Spezilla Tube Co., Ltd. (Shanghai)
Spezilla Tube Co., Ltd. Excellence in Stainless Steel Tubing
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Duplex S31803 U Tubing,ASME SA789 Duplex Stainless Steel U bend Tubes
ASTM A789 ASME SA 789 S32205 Duplex Stainless Steel is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steel. "Duplex"describes a family of stainless steel that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless steel. The structure of S32205 duplex stainless steel consists of austenitic pools surrounded by a continuous ferritic phase. In the annealing condition, S32205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex stainless steel tube.
Duplex Steel UNS 31803 Heat Exchanger U Tubes .
| Item | Duplex Stainless Steel Tube/Stainless Steel Tubing/Stainless Steel Pipe | |||||
| Standard | ASTM A249/A213/A269/A554/A270/A312/A268/A778/A790/A789/A511 | |||||
| A335/A376/B161/B163/B167/B338/B668/B677/B622 | ||||||
| DIN11850/17456/17458/SMS/ISO2037/ISO1127/EN10217-7 EN 10217-7 | ||||||
| Grade | Austenite:201/202/301/304/304L/304N/304LN/309S/310S/316/316L/316TI | |||||
| Ferritic:409,409L,410,420,430,431,439,440,441,444 | ||||||
| Duplex stainless steel:S31803,S32205,S31500,S32550,S32304,S32750 | ||||||
| Nickel Alloy:Hastelloy,Inconel,Monel Alloy | ||||||
| Special Stainless Steel:904L,347/347H,317/317L,316Ti,254Mo | ||||||
| OD | 3.175mm-1016mm | |||||
| Thickness | 0.5-20mm | |||||
| Length | 1000-12000mm or as required | |||||
| Tolerance | a) Outer Diameter:according to standards or as required. | |||||
| b) Thickness: +/- 10% or as required. | ||||||
| c) Length: -0 +5mm | ||||||
| Finish | Polished,MF,AP, BA(Bright&Annealed) or as required | |||||
| Application | Boiler, Heat Exchanger, Construction, Pharmacy, Power, Petrochemical | |||||
| Machinery, Oil, Gas, and Auto industry... | ||||||
| Test | Flattening test, Bend test, Hydrostatic, Eddy Current, Hardness, | |||||
| Heat Treatment, Flaring test, I.C.test, | ||||||
| Certification | ISO EN 1024 3.1/ 3.1B/ 3.2, PED, DNV, TUV. | |||||
| Package | Plywood Cases or as required. | |||||
| Lead Time | 7-30 days depend on quantity. | |||||
Tube Size
| MINAL DIAMETER NPS | OUTSIDE DIAMETER(MM) | SCH-5S WALL THICKNESS(MM) | SCH-10S WALL THICKNESS(MM) | SSCH-40S WALL THICKNESS(MM) |
|---|---|---|---|---|
| 1/4 | 13.72 | 1.65 | 2.24 | |
| 3/8 | 17.15 | 1.65 | 2.31 | |
| 1/2 | 21.34 | 1.65 | 2.11 | 2.77 |
| 3/4 | 26.67 | 1.65 | 2.11 | 2.87 |
| 1 | 33.40 | 1.65 | 2.77 | 3.38 |
| 1 1/4 | 42.16 | 1.65 | 2.77 | 3.56 |
| 1 1/2 | 48.26 | 1.65 | 2.77 | 3.68 |
| 2 | 60.3 | 1.65 | 2.77 | 3.91 |
| 2 1/2 | 73.03 | 2.11 | 3.05 | 5.16 |
| 3 | 88.90 | 2.11 | 3.05 | 5.49 |
| 3 1/2 | 101.60 | 2.11 | 3.05 | 5.74 |
| 4 | 114.30 | 2.11 | 3.05 | 6.02 |
| 5 | 141.30 | 2.77 | 3.40 | 6.55 |
| 6 | 168.28 | 2.77 | 3.40 | 7.11 |
| 8 | 219.08 | 2.77 | 3.76 | 8.18 |
| 10 | 273.05 | 3.40 | 4.19 | 9.27 |
| 12 | 323.85 | 3.96 | 4.57 | 9.53 |
| 14 | 355.60 | 3.96 | 4.78 | 9.53 |
| 16 | 406.40 | 4.19 | 4.78 | 9.53 |
| 18 | 457.20 | 4.19 | 4.78 | 9.53 |
| 20 | 508.00 | 4.78 | 5.54 | 9.53 |
| 22 | 558.80 | 4.78 | 5.54 | |
| 24 | 609.60 | 5.54 | 6.35 | 9.53 |
| 30 | 762.00 | 6.35 | 7.92 | |
| 32 | 80 | 812.8 | 2032.0 | (Thickness):6.35~30mm Nominal diameter and wall thickness subject to the approval of vendor and purchaser | ||
