A335 P11 Studded Pipe
A335 P11 Studded Pipe, Studded Tubes| Boiler Tubes| Heater Tubes|ERW Tubes What is Studded Tubes? Studded tubes are the product of welding studs onto a tube using our Standard Frequency Electric Welding Studding equipment. The steel studs are automatically resistance welded to the tube, producing high quality forge welds. Our automatic studding machines are capable of handling tube diameters from 60mm o/d to 219mm o/d and standard stud diameter of 12.7mm.