In addition, the need to employ only the necessary number of employees and carefully account for the Tax Office.
Galvanized steel potable water supply and distribution pipes are commonly found with nominal pipe sizes from 3?8 inch (9.5 mm) to 2 inches (51 mm).
It is rarely used today for new construction residential plumbing.
Steel pipe has National Pipe Thread (NPT) standard tapered male threads, which connect with female tapered threads on elbows, tees, couplers, valves, and other fittings.Galvanized steel (often known simply as "galv" or "iron" in the plumbing trade) is relatively expensive, and difficult to work with due to weight and requirement of a pipe threader.It remains in common use for repair of existing "galv" systems and to satisfy building code non-combustibility requirements typically found in hotels, apartment buildings and other commercial applications.It is also extremely durable and resistant to mechanical abuse.Black lacquered steel pipe is the most widely used pipe material for fire sprinklers and natural gas. Źródło: https://en.wikipedia.org/wiki/Plumbing
The valuation carried out the costs associated with the performance of plumbing work are also taken into account the state of water and sewage networks, to which you want to connect a new device, and in case of failure, it is important for the losses which it has led.
Therefore workers decent the plumbing before they join to perform their work will present the customer with an accurate estimate and suggest use of such materials that have a reasonable price..