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AutoSeamless Triple-Draw Pipe Machine

Seamless Pipe Making Machine

Category: Seamless Pipe Making Machine

Tags: Seamless pipe making machine，Seamless tube making machine，Seamless steel pipe machine，Seamless pipe machine，tube making machine，

Detailed Information

The Auto Seamless Triple-Draw Pipe Machine is an automatic cold drawing machine designed for the production of high-precision seamless tubes and pipes.

The machine integrates automatic tube feeding, mandrel positioning, drawing, finished-tube discharge, inspection, and collection into a coordinated production cycle. Its double-chain C-frame structure provides stable drawing force, while the PLC control system manages the main operating sequence, safety interlocks, and alarm functions.

The machine is suitable for carbon steel, bearing steel, low-alloy steel, stainless steel, copper, molybdenum, and various non-ferrous metals. Different machine configurations can be customized according to tube material, billet dimensions, finished tube size, and production requirements.

Key Features

Feature	Description
Automatic Cold Drawing	Integrates feeding, mandrel positioning, drawing, discharge, and collection.
Three-Line Drawing System	Supports multi-line production for improved production efficiency.
Double-Chain C-Frame	Provides a stable drawing structure with the chain center aligned with the drawing centerline.
Automatic Mandrel System	Automatic mandrel lifting, positioning, and adjustment support continuous operation.
PLC Control	Provides automatic sequence control, parameter display, safety interlocking, and alarm functions.
DC Main Drive	Provides stable and energy-efficient main drive operation.
Easy Maintenance	Simplified machine design facilitates operation, maintenance, and component replacement.
High Dimensional Accuracy	Controlled drawing helps achieve accurate tube diameter, wall thickness, and surface quality.

Automatic Drawing Process

Tube Billet Loading
↓
Automatic Detection & Positioning
↓
Mandrel Insertion
↓
Tube & Mandrel Feeding
↓
Drawing Trolley Clamping
↓
Cold Drawing
↓
Finished Tube Discharge
↓
Quality Inspection
↓
Automatic Collection

How It Works

The feeding system detects and positions the tube billet before drawing. The lifting platform then raises the mandrel to the drawing centerline, while the mandrel adjustment system positions the mandrel inside the tube billet.

The drawing trolley clamps the tube head and pulls the tube through the drawing die. After drawing, the finished tube is transferred through the discharge conveyor and moved to the automatic collection rack for inspection and collection.

The drawing trolley then returns to the starting position and prepares for the next automatic drawing cycle.

Main Equipment Structure

Component	Function
Feeding Bench	Receives and positions tube billets before drawing.
Receiving Trough	Uses rollers and lifting mechanisms to position tube billets.
Mandrel Lifting Platform	Raises the mandrel to the required drawing centerline.
Mandrel Adjustment Device	Controls front and rear mandrel positioning.
Drawing Die Seat	Holds the drawing die during the drawing process.
Drawing Trolley	Clamps the tube head and provides the drawing movement.
Main Transmission System	Transfers power from the main drive to the drawing mechanism.
Twin-Chain Drive	Drives the drawing trolley during tube drawing.
Discharge Conveyor	Transfers finished tubes after drawing.
Automatic Collection Rack	Collects finished tubes and provides a platform for inspection.
PLC Control System	Controls automatic operation, safety interlocks, parameters, and alarms.

Applications

The Auto Seamless Triple-Draw Pipe Machine can process:

Carbon steel tubes
Bearing steel tubes
Low-alloy steel tubes
Stainless steel tubes
Copper tubes
Molybdenum tubes
Various non-ferrous metal tubes

It is suitable for seamless tube applications requiring controlled dimensions, wall-thickness accuracy, surface quality, and automated cold drawing production.

Technical Parameters

Parameter	Unit	LB-15T-3	LB-20T-3	LB-30T-3	LB-45T-3
Tube Billet Outer Diameter	mm	Φ8–Φ18 (32)	Φ8–Φ20 (32)	Φ9–Φ32 (42)	Φ19–Φ68
Billet Wall Thickness	mm	0.8–3	0.8–3.5	0.8–3.5	0.8–4
Finished Tube Outer Diameter	mm	Φ5–Φ12.7 (25.4)	Φ5–Φ15 (28)	Φ6–Φ25 (38)	Φ16–Φ60.5
Finished Tube Wall Thickness	mm	0.5–2.5	0.5–3	0.5–3	0.5–3.5
Drawing Passes	——	1, 2, 3	1, 2, 3	1, 2, 3	1, 2, 3
Maximum Drawing Force	kN	150	200	300	450
Drawing Speed	m/min	0–6	0–8	0–10	0–8.5
Trolley Return Speed	m/min	40, adjustable	40, adjustable	40, adjustable	40, adjustable
Mandrel Rod Movement Speed	m/min	0–50	0–50	0–50	0–50
Main Motor Power	kW	30	35	75	75

Automation & Control

The machine uses a PLC automatic control system to coordinate the main production operations.

Control Function	Description
Automatic Sequence Control	Coordinates feeding, mandrel positioning, drawing, discharge, and collection.
Parameter Display	Displays key operating parameters during production.
Safety Interlocking	Helps prevent incorrect operating sequences.
Alarm Functions	Provides alarm indications for abnormal operating conditions.
Automatic Material Handling	Coordinates tube loading, transfer, discharge, and collection.

The original page specifically describes PLC control, parameter display, safety interlocking, and alarm functions.

Tube Quality & Drawing Performance

The cold drawing process is designed to provide controlled reduction of tube diameter and wall thickness.

With appropriate dies, mandrels, and drawing parameters, the machine can help achieve:

Accurate outside diameter
Controlled inside diameter
Consistent wall thickness
Reduced wall-thickness deviation
Improved surface quality
Stable finished-tube dimensions

The original machine description specifically highlights reduction-rate control, wall-thickness deviation correction, and high requirements for tube diameter, wall thickness, and surface roughness.

Applicable Standards

The machine can be configured for tube production according to the customer's required material grade, dimensions, mechanical properties, and final product specification.

Standard	Typical Application
ASTM A511	Seamless stainless-steel mechanical tubing
ASTM A519	Seamless carbon and alloy steel mechanical tubing
ASTM A213 / ASME SA213	Stainless-steel and alloy-steel boiler, superheater, and heat-exchanger tubes
ASTM A269	Austenitic stainless-steel tubing for general service
EN 10305 Series	Precision steel tubes

Frequently Asked Questions

1. What is an Auto Seamless Triple-Draw Pipe Machine?

It is an automatic cold drawing machine designed to reduce the diameter and wall thickness of seamless tubes while improving dimensional accuracy and surface quality.

2. What materials can this machine process?

It can process carbon steel, bearing steel, low-alloy steel, stainless steel, copper, molybdenum, and various non-ferrous metals.

3. What is the maximum drawing force?

The available LB models provide maximum drawing forces from 150 kN to 450 kN, depending on the model.

4. What is the maximum drawing speed?

The maximum drawing speed ranges from 6 to 10 m/min depending on the selected model. The LB-30T-3 reaches up to 10 m/min.

5. Is the machine automatically controlled?

Yes. The machine uses PLC automatic control with parameter display, safety interlocking, and alarm functions.

6. Can the machine be customized?

Yes. The machine can be customized according to tube material, billet dimensions, finished tube size, drawing force, production capacity, and other technical requirements.