The P-trap arm is (1 1/2") tubing and the drain opening is (1 1/2")pipe. The exterior diameter of copper tubing is more important than the interior diameter.Įxample: Picture a P-Trap arm that slides into the drain opening under your kitchen sink. The reason the term "copper pipe" is not used is because, copper pipe is not used in sanitary drains copper tubing is used in sanitary drains. No, you don't need calipers look at the application and the joint adapters. In other words pipe sizing is based on interior diminsions and tubing sizing is based on exterior diminsions. The tolerances are higher with tubes compared to pipes and tubes are often more expensive to produce than pipes. If we look at Copper Tubes - ASTM B88 the wall thickness of 0.083"of a 2" pipe is gauge 14. The thickness is often specified as a gauge. The inside diameter of a tube will depend on the thickness of the tube. If we look at Copper Tubes - ASTM B88 the outside diameter of a 2" pipe is 2.125", relatively close to 2". The nominal dimensions of tubes are based on the outside diameter. The tolerances are looser to pipes compared with tubes and they are often less expensive to produce. Nominal Bore (NB) may be specified under British standards classifications along with schedule (wall thickness). The use of NPS does not conform to American Standard pipe designations where the term NPS means "National Pipe Thread Straight". The metric designations conform to International Standards Organization (ISO) usage and apply to all plumbing, natural gas, heating oil, and miscellaneous piping used in buildings. The metric equivalent is called DN or "diametre nominel". It is common to identify pipes in inches by using NPS or "Nominal Pipe Size". The schedule and the actual thickness of a pipe varies with the size of the pipe. Since the outside diameter of a single nominal pipe size is kept constant the inside diameter of a pipe will depend on the "schedule" or the thickness of the pipe. Outside diameter are 2.375" for both schedules. The inside diameters are close to 2" and the nominal diameter related to the inside diameter. The purpose with a pipe is the transport of a fluid like water, oil or similar, and the most import property is the capacity or the inside diameter.įor a ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe the inside diameter - ID - of a NPS 2 inches pipe with The important issue with pipe is the interior diameter and with tubing it is the exterior diameter (nominal size included).
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |