Daesangtechlon

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Domestic Agency There is the passion for the technology in the best value of Gunho

GUNHO E&C Co. will provide customers the best quality by partnership with the companies of the top technical skills and professionalism in each field.

DaesangTechlon Co., Ltd. uses a new material named PTFE, based on the highest technology and know-how of the employees. With this, the products create a non-corrosive environment, and by securing the new material ETFE, the company is also capable of erecting chemical plants. GUNHO E&C Co,. Ltd. will provide the best products as a partner of DaesangTechlon Co., Ltd., which focus on customer satisfaction with innovative technologies, in the Ulsan region.

PTFE & ETFE & PP Lined Pipe, Fitting

The most typical of the lined product is the insert lining, which has been developed through years of experience and know-how of the technical research team of Daesang Techlon, Chemical, petrochemical, and pharmaceutical, as well as food industries are using these products for processes which require high resistance against high temperature and corrosion, as well as non-adhesiveness.

PTFE & PFA & PP Tube, Lined Flexible Hose, Bellows

The most typical of the lined product is the insert lining, which has been developed through years of experience and know-how of the technical research team of Daesang Techlon. Chemical, petrochemical, and medicine, as well as food industries are 니sing these products for processes which require high resistance against high temperature and corrosion,as well as non-adhesiveness.

PFA & PTFE Lined Valve

Type of fluoroplastic

PTFE Polytetrafluoroethylene
Max, ℃ 260°C
Key Features
  • 1. Thermal resistance, chemical resistance, electric characteristics (high-frequency characteristics), non-adhesion, good self-lubrication.
  • 2. The most basic material. Can be used universally and provided in various methods depending on the application.
Operating Temperature
  1. 1Tank Sheet Lining
  2. 2Pipe Lining
  3. 3Fitting Lining
  4. 4Gasket
  5. 5Processed Materials
  6. 6Shaft Base
  7. 7Coating
PFA Pertluoroallcoxy
Max, ℃ 260°C
Key Features
  • Has equivalent characteristics to PTFE.
  • Injection or「thermal forming is possible.
  • Can provide high quality products through ROTO MOLDING.
Operating Temperature
  1. 1Tank Sheet Lining
  2. 2Shielding of Wires
  3. 3Pipe
  4. 4Heat exchanger
  5. 5Fitting
  6. 6Coating
  7. 7Semi-Conductor Products
ETFE Ethylene-tetra Fluoroethy-lene copolymer
Max, ℃ 150°C ~ 180°C
Key Features
  • 1. High mechanical strength. Good electric insulation and radiation resistance. High processing efficiency.
  • 2. Forming through ROTO MOLDING technology
    • Can form a complicated object in a single piece
    • Good adhesion that is reliable under vacuum.
    • The thickness of the lining can be adjusted between 2mm and 10mm freely.
    • No welding seams. Even thickess.
    • Shorter production and lead time.
Operating Temperature
  1. 1Tank Lining
  2. 2Pipe Lining
  3. 3Fitting
  4. 4Shielding of Wires
  5. 5Coating

Comparsion of The Characteristics of The Fluoroplastic Lining

ROTO MOI_DING (ETFE) SHEET LINING (PTFE) COATING (ETFE)
Chemical Resistance No reaction against strong acid or alkali solvents Same as the left Same as the left
Thermal Resistance (Max. Operating Temperature) 120°C The thermal resistance of 100℃ PTFE is rather high. But, the thermal resistance of the adhesive is low. 120°C
Adhesion Strength The resin is welded, making it possible to use the material under negative pressure. High adhesion strength ensures no local air layers after attachment reducing the risks of separation The resin is welded, making it possible to use the material under negative pressure.
Resistance Against Permeation No infiltration, as the product is formed as a single piece in a 3mm or higher thickness. The sheet itself is not permeated.
But the welded part can have PIN HOLES
The coating thickness is thinner.
Therefore, infiltration is feared after a prolonged usage.
(Max.1000㎛)
Non-Adhesion A single-piece structure. Due to the characteristics of TEFLON, the surface tension is low, improving the non-adhesion property. Foreign objects may stick to the sheet welding part A single-piece structure. Due to the characteristics of TEFLON, the surface tension is low, improving the non-adhesion property.
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Site Work Cannot be applied at site.
(Requires dedicated equipment)
Can be applied at site. Cannot be applied at site.
(Requires dedicated equipment)
SIZE Limitations In size
(∮2800 x 3300ℓ)
No limitations in Size Limitations in size
(∮3000 x 5000ℓ)
Application Efficiency Can build complicated forms
(no internal extrusions)
welding is difficult,
only simple forms can be built
Can build complicated forms
Maintenance Efficiency While local welding is possible,
a wide area cannot be repaired
A wide area can be repaired, as well. While local welding is possible, a wide area cannot be repaired
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