TOBO GROUP
TOBO International Trading(Shanghia)Co.,Ltd Tianda Oil Pipe Co., Ltd
TOBO Pipeline Equipment Co.,Ltd TPCO & TISCO Pipe(Tianjin)Co.,Ltd.
| Place of Origin: | China/Japan/Germany |
|---|---|
| Brand Name: | TOBO/TPCO/TISCO/VALIN/METAL |
| Certification: | ISO/PED/TUV/SGS/LR/BV |
| Model Number: | S31803/S31500/S32750 |
| Minimum Order Quantity: | 0.5-1 tons |
| Price: | negotiable |
| Packaging Details: | in plastic bags then in bundles |
| Delivery Time: | According to the qty |
| Payment Terms: | T/T, L/C, Western Union, MoneyGram |
| Supply Ability: | 6000TONS/MONTH |
| Standard:: | ASTM A778,ASTM A790, A790, A789 | Color: | White Silver Gold |
|---|---|---|---|
| Types:: | Duplex Stainless Steel Pipe / Tube | Material Grade: | S31803 / S32750 / S32205 / S32760 |
| Outer Diameter: | 6mm-21.3mm / 0.8mm-4mm | ||
| Highlight: | super duplex stainless steel pipe,duplex ss pipe |
||
ASTM Duplex Stainless Steel Pipe Tube , super duplex stainless steel pipe
| Size Range | O.D.: Φ6--Φ530mm, W.T: 0.8mm--30mm |
| SCH 5,SCH 10,SCH 20,SCH 40,SCH 80,SCH 120,SCH 160,SCH XXS | |
| Specification | ASTM A778,ASTM A790, A790, A789 |
| Grade | S31803,S32205(Duplex),S32760, S32750 |
Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel.
Strength: Duplex stainless steels are about twice as strong as regular austenitic or ferritic stainless steels.
Toughness and ductility: Duplex stainless steels have significantly better toughness and ductility than ferritic grades; however, they do not reach the excellent values of austenitic grades.
Corrosion resistance: As with all stainless steels, corrosion resistance depends mostly on the composition of the stainless steel. For chloride pitting and crevice corrosion resistance, their chromium, molybdenum and nitrogen content are most important. Duplex stainless steel grades have a range of corrosion resistance, similar to the range for austenitic stainless steels
Stress corrosion cracking resistance: Duplex stainless steels show very good stress corrosion cracking (SCC) resistance, a property they have “inherited” from the ferritic side. SCC can be a problem under certain circumstances (chlorides, humidity, elevated temperature) for standard austenitics such as Types 304 and 316.
Cost: Duplex stainless steels have lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance. Due to the lower alloying content, duplex stainless steels can be lower in cost, especially in times of high alloy surcharges. Additionally, it may often be possible to reduce the section thickness of duplex stainless steel, due to its increased yield strength compared to austenitic stainless steel. The combination can lead to significant cost and weight savings compared to a solution in austenitic stainless steels.
Material Grade:
|
American Standard |
Austenitic Steel: TP304,TP304L,TP304H, TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, TP317,TP317L, TP321, TP321H,TP347, TP347H,904L… Duplex Steel : S32101,S32205,S31803,S32304,S32750, S32760 Others:TP405,TP409, TP410, TP430, TP439,... |
|
Europen Standard |
1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438, 1.4841,1.4845,1.4539,1.4162, 1.4462, 1.4362, 1.4410, 1.4501 |
|
Russia Standard |
08Х17Т,08Х13,12Х13,12Х17,15Х25Т,04Х18Н10,08Х20Н14С2, 08Х18Н12Б,10Х17Н13М2Т,10Х23Н18,08Х18Н10,08Х18Н10Т, 08Х18Н12Т,08Х17Н15М3Т,12Х18Н10Т,12Х18Н12Т,12Х18Н9, 17Х18Н9, 08Х22Н6Т, 06ХН28МДТ |
TOBO GROUP:
Make development by enlarging scale brand building and internationalization.
Keep Challenging and Innovation.
Advance manufacturing instruments.
Create perfect quality.
Take strict testing as guarantee, upgrade grade as object.
EXHIBITION AND CUSTORMER SATISFACTORY
Chemical Composition(%)
|
Alloy |
2304 |
|
UNS Designation |
S32304 |
|
Carbon (C) max. |
0.030 |
|
Manganese (Mn) max. |
2.50 |
|
Phosphorus (P) max. |
0.040 |
|
Sulfur (S) max. |
0.030 |
|
Silicon (Si) max. |
1.00 |
|
Chromium (Cr) |
21.5 - 24.5 |
|
Nickel (Ni) |
3.0 - 5.5 |
|
Molybdenum (Mo) |
0.05 - 0.60 |
|
Nitrogen (N) |
0.05 - 0.20 |
|
Copper (Cu) |
0.05 - 0.60 |
|
Iron (Fe) |
Balance |
| Inspection & Test |
| 1.100% PMI, Spectro Chemical Analysis Test for Raw Material |
| 2.100% Dimension & Visual Examination |
| 3. Mechanical Properties Test Include Tension Test Flattening Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test |
| 4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT) |
| 5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor) |
| 6.Straightness Test (optional) |
| 7.Roughness Test (optional) |
| 8.Intergranular Corrosion Test(optional) |
| 9.Impact Test (optional) |
| 10.Grain Size Determinations (optional) |
| NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION. |