| Material Grade: | S31803， S32750， S32760 ， S31254， S32304， S32900， S31500 ， SAF2205， SAF2507 | Standard: | ASTM A789， ASTM A790， ASTM A928 ， ASME SA789 ， ASME SA790 ， ASME SA928 |
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| Size: | DO:6mm To 2400mm ， WT:0.5mm To 100mm | Inspection: | Eddy Current Test， Hydrostatic Test， Ultrasonic Test， Fe Content Test， Pren Test ， Impact Test ，Intergranular Corrosion Test |
| Packing: | Hex Bundle ， Ply Wooden Case | ||
| High Light: | super duplex， duplex steel pipes | ||
Duplex Steel Pipes ， Super Duplex Pipes， A789， A790 ， A928 S31803(SAF2205) S32750 (SAF2507) S32760
TONG CHUANG Group deal with Austenitic Stainless Steel， Nickel Alloy Steel(Hastelloy ， Monel， Inconel， Incoloy ) seamless and welded pipe and tube already more than 25 years， every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 65 countries， Like Italy， UK， Gernmany， USA， Canada， Chile， Colombia， Saudi Arabia， Korea， Singapore， Austrial， Poland， France ， ….And our group branch company and factory have been already approved by :ABS， DNV， GL， BV， PED 97/23/EC， AD2000-WO， GOST9941-81， CCS， TS， CNNC， ISO9001-2008， ISO 14001-2004.
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Duplex Stainless Steel have a structure that contains both ferrite and austenite. Duplex alloys have higher strength and better stress corrosion cracking resistance than most austenitic alloys and greater toughness than ferritic alloys， especially at low temperatures. The corrosion resistance of duplex alloys depends primarily on their composition， especially the amount of chromium， molybdenum， and nitrogen they contain.
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