Tube Welding Equipment for Large Diameter Stainless Steel Pipe Making

Product Description

Company Profile

Product Description

Precision Industrial Stainless Steel Tube Making Machine

Industrial stainless steel tube mill is an automated production line that continuously transforms stainless steel coil into precision welded tubes through roll forming, welding, bead treatment, sizing, and straightening. The complete line integrates uncoiling, forming, welding, bead rolling, sizing/straightening, in-line inspection, and cut-off, widely used for heat exchangers, sanitary tubing, automotive lines, and chemical process piping.

Typical Technical Specifications
Technical Data	GG 40	GG 50	GG 60	GG 80	GG 100	GG 120	GG 180
Pipe Dia.(mm)	12.7  - 50.8	25.4 - 76.2	38.1 -114	50.8 - 168	133 - 273	159 - 325	219 - 426
Pipe Thickness (mm)	0.3 - 2.5	0.5 - 3.5	0.5 - 4.5	1.0 - 5.5	1.5- 8.0	2.0 - 10.0	3.0 - 12.0
Note	We accept orders with client's designs
Machine Configuration
Unit	Function			Technical Notes
Uncoiler	Holds and feeds stainless coil			Powered/manual; hydraulic expansion mandrel; anti-scratch surface protection
Forming Section	Multi-pass roll forming into open tube			Alternating horizontal & vertical rolls; stainless or tool-steel rollers with surface treatment
Welding Section	Closes and welds the tube seam			TIG, laser, or plasma welding
Bead Rolling	Flattens weld bead, removes excess height, smooths ID/OD			External bead roller + internal bead scarfing (optional)
Grinding Section	Polishes weld bead, removes surface oxidation and micro-defects			Configurable with 1-4 grinding heads; manual handwheel or automatic pneumatic feed available
On-line Bright Annealing	Post-weld solution treatment, relieves welding stress			Induction heating + inert gas shield
Sizing & Straightening	Finishes OD, roundness, and straightnes			Multi-pass sizing rolls (2-4 stands) + Turk's head straightener
Cut-off	Cuts tube to length			Servo/hydraulic flying saw; non-stop cutting
Run-out Table	Collection			Auto stacking
Optional Configurations
1.Automatic weld seam tracking system — CCD/laser vision, real-time seam positioning 2.In-line eddy current / ultrasonic testing 3.Internal gas shielding system (argon purge inside tube during welding) 4.On-line bright annealing unit 5.Automatic tube bundling & wrapping machine

Applications:

Industrial stainless steel welded tubes are widely used across multiple industries thanks to their excellent corrosion resistance, high strength, and superior surface finish:

Heat Exchanger & Condenser Tubes, Sanitary Fluid Transfer Tubing, Automotive & Transportation Tubing, Architectural & Structural Tubing, Precision Machinery & Instrumentation Tubing, Furniture & Home Appliance Tubing.

Client Cases

Industrial Pipe Making Machine Customer Site

Air-Conditioning Tube Mill Line — 3-Unit Industrial Tube Mill Project

A customer inquired about stainless steel tube mills for air-conditioning refrigerant lines, demanding exceptional weld integrity for downstream bending and flaring. Our engineering team delivered a complete proposal and quotation within 24 hours. Three mills were configured with internal bead scarfing and in-line bright annealing to ensure smooth internal surfaces and uniform microstructure. The order was confirmed within two weeks. All lines are now in stable operation — welds pass flaring tests without cracking, and the tubes have been successfully qualified for the air-conditioning supply chain.

Looking for industrial tube mill? Contact us now for professional solutions and factory quotes!

FAQ

FAQ: Industrial Stainless Steel Pipe Making Machine

Q1: What are the main differences between decorative tube mill and industrial tube mill?
A: While the basic process is the same (roll forming + welding), the two differ significantly in machine structure and configuration. Industrial tubes have greater wall thickness (0.8-16.0mm) with higher forming resistance — these mills use industrial turbine worm gearboxes for higher torque transmission, reinforced housings to bear greater forming force, and dual-motor drives for stable power delivery. Decorative tubes are thin-walled (0.2-1.5mm) and fine with standard gearboxes and a single motor. Additionally, industrial tube mills can be optionally equipped with internal bead scarfing and in-line bright annealing to meet the standards of high-end products like heat exchanger and boiler tubes; decorative tube mills typically omit these features.
 
Q2: Why do prices vary so much for the same tube diameter range?
A: Pricing is driven by five key factors: (1) Welding method — laser welding equipment costs significantly more than TIG; (2) on-line annealing — bright annealing units are a major cost item; (3) Automation level — options like auto weld tracking, auto grinding, and auto stacking; (4) Roller material & quantity — stainless steel rollers cost 3-5× more than tool steel; (5) Control system — basic PLC vs. smart systems with remote monitoring. We recommend matching configuration to your target product precision and production volume to avoid over-investment.
 
Q3: Can one line produce multiple tube sizes? How long does a size changeover take?
A: Yes. A single forming + sizing section typically covers a certain OD range (e.g., φ12.7-50.8mm), with different sizes achieved by swapping roller sets. Standard roller changeover takes about 2-3 hours per set. 

Q4: Can Industrial Tube Mill line be equipped with online bright annealing or bead rolling machine?
A: Yes, our industial pipe making machines are modularly designed. We can integrate Online Bright Annealing (O.B.A.) systems to remove internal stresses and Online bead rolling machine to to roll the inner and outer welded seam repeatedly directly on the line.