Tobo Pipeline Equipment (Shanghai) Co., Ltd.
| Packaging Details | WOODCASE or PLATE |
| Delivery Time | 0-30days |
| Payment Terms | TT/LC |
| Supply Ability | 300000T/Year |
| Place of Origin | CHINA |
| Brand Name | TOBO |
| Certification | LR,BV,SGS,BIS,DNV,CRN,ABS,TUV， |
| Model Number | UNS S32750 Super Duplex Stainless Steel Pipe ASTM A789 ASTM A790 ASTM A213 |
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Product Specification
| Packaging Details | WOODCASE or PLATE | Delivery Time | 0-30days |
| Payment Terms | TT/LC | Supply Ability | 300000T/Year |
| Place of Origin | CHINA | Brand Name | TOBO |
| Certification | LR,BV,SGS,BIS,DNV,CRN,ABS,TUV， | Model Number | UNS S32750 Super Duplex Stainless Steel Pipe ASTM A789 ASTM A790 ASTM A213 |
UNS S32750 Super Duplex Stainless Steel Pipe ASTM A789 ASTM A790 ASTM A213
UNS S32750 Super Duplex Stainless Steel Pipe ASTM A789 ASTM A790 ASTM A213
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
UNS32760(1.4501)
ASTM A790 covers seamless and straight-seam welded ferritic/austenitic duplex stainless steel pipe for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic test and nondestructive electric tests shall be made to conform to the specified requirements.
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 |
Duplex Stainless Steel Pipe Application:
Chemical processing, Transport and Storage.
Oil and gas exploration and offshore rigs.
Oil and gas refining.
Marine environments.
Pollution control equipment.
Pulp and paper manufacturing
Chemical process Plant
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:
Radiography Testing |
Macro Testing |
Liquid Penetrate testing |
Company Details
Business Type:
Manufacturer
Year Established:
1998
Total Annual:
$1,000,000-$5,000,000
Employee Number:
50~100
Ecer Certification：
Active Member
Tobo Pipeline Equipments(Shanghai)Co., Ltd., is located in Shanghai, we are one of the biggest manufacturers Pipeline products in China. We are intelligent entity specializing in developing, manufacturing and selling pressure pipe units. The main products contain flanges, elbows, tees, reducers, ben... Tobo Pipeline Equipments(Shanghai)Co., Ltd., is located in Shanghai, we are one of the biggest manufacturers Pipeline products in China. We are intelligent entity specializing in developing, manufacturing and selling pressure pipe units. The main products contain flanges, elbows, tees, reducers, ben...
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