| Standard: | ASTM/ASME A789/SA789， A790/SA790，A450，A530 | Materia: | UNS S31803(Cr22Ni5Mo3/1.4462)/2205，UNS S32750(1.4410)，UNS S31500(Cr18NiMo3Si2)， UNS32760(1.4501) |
|---|---|---|---|
| Type: | SEAMLESS / ERW / WELDED/ FABRICATED | Inspection: | ET， HT， UT ， PMI |
| Length: | SRL ， DRL， Cut Length | End: | Plain End， Bevelled End |
| High Light: | astm a790 uns s32750 seamless steel tube， astm a790 duplex stainless steel pipes， uns s32750 duplex stainless steel pipes | ||
ASTM A790 / ASME SA790 UNS S32750 Super Duplex Stainless Steel Pipe
ASTM A790 / ASME SA790 S32750 Standard Specification
| Standard | ASTM A790， ASME SA790 |
| Equivalent Standards | DIN 17458， GOST 9941-81， GOST 9940-81， EN 10216-5， ASTM A790， ASME SA790， DIN 17456 |
| Material | S32750 |
| Equivalent Materials | X2CrNiMoN25-7-4， 1.4410， SAF2507， F53 |
| Related Products | stainless steel tube， stainless steel pipe， heat exchanger steel tube， ASTM A890 |
ASTM A790 UNS S32750
Sizes : 1/8 to 24 Inch
Thickness : Sch 5 to Sch 160
Length : SRL and DRL
Ends : Plain and Bevelled
ASTM A790 UNS S32750 Welded Pipes
Sizes : 1/8 to 100 Inch.
Thickness : Up to 25mm
Length : Up to 12 Meters
Ends : Plain and Bevelled
Chemical Composition
| Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Types of S32750 Seamless & Welded Pipe:
S32760 | Duplex S32750 Thin Wall Pipe |
Some of the quality tests carried out by us includes
| Corrosion Test | Conducted only when specially requested by the client |
| Chemical Analysis | Test done as per required quality standards |
| Destructive / Mechanical Testing | Tensile | Hardness | Flattening | Flare | Flange |
| Reverse-bend and Re. flat tests | Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms， which ensures trouble-free expansion， welding & use at customers end |
| Eddy Current Testing | Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage， and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation， every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
Supplementary Testing : Apart from the above mentioned tests， we also carry out on the manufactured products supplementary testing. The tests conducted under this include
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