API 5L X70 bututu abu ne mai ƙima mai ƙima a cikin daidaitattun ƙayyadaddun API 5L. Hakanan ana kiransa bututun L485, saboda ƙarfin yawan amfanin ƙasa
mafi ƙarancin 485 Mpa (70,300 psi). API 5L X70 yana rufe nau'ikan masana'anta a cikin nau'ikan marasa ƙarfi da walda (ERW, SAW), duka ana amfani da su.
don watsa mai da iskar gas.
API X70 carbon karfe line bututu za a iya ayyana a matsayin karfe bututu tare da babban carbon abun ciki da alloying fili. API 5L X 70 Carbon karfe bututu maras sumul Baya ga gano adadin wasu abubuwa kamar su sulfur, phosphorus, da dai sauransu, gabobin sa yana da babban abun ciki na manganese da silicon. Bugu da kari na duk wadannan abubuwa taimaka wajen inganta inji Properties na X70 carbon karfe bututu.
Ana iya ganin wannan daga ƙarancin ƙarfin yawan amfanin ƙasa (485 MPa) na API 5L X70 Class B LSAW tube. Hakanan yana da ƙaramin ƙarfi na 635 MPa. Ana kula da saman bututun API 5L X70 SCH 40 DSAW da nau'ikan nau'ikan nau'ikan, kamar baƙar fata, mai mai hana lalacewa, galvanized-tsoma mai zafi ko galvanized mai sanyi. Dangane da takamaiman amfani na X70 PSL2 karkace tube, za mu iya bayar da shawarar mafi kyau surface jiyya ga mu girma abokan ciniki. Misali, da galvanized shafi a kan X70 PSL1 sa bututu yana nuna kyakkyawan juriya na lalata.
|
Nau'in |
API bututun ƙarfe |
|
Girman bututu |
30-426 mm |
|
Kaurin bango |
3-80 mm |
|
Tsawon |
5-12m |
|
Kayan abu |
API 5L X 52 X70 X65 X56, |
|
Daidaitawa |
GB, DIN, ASTM, API (GB/T8162, GB/T8163, GB/T 3087, GB 5130, DIN 1626, DIN 1629/3, DIN 2391, DIN 17175, DIN 2448, |
|
Aikace-aikace |
man fetur, gini, ginin jirgi, narke, jirgin sama, wutar lantarki, kayan abinci, yin takarda, sinadarai, kayan aikin likita, |
|
Kunshin |
Karfe daure, Saƙa jakar cushe, Filastik iyakoki a kan duka biyu, ko kamar yadda abokan ciniki' bukatun. |
Haɗin Sinadari
| Daraja | Haɗin Sinadari | |||||||
| 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 Abubuwan Buƙatun Sinadarai | ||||||||
| Daraja | Abun ciki, % | |||||||
| C max | Mn max | P | S max | V max | Nb max | Da 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 Abubuwan Buƙatun Sinadarai | |||||||||
| Daraja | Abun ciki, % | ||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Sauran | |
| X70Q | 0.18 | 0.45 | 1.8 | 0.025 | 0.015 | g | g | g | h,l |
API 5L GrB X70 PSL 1/2 Kayayyakin Injini
| Daraja | Ƙarfin Haɓaka Mpa | Ƙarfin Tensile Mpa | Raito | Tsawaitawa | ||
| min | max | min | max | max | min | |
| BN | 245 | 450 | 415 | 655 | 0.93 | f |
| BQ | ||||||
| X70Q | 485 | 635 | 570 | 760 | 0.93 | f |
