Home / Products / Flexible Metal Conduits / Interlock Type-A Conduit with Double Wire

Interlock Type-A Conduit with Double Wire

Semi-Interlock Double Spring Tube (SAWSP)

 

Stainless steel wire is inserted into the spiral valley of the Interlock Type A Conduit (Semi-Inter Tube) to create a larger bending radius. Excellent pliability and withstands repeated bending.

 

Features and Attributes: 

  • The doubling of the stainless steel wire produces a stable outer diameter. The increased stability results in no elasticity, and can provide optimum protection for optical fibers. Especially for laser fibers, quartz-type optical fibers, hollow optical fibers, etc.
  • Stainless steel wire is inserted into the spiral valley of the Interlock Type A Conduit to create a larger bending radius. (Refer to figure 1 in Technical Specs.)
  • It is also possible to modify the bending radius by changing the wire diameter and rod.
  • Excellent pliability.
  • Withstands repeated bending.
  • RoHS Compliant 

Standard Product:

  • Flexible Tube Material: Stainless Steel (SUS304), Aluminum (Optional) 
  • Spring Material:  Stainless Steel (SUS304), Aluminum (Optional)
  • Sheathing Variety: Glossy Soft Polyvinyl-Chloride (PVC), Polyethylene (LDPE , HDPE), Polyurethane (TPU), Polyolefin (PO). More options are available, please view Customizations 
  • Length: Maximum continuous length is 10 meters. However tubes can be joined to make a maximum of 30 meters in length. Please contact us for details. 
  • All customizations outside of the standard listed above, will be custom and made to order. Please view Customizations for a full listing of available options.

Services Available Upon Request: 

  • Double Washing: Double washing treatment (using detergent) can be applied to tubes for high precision applications.
  • Chemical Polishing: We offer tubes with chemical polishing, which provides extra shine for optical applications. (Special polishing for semiconductor-quality applications also available.) 

Common Applications: 

  • Protection of optical fiber for dental lasers
  • Protection of optical fiber for high-power lasers and welding machines

Stock Level: Non-stock made to order item. General lead time is 4-6 weeks.

Figure 1

 

Standard type

PVC coating type

Model (Part Number) 

ID
±0.2mm (inch)

OD
±0.3mm
(inch)

Bending
Radius
±30(mm)

Max Length one stretch (m)

Approx Weight
(g/m)

MOQ  (m)

Stock

Model (Part Number)

OD
±0.3mm (inch)

Std.

Length (m)

Approx
Weight
(g/m)

Max Length one stretch (m)

Stock

SAWSP-3.2N

3.2 (0.126)

5.2 (0.205)

60

10

67

30

Contact Us

SAWSPP-3.2N

6.5 (0.256)

100

99

10

Contact Us

SAWSP-4N

4.0 (0.157)

6.0 (0.236)

70

10

70

30

Contact Us

SAWSPP-4N

7.0 (0.276)

30

103

10

Contact Us

SAWSP-4.5N

4.5 (0.177)

6.5 (0.256)

80

10

72

30

Contact Us

SAWSPP-4.5N

7.7 (0.303)

30

106

10

Contact Us

SAWSP-5N

5.0 (0.197)

7.0 (0.276)

80

10

74

30

Contact Us

SAWSPP-5N

8.6 (0.339)

30

109

10

Contact Us

SAWSP-6N

6.0 (0.236)

8.0 (0.315)

110

10

77

30

Contact Us

SAWSPP-6N

9.6 (0.378)

30

113

10

Contact Us

SAWSP-7N

7.0 (0.276)

9.3 (0.366)

115

10

80

30

Contact Us

SAWSPP-7N

11.0 (0.433)

30

118

10

Contact Us

SAWSP-8N

8.0 (0.315)

10.2 (0.402)

115

10

83

30

Contact Us

SAWSPP-8N

12.0 (0.472)

30

122

10

Contact Us

SAWSP-9N

9.5 (0.374)

12.2 (0.480)

120

10

86

30

Contact Us

SAWSPP-9N

14.0 (0.551)

30

126

10

Contact Us

SAWSP-10N

10.0 (0.394)

13.0 (0.512)

150

10

90

30

Contact Us

SAWSPP-10N

15.4 (0.606)

30

132

10

Contact Us

SAWSP-11N

11.0 (0.433)

14.2 (0.559)

300

10

Please ask

30

Contact Us

SAWSPP-11N

16.5 (0.650)

30

Please ask

Contact Us

SAWSP-13N

13.0 (0.512(1/2″))

16.0 (0.630(5/8″))

Contact us

 10

Please ask

30

 Contact Us

SAWSP-16N

16.0 (0.630(5/8″))

18.7 (0.736)

Contact us

 10

Please ask

30

Contact Us

 

Below are the general available options for customization. Please be advised that there may be restrictions based upon size, and application for usage. Please Contact Us for support on your customization requirements!  

Optional Material for Wire: Aluminum 

Contact Us for Samples!

Available Flexible Metal Tube Materials:

Material Grade

 Application

Features Applicable Tube Type
Stainless Steel – SUS304 (Standard)
– SUS303
– SUS316
– SUS430
– General Industrial
– Medicinal
– Rigid
– Does not Rust
– Most tube type
Aluminum – General Industrial
– Medicinal
– Does not Rust
– Anti-Static
– Lightweight but Less Sturdy
– Excellent Thermal Conduction
– Square Lock A
– Interlock Type B
– Screw Tube
Titanium – General Industrial
– Medicinal
– Space Engineering
– Rigid
– Anti-Static
– Lighter than Stainless Steel
– Square Lock A
Bronze Phosphate – C5341 – Noise Counter-Measure – Electromagnetic Compatibility (EMC) – Most tube type
Copper – Noise Counter-Measure – Electromagnetic Compatibility (EMC) – Most tube type
Brass – Noise Counter-Measure – Electromagnetic Compatibility (EMC) – Most tube type
Steel – Galvanized Steel Strip
– SK Material (Hardest Steel)
– General Industrial – Affordable Price
– Heavy
– Rusty
– Generally Needs to be Sheathed
– Most tube type

Sheathing Materials and Information

Adding a resin/rubber coating to a flexible tube provides the following additional benefits:
– Waterproof/resistant
– Oil-proof/resistant
– Attractive appearance
– Additional strength
– Superior insulation

**The following chart displays the most common materials available. Please consult us regarding specifications, minimum lot, delivery date, sheathing combinations, and additional materials available (including any heat or chemical resistance requirements).

 

Material Type (Code) Characteristic Color Resin Feature Surface Appearance
PVC/Polyvinyl Chloride (P) Soft Black (Standard), Gray, White, Ivory, Red, Pink, Orange, Yellow, Yellow-Green, Green, Blue, Clear – Pliable
– Chemical Resistant
– Heat Resistant up to 60°C
– High Oil Resistance
– Glossy
– Matte
– Clear
Semi rigid Black – Slightly Hard
– Smooth Surface
– Chemical Resistant
– Heat Resistant up to 60°C
– Oil Resistant
– Glossy
Flame Resistant Black, Gray, White, Red, Pink, Orange, Yellow, Green, Blue – Pliable
– Chemical Resistant
– Heat Resistant up to 60°C
– High Oil Resistance
– Glossy
Flame Resistant, UL Standard Black – Pliable
– Chemical Resistant
– Heat Resistant up to 105°C
– High Oil Resistance
– Matte
Polyethylene (PE) Low density (LDPE) Black – Harder than the Soft Hard Type
– Smooth Surface
– Chemical Resistant
– Heat Resistant up to 70°C
– High Oil Resistance
– Glossy
Polyester Elastomer
(TEEE)
We can provide soft(ShoreA90) to Semi rigid(ShoreD72) Black Opaque – Pliable
– Weatherproof
– Heat Resistance up to 120°C
– Glossy
Silicone Rubber (Si) Soft Black, Gray – Pliable
– Heat Resistance up to 180°C
– Matte
Fluorocarbon Resin
(FEP) (ETFE) (PFA)
Flame Resistant Black – Less Pliable
– Excellent Chemical and Oil Resistance
– Slippery Non-Stick Surface
– Heat Resistant up to 220°C
– Glossy
Polyurethane (PU) Ester Grade Black – Pliable
– Abrasion Resistant
– Heat Resistant up to 70°C
– Glossy
Ether Grade Black, Ivory – Pliable
– Abrasion Resistant
– Water Soluble
– Heat Resistant up to 70°C
– Glossy
Olefin Elastomer (O) Soft Black – Pliable
– Weatherproof
– Heat Resistant up to 60°C
– Matte

PVC Sheathing Varieties

 

 

Figure Num. Sheathing Variety Part Number Code Features
1 Tight-Fitting KSP- __N – Standard item
– PVC fills the spiral valley to make the finished surface even and smooth.
2 Vacuum Sheathing KSP-__N-B – During processing, sheathing is applied in a vacuum.
– The finished surface maintains the spiral pattern of the coil.
3 Bagging Sheathing KSP-__N-F – Sheathing is applied only on the surface of the tube and the spiral valley contains no PVC. The surface of the sheathing will be completely smooth.
N/A Heat Shrink Sheathing KSP-__N + Shrink tube type# – Please contact us for more details.

Other Services

Double Washing and Chemical Polishing

Double washing:
Double washing treatment (using detergent) can be applied to tubes for high precision applications.

Chemical polishing:
We offer tubes with chemical polishing, providing extra shine for optical applications.
※ Special polishing for semiconductor-quality applications also available.

Technical Drawing: Contact Us for the password and then View SAWSP or SAWSPPO

Instructions on How to Measure Bend Radius: PDF Here