Pressure Vessels & Thermal Components
WKDL air coolers & evaporators, shell-and-tube heat exchangers, plate heat exchangers, and ASME/PED pressure vessels for marine refrigeration, cold storage, offshore platforms, and industrial process cooling.
Trusted by Cold Storage Operators, Shipyards & Process Plants
Complete Thermal Equipment Supply from China
Hicool is an authorized distributor for WKDL air coolers and evaporators — one of China’s largest manufacturers of industrial refrigeration heat exchange equipment. We also supply shell-and-tube heat exchangers, plate heat exchangers, and ASME-coded pressure vessels from qualified fabricators in Jiangsu and Zhejiang provinces.
WKDL Air Coolers & Evaporators CE ISO 9001
66 models across 6 product series covering the full range of industrial and marine refrigeration applications:
- DL Series — Ceiling-mounted coolers for cold rooms (+5°C to -25°C), fin spacing 4-12mm
- DD Series — Floor-standing dual-discharge units for large freezer rooms
- DJ Series — Heavy-duty air coolers for blast freezing and low-temperature storage (-25°C to -45°C)
- KFS Series — Blast chillers/freezers for food processing and pharmaceutical applications
- DLS Series — Side-blow coolers for narrow corridor and tunnel freezer installations
- DDF Series — Hot-dip galvanized units for corrosive environments (seafood, chemical)
All units available for ammonia (R717), R507A, R404A, R134a, and CO2 (R744) refrigerant systems. Copper tubes with aluminum fins (standard) or stainless steel options for corrosive environments.
Shell & Tube Heat Exchangers TEMA ASME VIII
Custom-designed condensers, evaporators, and coolers for marine and industrial applications. Materials: carbon steel, stainless steel 316L, titanium, and CuNi 90/10. Design pressures to 40 bar. ASME U-stamp available.
Plate Heat Exchangers CCS/DNV ASME
Gasketed and brazed plate heat exchangers for LO cooling, FW cooling, central cooling, and HVAC applications. Titanium, 316L, and Hastelloy plate materials. Compatible with Alfa Laval, GEA, and Sondex frame sizes.
Thermal Equipment Quality Process
Pressure-rated equipment demands rigorous quality control at every stage.
Thermal Design Review
Verify heat duty, LMTD, fouling factors, and pressure drop against your process conditions. Confirm material selection for corrosion resistance and temperature rating.
Fabrication Surveillance
Monitor welding procedures (WPS/PQR qualified), material certificates, tube-to-tubesheet joint quality. ASME AI involvement for U-stamp items.
Testing & Inspection
Hydrostatic pressure test (1.5× design), leak test, NDE (RT/UT/PT/MT as required). Third-party inspection on request.
Certification & Delivery
ASME data report (U-1/U-1A), PED DoC, CCS/DNV certificates, thermal calculation report, GA drawings, O&M manual. Nitrogen-filled for storage.
Product Categories
WKDL Air Coolers
DL/DD/DJ/KFS/DLS/DDF series. 66 models for cold storage, freezing, and marine refrigeration.
66 products →Shell & Tube Heat Exchangers
TEMA/ASME condensers, evaporators, coolers. CS, SS, Ti, CuNi materials.
Custom design →Plate Heat Exchangers
Gasketed and brazed PHE for marine and industrial cooling. Multi-brand compatible.
View products →Pressure Vessels
ASME U-stamp, PED, CCS certified. Air receivers, separators, accumulators.
Custom design →Recent Thermal Equipment Cases
48 Evaporators for Cold Storage Complex — Vietnam
- Facility 15,000 m² Cold Storage
- Scope 16× DL + 20× DD + 12× DJ units
- Refrigerant Ammonia (R717)
- Delivery FOB Shanghai, 28 days
LNG Carrier Engine Room Cooling — Dual Class
- Vessel 174,000 m³ LNG Carrier
- Scope 5× PHE (LO/FW/JW coolers)
- Material Titanium plates
- Classification CCS + DNV dual approval
CuNi Shell & Tube Condenser — Offshore Platform HVAC
- Facility Offshore Production Platform
- Scope 450 kW condenser, CuNi 90/10 tubes
- Classification ABS Certified
- Delivery FOB Shanghai, 38 days
Certifications & Design Standards
| Certification | Body | Applicable Equipment | Verification |
|---|---|---|---|
| ASME U | ASME / National Board | Pressure vessels, shell & tube HEX | U-stamp + data report |
| PED 2014/68/EU | EU Notified Body | Pressure equipment for EU market | Module H/G certification |
| CCS/DNV/BV | Classification Societies | Marine heat exchangers, vessels | Type approval + witness test |
| TEMA | TEMA Standards | Shell & tube design | TEMA class (B/C/R) compliance |
| CE | EU | All WKDL air coolers | DoC per shipment |
| ISO 9001 | TÜV / SGS | All manufacturing facilities | QMS audit verified |
Featured Air Coolers & Evaporators
Browse our WKDL product range — 66 models covering every cold storage and refrigeration application.
| Product | Cooling Area | Refrigerant | Defrost Type | |
|---|---|---|---|---|
| WKDL DD-100 Freon Floor Unit Cooler — 100 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-12 Freon Floor Unit Cooler — 12 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-120 Freon Floor Unit Cooler — 120 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-140 Freon Floor Unit Cooler — 140 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-18 Freon Floor Unit Cooler — 18 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-22 Freon Floor Unit Cooler — 22 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-25 Freon Floor Unit Cooler — 25 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-30 Freon Floor Unit Cooler — 30 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-40 Freon Floor Unit Cooler — 40 m² | — | R22, R404A, R507 | Electric | View → |
| WKDL DD-50 Freon Floor Unit Cooler — 50 m² | — | R22, R404A, R507 | Electric | View → |
Thermal Equipment Selection Guide
| Application | Equipment Type | Key Specs to Provide | Typical Lead Time |
|---|---|---|---|
| Cold room (+5 to -25°C) | DL/DD Evaporator | Room volume, target temp, refrigerant | 2-4 weeks |
| Blast freezing (-25 to -45°C) | DJ/KFS Evaporator | Product throughput, target temp, defrost type | 3-4 weeks |
| Marine engine room cooling | Plate Heat Exchanger | Heat duty (kW), fluids, pressures, class | 4-6 weeks |
| Seawater cooling (corrosive) | Shell & Tube (CuNi/Ti) | Heat duty, fluids, pressure, material pref. | 5-8 weeks |
| Process vessels | ASME Pressure Vessel | P&ID, design conditions, material spec | 8-14 weeks |
Technical Resources
10 Tips to Buy Marine Refrigeration Equipment from China
Practical guidance on selecting and sourcing cold room and provision plant equipment.
Top 10 Marine Air Conditioner Manufacturers in China
Factory comparison, certification status, and sourcing tips for HVAC equipment.
Perfect Climate Control on the Water — Marine Aircon Guide
System selection, sizing, and specification for marine accommodation air conditioning.
Find Verified Thermal Equipment Manufacturers
Our Yellow Pages directory includes heat exchanger fabricators, evaporator manufacturers, and pressure vessel shops — all independently assessed.
Frequently Asked Questions
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Send your thermal calculation, process data sheet, or cold room specifications. We provide technical selection, pricing, and certification confirmation within 24 hours.
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