GN 990 Construction tubes Steel / Aluminium, for tube clamp connectors


Product description


Construction tubes GN 990 can be supplied in any length up to 3000 mm.

The tolerances specified for the outside diameter of the round construction tubes comply with the requirements for split mono-block connector clamps. Otherwise the tolerances comply with DIN 2391, DIN 2395 and DIN 2462.

Two-piece connector clamps allow larger tolerances on construction tubes.


zinc plated, blue passivatedZB

  • blankBL
  • anodized, natural colorEL

Sawed cross sections deburred blank, i.e. not surface treated.

RoHS compliant

Technical drawing

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GN 990 Construction tubes, Steel / Aluminium sketch

Article options / Table

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Diameter D

Square V

Length l ±0,5 mmd2s2w1w2
D 10 ±0.1D 10 ±0.1-V 10*771,51,5
D 12 ±0.1D 12 ±0.1-V 12*991,51,5
D 14 ±0.1D 14 ±0.1--*11-1,5-
D 15 ±0.1D 15 ±0.1--*12-1,5-
D 16 ±0.1D 16 ±0.1-V 16*13131,51,5
D 18 ±0.1D 18 ±0.1--*15-1,5-
D 20 ±0.1D 20 ±0.1V 20V 20*161622
D 25 ±0.1D 25 ±0.1V 25V 25*212122
D 30 ±0.1D 30 ±0.1V 30V 30*262622
D 32 ±0.15D 32 ±0.15--*28-2-
D 35 ±0.15D 35 ±0.15V 35V 35*31-2-
D 40 ±0.15D 40 ±0.15V 40V 40*343433
D 42 ±0.2---*36-3-
D 45 ±0.2D 45 ±0.2V 45V 45*393933
D 48 ±0.2D 48 ±0.2--*42-3-
D 50 ±0.2D 50 ±0.2V 50V 50*444433
D 55 ±0.25---*47-4-
D 60 ±0.25D 60 ±0.2--*52-4-
* available in all lengths from 50 to 3000 mm (in 1 mm steps)

Build & Price



Diameter d1 (Steel)
Diameter d1 (Aluminum)
Square s1 (Steel)
Square s1 (Aluminum)
Length l
Please insert desired Length l
(50 - 3000)

Selected Part (How to order)

Weight: 0,031 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS compliant: Yes
This article conforms to RoHS, which means it complies with EU Directive 2011/65/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)).
Please note our quantity discounts.
With a total value (net) per order:
from 150 Euro -> 10 % discount
from 250 Euro -> 20 % discount
from 350 Euro -> 30 % discount
All prices in accordance with our price list No. 51, valid from 1 February 2018, plus VAT only valid for Germany.

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