عند التعامل مع مياه البحر, brackish water, or high-chloride brines, standard materials like cast iron or even 304 stainless steel fail rapidly due to pitting, crevice corrosion, and stress corrosion cracking (SCC). That’s why Super Duplex SS 2507 vertical turbine pumps for seawater treatment have become the gold standard for demanding environments.
مضخة هونان شيانغمي – a professional pump manufacturer in China – offers a complete range of مضخات التوربينات العمودية من طراز LC manufactured in الفولاذ المقاوم للصدأ سوبر دوبلكس SS2507, along with other premium alloys (دوبلكس 2205, 904L, Titanium, CD4MCu, etc.). Our pumps are designed for long, trouble-free operation in seawater intake, desalination plants, offshore platforms, and power generation.
Why Super Duplex SS 2507 for Seawater Treatment?
Super Duplex SS 2507 (UNS S32750) offers superior performance over standard duplex grades. Its high chromium (25%), molybdenum (4%), and nitrogen content deliver:
| العقارات | Superior Duplex 2507 | Duplex 2205 (for comparison) |
|---|---|---|
| PRE (Pitting Resistance Equivalent) | > 40 | > 35 |
| حد الانزلاق | ~550 MPa | ~450 MPa |
| مقاومة الخرسانة المخلوطة بالكلوريد للتشقق التموجي (SCC) | ممتاز | جيد |
| Critical Crevice Temp (CCT) | ~50°C in seawater | ~35°C in seawater |
بالنسبة لـ seawater treatment applications – where temperatures can reach 150°C, and chloride levels exceed 60,000 mg/L – Super Duplex SS 2507 vertical turbine pumps ensure minimal corrosion allowance, reduced maintenance, and a service life of 20+ years.
Technical Data – LC Vertical Turbine Pump (Super Duplex SS2507)
Hunan Durafort’s LC series is specifically engineered to handle corrosive and abrasive fluids. Below are the key technical parameters when manufactured in Super Duplex SS 2507:
| المعلمة | القيمة |
|---|---|
| Flow Range | 50 - 8,400 متر مكعب/ساعة |
| نطاق الرأس | 15 - 150 m |
| Speed Options | 980 / 1480 / 2970 r/min |
| أقصى درجة حرارة | ~150°C |
| Materials (Wetted parts) | Super Duplex SS2507, Duplex 2205, 904L, CD4MCu, Titanium, SS316L, etc. |
| التطبيقات | Seawater intake, desalination feed/brine, offshore cooling, firewater, mining dewatering |
Other materials available upon request – including carbon steel, ductile iron, SS304, and Hastelloy.
Key Applications – Where Our Super Duplex 2507 Vertical Turbine Pumps Excel
1. Seawater Intake & Circulation (Desalination Plants)
Seawater Reverse Osmosis (SWRO) and Multi-Stage Flash (MSF) plants require continuous, high-volume pumping of raw seawater and concentrated brine. Super Duplex SS 2507 vertical turbine pumps for seawater treatment provide:
- Excellent resistance to chloride-induced SCC
- High erosion resistance against sand/silt in seawater
- Long intervals between overhauls
2. Offshore Platforms & FPSOs
The North Sea, Gulf of Mexico, and Caspian Sea demand extreme corrosion protection. Our pumps are used for:
- Cooling water service
- Fire fighting systems (seawater)
- Oil-in-water treatment feed
3. Power Generation (Coastal & Floating Power Plants)
Condenser cooling and auxiliary cooling water circuits rely on reliable vertical turbine pumps. Super Duplex 2507 eliminates copper alloy corrosion and reduces biofouling risks.
4. Mining & High-Chloride Dewatering
When pumping mine water with chlorides + abrasive solids (e.g., 20% solids, 60,000 ppm Cl⁻), SS2507 outperforms 316L and even 2205 in both corrosion and wear resistance.
5. Fire Protection Systems (Seawater)
For large ports, LNG terminals, and coastal industrial facilities, fire pumps must work on demand – sometimes after years of standby. Super Duplex 2507 ensures no pitting or seizure.
مزايا اختيار مضخات هونان دورافورت
As a شركة متخصصة في تصنيع المضخات في الصين, Hunan Durafort Pumps combines engineering excellence with cost-effective production. Our Super Duplex SS 2507 vertical turbine pumps for seawater treatment are backed by:
Full traceability – Material certificates (EN 10204 3.1) available
Precision casting – Investment cast SS2507 impellers & bowls
Customization – Any length, flange drilling, or shaft material
مهل تسليم قصيرة – Faster than European or US competitors
Global support – Spare parts stocked for all models (XSP split case, LC turbine, HD mixed flow, ZLB axial flow)
We also manufacture pumps in دوبلكس 2205, 904L, CD4MCu, ، و التيتانيوم – ask our engineers for the most economical alloy for your exact seawater chemistry.
Performance Comparison – SS2507 vs. Other Alloys in Seawater
| Alloy | PREN | Typical Life in Raw Seawater (years) | Suitability for Brine |
|---|---|---|---|
| الحديد الزهر | <25 | <1 (rapid corrosion) | Not recommended |
| SS316L | ~25 | 2–5 (pitting after 1-2 yrs) | لا |
| دوبلكس 2205 | ~35 | 8–12 | Limited at high temp |
| سوبر دوبلكس 2507 | >40 | 15–25+ | ممتاز |
| Titanium Grade 2 | ~N/A | 30+ (very expensive) | Excellent but costly |
بالنسبة لـ معالجة مياه البحر where both CAPEX and OPEX matter, Super Duplex SS 2507 offers the best balance of performance and price.
Frequently Asked Questions (FAQ)
Q1: Can your LC vertical turbine pump handle abrasive particles (sand) in seawater?
ج: Yes. The Super Duplex SS2507 grade has high hardness (～280 HB) and can tolerate moderate sand content. For heavy abrasion, we recommend hard chrome plating or rubber-lined options.
Q2: What is the maximum submersion depth for your SS2507 vertical turbine pump?
ج: Standard design up to 20 meters. Deeper installations (to 50m) possible with strengthened line shaft and intermediate bearings.
Q3: Do you provide NACE MR0175 / MR0103 certification?
ج: Yes. Super Duplex 2507 pumps can be supplied with NACE compliance for sour service (H₂S) environments if required.
Q4: How do I order a pump for a specific seawater treatment project?
ج: Contact our technical sales team with: flow, head, seawater temperature, chloride concentration, and any solids content. We will size and quote a Super Duplex SS 2507 vertical turbine pump within 48 hours.
Contact Hunan Durafort Pumps Today
Don’t let corrosion shut down your seawater treatment operation. Upgrade to Super Duplex SS 2507 vertical turbine pumps – built by مضخة هونان شيانغمي, a trusted Chinese manufacturer with global experience.
البريد الإلكتروني: sales@deyangforge.com
الموقع الإلكتروني: www.deyangforge.com
Factory: Changsha, Hunan, China – ISO 9001 certified
