leh (ERW, SAW), labadaba la dabaqay.
shidaalka iyo gaaska la isugu gudbiyo.
API X70 kaarboon line line bir ah waxaa lagu qeexi karaa sida dhuumaha birta leh ka kooban kaarboon sare iyo dhismaha alloying. API 5L X 70 kaarboon bir ah oo aan lahayn tuubo Marka lagu daro raadadka cadadka walxaha kale sida baaruudka, fosfooraska, iwm., daawaynta waxay leedahay maaddo sare oo manganese iyo silikoon ah. Ku darida dhammaan walxahan waxay gacan ka geystaan hagaajinta sifooyinka farsamada ee tuubada birta kaarboon ee X70.
Tan waxaa laga arki karaa awoodda wax-soo-saarka hooseeya (485 MPa) ee tuubada API 5L X70 Class B LSAW. Waxa kale oo ay leedahay ugu yaraan awoodda xajinta ee 635 MPa. Dusha sare ee tuubooyinka API 5L X70 SCH 40 DSAW waxaa lagu daaweeyaa noocyo kala duwan, sida madow, saliid ka hortagta, galvanized-kulul ama qabow galvanized. Iyadoo ku xiran isticmaalka gaarka ah ee X70 PSL2 tube spiral, waxaan kugula talin karnaa daaweynta dusha ugu fiican ee macaamiishayada sharafta leh. Tusaale ahaan, dahaarka galvanized ee tuubooyinka darajada X70 PSL1 ayaa muujinaya iska caabin aad u wanaagsan oo daxalka ah.
Nooca |
Dhuumaha birta API |
Cabbirka tuubada |
30 - 426mm |
Dhumucda gidaarka |
3-80mm |
Dhererka |
5-12m |
Qalab |
API 5L X 52 X70 X65 X56, |
Heerka |
GB, DIN, ASTM, API (GB/T8162, GB/T8163, GB/T 3087, GB 5130, DIN 1626, DIN 1629/3, DIN 2391, DIN 17175, DIN 2448, |
Codsiga |
shidaalka, dhismaha, maraakiibta, dhalaalka, duulista, korontada, cuntada, waraaqaha, kiimikada, qalabka caafimaadka, |
Xidhmada |
Xariijimaha birta ah ee la xidhxidhay, Bac tolan oo la soo buuxiyay, Koofiyadaha caaga ah ee labada daraf, ama sida waafaqsan shuruudaha macaamiisha. |
Halabuurka Kiimikada
Darajo | Halabuurka Kiimikada | |||||||
C | Si | Mn | P | S | V | Nb | Ti | |
API 5L X70 | 0.17 | 0.45 | 1.75 | 0.020 | 0.010 | 0.10 | 0.05 | 0.06 |
API 5L X70 PSL 1 Shuruudaha Kiimikada | ||||||||
Darajo | Halabuurka,% | |||||||
C max | Mn max | P | S max | V max | Nb max | Ti max | ||
min | max | |||||||
B | 0.28 | 1.2 | - | 0.03 | 0.03 | c.d | c,d | d |
X70 | 0.28 | 1.4 | - | 0.03 | 0.03 | f | f | f |
API 5L X70Q PSL 2 Shuruudaha Kiimikada | |||||||||
Darajo | Halabuurka,% | ||||||||
C | Si | Mn | P | S | V | Nb | Ti | Mid kale | |
X70Q | 0.18 | 0.45 | 1.8 | 0.025 | 0.015 | g | g | g | h,l |
API 5L GrB X70 PSL 1/2 Qalabka Makaanikada
Darajo | Awood-soo-saarka Mpa | Xoojinta Xoojinta Mpa | Raito | Dheeraynta | ||
min | max | min | max | max | min | |
BN | 245 | 450 | 415 | 655 | 0.93 | f |
BQ | ||||||
X70Q | 485 | 635 | 570 | 760 | 0.93 | f |