Seamless carbon steel pipes are produced according to ASTM A106 GrB, A53, API 5L standards. To express the thickness of seamless pipes, the word SCH, which is known as “Radeh” in Farsi, is used. By knowing this term and referring to the ASME B36.10 standard, the thickness and diameter of the pipe can be extracted based on millimeters.
Sch is the abbreviation of the term (Schedule) which is always introduced with the number or letters in front of it. For example, Manisman pipe class 40, which is one of the most widely used pipes, specifies the thickness of the wall and the pressure of the pipe in question. ,
The most important application of graded pipes is building construction facilities, especially in a place with high working pressure. Of course, according to their diameter and thickness, these pipes can be used in cases such as petrochemical industries, transfer of various fluids, especially gas and oil, production of fittings, pharmaceutical industries, etc. The classification of graded pipes according to wall thickness is as follows:
Sch10- Sch20- Sch30- Sch STND- Sch 40- Sch60- Sch Xs- Sch80- Sch100- .Sch160- Sch120- Sch140- Sch160- Sch XXS
Needless to say, each size has a different wall thickness and is unique in its grouping.