Khi xử lý seawater, 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.
Công ty Bơm Durafort Hồ Nam – a professional pump manufacturer in China – offers a complete range of Máy bơm tuabin đứng LC manufactured in Thép không gỉ siêu kép SS2507, along with other premium alloys (Căn hộ hai tầng 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:
| Tài sản | Superior Duplex 2507 | Duplex 2205 (for comparison) |
|---|---|---|
| PRE (Pitting Resistance Equivalent) | > 40 | > 35 |
| Giới hạn chảy | ~550 MPa | ~450 MPa |
| Chloride SCC Resistance | Tuyệt vời | Tốt |
| Critical Crevice Temp (CCT) | ~50°C in seawater | ~35°C in seawater |
Đối với 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:
| Tham số | Value |
|---|---|
| Phạm vi lưu lượng | 50 – 8.400 m³/giờ |
| Dải đầu | 15 – 150 m |
| Các tùy chọn tốc độ | 980 / 1480 / 2970 r/min |
| Max. Temperature | ~150°C |
| Materials (Wetted parts) | Super Duplex SS2507, Duplex 2205, 904L, CD4MCu, Titanium, SS316L, etc. |
| Ứng dụng | 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.
Advantages of Choosing Hunan Durafort Pumps
As a nhà sản xuất máy bơm chuyên nghiệp tại Trung Quốc, 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
Thời gian giao hàng ngắn – 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 Căn hộ hai tầng 2205, 904L, CD4MCu, và Titan – 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 |
|---|---|---|---|
| Gang | <25 | <1 (rapid corrosion) | Not recommended |
| SS316L | ~25 | 2–5 (pitting after 1-2 yrs) | No |
| Căn hộ hai tầng 2205 | ~35 | 8–12 | Limited at high temp |
| Thép Super Duplex 2507 | >40 | 15–25+ | Tuyệt vời |
| Titanium Grade 2 | ~N/A | 30+ (very expensive) | Excellent but costly |
Đối với seawater treatment 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?
A: 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?
A: 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?
A: 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?
A: 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 Công ty Bơm Durafort Hồ Nam, a trusted Chinese manufacturer with global experience.
Email: sales@deyangforge.com
Trang web: www.deyangforge.com
Factory: Changsha, Hunan, China – ISO 9001 certified
