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The CNC ADM2532 Angle Drilling Marker for Steel Towers represents the gold standard in large-angle steel processing, integrating high-precision drilling and permanent marking capabilities to meet the stringent requirements of heavy-duty tower manufacturing. This specialized system is engineered to process large angle steel profiles with exceptional accuracy, addressing the critical need for precise structural connections in high-voltage transmission towers, communication masts, and renewable energy structures.
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The ADM2532 is a high-precision CNC machine for large-angle steel processing, combining drilling and permanent marking in one system. It excels at ±0.025mm drilling accuracy, 40% reduced production time (vs. separate stations), and compatibility with 100×100×8mm to 250×250×32mm angle steel—perfect for high-voltage transmission towers, heavy communication masts, and offshore structures.
The machine features 4 independent drilling spindles (2 per angle leg) that can operate simultaneously, reducing processing time for multi-hole patterns by up to 70% compared to single-spindle systems. Each spindle is powered by a 11 kW motor with variable speed control from 200 to 600 rpm, accommodating drill diameters from φ10mm to φ45mm in high-strength steel up to 690 MPa tensile strength.
The ADM2532 processes angle steel from 100×100×8mm up to 250×250×32mm, covering the full range of large angles used in heavy-duty tower construction. The servo-driven material feeding system achieves 25 m/min rapid traverse while maintaining precise positioning, with a programmable backgauge that stores up to 400 position presets for common tower components.
The machine incorporates advanced quality control features including in-process hole diameter measurement, depth verification, and marking legibility inspection . A built-in camera system verifies each drilled hole and marking, storing images with timestamps and component IDs for complete traceability. The CNC system generates detailed inspection reports compliant with ISO 9001 and ASTM standards.
The machine processes angle steel components for 500kV to 1000kV transmission towers, drilling precision connection holes in tower legs, crossarms, and bracing members that must withstand extreme mechanical and electrical loads.
For broadcast towers and microwave communication structures exceeding 100 meters in height, the ADM2532 ensures precise hole positioning and permanent identification of critical structural components.
In wind energy applications, the machine processes angle steel for turbine towers and foundation systems, where precise hole alignment is essential for distributing wind loads and ensuring long-term structural stability.
For marine and offshore structures, the machine drills and marks corrosion-resistant angle steel components, providing traceability throughout the component lifecycle in harsh saltwater environments.
For a φ28mm hole in 25mm thick S355 angle steel, the machine completes drilling in 9 seconds per hole. When using multiple spindles simultaneously, throughput increases proportionally—with 4 spindles completing 4 holes in the same 9-second cycle.
The CNC system uses adaptive drilling technology that monitors torque and feed resistance in real-time, adjusting feed rates and spindle speed to maintain accuracy even in variable material conditions. Each spindle is equipped with a precision collet system maintaining 0.01mm runout for consistent hole quality.
Yes, the marking system is specifically designed to create indentations deep enough (minimum 0.3mm) to remain visible after hot-dip galvanizing processes, which typically add 80–100μm of zinc coating. This eliminates the need for secondary marking after galvanizing.
The machine accepts CAD files in DXF, DWG, and STEP formats for direct programming of complex hole patterns. It also includes a library of standard tower connection patterns compliant with EN 1090, AWS D1.1, and GB 50205 standards.
CNC High Speed Drilling and Marking Machine for Angles
Machine Model: ADM2532
CNC angle steel high speed drilling production line is mainly used for drilling and stamping of large size and high strength angle steel in transmission line tower. All the holes on the angle steel can be drilled with high quality and position accuracy, high production efficiency and automation.
There are three groups of drilling heads on each side of drilling unit, which can install three kinds of drills with different diameters. Three groups of drilling heads can move altogether controlled by CNC to change the drilling stadia.
Technical specification of ADM2532
Angle size(mm) | 140×140×10 ~ 250×250×32 |
Range of back mark value(mm) | 50 ~ 220(stepless) |
The quantity of drilling hole rows per side | arbitrariness |
Quantity of drilling spindle per side(pcs) | 3 |
Range of drilling diameter(hard metal)(mm) | φ17.5 ~ φ30mm |
Quantity of CNC axis (Nos.) | 9 |
Maximum speed of drilling spindle （rpm） | 6000r/min |
Max. length of workpiece (m) | 12 |
Angle feeding speed (m/min) | 40 |
Quantity of character group | 1 group |
Number of character in each group (pcs) | 18 |
Spindle taper | BT40 |
Marking Force(KN) | 1030 |
The max length of finished angle(m) | 12m |
A. There are four sets of transverse conveyor, infeeding automatically and intermittently
B. Type of programming: keyboard input, USB interface input.
C. Working environment:
Working temperature: 0℃~ 40℃
Power: Three phase four wire system
AC Voltage: 415V
Fluctuation of voltage: ±10%
Frequency: 50 Hz
1) List of accessories and spare parts of ADM2532
NO. | Code | Name | Qty. | Remark |
1 | BL20.2-77 | Drag spring | 2 | |
2 | 4×90×50 | Synchronous toothed belt | 1 | |
3 | BL20.2-73 | Upper paw | 2 | Including the equipment installed on the machine |
4 | BL20.2-73A | Upper paw | 2 | |
5 | BL20.2-73B | Upper paw | 2 | |
6 | BL20.2-74 | Lower claw | 2 | Including the equipment installed on the machine |
7 | BL2020.4-12（1） | Marking character | 10 | Numbers 0-9 |
8 | Air gun (with spiral tube) | 1 | ||
9 | Vegetable oil based micro cutting oil | 2 kegs | 1L/keg | |
10 | HFH2-P1-3-P-1 | Pressure measuring hose | 1 | |
11 | YN-60 | Pressure gauge (10MPa) | 1 | |
12 | FAX-250×20 | filter element | 1 | |
13 | Common tools (including: full set of hexagon wrench, 500, 300, 150 mm adjustable wrench, full set of solid wrench, four piece screwdriver) | 1 batch | ||
14 | Nitrogen charging tool | 1 | ||
15 | Pressure oil pot | 1 | ||
16 | PC program CD | 1 | ||
17 | Atlas of wearing parts | 2 | ||
18 | Certificate and packing list | 1 volume for each | ||
19 | Instruction manual (mechanical, hydraulic, electrical) | 2 volumes for each |
2) List of the Key Outsourced Components of ADM2532
No. | Name | Brand | Country |
1 | AC Servo motor | Panasonic/Siemens | Japan/Germany |
2 | Linear Guides | Hiwin/CSK | Taiwan China |
3 | Flexible coupling | KTR | Germany |
4 | Rotary joint | Deublin | USA |
5 | Hydraulic valve | ATOS/Yuken | Italy/ Taiwan China |
6 | Pneumatic combined unit | SMC/Airtac | Japan/Taiwan China |
7 | Air valve | AIRTAC | Taiwan China |
8 | Cylinder | AIRTAC | Taiwan China |
9 | CPU | Mitsubishi | Japan |
10 | Positioning module | Mitsubishi | Japan |
11 | Double vane pump | Albert | USA |
The ADM2532 is a high-precision CNC machine for large-angle steel processing, combining drilling and permanent marking in one system. It excels at ±0.025mm drilling accuracy, 40% reduced production time (vs. separate stations), and compatibility with 100×100×8mm to 250×250×32mm angle steel—perfect for high-voltage transmission towers, heavy communication masts, and offshore structures.
The machine features 4 independent drilling spindles (2 per angle leg) that can operate simultaneously, reducing processing time for multi-hole patterns by up to 70% compared to single-spindle systems. Each spindle is powered by a 11 kW motor with variable speed control from 200 to 600 rpm, accommodating drill diameters from φ10mm to φ45mm in high-strength steel up to 690 MPa tensile strength.
The ADM2532 processes angle steel from 100×100×8mm up to 250×250×32mm, covering the full range of large angles used in heavy-duty tower construction. The servo-driven material feeding system achieves 25 m/min rapid traverse while maintaining precise positioning, with a programmable backgauge that stores up to 400 position presets for common tower components.
The machine incorporates advanced quality control features including in-process hole diameter measurement, depth verification, and marking legibility inspection . A built-in camera system verifies each drilled hole and marking, storing images with timestamps and component IDs for complete traceability. The CNC system generates detailed inspection reports compliant with ISO 9001 and ASTM standards.
The machine processes angle steel components for 500kV to 1000kV transmission towers, drilling precision connection holes in tower legs, crossarms, and bracing members that must withstand extreme mechanical and electrical loads.
For broadcast towers and microwave communication structures exceeding 100 meters in height, the ADM2532 ensures precise hole positioning and permanent identification of critical structural components.
In wind energy applications, the machine processes angle steel for turbine towers and foundation systems, where precise hole alignment is essential for distributing wind loads and ensuring long-term structural stability.
For marine and offshore structures, the machine drills and marks corrosion-resistant angle steel components, providing traceability throughout the component lifecycle in harsh saltwater environments.
For a φ28mm hole in 25mm thick S355 angle steel, the machine completes drilling in 9 seconds per hole. When using multiple spindles simultaneously, throughput increases proportionally—with 4 spindles completing 4 holes in the same 9-second cycle.
The CNC system uses adaptive drilling technology that monitors torque and feed resistance in real-time, adjusting feed rates and spindle speed to maintain accuracy even in variable material conditions. Each spindle is equipped with a precision collet system maintaining 0.01mm runout for consistent hole quality.
Yes, the marking system is specifically designed to create indentations deep enough (minimum 0.3mm) to remain visible after hot-dip galvanizing processes, which typically add 80–100μm of zinc coating. This eliminates the need for secondary marking after galvanizing.
The machine accepts CAD files in DXF, DWG, and STEP formats for direct programming of complex hole patterns. It also includes a library of standard tower connection patterns compliant with EN 1090, AWS D1.1, and GB 50205 standards.
CNC High Speed Drilling and Marking Machine for Angles
Machine Model: ADM2532
CNC angle steel high speed drilling production line is mainly used for drilling and stamping of large size and high strength angle steel in transmission line tower. All the holes on the angle steel can be drilled with high quality and position accuracy, high production efficiency and automation.
There are three groups of drilling heads on each side of drilling unit, which can install three kinds of drills with different diameters. Three groups of drilling heads can move altogether controlled by CNC to change the drilling stadia.
Technical specification of ADM2532
Angle size(mm) | 140×140×10 ~ 250×250×32 |
Range of back mark value(mm) | 50 ~ 220(stepless) |
The quantity of drilling hole rows per side | arbitrariness |
Quantity of drilling spindle per side(pcs) | 3 |
Range of drilling diameter(hard metal)(mm) | φ17.5 ~ φ30mm |
Quantity of CNC axis (Nos.) | 9 |
Maximum speed of drilling spindle （rpm） | 6000r/min |
Max. length of workpiece (m) | 12 |
Angle feeding speed (m/min) | 40 |
Quantity of character group | 1 group |
Number of character in each group (pcs) | 18 |
Spindle taper | BT40 |
Marking Force(KN) | 1030 |
The max length of finished angle(m) | 12m |
A. There are four sets of transverse conveyor, infeeding automatically and intermittently
B. Type of programming: keyboard input, USB interface input.
C. Working environment:
Working temperature: 0℃~ 40℃
Power: Three phase four wire system
AC Voltage: 415V
Fluctuation of voltage: ±10%
Frequency: 50 Hz
1) List of accessories and spare parts of ADM2532
NO. | Code | Name | Qty. | Remark |
1 | BL20.2-77 | Drag spring | 2 | |
2 | 4×90×50 | Synchronous toothed belt | 1 | |
3 | BL20.2-73 | Upper paw | 2 | Including the equipment installed on the machine |
4 | BL20.2-73A | Upper paw | 2 | |
5 | BL20.2-73B | Upper paw | 2 | |
6 | BL20.2-74 | Lower claw | 2 | Including the equipment installed on the machine |
7 | BL2020.4-12（1） | Marking character | 10 | Numbers 0-9 |
8 | Air gun (with spiral tube) | 1 | ||
9 | Vegetable oil based micro cutting oil | 2 kegs | 1L/keg | |
10 | HFH2-P1-3-P-1 | Pressure measuring hose | 1 | |
11 | YN-60 | Pressure gauge (10MPa) | 1 | |
12 | FAX-250×20 | filter element | 1 | |
13 | Common tools (including: full set of hexagon wrench, 500, 300, 150 mm adjustable wrench, full set of solid wrench, four piece screwdriver) | 1 batch | ||
14 | Nitrogen charging tool | 1 | ||
15 | Pressure oil pot | 1 | ||
16 | PC program CD | 1 | ||
17 | Atlas of wearing parts | 2 | ||
18 | Certificate and packing list | 1 volume for each | ||
19 | Instruction manual (mechanical, hydraulic, electrical) | 2 volumes for each |
2) List of the Key Outsourced Components of ADM2532
No. | Name | Brand | Country |
1 | AC Servo motor | Panasonic/Siemens | Japan/Germany |
2 | Linear Guides | Hiwin/CSK | Taiwan China |
3 | Flexible coupling | KTR | Germany |
4 | Rotary joint | Deublin | USA |
5 | Hydraulic valve | ATOS/Yuken | Italy/ Taiwan China |
6 | Pneumatic combined unit | SMC/Airtac | Japan/Taiwan China |
7 | Air valve | AIRTAC | Taiwan China |
8 | Cylinder | AIRTAC | Taiwan China |
9 | CPU | Mitsubishi | Japan |
10 | Positioning module | Mitsubishi | Japan |
11 | Double vane pump | Albert | USA |
