TOBO STEEL GROUP CHINA
TOBO GROUP TOBO International Trading(Shanghia)Co.,Ltd Tianda Oil Pipe Co., Ltd TOBO Pipeline Equipment Co.,Ltd TPCO & TISCO Pipe(Tianjin)Co.,Ltd.
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| Place of Origin | CHINA | Certificate | BV/ABS/LR/TUV/DNV/BIS/API/PED |
| Application | Steam air gas oil pipes or oth | Payment Term | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Material:Stainless steel | Colour | White,Black,Yellow,Galvanized |
ASTM B564 UNS N08031 flange
Alloy 31 Flange
Alloy 31 – UNS N08031 – X1NiCrMoCu 32 28 7 – 1.4562
Alloy 31 is characterized by outstanding resistance to corrosion in halide media, both acidic and basic; outstanding resistance to sulfuric acid, even highly concentrated; outstanding resistance to corrosion and erosion-corrosion in phosphoric acid media; excellent resistance to both localized corrosion and general corrosion in chlorine dioxide bleach media; excellent resistance to both reducing and oxidizing media, and ease of fabrication and welding. Approval for pressure-vessel use involving wall temperatures from -196 to 550ºC (-320 to 1020ºF).
| WEIGHT% | C | SI | MN | S | P | CR | NI | MO | N | CU |
| MIN. | 26,0 | 30,0 | 6,0 | 0,15 | 1,0 | |||||
| MAX. | 0,015 | 0,3 | 2,00 | 0,010 | 0,020 | 28,0 | 32,0 | 7,0 | 0,25 | 1,4 |
PREN = (CR% + 3.3MO% + 16N%) ≥ 48
PRODUCT STANDARDS: ASTM B625 – 14
APPROVALS: FOR USAGE IN PRESSURE VESSELS WITH WALL TEMPERATURES BETWEEN -196°C TO 550°C
| Product Form | |||||
| ASME B16.5 N08031 flange | Size:1/2″-24″ Wall thickness:SCH5S-SCHXXS Class:150-1500# | ||||
| ASME B16.47 N08031 flange | Size:26″-48″ Wall thickness:SCH5S-SCHXXS Class:150-1500# | ||||
| ASME B16.48 N08031 flange | Size:1/2″-24″ Wall thickness:SCH5S-SCHXXS Class:150-1500# | ||||
| MSS SP-44 N08031 flange | Size:12″-60″ Wall thickness:SCH5S-SCHXXS Class:150-1500# | ||||
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