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

Standard Sheet GN 990 Print This Page 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

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

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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Part Number

Total (net)

Can$15.80

Available within 1-2 weeks

Quantity

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Please note our quantity discounts (Canadian Dollars).

Min	Max	Price
1	249	Can$15.80
250	499	Can$14.48
500	999	Can$13.17
≥ 1000		Can$11.85

Prop 65: Compliant

www.P65Warnings.ca.gov

RoHS: Compliant

This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).

Weight: 0.139 lbs

If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 1-800-397-6993