Construction Tubes GN 990

d₁ / s₁: D - Diameter

Product Family Stainless Steel

Standard parts made of rustproof stainless steel have been designed for use in the food sector, in the chemical industry, for aggressive ambient conditions or for outdoor use.

corrosion-resistant
precise fit
environmentally friendly

Show all Stainless Steel products

Stainless Steel Characteristics

Product description

Construction tubes GN 990 can be used in combination with appropriate flanged, two-way or T-angle connector clamps to build modular and variable frames or racks.

Compared to typical DIN round tubes, the outer diameters have tighter tolerances for an optimal non-positive connection with the connector clamps. The wall thickness and internal dimensions have wider tolerances.

Stainless steel versions may have a slightly raised weld seam on the inside.

Specification

Stainless steel AISI 304NI
Plain finishBL

RoHS

Accessory

EN 991 Tube End Plugs
EN 448 Threaded Tube Ends (Round Type)
EN 448 Threaded Tube Ends (Square Type)
EN 458 Threaded Tube Ends
GN 992 Threaded Tube Ends
GN 992.5 Threaded Tube Ends

On request

Other lengths
Inch size tubes

Part Number	d₁ Round D	s₁ Square	Length l ±0.5	d₂	s₂	w₁	w₂

990-NI-D10-200-BL	D 10 ±0.004	-	7.87 ±0.02	0.28	0.28	0.06	0.06
990-NI-D10-500-BL	D 10 ±0.004	-	19.69 ±0.02	0.28	0.28	0.06	0.06
990-NI-D10-1000-BL	D 10 ±0.004	-	39.37 ±0.02	0.28	0.28	0.06	0.06
990-NI-D12-200-BL	D 12 -0.008	-	7.87 ±0.02	0.35	0.35	0.06	0.06
990-NI-D12-500-BL	D 12 -0.008	-	19.69 ±0.02	0.35	0.35	0.06	0.06
990-NI-D12-1000-BL	D 12 -0.008	-	39.37 ±0.02	0.35	0.35	0.06	0.06
990-NI-D14-200-BL	D 14 -0.008	-	7.87 ±0.02	0.43	-	0.06	-
990-NI-D14-500-BL	D 14 -0.008	-	19.69 ±0.02	0.43	-	0.06	-
990-NI-D14-1000-BL	D 14 -0.008	-	39.37 ±0.02	0.43	-	0.06	-
990-NI-D15-200-BL	D 15 -0.008	-	7.87 ±0.02	0.47	-	0.06	-
990-NI-D15-500-BL	D 15 -0.008	-	19.69 ±0.02	0.47	-	0.06	-
990-NI-D15-1000-BL	D 15 -0.008	-	39.37 ±0.02	0.47	-	0.06	-
990-NI-D16-200-BL	D 16 -0.008	-	7.87 ±0.02	0.51	0.51	0.06	0.06
990-NI-D16-500-BL	D 16 -0.008	-	19.69 ±0.02	0.51	0.51	0.06	0.06
990-NI-D16-1000-BL	D 16 -0.008	-	39.37 ±0.02	0.51	0.51	0.06	0.06
990-NI-D18-200-BL	D 18 -0.008	-	7.87 ±0.02	0.59	-	0.06	-
990-NI-D18-500-BL	D 18 -0.008	-	19.69 ±0.02	0.59	-	0.06	-
990-NI-D18-1000-BL	D 18 -0.008	-	39.37 ±0.02	0.59	-	0.06	-
990-NI-V20-200-BL	-	V 20	7.87 ±0.02	0.63	0.63	0.08	0.08
990-NI-D20-200-BL	D 20 -0.008	-	7.87 ±0.02	0.63	0.63	0.08	0.08
990-NI-V20-500-BL	-	V 20	19.69 ±0.02	0.63	0.63	0.08	0.08
990-NI-D20-500-BL	D 20 -0.008	-	19.69 ±0.02	0.63	0.63	0.08	0.08
990-NI-V20-1000-BL	-	V 20	39.37 ±0.02	0.63	0.63	0.08	0.08
990-NI-D20-1000-BL	D 20 -0.008	-	39.37 ±0.02	0.63	0.63	0.08	0.08
990-NI-V20-2000-BL	-	V 20	78.74 ±0.02	0.63	0.63	0.08	0.08
990-NI-D20-2000-BL	D 20 -0.008	-	78.74 ±0.02	0.63	0.63	0.08	0.08
990-NI-V25-200-BL	-	V 25	7.87 ±0.02	0.83	0.83	0.08	0.08
990-NI-D25-200-BL	D 25 ±0.006	-	7.87 ±0.02	0.83	0.83	0.08	0.08
990-NI-V25-500-BL	-	V 25	19.69 ±0.02	0.83	0.83	0.08	0.08
990-NI-D25-500-BL	D 25 ±0.006	-	19.69 ±0.02	0.83	0.83	0.08	0.08
990-NI-V25-1000-BL	-	V 25	39.37 ±0.02	0.83	0.83	0.08	0.08
990-NI-D25-1000-BL	D 25 ±0.006	-	39.37 ±0.02	0.83	0.83	0.08	0.08
990-NI-V25-2000-BL	-	V 25	78.74 ±0.02	0.83	0.83	0.08	0.08
990-NI-D25-2000-BL	D 25 ±0.006	-	78.74 ±0.02	0.83	0.83	0.08	0.08
990-NI-V30-200-BL	-	V 30	7.87 ±0.02	1.02	1.02	0.08	0.08
990-NI-D30-200-BL	D 30 ±0.006	-	7.87 ±0.02	1.02	1.02	0.08	0.08
990-NI-V30-500-BL	-	V 30	19.69 ±0.02	1.02	1.02	0.08	0.08
990-NI-D30-500-BL	D 30 ±0.006	-	19.69 ±0.02	1.02	1.02	0.08	0.08
990-NI-V30-1000-BL	-	V 30	39.37 ±0.02	1.02	1.02	0.08	0.08
990-NI-D30-1000-BL	D 30 ±0.006	-	39.37 ±0.02	1.02	1.02	0.08	0.08
990-NI-V30-2000-BL	-	V 30	78.74 ±0.02	1.02	1.02	0.08	0.08
990-NI-D30-2000-BL	D 30 ±0.006	-	78.74 ±0.02	1.02	1.02	0.08	0.08
990-NI-D35-200-BL	D 35 ±0.006	-	7.87 ±0.02	1.22	-	0.08	-
990-NI-D35-500-BL	D 35 ±0.006	-	19.69 ±0.02	1.22	-	0.08	-
990-NI-D35-1000-BL	D 35 ±0.006	-	39.37 ±0.02	1.22	-	0.08	-
990-NI-D40-200-BL	D 40 +0.006/-0.008	-	7.87 ±0.02*	1.34	1.34	0.12	0.12
990-NI-V40-500-BL	-	V 40	19.69 ±0.02	1.34	1.34	0.12	0.12
990-NI-D40-500-BL	D 40 +0.006/-0.008	-	19.69 ±0.02	1.34	1.34	0.12	0.12
990-NI-V40-1000-BL	-	V 40	39.37 ±0.02	1.34	1.34	0.12	0.12
990-NI-D40-1000-BL	D 40 +0.006/-0.008	-	39.37 ±0.02	1.34	1.34	0.12	0.12
990-NI-V40-2000-BL	-	V 40	78.74 ±0.02	1.34	1.34	0.12	0.12
990-NI-D40-2000-BL	D 40 +0.006/-0.008	-	78.74 ±0.02	1.34	1.34	0.12	0.12
990-NI-V50-500-BL	-	V 50	19.69 ±0.02	1.73	1.73	0.12	0.12
990-NI-D50-500-BL	D 50 ±0.008	-	19.69 ±0.02	1.73	1.73	0.12	0.12
990-NI-V50-1000-BL	-	V 50	39.37 ±0.02	1.73	1.73	0.12	0.12
990-NI-D50-1000-BL	D 50 ±0.008	-	39.37 ±0.02	1.73	1.73	0.12	0.12
990-NI-V50-2000-BL	-	V 50	78.74 ±0.02	1.73	1.73	0.12	0.12
990-NI-D50-2000-BL	D 50 ±0.008	-	78.74 ±0.02	1.73	1.73	0.12	0.12
990-NI-D60-500-BL	D 60 ±0.01	-	19.69 ±0.02	2.05	-	0.16	-
990-NI-D60-1000-BL	D 60 ±0.01	-	39.37 ±0.02	2.05	-	0.16	-
990-NI-D60-2000-BL	D 60 ±0.01	-	78.74 ±0.02	2.05	-	0.16	-

d₁ Round D	s₁ Square	Length l ±0.5	d₂	s₂	w₁	w₂

D 10 -0.008	-	7.87	19.69	39.37	-	0.28	0.28	0.06	0.06
D 12 -0.008	-	7.87	19.69	39.37	-	0.35	0.35	0.06	0.06
D 14 -0.008	-	7.87	19.69	39.37	-	0.43	-	0.06	-
D 15 -0.008	-	7.87	19.69	39.37	-	0.47	-	0.06	-
D 16 -0.008	-	7.87	19.69	39.37	-	0.51	0.51	0.06	0.06
D 18 -0.008	-	7.87	19.69	39.37	-	0.59	-	0.06	-
D 20 -0.008	V 20	7.87	19.69	39.37	78.74	0.63	0.63	0.08	0.08
D 25 ±0.006	V 25	7.87	19.69	39.37	78.74	0.83	0.83	0.08	0.08
D 30 ±0.006	V 30	7.87	19.69	39.37	78.74	1.02	1.02	0.08	0.08
D 35 ±0.006	-	7.87	19.69	39.37	-	1.22	-	0.08	-
D 40 +0.006/-0.008	V 40	7.87*	19.69	39.37	78.74	1.34	1.34	0.12	0.12
D 50 ±0.008	V 50	19.69	39.37	78.74	-	1.73	1.73	0.12	0.12
D 60 ±0.01	-	19.69	39.37	78.74	-	2.05	-	0.12	-

d₁
Round D

s₁
Square

Length l ±0.5

d₂

s₂

w₁

w₂

D 10 -0.008

7.87

19.69

39.37

0.28

0.06

D 12 -0.008

7.87

19.69

39.37

0.35

0.06

D 14 -0.008

7.87

19.69

39.37

0.43

0.06

D 15 -0.008

7.87

19.69

39.37

0.47

0.06

D 16 -0.008

7.87

19.69

39.37

0.51

0.06

D 18 -0.008

7.87

19.69

39.37

0.59

0.06

D 20 -0.008

V 20

7.87

19.69

39.37

78.74

0.63

0.08

D 25 ±0.006

V 25

7.87

19.69

39.37

78.74

0.83

0.08

D 30 ±0.006

V 30

7.87

19.69

39.37

78.74

1.02

0.08

D 35 ±0.006

7.87

19.69

39.37

1.22

0.08

D 40 +0.006/-0.008

V 40

7.87*

19.69

39.37

78.74

1.34

0.12

D 50 ±0.008

V 50

19.69

39.37

78.74

1.73

0.12

D 60 ±0.01

19.69

39.37

78.74

2.05

0.12

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GN 990 Construction Tubes Stainless Steel, Round or Square, for Connector Clamps

Product Family Stainless Steel

Product description

Specification

Accessory

On request

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