Advantages of

OurAs-Welded

Mechanical

Tubing:

Tubular Products manufactures

as-welded mechanical tubing to

ASTM specification A513 using the

Electric Resistance Welding (ERW)

process. This process produces the

highest weld strength possible. Our

as-welded mechanical product also

offers a number of other advantages:

• Close dimensional tolerances, which

may permit less stock removal

and often eliminate machining

operations

• Excellent concentricity, because

of the uniform wall thickness of the

high quality, flat-rolled steel from

which it is made

• A smooth surface that can be

readily plated, painted or enameled

• Ease in bending, machining,

beading, expanding, swaging,

spinning, flanging, upsetting,

grooving, rolling, fluting,

flattening, tapering and

hydroforming

• An inside surface with the same

surface quality as the outside, and

which can be readily inspected

during forming.

As-Welded Mechanical

Steel Tubing

Material handling equipment

• Industrial machinery

Tubular Products’ as-welded

mechanical tubing may also be purchased—

in less than mill production

quantities—from leading steel service

centers throughout North America and

abroad.

Round as-welded mechanical tubing is

manufactured in a wide range of diameters

from 0.469" to 12.500" and wall

thicknesses from 0.035" to 0.685".

This product is also manufactured in

squares from 1/2" to 3" and in rectangles

from 1/2" x 7/8" to 2" x 3". Wall

thicknesses in both shapes range from

.035" to .195".

We also produce a number of special

shapes including equilateral triangles,

hexagons, octagons, quarter- and

half-rounds, flat and eliptical ovals,

oval-ended rectangles and D-shapes.

Our as-welded mechanical tubing is

produced in a number of AISI grades

including 1008, 1010, 1015 and 1020

and in HSLA (high-strength, low-alloy)

grades.

A hot-rolled finish is provided when

surface requirements are not critical.

Two grades of cold-rolled finish can be

specified—15 RMS or 20/35 RMS—

depending upon the type of painting

or plating required.

The appropriate surface finish is

determined by the end use application.

Hot-rolled finishes can be provided

in hot-rolled black; shot blasted hotrolled

black; or hot-rolled, pickled and

oiled. Cold-rolled finishes typically

offered range from 50 RMS to

20 RMS.

Advantages of Tubular Products Seamless Mechanical Tubing:

Both cold-drawn and hot-finished

Tubular Products seamless tubing

are appropriate for a wide range of

applications, due to the broad range

of chemistries in which they're

available. Each offers a number

of distinct advantages:

Cold-Drawn Seamless Tubing • Colddrawn

tubing inherently possesses a

high strength-to-weight ratio and can

be processed to provide a combination

of desired characteristics: dimensional

accuracy, good surface quality, excellent

micro-structure uniformity, good

machinability and high tensile properties.

It is also suited for such post-treatments

as carburizing and heat treating.

Hot-Finished Seamless Tubing • This

type of tubing is normally used in

applications where precise dimensions

and surface quality are secondary considerations,

or where finish and final

mechanical qualities can be obtained

through machining and heat treatment.

Tubular Products’ seamless mechanical

tubing is employed in a variety

of uses, particularly when heavy wall

thicknesses, specific steel alloys or

both are required.

Specific applications include

bushings, spacers, bearings and other

mechanical parts in automobiles,

trucks, aircraft and construction,

agricultural and drilling equipment,

as well as hydraulic cylinders.

Markets served include transportation

(autos, trucks, buses, trains and

aircraft), construction equipment,

agricultural equipment and oil

and gas production equipment.

Tubular Products tubing may also

be purchased – in less than mill

production quantities – from leading

steel service centers throughout North

America and abroad.

Building Quality

Into Tubular

Products’

Seamless Tubing

The seamless mechanical tubing

facilities at Tubular Products’ Shelby

plant are certified as meeting both

ISO 9002 and auto industry TS:16949

quality standards.

A major contributor to this quality

performance is our use of Statistical

Process Control (SPC). Our short-run

SPC methodology has been accepted

by the federal government and was

instrumental in achieving QS-9000

certification.

Short-run SPC has been adapted, for

example, to control sizing in cold drawing.

Target values transform dimensional

data so that a single continuous

control chart can be utilized at each

drawing bench. A multitude of sizes

in our "job shop" environment are

controlled by the same SPC chart.

Extensive laboratory testing of pierced

billets and tube samples further assures

quality. These include metallographic

examinations and tests for such properties

as yield strength, ultimate tensile

strength, percent of elongation, and

hardness.