LIVE CHAT
GET PRICEThe Present Invention Belongs To The Plate Production Straight Seam Submerged Arc Welded Pipe Production Technology In The Field And, More Particularly, To A Low Wall Thickness X80HD Large Deformation Pipeline And Production Method For Strain-Based Design Of High Strength And Toughness, And Low Yield Ratio, Good Deformation Resistance And Good Weldability Of Pipeline Steel And Longitudinal Production. The X80HD Pipeline steel recrystallization region rolling in austenite, open rolling temperature is 850 ~ 920 ° C, termination rolling temperature is 780 ~ 830 ° C at this stage the billet total pressure ≥65%.
The present invention X80HD large deformation pipeline chemical compositions (weight percent):
| Grade | chemical compositions | |
|
X80HD | C | 0.04 ~ 0.09% |
| S1 | ≤ 0.35% | |
| Mn | 1.5 ~ 1.85% | |
| P | 0.012% | |
| S | 0.004% | |
| Nb | 0.02 ~ 0.05% | |
| Ti | 0.008 ~ 0.025% | |
| N1 | 0.10% ~ 0.50% | |
| Cr | 0.10 ~ 0.45% | |
| Cu | 0.10 ~ 0.30% | |
| Mo | 0.10 ~ 0.35% | |
| Alt | 0.020 ~ 0.070% | |
| B | 0.0005% | |
| Ca | 0.0050% | |
| N | 0.008% | |
| H | 0.0002% | |
X80HD Pipeline Steel Tensile Properties: Yield Strength Rt0.5 transverse to 500MPa ~ 590MPa, a tensile strength of 650MPa ~ 750MPa, yield ratio Rt0.5 / Rm ^ 0.80; Rt0.5 longitudinal yield strength of 460MPa ~ 530MPa tensile strength of 650MPa ~ 750MPa, the yield ratio Rt0.5 / Rm (0.80, uniform elongation ≤ 10%, Rt0.4 / Rt0.8 ^ 0.93; Rt0.8 / Rtl.5 ^ 0.97; Rtl.5 / Rm ^ 0.95.
X80HD Pipeline Steel Water-cooled technology: steel sheet after the relaxation phase change control, enter the cooling system at a rate of 15 ~ 30 ° C / s is rapidly cooled to 300 ~ 450 ° C, and then air cooled to room temperature.
Katalor is the professional Chinese X80HD Pipeline Steel supplier .If you need X80HD Pipeline steel, we can put the X80HD Pipeline steel order to our steel mill directly or collect these goods from our stock directly if we have enough ex-stock .Besides. if you need any offer or if you want to know the price and any other information about X80HD Pipeline steel price, please be free to contact us.
