Specification of Pipa Baja schedule 40 sch
Pipe Schedule (Sch)
Namely a pipe that has schedule 40.Sch or schedule itself has the meaning of a pipe thickness parameter which is measured from the relationship of pipe thickness to inner diameter (ID) which produces strength to withstand pressure, where Sch has been based on ANSI (American National Standards). Institute).
This schedule, has a number and varies in each NPS (Nominal Pipe Size, with the size in inches). To be clear, the 4 "pipe with schedule 40, has a different wall thickness on the 14" pipe with schedule 40, the same schedule.
Here is how to measure the wall thickness of the pipe to the inner pipe (ID), which is the ratio of the pipe working pressure divided by the allowable stress, which will then be multiplied by 1000. We take for example a steel pipe with a pressure of 350 Psi. Generally, steel pipes have an allowable stress of 10,000 psi. Then the writing of the formula is as follows Sch = (350 / 10,000) x 1,000 = 35. So it is better to use schedule 40. For easier and more practical use, the schedule usually follows the pressure in the bar, with 1 bar = 14.51 Psi. For example, work pressure is 40 bar, so schedule 40 is used,
In fact, apart from the numeric schedule (Sch), there are still three other classifications for measuring pipe wall thickness. The three include, Standard (STD), Extra Strong (XS) and Double Extra Strong (XXS). The three classifications usually overlap in a particular Sch. For example the Schedule Standard (Sch STD) at size 10 ", has the same thickness as Sch 40. For sizes 12" and above, 0.375 "becomes the reference for the STD schedule.
Generally, Sch pipes are often used for non-steel pipes, paralon, and other pipes that do not have a point, Schedule 40 and 80 being the names. The basic material of Hydrant Schedule 40 pipes is usually steel. So that the quality of the Schedule 40 hydrant pipe is absolutely guaranteed, there is no doubt in its quality. Because the material is made of steel, this type of pipe is more resistant to corrosion, where the main cause is oil, salt, and various dangerous chemicals.
