an outer casing formed from a steel tube

It's essentially is a long thin pipe of carbon.

A single walled carbon nanotube is essentially an atom thick tube of carbon.

In the first case, the Bourdon tube must be made of stainless steel,

The serial version made in Stuttgart had a steel body welded to the central tube platform chassis instead of the aluminium body used in the small Gmünd made series.

The undersea pipeline is made of steel embedded in concrete, in order to protect it from ships' anchors.

(bt) Seamless steel tube as specified in ISO 65 1981 Heavy Series, with nominal dimensions DN 100 (4'')

Flat rolled products of stainless steel, of a width of  600 mm, not further worked than hot rolled, not in coils, of a thickness of  3 mm

And I had snuck in this article on these things called carbon nanotubes, and that's just a long, thin pipe of carbon that's an atom thick, and one 50,000th the diameter of your hair.

The products concerned by the competition Decision are seamless carbon steel pipes and tubes, in particular those used by the oil and gas industry.

tube (laminate) tube (laminate) tube (laminate) tube (laminate) tube (laminate) tube (laminate)

1 tube 1 tube 1 tube 1 tube 1 tube 1 tube

Then connect the plastic tube to the Elbow Fitting.

Tube (HDPE) Tube (HDPE) Tube (HDPE)

1 tube 1 tube 1 tube

Cutaneous use Sachet (alu) Cutaneous use Tube (alu) Cutaneous use Tube (alu) Cutaneous use Tube (alu)

12 sachets 1 tube 1 tube 1 tube

Of a kind used for persons, in motor vehicles

Milling machines, knee type

For working flat products

Tube (laminate)

1 tube

Tube (laminate) Tube (laminate)

1 tube 1 tube

Other screws and bolts, whether or not with their nuts or washers

Forged or stamped, but not further worked

Of a width not exceeding 16 mm and of a length exceeding 14 m

Herbicides, anti sprouting products and plant growth regulators with one of the following active ingredients atrazin alachlor 2 methyl 4 chlorophenoxyacetic acid or its derivatives 2,4 dichlorophenoxyacetic acid or its derivatives trifluralin, in aerosol containers

These graceful mollusks were swimming backward by means of their locomotive tubes, sucking water into these tubes and then expelling it.

We have a carbon fiber safety cage that protects the occupants for less than 10 percent of the weight of a traditional steel chassis in a car.

All steel!

Yeah, steeljacketed.

Bottlecrate bottlerack

Intermediate bulk container, woven plastic, coated and liner

Box, steel

Case, steel

Drum, steel

Envelope, steel

Jerrican, steel

Consisting of two panels of glass sealed around the edges by an airtight joint and separated by a layer of air, other gases or a vacuum

Bulldozer or angledozer blades

Of coloured glass

Combine harvester threshers

Directoraat generaal Wonen, Wijken en Integratie (Directorate General for Housing, Communities and Integration)

but that's for the pollen tube to come out later on. A very tiny tube.