Titanium Alloy Carbon Steel Semi-Welded Exchanger

• Customization: Available
• After-sales Service: Online Support, Video Technical Support
• Warranty: 1 Year
• Model NO.: customization
• Certification: CE, ISO, RoHS
• Application: Heater, Cooler, Vaporizer, Condenser
• Principle: Recuperative Heat Exchanger
• Style: Semi-Welded Plate Heat Exchanger
• Material: Stainless Steel
• Key Selling Points: Leak-Proof Semi-Welded Design
• Maximum Working Pressure: Customized
• Condition: New
• Core Selling Point: High Efficiency & Corrosion Resistance
• Channel Type: U-Type Channel / Semi-Welded Channel
• Plate Material: AISI 304/316L/Titanium/C-276/Sm0254/904L/ Nickel a
• Gasket Material: NBR / EPDM / FKM
• Transport Package: Wooden Case
• Specification: According to Customer Requirements
• Trademark: HengLiu
• Origin: Suzhou
• HS Code: 1601001010
• Production Capacity: 50000pieces/Years
• Package Size: 120.00cm * 100.00cm * 160.00cm
• Package Gross Weight: 600.000kg

Product Description

Semi-Welded Structure – Best of Both Worlds

One channel is fully welded for high-pressure or corrosive fluids, while the other uses replaceable gaskets for easy maintenance.
Suitable for ammonia, glycol, brine, CO2, and chemical media.

 

· Laser-welded plate pairs for high durability
 
 · Suitable for high-pressure & corrosive media
 
 · Gasketed channel for easy maintenance
 
 · High thermal efficiency, compact footprint
 
 · Leak-proof design with stable operation

Item	Specification(Values differ by model and actual operating conditions.)
Plate Material	AISI 304 / 316L / Titanium / C-276 / SMO254 / 904L / Nickel alloy
Gasket Material	NBR, HNBR, EPDM, FKM, PTFE (on request)
Design Pressure	Up to 40 bar(depending on model / gasket type)
Temperature Range	-40℃ ~ +180℃ (standard) / up to 200℃ (high-temperature FKM)
Heat Transfer Area	10–300 m²
Connection Size	DN50–DN250 (up to DN300 on request)
Frame Material	Painted carbon steel / Stainless steel frame

Application Scenario

Maintenance Highlights for Semi-Welded Plate Heat

Regular Cleaning for Stable Heat Transfer Efficiency

Gaskets Are Wear Parts and Must Be Periodically Inspected

Plates Must Be Checked for Weld Integrity and Corrosion

Semi-welded heat exchangers require regular cleaning—CIP every 3–6 months and offline dismantling cleaning every 12–24 months—to effectively remove scale and deposits, ensuring stable heat transfer performance and extending service life.

Gaskets are consumable parts and should be inspected every 6–12 months for hardening, cracking, or detachment. Aged gaskets must be replaced promptly to avoid leakage or sealing failure that could cause unplanned shutdowns.

Plate inspection should focus on weld cracks, pinhole corrosion, and deformation. Any signs of perforation or cross-media leakage risk require immediate replacement of plates or welded pairs to ensure safe system operation.

Correct Assembly Sequence and Compression Dimension Are Essential

Perform Safety Checks and Increase Pressure Gradually

Adequate Spare Parts Help Minimize Downtime

During assembly, plates must follow the A+B / B+A sequence, bolts should be tightened diagonally and evenly, and the final compression length must match the nameplate A-dimension to ensure proper flow channels and reliable sealing.

Before starting or stopping the system, verify that valves, gauges, seals, and connections are in good condition. When starting up, pressure should be increased gradually to avoid water hammer, which could damage welds or gaskets.

It is recommended to stock 5–10% spare gaskets, a full set of plates, and welded plate pairs for ammonia systems, along with spare bolts and seals. Adequate spare parts allow quick replacement and significantly reduce downtime.

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