KFT (for city gas) and KFP (for propane gas) | KYOSEI, suppliers of gas and water piping materials, including pipes, valves, and governors

Product information

Stainless steel flexible pipes


KFT (for city gas) and KFP (for propane gas),
LIA approved products

KFT (for city gas) and KFP (for propane gas)

Rated products used for compartment penetration under the Fire Service Act and an approved product by the Ministry of Land, Infrastructure, Transport and Tourism

Gas flexible pipe that substantially reduces work hours

Today’s diverse house-building techniques require different types of gas piping.
KFT and KFP are gas piping materials that fit new building techniques.
They are easy to bend, but hard to break, enabling easy installation.
Time-consuming indoor piping work now becomes fast and effective.

  • Easy to bend and install
    Easy to bend and install
  • Leakage detector ensures safety.
    Leakage detector ensures safety.
  • Stainless steel ensures high corrosion resistance.
    Stainless steel ensures high corrosion resistance.
  • Available for various types of fittings and accessory parts
    Available for various types of fittings and accessory parts
  • Easy to cut with dedicated cutter
    Easy to cut with dedicated cutter
  • Lightweight and easy to carry
    Lightweight and easy to carry

Features

  • Stainless steel ensures high corrosion resistance.

    Flexible pipes are made of stainless steel, providing excellent durability and anti-corrosiveness. Soft PVC coating eliminates the need for additional coatings, giving a beautiful appearance.

  • Easy to bend and install

    Much easier to install compared with installations using galvanized steel gas pipes (SGPs). Not needing elbows or T-fittings, this pipe is easy to bend by hand according to the piping route, saving time and money.

  • Very small bending radius

    Flexible pipe’s bending radius is only about 20 mm (10A and 15A), saving space and enabling flexible installation in narrow spaces, for diagonal piping, and complex routes.

  • Available for various types of fittings and accessory parts

    Availability of various applicable parts, such as easy-to-install dedicated fittings, branch headers, and branch T-fittings, enables applications for almost all working and installation requirements.

  • Easy to cut with dedicated cutter

    Quick cut is available by using a dedicated pipe cutter. Precise on-site cutting is not needed because slightly long pipes can be flexibly adjusted to the site, substantially reducing work hours.

  • Lightweight and easy to carry

    Flexible pipe is lightweight; about 8 kg per 60 m length (10A one roll). It is easy to carry and install.

Specifications

KFT Dimensional drawing

* Scroll the page right or left to view the complete table.

Unit: mm

Materials JIS G4305 SUS304
Nominal dia. 10A 15A 20A 25A
Original pipe Steel pipe thickness, t 0.20 0.20 0.20 0.25
Outer diameter, do 14.2 18.4 24.2 30.8
Inner diameter, di 11.5 15.0 20.8 25.0
Pitch (10 threads) 34.0 38.0 42.0 60.0
Radius R1 (reference) 0.7 0.7 0.8 1.1
Radius R2 (reference) 1.00 1.10 1.20 1.60
Thread height, h (reference) 1.15 1.50 1.50 2.65
Coating Base thickness, t1 0.60 0.60 0.60 0.60
Thread height, t2 (reference) 0.15 0.15 0.15 0.15
Coating thickness, t3 (reference) 0.75 0.75 0.75 0.75
Number of threads (reference) 40 50 60 80
Coated pipe Outer diameter, D 15.7 19.9 25.7 32.3
Roll length, L (m) 30・60 30・60 30・60 ※30・60
Coating Soft PVC

* KFP25A only is produced in a roll length of 30 m. A roll with 25A x 60 m can be produced on order.

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