Super duplex Stainless Steel kav uas tsim nyob rau hauv specification ASTM A790, yog muab nyob rau hauv ib tug seamless los yog ib tug welded tsim. Cov txheej txheem tsis siv neeg siv los tsim Super Duplex Welded Yeeb Nkab yog tsis siv cov hlau muab tub lim. Super Duplex Pipe cov neeg muag khoom pom zoo siv cov kav dej no rau cov ntawv thov uas ua rau muaj kev tiv thaiv corrosion. Muaj ntau qhov laj thawj uas suav nrog cov khoom tiv thaiv corrosion ntawm ASTM A790 UNS S32760 Stainless yeeb nkab. Ntxiv nrog rau muaj cov ntsiab lus siab ntawm molybdenum, npib tsib xee thiab chromium, muaj qhov tseem ceeb suav nrog austenite stabilizing lub caij, nitrogen. Kev ntsuas cua sov yog ua tiav ntawm ASTM A790 UNS S32750 txhawm rau txiav txim siab qhov feem pua ntawm cov ntsiab lus tau teev tseg ntawm no.
Tom ntej no, qhov sib xyaw microstructure ntawm Super Duplex 2507 SS Pipe txhim kho nws cov khoom. Piv txwv li, ferritic ib feem ntawm duplex microstructure nyob rau hauv lub alloy ntawm cov yeeb nkab yog lub luag hauj lwm rau lub Super Duplex 2507 Seamless yeeb nkab exhibiting superior tsis kam rau kev ntxhov siab vim corrosion cracking, tshwj xeeb tshaj yog thaum raug rau sov chloride ion bearing xwm txheej. Feem ntau, cov kev ntsuam xyuas xws li kev ntsuam xyuas flattening, hardening tests, hydrostatic tests, Tension tests thiab nondestructive electric tests yog ua nyob rau hauv Super Duplex Seamless Pipe kom paub tseeb tias lawv ua raws li ASTM A790.
Super Duplex Steel Seamless S32750 Tubes Specification:
| Specifications | : | ASTM A789 / SA 789 Txheem: |
| Loj | : | 1/2 "NB TO 12" NB IN |
| Thickness | : | 0 5-45mm |
| Sab nraud | : | 6. 0-630 hli |
| Qhov ntev | : | OD(6.0-630)*WT(05-45)mm |
| Ntev | : | Ib qho Random, Ob Chav Random & Txiav Ntev |
| Teem caij | : | SCH20, SCH30, SCH40, TSI, SCH80 |
ASTM A789 S32750 Super Duplex Hlau Stainless Seamless Tubes sib npaug qib
| STANDARD | UNS | WERKSTOFF NR. |
| Super Duplex 2507 | S32750 | 1.4410 |
UNS S32750 Super Duplex Steel Seamless Tube Tshuaj Muaj pes tsawg leeg
| C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58, 095m |
Seamless Ferritic / Austenitic Super Duplex Super Duplex Hlau 1.4410 Tubes Cov Khoom Siv Hluav Taws Xob
| Qhov ntom | Melting Point | Tensile zog | Yield zog (0.2% Offset) | Elongation |
| 7,8g 3 | 1350 degree (2460 degree F) | Psi - 116000, MPa - 800 | Psi - 80000, MPa - 550 | 15 % |
