Tube adapter ⌀ 16–12 mm (Length: 30 mm) 📦#1513

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Straight sleeve ⌀16 mm to ⌀12 mm in STL format. Length of this fitting is 30 mm. The thickness of the tubes is identical: 2 mm. The ends feature a fillet to facilitate the connection of the two tubes.
Generation date: 2025-09-02
3D Model Tube adapter ⌀ 16–12 mm (Length: 30 mm)

3D model download

Free
  • inline-tube-adapter-lenA10mm-d_model1513-nb0_dd{id}.stl : 7 Mo
STL Mesh quality : Linear deflection 0.05 Angular deflection 0.05
(attribution - commercial use allowed)

Values for this model

This model was generated by the Inline tube adapter template, with the following values:
Parameter Value
#1 side A length 10 mm
#2 side A outer diameter 16 mm
#3 side A thickness 2 mm
#4 side B length 15 mm
#5 side B outer diameter 12 mm
#6 side B thickness 2 mm
#7 transition length 5 mm
#8 axis offset 0 mm
#9 ends fillet fillet on both inside
and outside
illustration of the parameters
Representation of the parameters

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 ⌀ 16–12 mm (Length: 35 mm) (📦 #1097)

1 object(s) - format STL
Inline fitting ⌀16 mm to ⌀12 mm in STL format. Final length of this fitting is 35 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length15mm
side A outer diameter16mm
side A thickness2mm
side B length15mm
side B outer diameter12mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 50–40 mm (Length: 50 mm) (📦 #1124)

1 object(s) - format STL
Straight tube coupler ⌀50 mm to ⌀40 mm in STL format. Length of this reducer is 50 mm. The thickness of the tubes is identical: 2 mm. The ends have a fillet.
Parameter Value Unit
side A length20mm
side A outer diameter50mm
side A thickness2mm
side B length20mm
side B outer diameter40mm
side B thickness2mm
transition length10mm
axis offset0mm
ends fillet3

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

1 object(s) - format STL
Tube reducer ⌀25 mm to ⌀20 mm in STL format. Length of this reducer is 45 mm. The thickness of the tubes is identical: 3 mm. The ends are rounded on the inside to make tube connection easier.
Parameter Value Unit
side A length15mm
side A outer diameter25mm
side A thickness3mm
side B length15mm
side B outer diameter20mm
side B thickness3mm
transition length15mm
axis offset0mm
ends fillet2

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

1 object(s) - format STL
Tube reducer ⌀51 mm to ⌀35 mm in STL format. Final length of this adapter is 80 mm. The thickness of the tubes is identical: 3 mm. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length30mm
side A outer diameter51mm
side A thickness3mm
side B length30mm
side B outer diameter35mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 50–40 mm (Length: 100 mm) (📦 #1125)

1 object(s) - format STL (4.0/5) 1 vote(s)
Diameter adapter ⌀50 mm to ⌀40 mm in STL format. Final length of this fitting is 100 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded to facilitate the connection of the two tubes.
Parameter Value Unit
side A length40mm
side A outer diameter50mm
side A thickness2mm
side B length40mm
side B outer diameter40mm
side B thickness2mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 76–50 mm (Length: 60 mm) (📦 #1358)

1 object(s) - format STL (5.0/5) 1 vote(s)
Straight tube fitting ⌀76 mm to ⌀50 mm in STL format. Final length of this adapter is 60 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length20mm
side A outer diameter76mm
side A thickness2mm
side B length20mm
side B outer diameter50mm
side B thickness2mm
transition length20mm
axis offset0mm
ends fillet2

Tube adapter ⌀ 78–50 mm (Length: 60 mm) (📦 #1360)

1 object(s) - format STL
Tube reducer ⌀78 mm to ⌀50 mm in STL format. Total length of this sleeve is 60 mm. The thickness of the tubes is identical: 2 mm. The axes of the tubes are off-center. The ends are rounded on the inside to make tube connection easier.
Parameter Value Unit
side A length20mm
side A outer diameter78mm
side A thickness2mm
side B length20mm
side B outer diameter50mm
side B thickness2mm
transition length20mm
axis offset1mm
ends fillet2

Tube adapter ⌀ 80–50 mm (Length: 60 mm) (📦 #1359)

1 object(s) - format STL
Tube adapter ⌀80 mm to ⌀50 mm in STL format. Final length of this fitting is 60 mm. The thickness of the tubes is identical: 2 mm. The axes of the tubes are off-center. The ends feature an internal fillet.
Parameter Value Unit
side A length20mm
side A outer diameter80mm
side A thickness2mm
side B length20mm
side B outer diameter50mm
side B thickness2mm
transition length20mm
axis offset1mm
ends fillet2

Tube adapter ⌀ 20–5 mm (Length: 65 mm) (📦 #1261)

1 object(s) - format STL (5.0/5) 1 vote(s)
Inline tube junction ⌀20 mm to ⌀5 mm in STL format. Total length of this coupler is 65 mm. The thickness of the tubes is identical: 2 mm. The ends feature an external fillet to ease the connection.
Parameter Value Unit
side A length30mm
side A outer diameter20mm
side A thickness2mm
side B length30mm
side B outer diameter5mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 80–35 mm (Length: 90 mm) (📦 #1764)

1 object(s) - format STL
Inline fitting ⌀80 mm to ⌀35 mm in STL format. Length of this junction is 90 mm. The thickness of the tubes is identical: 3 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length40mm
side A outer diameter80mm
side A thickness3mm
side B length30mm
side B outer diameter35mm
side B thickness3mm
transition length20mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 78–50 mm (Length: 80 mm) (📦 #1361)

1 object(s) - format STL
Straight tube fitting ⌀78 mm to ⌀50 mm in STL format. Final length of this connector is 80 mm. The thickness of the tubes is identical: 2 mm. The axes of the tubes are off-center. The ends have a fillet on the inside to ease the connection.
Parameter Value Unit
side A length40mm
side A outer diameter78mm
side A thickness2mm
side B length20mm
side B outer diameter50mm
side B thickness2mm
transition length20mm
axis offset1mm
ends fillet2

Tube adapter ⌀ 38–10 mm (Length: 90 mm) (📦 #1269)

1 object(s) - format STL
Tube connector ⌀38 mm to ⌀10 mm in STL format. Final length of this fitting is 90 mm. The thickness of the larger diameter tube is 2.5 mm, and the smaller one is 2 mm. The ends are rounded on the outside.
Parameter Value Unit
side A length30mm
side A outer diameter38mm
side A thickness2.5mm
side B length30mm
side B outer diameter10mm
side B thickness2mm
transition length30mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 100–50 mm (Length: 100 mm) (📦 #1470)

1 object(s) - format STL
Straight tube coupler ⌀100 mm to ⌀50 mm in STL format. Length of this adapter is 100 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded to facilitate the connection of the two tubes.
Parameter Value Unit
side A length30mm
side A outer diameter100mm
side A thickness2mm
side B length30mm
side B outer diameter50mm
side B thickness2mm
transition length40mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 100–50 mm (Length: 90 mm) (📦 #1454)

1 object(s) - format STL
Diameter adapter ⌀100 mm to ⌀50 mm in STL format. Final length of this sleeve is 90 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded on the inside to ease the connection.
Parameter Value Unit
side A length30mm
side A outer diameter100mm
side A thickness2mm
side B length30mm
side B outer diameter50mm
side B thickness2mm
transition length30mm
axis offset0mm
ends fillet2

Tube adapter ⌀ 100–50 mm (Length: 100 mm) (📦 #1451)

1 object(s) - format STL
Tube connector ⌀100 mm to ⌀50 mm in STL format. Total length of this adapter is 100 mm. The thickness of the tubes is identical: 2 mm. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length30mm
side A outer diameter100mm
side A thickness2mm
side B length30mm
side B outer diameter50mm
side B thickness2mm
transition length40mm
axis offset0mm
ends fillet2

Tube adapter ⌀ 66–41 mm (Length: 90 mm) (📦 #1793)

1 object(s) - format STL
Inline tube reducer ⌀66 mm to ⌀41 mm in STL format. Final length of this coupler is 90 mm. The thickness of the tubes is identical: 2 mm. The ends feature an external fillet to ease the connection.
Parameter Value Unit
side A length40mm
side A outer diameter66mm
side A thickness2mm
side B length45mm
side B outer diameter41mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 100–53 mm (Length: 100 mm) (📦 #1600)

1 object(s) - format STL
Inline tube junction ⌀100 mm to ⌀53 mm in STL format. Length of this connector is 100 mm. The thickness of the tubes is identical: 2 mm. The ends are rounded on the inside to make tube connection easier.
Parameter Value Unit
side A length30mm
side A outer diameter100mm
side A thickness2mm
side B length30mm
side B outer diameter53mm
side B thickness2mm
transition length40mm
axis offset0mm
ends fillet2

Tube adapter ⌀ 70–69 mm (Length: 50 mm) (📦 #1394)

1 object(s) - format STL
Tube adapter ⌀70 mm to ⌀69 mm in STL format. Total length of this adapter is 50 mm. The thickness of the tubes is identical: 2 mm. The ends have a fillet on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length20mm
side A outer diameter70mm
side A thickness2mm
side B length20mm
side B outer diameter69mm
side B thickness2mm
transition length10mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 60–40 mm (Length: 85 mm) (📦 #1123)

1 object(s) - format STL
Straight sleeve ⌀60 mm to ⌀40 mm in STL format. Total length of this reducer is 85 mm. The thickness of the tubes is identical: 3 mm. The axes of the tubes are offset. The ends feature an external fillet to make tube connection easier.
Parameter Value Unit
side A length40mm
side A outer diameter60mm
side A thickness3mm
side B length40mm
side B outer diameter40mm
side B thickness3mm
transition length5mm
axis offset1mm
ends fillet1

Tube adapter ⌀ 16–10 mm (Length: 15 mm) (📦 #1466)

1 object(s) - format STL
Tube connector ⌀16 mm to ⌀10 mm in STL format. Final length of this junction is 15 mm. The thickness of the tubes is identical: 2 mm. The ends are raw.
Parameter Value Unit
side A length5mm
side A outer diameter16mm
side A thickness2mm
side B length5mm
side B outer diameter10mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 7–5.5 mm (Length: 15 mm) (📦 #1104)

1 object(s) - format STL (3.8/5) 5 vote(s)
Tube adapter ⌀7 mm to ⌀5.5 mm in STL format. Final length of this junction is 15 mm. The thickness of the tubes is identical: 2 mm. The ends are raw.
Parameter Value Unit
side A length5mm
side A outer diameter7mm
side A thickness2mm
side B length5mm
side B outer diameter5.5mm
side B thickness2mm
transition length5mm
axis offset0.6mm
ends fillet0

Tube adapter ⌀ 81–55 mm (Length: 80 mm) (📦 #1440)

1 object(s) - format STL
Diameter adapter ⌀81 mm to ⌀55 mm in STL format. Final length of this adapter is 80 mm. The thickness of the tubes is identical: 2.5 mm. The ends feature an external fillet.
Parameter Value Unit
side A length25mm
side A outer diameter81mm
side A thickness2.5mm
side B length25mm
side B outer diameter55mm
side B thickness2.5mm
transition length30mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 32–25 mm (Length: 25 mm) (📦 #1103)

1 object(s) - format STL (5.0/5) 1 vote(s)
Inline tube reducer ⌀32 mm to ⌀25 mm in STL format. Final length of this reducer is 25 mm. The thickness of the tubes is identical: 2 mm. The ends are not rounded.
Parameter Value Unit
side A length10mm
side A outer diameter32mm
side A thickness2mm
side B length10mm
side B outer diameter25mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 50–40 mm (Length: 45 mm ) (📦 #1094)

1 object(s) - format STL (5.0/5) 3 vote(s)
Inline tube junction ⌀50 to ⌀40 mm in STL format. Length of this connector is 45 mm. The thickness of the larger diameter tube is 4 mm, and the smaller one is 3 mm. The ends have a fillet on the outside to make tube connection easier.
Parameter Value Unit
side A length20mm
side A outer diameter50mm
side A thickness4mm
side B length20mm
side B outer diameter40mm
side B thickness3mm
transition length5mm
axis offset0mm
ends fillet1

Tube adapter ⌀ 30–26 mm (Length: 50 mm) (📦 #1109)

1 object(s) - format STL (3.5/5) 2 vote(s)
Inline tube adapter ⌀30 mm to ⌀26 mm in STL format. Final length of this reducer is 50 mm. The thickness of the tubes is identical: 2 mm. The ends have no fillet.
Parameter Value Unit
side A length15mm
side A outer diameter30mm
side A thickness2mm
side B length30mm
side B outer diameter26mm
side B thickness2mm
transition length5mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 96–80 mm (Length: 100 mm) (📦 #1529)

1 object(s) - format STL
Straight tube fitting ⌀96 mm to ⌀80 mm in STL format. Final length of this reducer is 100 mm. The thickness of the tubes is identical: 2 mm. The ends feature a fillet.
Parameter Value Unit
side A length30mm
side A outer diameter96mm
side A thickness2mm
side B length30mm
side B outer diameter80mm
side B thickness2mm
transition length40mm
axis offset0mm
ends fillet3

Tube adapter ⌀ 33–26 mm (Length: 50 mm) (📦 #1526)

1 object(s) - format STL
Straight tube adapter ⌀33 mm to ⌀26 mm in STL format. Final length of this junction is 50 mm. The thickness of the larger diameter tube is 2.8 mm, and the smaller one is 2 mm. The ends have no fillet.
Parameter Value Unit
side A length15mm
side A outer diameter33mm
side A thickness2.8mm
side B length20mm
side B outer diameter26mm
side B thickness2mm
transition length15mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 33–18 mm (Length: 50 mm) (📦 #1525)

1 object(s) - format STL
Tube reducer ⌀33 mm to ⌀18 mm in STL format. Total length of this fitting is 50 mm. The thickness of the larger diameter tube is 2.9 mm, and the smaller one is 2 mm. The ends have no fillet.
Parameter Value Unit
side A length15mm
side A outer diameter33mm
side A thickness2.9mm
side B length20mm
side B outer diameter18mm
side B thickness2mm
transition length15mm
axis offset0mm
ends fillet0

Tube adapter ⌀ 100–50 mm (Length: 140 mm) (📦 #1450)

1 object(s) - format STL
Inline tube adapter ⌀100 mm to ⌀50 mm in STL format. Total length of this sleeve is 140 mm. The thickness of the tubes is identical: 2 mm. The ends feature a fillet.
Parameter Value Unit
side A length40mm
side A outer diameter100mm
side A thickness2mm
side B length40mm
side B outer diameter50mm
side B thickness2mm
transition length60mm
axis offset0mm
ends fillet3