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 are available in these standard lengths.

The tolerances specified for the outer diameter of the round construction tubes comply with the requirements for split one-piece connector clamps. Two-piece connector clamps allow larger tube tolerances.

The tube complies with DIN 2391, DIN 2395 and DIN 2462.

Specification

Tube
Stainless steel AISI 304NI
Plain finishBL, untreated

Sawed cross section
blank, i.e. not surface treated

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	s₁ Square	Length l ±0.02	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	s₁ Square	Length l ±0.02	d₂	s₂	w₁	w₂

D 10 ±0.004	-	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	-	0.16	-

d₁
Round

s₁
Square

Length l ±0.02

d₂

s₂

w₁

w₂

D 10 ±0.004

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

0.16

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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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