Custom Tubing adapter STL file ⌀ 36–20 mm (Length: 35 mm) 📦#9087

STL Download STL 1
Create a new model expert
from scratch search for a model
Straight tube reducer ⌀36 mm to ⌀20 mm in STL 3D format. Final length of this coupler is 35 mm. The larger-diameter tube has a thickness of 4 mm and a length of 15 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm as well. The ends feature a fillet to ease the connection.
Generation date: 2026-05-22
3D Model Tubing adapter STL file ⌀ 36–20 mm (Length: 35 mm)

3D model download

Free
  • inline-tube-adapter-lenA15mm-d_model9087-nb0_dd{id}.stl : 10.7 Mo
STL Mesh quality : Linear deflection 0.05 Angular deflection 0.05
No compliance warranty No compliance warranty
(attribution - commercial use allowed)
Safe download
Instant .zip download — no email, no account

Values for this model

This model was generated by the Inline tube adapter template, with the following values:
Parameter Value
#1 side A length 15 mm (≃0.59 in)
#2 side A outer diameter 36 mm (≃1.42 in)
#3 side A thickness 4 mm (≃0.16 in)
#4 side B length 15 mm (≃0.59 in)
#5 side B outer diameter 20 mm (≃0.79 in)
#6 side B thickness 5 mm (≃3/16 in)
#7 transition length 5 mm (≃3/16 in)
#8 axis offset 0 mm (0 in)
#9 ends fillet fillet on both inside
and outside
Metadata Value
inner diameter (side A) 28 mm (≃1.10 in)
inner diameter (side B) 10 mm (≃0.39 in)
total length 35 mm (≃1 3/8 in)
illustration of the parameters
Parameter overview

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 side A length lenA
#2 side A outer diameter diA
#3 side A thickness thA
#4 side B length lenB
#5 side B outer diameter diB
#6 side B thickness thB
#7 transition length tra
#8 axis offset ofs
#9 ends fillet fil

Related 3D models

To search for a model based on your own parameters, go to the template page Inline tube adapter 

Tube adapter STL file ⌀ 32–20 mm (Length: 35 mm) (📦 #9086)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–20 mm (Length: 35 mm)
Inline tube junction ⌀32 mm to ⌀20 mm in STL 3D format. Final length of this sleeve is 35 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 15 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm as well. The ends feature a fillet to ease the connection.
Parameter Value Unit
side A length 15 mm
side A outer diameter 32 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 34–20 mm (Length: 40 mm) (📦 #9093)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 34–20 mm (Length: 40 mm)
Straight tube adapter ⌀34 mm to ⌀20 mm in STL 3D format. Length of this adapter is 40 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm. The ends have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 34 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 25–20 mm (Length: 35 mm) (📦 #9082)

1 object(s) - format STL
Tube adapter STL file ⌀ 25–20 mm (Length: 35 mm)
Inline sleeve ⌀25 mm to ⌀20 mm in STL format. Final length of this sleeve is 35 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 15 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 15 mm as well. The ends are rounded to make tube connection easier.
Parameter Value Unit
side A length 15 mm
side A outer diameter 25 mm
side A thickness 4 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 36–17 mm (Length: 55 mm) (📦 #9066)

1 object(s) - format STL
Tube adapter STL file ⌀ 36–17 mm (Length: 55 mm)
Inline fitting ⌀36 mm to ⌀17 mm in STL 3D format. Length of this adapter is 55 mm. The larger-diameter tube has a thickness of 5 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 4 mm and a length of 20 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 25 mm
side A outer diameter 36 mm
side A thickness 5 mm
side B length 20 mm
side B outer diameter 17 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm) (📦 #7384)

1 object(s) - format STL
Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm)
Straight tubing adapter ⌀52 mm to ⌀24 mm in STL 3D format. Total length of this fitting is 40 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 10 mm. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 52 mm
side A thickness 4 mm
side B length 10 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 38–31 mm (Length: 50 mm) (📦 #8960)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 38–31 mm (Length: 50 mm)
Inline tube junction ⌀38 mm to ⌀31 mm in STL 3D format. Final length of this adapter is 50 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 22 mm, the smaller one of 20 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 22 mm
side A outer diameter 38 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 31 mm
side B thickness 3 mm
transition length 8 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 32–31 mm (Length: 22 mm) (📦 #8961)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 32–31 mm (Length: 22 mm)
Straight tube connector ⌀32 mm to ⌀31 mm in STL 3D format. Final length of this sleeve is 22 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 9 mm, the smaller one of 8 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 9 mm
side A outer diameter 32 mm
side A thickness 3 mm
side B length 8 mm
side B outer diameter 31 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 38–34 mm (Length: 28 mm) (📦 #4051)

1 object(s) - format STL
Tubing adapter STL file ⌀ 38–34 mm (Length: 28 mm)
Inline sleeve ⌀38 mm to ⌀34 mm in STL 3D format. Length of this connector is 28 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 10 mm as well. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 10 mm
side A outer diameter 38 mm
side A thickness 3 mm
side B length 10 mm
side B outer diameter 34 mm
side B thickness 3 mm
transition length 8 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 32–15 mm (Length: 50 mm) (📦 #2441)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–15 mm (Length: 50 mm)
Inline tube reducer ⌀32 mm to ⌀15 mm in STL format. Length of this adapter is 50 mm. The thickness of the tubes is identical: 3.5 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends feature an internal fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 32 mm
side A thickness 3.5 mm
side B length 20 mm
side B outer diameter 15 mm
side B thickness 3.5 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm) (📦 #2197)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–29 mm (Length: 55 mm)
Inline tube reducer ⌀35 mm to ⌀29 mm in STL 3D format. Final length of this junction is 55 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends feature a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 29 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 35–30 mm (Length: 55 mm) (📦 #2189)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–30 mm (Length: 55 mm)
Inline tube junction ⌀35 mm to ⌀30 mm in STL format. Total length of this adapter is 55 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 20 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 30 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 32–15 mm (Length: 19 mm) (📦 #2447)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–15 mm (Length: 19 mm)
Straight tube connector ⌀32 mm to ⌀15 mm in STL format. Total length of this fitting is 19 mm. The thickness of the tubes is identical: 3.5 mm. The larger-diameter tube has a length of 7 mm, the smaller one of 7 mm as well. The ends have a fillet on the inside.
Parameter Value Unit
side A length 7 mm
side A outer diameter 32 mm
side A thickness 3.5 mm
side B length 7 mm
side B outer diameter 15 mm
side B thickness 3.5 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 42–21 mm (Length: 60 mm) (📦 #8507)

1 object(s) - format STL
Tubing adapter STL file ⌀ 42–21 mm (Length: 60 mm)
Tube reducer ⌀42 mm to ⌀21 mm in STL 3D format. Length of this junction is 60 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 20 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 42 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 21 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 35–20 mm (Length: 84 mm) (📦 #9825)

1 object(s) - format STL
Tubing adapter STL file ⌀ 35–20 mm (Length: 84 mm)
Straight tube adapter ⌀35 mm to ⌀20 mm in STL 3D format. Final length of this coupler is 84 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 24 mm, the smaller one of 50 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 24 mm
side A outer diameter 35 mm
side A thickness 5 mm
side B length 50 mm
side B outer diameter 20 mm
side B thickness 5 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 39–35 mm (Length: 60 mm) (📦 #4018)

1 object(s) - format STL
Tube adapter STL file ⌀ 39–35 mm (Length: 60 mm)
Straight tubing adapter ⌀39 mm to ⌀35 mm in STL format. Total length of this reducer is 60 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 39 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 32–25 mm (Length: 89 mm) (📦 #9829)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 32–25 mm (Length: 89 mm)
Inline tube junction ⌀32 mm to ⌀25 mm in STL 3D format. Total length of this coupler is 89 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 24 mm, the smaller one of 50 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 24 mm
side A outer diameter 32 mm
side A thickness 5 mm
side B length 50 mm
side B outer diameter 25 mm
side B thickness 5 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 72–33 mm (Length: 48 mm) (📦 #2709)

1 object(s) - format STL
Tube adapter STL file ⌀ 72–33 mm (Length: 48 mm)
Tube reducer ⌀72 mm to ⌀33 mm in STL format. Length of this connector is 48 mm. The thickness of the tubes is identical: 3.2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 8 mm. The ends feature a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 72 mm
side A thickness 3.2 mm
side B length 8 mm
side B outer diameter 33 mm
side B thickness 3.2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 36–19 mm (Length: 26 mm) (📦 #2451)

1 object(s) - format STL (5.0/5) 1 vote(s)
Tube adapter STL file ⌀ 36–19 mm (Length: 26 mm)
Tube connector ⌀36 mm to ⌀19 mm in STL 3D format. Length of this adapter is 26 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 8 mm. The ends are rounded on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 10 mm
side A outer diameter 36 mm
side A thickness 3 mm
side B length 8 mm
side B outer diameter 19 mm
side B thickness 3 mm
transition length 8 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 35–18 mm (Length: 26 mm) (📦 #2450)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–18 mm (Length: 26 mm)
Inline tube reducer ⌀35 mm to ⌀18 mm in STL 3D format. Final length of this fitting is 26 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 10 mm, the smaller one of 8 mm. The ends are rounded on the inside to ease the connection.
Parameter Value Unit
side A length 10 mm
side A outer diameter 35 mm
side A thickness 3 mm
side B length 8 mm
side B outer diameter 18 mm
side B thickness 3 mm
transition length 8 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 25–20 mm (Length: 45 mm) (📦 #1101)

1 object(s) - format STL
Tube adapter STL file ⌀ 25–20 mm (Length: 45 mm)
Tube fitting ⌀25 mm to ⌀20 mm in STL 3D format. Length of this reducer is 45 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 15 mm, the smaller one of 15 mm as well. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 15 mm
side A outer diameter 25 mm
side A thickness 3 mm
side B length 15 mm
side B outer diameter 20 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 9–8 mm (Length: 55 mm) (📦 #7472)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 9–8 mm (Length: 55 mm)
Straight tube coupler ⌀9 mm to ⌀8 mm in STL 3D format. Total length of this adapter is 55 mm. The larger-diameter tube has a thickness of 3 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 2.6 mm and a length of 25 mm as well. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 25 mm
side A outer diameter 9 mm
side A thickness 3 mm
side B length 25 mm
side B outer diameter 8 mm
side B thickness 2.6 mm
transition length 5 mm
axis offset 0.0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 60–48 mm (Length: 60 mm) (📦 #8486)

1 object(s) - format STL
Tubing adapter STL file ⌀ 60–48 mm (Length: 60 mm)
Inline tube junction ⌀60 mm to ⌀48 mm in STL format. Total length of this sleeve is 60 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends are rounded to make tube connection easier.
Parameter Value Unit
side A length 20 mm
side A outer diameter 60 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 48 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 51–35 mm (Length: 80 mm) (📦 #1290)

1 object(s) - format STL
Tube adapter STL file ⌀ 51–35 mm (Length: 80 mm)
Tube reducer ⌀51 mm to ⌀35 mm in STL 3D format. Length of this adapter is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 51 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 56–35 mm (Length: 80 mm) (📦 #6630)

1 object(s) - format STL
Tube adapter STL file ⌀ 56–35 mm (Length: 80 mm)
Tubing adapter ⌀56 mm to ⌀35 mm in STL format. Length of this junction is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 56 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 74–50 mm (Length: 50 mm) (📦 #5401)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 74–50 mm (Length: 50 mm)
Tubing adapter ⌀74 mm to ⌀50 mm in STL 3D format. Final length of this junction is 50 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 20 mm
side A outer diameter 74 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 50 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 30–17 mm (Length: 55 mm) (📦 #9056)

1 object(s) - format STL
Tubing adapter STL file ⌀ 30–17 mm (Length: 55 mm)
Inline tubing adapter ⌀30 mm to ⌀17 mm in STL format. Length of this junction is 55 mm. The larger-diameter tube has a thickness of 2 mm and a length of 25 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 20 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 25 mm
side A outer diameter 30 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 17 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 27–16 mm (Length: 60 mm) (📦 #9909)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 27–16 mm (Length: 60 mm)
Tube reducer ⌀27 mm to ⌀16 mm in STL 3D format. Total length of this reducer is 60 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 30 mm. The ends feature an internal fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 27 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 16 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...