Tube and Pipe Production Articles

The tube and pipe production technology area encompasses mills and all of the equipment that makes a mill run successfully: tooling, welding units, nondestructive testers, bundlers, scarfing equipment, straighteners, scrap choppers, and washing systems.

Filter Content
weld-seam normalizing

Heat-treating line pipe weld seams

October 10, 2011

As the use of thick-walled pipe for API applications grows, so does the need to verify that it has been correctly normalized. Use of 2-D simulation verifies that the temperatures and heating pattern needed to obtain the desired strength and toughness have been achieved.

Continue Reading

HPTR's past, present, and future—Part II -

HPTR's past, present, and future—Part II

July 11, 2011

By: , , ,

Editor's Note: This article is the second of a two-part series. Part I examined the development, design, and functions of the high-precision tube roller (HPTR). Part II discusses the HPTR’s current role and modern applications. At its creation, the high-precision tube rolling (HPTR) mill was...

Continue Reading

HPTR titanium tube

HPTR’s past, present, and future — Part I

June 18, 2011

By: , , ,

Initially developed in the 1950s for manufacturing tubing with ultrathin walls for nuclear fuel cladding, the high-precision tube roller (HPTR) continues to provide a fast, economical way to achieve extreme reductions in diameter and wall thickness.

Continue Reading

Dust collection system

Designing a dust collection system for weld seam remetallizing

February 25, 2011


OHSA seems to be taking an increased interest in worker safety and, according to OMB Watch, has been citing an increasing number of workplace violations. Tube and pipe producers who remetallize their product pay particular attention to OSHA Directive Number CPL 03-00-008, which deals with a hazard specific to remetallizing operations: explosive dust.

Continue Reading

Changing the point of attack -

Changing the point of attack

December 8, 2010


For inline cutoff, tube and pipe producers typically use a mechanically driven, single-blade device. This type of cutoff unit is good for most applications, but in many specialized cases, it might not produce good results. Square or rectangular tubes, heavy walls, and lockseam tubing present cutoff challenges that call for a hydraulic unit or a swing blade.

Continue Reading

Cold drawing principles - TheFabricator

Cold drawing principles

June 8, 2010


Understanding that drawing a tube requires more than just pointing and drawing is a good start to a successful draw. Procuring the raw material, pointing, drawing, straightening, and finishing are the five steps fabricators need to keep in mind.

Continue Reading

notching options hole saw

Notching options

April 26, 2010


While most fabricators could probably name three methods for notching tube, they actually have six choices. Understanding the advantages and disadvantages of each is the first step in selecting one.

Continue Reading

flying cutoff saw blades

Choices in flying cutoff saw blades

December 2, 2009


Friction saws are the conventional cutoff machines for tube and pipe mills. Drawbacks include hazards (noise and risk of breakage) and burrs they tend to generate. Tungsten-carbide-tipped (TCT) blades, which require more sophisticated sawing machines, run slower and safer, cut cleaner, and are less prone to breakage.

Continue Reading

laser based inspection welding

Laser-based inspection for laser welding

October 20, 2009

New developments in laser-based inspection systems offer tube and pipe mills real-time inspection of laser-welded seams. These systems can help to shorten setup time, improve weld quality, and reduce scrap.

Continue Reading

rotary straighteners tube pipe

Rotary straighteners for tube and pipe

September 25, 2009

Although six-roll straightening machines were the industry standard for decades, 10-roll machines provide twice as many bending moments and therefore turn out straighter, rounder tube.

Continue Reading

tube mill coolant

Shopping for a new tube mill coolant?

September 2, 2009

Many mill coolants are available today. Understanding the factors that drive selection and management of these fluids can help to minimize the costs of their use in welded tube production.

Continue Reading

improve weld seams.jpg

Looking to improve weld seams?

September 1, 2009


Most tube and pipe producers weld the seam as it is—without additives or fillers—and risk the problems associated with oxidation. A specially formulated brazing flux, in liquid or paste form, dissolves and removes oxides, prevents re-oxidation, and helps transfer weld heat to the seam.

Continue Reading

Troubleshooting OCTG threading: Part I

August 5, 2009


High production threading of tube and pipe for use by the petroleum industry is accomplished using either mechanically actuated or digitally controlled, carbide tooled machines. The most effective way to deal with residual stress is to full body anneal each tube prior to machining; however, this may not be economically possible. One alternative is to limit the amount of energy that the tube is subjected to during machining. An examination of the cutting tools that are used to produce threaded product will reveal how the shape of the insert may affect the deformation of the tube.

Continue Reading

Tube cutoff system

Flexibility with smart flying shear upgrades

April 14, 2009


Production flexibility can enable a tube and pipe producer to expand its offerings and customer base and increase its chances of survival in a down economy. One way to achieve this flexibility is to upgrade the operation's flying shear component.

Continue Reading

Roll Former

Selecting speed reducers for roll forming lines

November 11, 2008


Setting up a roll forming line requires careful consideration of the speed reducers to be installed at each forming station. After determining the horsepower for each station, it is necessary to determine the appropriate durability, thermal horsepower rating, and strength for each speed reducer.

Continue Reading