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Welding nails
Welding studs are cylindrical head welding studs fixed to the parent material by arc stud welding (standard GB/T 10433), made of SWRCH15A or ML15, with tensile strength ≥400MPa and yield strength ≥320MPa.
Description
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Product definition and core technology
Welding studs are cylindrical head welding studs fixed to the parent material by arc stud welding (standard GB/T 10433), made of SWRCH15A or ML15, with tensile strength ≥400MPa and yield strength ≥320MPa.
Core materials and characteristics
Material: SWRCH15A carbon steel (conventional), 304 stainless steel (corrosion resistant).
Characteristics:
High connection strength: metallurgical bonding with the parent material after welding, excellent shear resistance;
Efficient construction: single nail welding time only takes 0.8-1.2 seconds, suitable for batch operation;
High temperature resistance: stainless steel welding studs can work stably below 200℃.
Functions and applicable scenarios
Functions:
Connect steel components and concrete to enhance the bearing capacity of composite structures;
Fix corrugated steel plates, fireproof boards and other building materials.
Scenarios:
High-rise buildings (connection between rigid columns and concrete), bridge projects (shear keys of box beams), industrial plants (steel truss nodes).
Installation and maintenance
Installation:
Use an arc stud welder with a ceramic seat ring to concentrate arc heat;
The welding current is adjusted according to the stud diameter (e.g., the current of M16 studs is 1200-1500A).
Maintenance:
Check the fullness of the weld, and repair welding is required for unfused areas;
Stainless steel studs should avoid direct contact with carbon steel to prevent galvanic corrosion.
Purchase suggestions
Select the stud length according to the thickness of the parent material (generally the plate thickness + 30mm);
Select heat-resistant stainless steel (such as 310S) for high temperature environments (>300℃).
Guide to Comparing and Selecting Sixteen Major Bolts
| Type | 10.9S large hexagonal bolt | 10.9S shear bolt | T-bolt | U-bolt | Countersunk cross bolt | Butterfly bolt | Flange bolt | Welding nail bolt | Basket bolt | Chemical bolt | Hexagonal bolt series | Carriage bolt | Hexagonal electroplated zinc | Hexagonal colored zinc | Hexagon socket bolt series | Stud bolt |
| Core advantages | Ultra-high strength, friction force transmission | Self-checking, earthquake resistance | Quick installation | Strong adaptability | Beautiful concealed, insulation | Manual convenience | High sealing | High connection strength | Tension adjustment | No expansion stress | Economical and universal | Anti-rotation and anti-theft | Basic anti-corrosion | High corrosion resistance | Beautiful anti-corrosion | High tensile strength |
| Salt spray test | 1000 hours (Dacromet) | 72 hours (galvanized) | 48 hours | 72 hours | 24 hours (galvanized) | 48 hours | 72 hours | 48 hours | 72 hours | 20 years | 24-72 hours | 72 hours | 24-72 hours | 72-120 hours | 48 hours | 48 hours |
| Applicable temperature | -40℃~600℃ | -20℃~200℃ | -20℃~80℃ | -20℃~100℃ | -20℃~100℃ | -20℃~95℃ | -20℃~200℃ | -20℃~200℃ | -20℃~150℃ | -40℃~80℃ | -20℃~80℃ | -20℃~80℃ | -20℃~80℃ | -20℃~100℃ | -20℃~100℃ | -20℃~200℃ |
| Typical scenarios | Steel structures, bridges | High-rise buildings, machinery | T-slots | Pipe fixings | Furniture, electronic equipment | Home appliances, cabinets | Pipe flanges | Steel-concrete connections | Cable wind ropes | Building reinforcement | General machinery, indoor | Wooden structures | General machinery | Outdoor equipment | Precision equipment | Thick plate connection |
| Installation method | Torque wrench | Torque shear wrench | Manual | Nut tightening | Screwdriver | Manual | Torque wrench | Arc welding | Manual adjustment | Chemical anchoring | Torque wrench | Tapping + nut | Torque wrench | Torque wrench | Torque wrench | Nut tightening |
| Environmental protection | Chrome-free Dacromet RoHS compliant | Galvanized RoHS compliant | Phosphating | Galvanized | Plastic RoHS compliant | Plastic RoHS compliant | Galvanized | Heavy metal-free | Galvanized | Solvent-free | Cyanide-free zinc plating RoHS compliant | Galvanized | Cyanide-free zinc plating | Trivalent chromium passivation | Phosphating | No hydrogen embrittlement |
Selection suggestions:
Ultra-high strength requirements: 10.9S large hexagonal bolts, matching steel structure friction type connection;
Seismic and anti-loosening: torsion shear bolts, suitable for equipment foundations with frequent vibrations;
T-slot installation: T-bolts, quick position adjustment;
Pipeline fixing: U-bolts, suitable for different pipe diameters;
Surface flatness requirements: countersunk cross bolts, beautiful and hidden;
Manual tightening: butterfly bolts, no tools required;
High sealing: flange bolts, with gaskets to enhance sealing;
Steel-concrete connection: welding nails, efficient welding;
Tension adjustment: basket bolts, precise control of wire rope tension;
Post-anchoring engineering: chemical bolts, no expansion stress;
General connection: hexagonal bolt series, the first choice for economy;
Wooden structure: carriage bolts, anti-rotation and anti-theft;
Anti-corrosion requirements: hexagonal galvanized bolts, the first choice for outdoor use;
Thick plate connection: stud bolts, suitable for different installation spaces.
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