The pipe is sch 10 316 stainless steel.
Orbital welding stainless steel pipe.
The job that has prompted this inquiry has the potential for 2 units a month for the foreseeable future.
Stainless steel is the best material considering life cycle cost sanitation and physical properties such as strength for the water system operator.
The widespread use of autogenous fusion orbital gas tungsten arc welding gtaw in the high purity semiconductor and biopharmaceutical industries combined with modern steel refining technology has made it both desirable and practical to supply type 316l stainless steel with a restricted range of elemental sulfur.
As a result the company decided to integrate stainless steel into its systems and use orbital welding equipment wherever possible.
Orbital welding equipment to weld regular and multilayer high chromium steel for power generation boilers stainless steel for nuclear power generation equipment inconel alloy and other high alloy steels and thick wall stationary pipes.
The combination of orbital and welding refers to a process by which the welding arc travels circumferentially orbiting around a stationary workpiece typically a stainless steel tube or pipe.
Each unit has 7 6 pipe welds 25 4 pipe welds and 19 3 pipe welds.
Successful orbital welding is also dependent upon using high quality tubing material.
The weld quality depends upon having a reasonably clean source of argon for backing and shielding gas.
They exhibit the excellence that german machines are famed for including high precision robust designs powerful drives and ease of operation.
I know nothing about orbital welding other than it costs a lot for the equipment.
The range covers diameters from 1 6 to 170 mm.
Typically only 316l stainless steel tubing not pipe and fittings are used for automatic orbital gta welding and are obtained from a number of specialty manufacturers.
In most cases the tubes are made of austenitic stainless steel but nickel alloys as well as titanium and its alloys can also be found.