API 5LPipeline Hlau Yeeb Nkab
Qib qib hlau: L360 lossis X52 (PSL1)
Tshuaj lom neeg cov tshuaj lom neeg yuav tsum tau ua:
C: ≤0.28 (Seamless) ≤0.26 (Welded)
MN: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 lossis tsawg dua
Ni: ≤0.50
CR: ≤0.50
Mo: ≤0.15
* V + nb + ti: ≤0.15
* Cov ntsiab lus manganese tuaj yeem nce ntxiv los ntawm 0.05% rau txhua 0.01% txo qis hauv cov ntsiab lus carbon, nce txog ntau kawg ntawm 1.65%
Cov Khoom Siv Neeg Kho Tshuab:
Peple Zog: ≥360Mpa
Lub zog tensile: ≥460MPA
Weld tensile lub zog ntawm welded steel yeeb nkab: ≥460MPA
Elongation: ≥1940 * Ax0.2 / 4600.9, qhov twg Axc yog qhov chaw hla ntawm lub tensile
Nrov Inch Dag Kev Zam Txim ntawm cov yeeb nkab Steel:
| Sab Nraud Inch D MM | Qhov Kawg Sab Nraum Inch Dassiation MM | |
| Seamless Steel Yeeb Nkab | Welded Steel Yeeb Nkab | |
| <60.3 | -0.8, +0.4 | |
| 60.3 D lossis tsawg 168.3 lossis tsawg dua | -0.4, +1.6 | |
| 168.3.3 <D≤610 | ± 0.005d, tab sis siab tshaj ± 1.6 | |
| 610 <D≤1422 | + / - 2.0 | + / - 1.6 |
| 1422 | Los ntawm kev pom zoo | |
Phab ntsa qhov tuab kev nyiaj tau of hlau YEEB:
| Phab Ntsa Thickness T MM | Zam Hli |
| Seamless Steel Yeeb Nkab | |
| 4.0 lossis tsawg dua | +0.6, -0.5 |
| 4 <t <25 | + 0.150t, -0.125t |
| 25 lossis siab dua | +3.7 lossis + 0.1t, saib qhov twg yog qhov loj dua -3.0 lossis -0.1t, coj loj dua |
| Welded Tube | |
| 5.0 lossis tsawg dua | + / - 0.5 | |
| 5.0 | <t <15 | Ntxiv los yog rho tawm 0.1 t |
| 15 | lossis ntau dua | + / - 1.5 |
API 5L tus kav dej tus kav dej
Hlau teem nqi: L360N or X52N(PSL2)
Tshuaj muaj pes tsawg Yuav tsum muaj:
C: ≤0.24
Si: ≤0.45
MN: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
NB:I≤0.05
Ti: ≤0.04
CU: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Mo: ≤0.15
V + NB + TI: ≤0.15
* Manganese cov ntsiab lus tuaj yeem nce ntxiv los ntawm 0.05% rau txhua 0.01% txo qis hauv cov ntsiab lus carbon, nce txog qhov siab tshaj plaws ntawm 1.65%.
* Tsis muaj kev txhob txwm sib ntxiv ntawm Boron tau tso cai, seem ntawm B≤0.001%
Pa roj carbon sib xws:
CP CM: ≤0.25
Ceiiw: ≤0.43
* Siv CE thaum cov ntsiab lus carbon yog ntau dua 0.12%, thiab siv CE IIW thaump cm Cov pa roj carbon ntau dua lossis sib npaug rau 0.12%.
CP Cm = C + Si / 20 + MN / 20 + Cu / 20 + NI / 60 + CR / 20 + MO / 15 + V / 10 + 5B
Yog tias qhov tshwm sim ntawm smelting tsom xam ntawm B yog tsawg dua 0.0005%, tom qab ntawd tsis tas yuav tsum tau saib xyuas raws li xoom hauv cov pa roj carbon sib npaug ntawm CM CON.
Ceiiw = C + MN / 6 (C + Mo + V) / 5 + (NI + CU) / 15
Txawj kho ub no Cov Khoom Siv Yuav tsum muaj:
Tos Lub Zog: 360-530MPA
Tensile Lub Zog: 460-760MPA
Yield refio: ≤0.93 (tsuas yog siv rau D> 323.9mm yeeb nkab)
Weld tensile lub zog ntawm welded steel yeeb nkab: ≥460MPA
Qhov tsawg kawg nkaus elongation: = 1940 * * axc0.2 / 4600.9, qhov twg Axc yog qhov qauv hla ntawm lub phaj tensile.
CVN cuam tshuam kev xeem ntawm raj
Sim ntsuas kub 0 .c
| Qhia kom meej rau sab nraud ntawm D MM | Tag Nrho Loj CvnNqus ZogCo kua |
| 508 lossis tsawg dua | 27 |
| > 508 rau 762 | 27 |
| > 762 txog 914 | 40 |
| > 914 txog 1219 | 40 |
| > 1219 txog 1422 | 40 |
| > 1422 txog 2134 | 40 |
Sab nraud qhov dav kev nyiaj tau of hlau YEEB:
| Sab Nraud Inch D MM | XEEM Sab Nraum Txoj Kab Uas Hla | |
| Seamless Steel Yeeb Nkab | Welded Steel Yeeb Nkab | |
| <60.3 | -0.4, +0.8 | |
| 60.3 D lossis tsawg 168.3 lossis tsawg dua | -0.4, +1.6 | |
| 168.3.3 <d = 610 | ± 0.005d, tab sis siab tshaj ± 1.6 | |
| 610 <d = 1422 | + / - 2.0 | + / - 1.6 |
| 1422 | Los ntawm kev pom zoo | |
Phab ntsa qhov tuab kev nyiaj tau of hlau YEEB:
| Phab Ntsa Thickness T MM | Kev thev |
| Seamless Steel Yeeb Nkab | |
| 4.0 lossis tsawg dua | +0.6, -0.5 |
| 4 <t <25 | + 0.150t, -0.125t |
| 25 lossis siab dua | +3.7 lossis + 0.1t, saib qhov twg yog qhov loj dua -3.0 lossis -0.1t, coj loj dua |
| Welded Yeeb Nkab | |
| 5.0 lossis tsawg dua | + / - 0.5 |
| 5.0 <t <15 | Ntxiv los yog rho tawm 0.1 t |
| 15 lossis ntau dua | + / - 1.5 |
Lub Sijhawm Post: Sep-26-2023
