Quick Summary
- Tube laser capacity depends on the machine, so published size limits differ from shop to shop.
- Blueline states its LT7 tube lasers (4kW) run 6 inch square and 6 inch round tube fully automatically.
- Blueline also states it processes profiles up to 13 inches in diameter with 5-axis beveling capability.
- Always send size, wall thickness, length, material and quantity so the shop can confirm your tube fits.
The short answer: it depends on the machine and the shop. Blueline Industries in Chino, CA states that its LT7 tube lasers handle 6 inch square and 6 inch round tube fully automatically, and that it processes profiles up to 13 inches in diameter with 5-axis capability. Tube laser cutting capacity is not one number, so confirm your exact spec.
This guide explains which profiles a tube laser can process, why published limits vary, and what to send so a shop can say yes or no fast.
What tube sizes can a tube laser cut?
Every tube laser has a size window set by its chuck, its loading system and its cutting head. Blueline states its LT7 tube lasers cover 6 inch square and 6 inch round tube with fully automatic handling. Blueline also states it processes profiles up to 13 inches in diameter using 5-axis capability for complex beveling and angle cutting.
Other shops publish different windows because they run different machines. Published round tube limits we reviewed range from about 8-3/4 inches to 10 inches at other shops. Machine builders also offer lines that reach well past that. The lesson is simple: a capacity number only means something for a specific machine.
What the numbers on a spec sheet really mean
A maximum diameter is the largest round tube a machine can hold and cut. A square or rectangular limit is usually given as a width, or a width and height. Ask whether a number describes automatic loading or manual loading. Blueline's 6 inch figures are stated as fully automatic capacity.
What tube shapes can a tube laser cut?
Tube lasers work best on round, square and rectangular tube. Blueline states it also processes oval tube and structural profiles, including angle, channel and C-channel. Shape affects how the tube is held, how features are placed, and how the laser reaches each face.
ProfileWhat Blueline statesWhat to confirm for your partSquare tube6 inch capacity on LT7 tube lasers, fully automaticOutside width and wall thicknessRound tube6 inch capacity on LT7 tube lasers, fully automatic; larger profiles up to 13 inches in diameterOutside diameter, wall and cut typeRectangular tubeListed among processed profilesBoth outside dimensions and wallOval tubeListed among processed profilesMajor and minor dimensionsAngle, channel, C-channelListed among structural profilesLeg lengths, thickness and length
Why do tube laser size limits differ between shops?
Limits differ because machines differ. Each tube laser is built around a chuck size, a weight rating, a maximum length and a laser power. A shop with a smaller machine may be fast on small tube. A shop with a larger machine may cover heavy or big-diameter tube. Neither number is wrong.
Published numbers on other shops' sites show how wide the range is. One lists finished parts up to 96 inches. Another lists finished parts up to nearly 20 feet. Stainless wall limits vary too, with one listing a 0.25 inch maximum and another listing 5/16 inch. Treat these as examples of variation, not as Blueline's specs.
Factors that shape what a machine can handle
- Outside size of the tube, whether diameter or width.
- Wall thickness for the material in question.
- Weight per foot and total stock weight.
- Length of the raw tube and of the finished part.
- Laser power, which Blueline lists as 4kW on its LT7 tube lasers.
How do wall thickness, length and weight limit a tube laser?
Size is only one limit. Wall thickness, tube length and weight also set what a machine can cut. A thick wall in stainless can need a different setup than the same wall in carbon steel. Heavy stock needs support during loading. Send your wall thickness and material, and ask Blueline to confirm.
Think of it as a checklist rather than a single number. A tube can fit on diameter and still miss on length or weight. Confirming all four early prevents a redesign after the quote.
Materials Blueline states it processes
Blueline states it processes carbon steel, stainless steel, aluminum and specialty alloys. For examples, see its steel tube laser cutting and stainless steel tube processing pages.
How do you know if your tube will fit?
The fastest route is to ask before you finalize the design. A quick spec check costs nothing and can save a redesign. Shops see these questions every day, and a clear answer on size is usually one of the first things a quote request resolves.
Send the shop your tube size, wall thickness, finished length, material and quantity, plus a 3D model if you have one. With those five details a shop can tell you whether your tube fits a machine. If the tube is near a limit, say so in your first message.
- Write down the outside size, using diameter for round or width and height for square and rectangular.
- Add wall thickness and material grade.
- Note the finished part length and the raw tube length if known.
- State the quantity and whether it is a prototype or a production run.
- Attach a 3D STEP file and a dimensioned drawing.
When a project is large
Blueline has handled large programs. Examples include the Coachella Sahara Stage (1M+ lbs of steel, 2025), the Caltrans I-5 pedestrian bridge in Irvine (500,000+ lbs of steel, 2025) and an AI data center cooling project in Sacramento (16 truckloads of stainless steel, 2025). Size questions still start at the part level: confirm each profile and wall before you commit to a plan.
Where 5-axis beveling fits in
Blueline states its larger-diameter capability includes 5-axis beveling and angle cutting. That matters for weld-prep edges and angled joints on bigger tube. If your design needs a bevel, include the angle and the edge it applies to.
Frequently Asked Questions
What is the largest tube diameter Blueline can process?
Blueline states it processes profiles up to 13 inches in diameter, with 5-axis capability for beveling and angle cutting. Its LT7 tube lasers are stated at 6 inch square and 6 inch round, fully automatic.
Can a tube laser cut square and rectangular tube?
Yes. Square and rectangular tube are core profiles for tube lasers. Blueline lists both among the profiles it processes.
Can a tube laser cut channel and angle?
Blueline states it processes structural profiles including angle, channel and C-channel. Send the leg lengths, thickness and length so the shop can confirm.
Does tube size change the cost?
It can. Size, wall thickness, material and quantity all shape a quote. Blueline gives quotes after reviewing your files, so send the full package.
What if my tube is outside the listed range?
Ask anyway. A shop may route the job to a different setup or tell you plainly that it is not a fit. Early answers save design time.
Check your tube size with Blueline
Blueline is a Chino, CA tube laser cutting and precision fabrication shop. We ship to customers across the West. See our precision tube fabrication work, or read how tube laser cutting works for the basics.
Get a Quote: send your tube spec at bluelineind.com/contact-us or call (951) 833-5597.
.png)
