Boiler tube, sectioned, illustrating the manufacture of the "Serve" boiler tube. boiler tube, sectioned
Part of sectioned boiler tube (No. 5), illustrating the manufacture of the "Serve" boiler tube. Sectioned boiler tube
Part of sectioned boiler tube (No. 3), illustrating the manufacture of the "Serve" boiler tube. Sectioned boiler tube
Pre-rounded boiler tube (No 1), illustrating the manufacture of the "Serve" boiler tube. Pre-rounded boiler tube (No 1)