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[China]
Trade Verify
Address: 20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact name:Jikin Cai
Yuhong Group Co.,Ltd |
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Verified Suppliers
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ASME SA789 Grade 2205 / UNS S32205 Duplex Stainless Steel Seamless U Bend Tube
YUHONG deasl 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 45 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.
According to ASTM A789/ASME AS789 Specification Standard--Chemical Requirements
| UNS | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu | Other |
| S31803 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21-23 | 2.5-3.5 | 0.08-0.2 | ... | ... |
| S32205 | 0.3 | 2 | 0.3 | 0.2 | 1 | 4.5-6.5 | 22-23 | 3-3.5 | 0.14-0.2 | ... | ... |
| S32750 | 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 6-8 | 24-26 | 3-5 | 0.24-0.32 | 0.5 | ... |
| S32760 | 0.3 | 1 | 0.03 | 0.01 | 1 | 6-8 | 24-26 | 3-4 | 0.2-0.3 | 0.15-1 | W 0.5-1 |
Customer Specifications
Technical Specifications
U-bent tubes are manufactured according to the technical specifications requested by customers:
Outside diameter of the tube: 6 ÷ 90 mm.
Maximum overall length: > 26 m.
Bending radius (min.): 1,5 × tube diameter.
Bending radius (max.): 1200 mm.
Heat treatment (by Joule effect on bent area) in inner and outer
inert atmosphere.
Anti oxidation surface treatment (with protective oils).
Trimming and deburring of the ends.
Internal cleaning and caps insertion.
Packing in custom racks.
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:
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Applications
U-Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipment on the basis of
Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important and
critical felds---Nuclear And Petrochemical Machine Building.
