 |
| उत्पत्ति के प्लेस: | चीन |
| ब्रांड नाम: | YUHONG |
| प्रमाणन: | ISO, TUV, PED etc. |
| मॉडल संख्या: | ए789 एस32750 (एन 1.4410, एसएएफ 2507) |
| न्यूनतम आदेश मात्रा: | 1पीसी |
|---|---|
| मूल्य: | बातचीत योग्य |
| पैकेजिंग विवरण: | प्लाई-लकड़ी का केस/आयरन केस/प्लास्टिक कैप के साथ बंडल |
| प्रसव के समय: | स्वनिर्धारित |
| भुगतान शर्तें: | टी/टी, एल/सी नजर में |
| आपूर्ति की क्षमता: | हाइड्रोलिक पंप |
| मानक: | ASTM A789 / ASME SA789 | श्रेणी: | UNS S32750 |
|---|---|---|---|
| साधारण नाम: | A789 S32750 सुपर डुप्लेक्स ट्यूब | उत्पाद का प्रकार: | निर्बाध ठंड से तैयार स्टेनलेस स्टील हीट एक्सचेंजर और कंडेनसर ट्यूब |
| उष्मा उपचार: | समाधान एनीलिंग | आवृति सीमा: | एनील्ड, अचारयुक्त और निष्क्रिय, उज्ज्वल एनील्ड वैकल्पिक |
| आवेदन: | हीट एक्सचेंजर्स, कंडेनसर, बाष्पीकरणकर्ता, समुद्री जल शीतलन और अलवणीकरण संयंत्र | एनडीटी: | एडी करंट टेस्ट, हाइड्रोस्टैटिक टेस्ट |
A789 S32750 Super Duplex Heat Exchanger Tube, Seamless And Solution Annealed, Eddy Current Test / Hydrostatic Tested
Overview
ASTM A789 S32750 (2507/1.4410) is a premium super duplex stainless steel seamless tube engineered specifically for heat exchangers, condensers and evaporators.
With a balanced 50% austenite and 50% ferrite microstructure, it features high mechanical strength, excellent chloride pitting, crevice and stress corrosion resistance, and superior thermal conductivity.
It is widely used in seawater desalination, offshore oil & gas, petrochemical, power plant and FGD systems for high-pressure, high-temperature and harsh corrosive working conditions.
Key Performance Features
Double yield strength compared to 304/316L
Outstanding resistance to chloride pitting, crevice corrosion & stress corrosion cracking
Good thermal conductivity, higher than austenitic stainless steel
Excellent erosion corrosion & fatigue resistance
Suitable for high pressure & high temperature severe service
Mechanical Properties (Solution Annealed Condition)
Tensile Strength: ≥790 MPa
Yield Strength (0.2% Proof): ≥550 MPa
Elongation: ≥15%
Hardness: ≤310 HB / ≤32 HRC
Microstructure: Balanced 50% Ferrite + 50% Austenite
Manufacturing & Heat Treatment
Process: Seamless → Hot piercing → Cold drawn / Cold rolled
Heat Treatment: Solution annealing at 1020–1100°C, water quenched
Delivery Condition: Annealed, pickled & passivated, bright annealed optional
Available Size Range
Outer Diameter: 6.0mm – 114.3mm
Wall Thickness: 1.0mm – 8.0mm
Standard Length: 6000mm / 12000mm
Custom: U-bend heat exchanger tubes available
Tolerance: Strict OD & WT tolerance per ASTM A789
Chemical Composition for A789 S32750 Super Duplex Heat Exchanger Tube
| Element | Content Limit |
|---|---|
| C | ≤0.03 |
| Mn | ≤1.20 |
| P | ≤0.035 |
| S | ≤0.020 |
| Si | ≤0.80 |
| Cr | 24.00–26.00 |
| Ni | 6.00–8.00 |
| Mo | 3.00–5.00 |
| N | 0.24–0.32 |
Key Performance Features
Application
Heat exchangers, condensers, evaporators
Seawater cooling & desalination plants
Offshore oil & gas platforms
Petrochemical, chemical processing industry
Power plant coastal cooling systems
Flue gas desulfurization (FGD) systems
व्यक्ति से संपर्क करें: Kelly Huang
दूरभाष: 0086-18258796396
फैक्स: 0086-574-88017980
