Carbon, Alloy and Stainless Steel Pipes - ASME/ANSI B36.10/19.CTS - Copper Tube Size - references outside diameter of tube.DIPS - Ductile Iron Pipe Size - references inside diameter of pipe.IPS - Iron Pipe Size - initially a system established to designate the pipe size representing the approximate inside diameter of the pipe.NPS - Nominal Pipe Size - references inside diameter of pipe.ISO 6708 - Pipework components - DN (Nominal Pipe Size NPS) Nominal Pipe Size - NPS Outside diameters for metric and imperial standards are indicated in the table below. ![]() It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size in millimetres of the bore (ID) or outside diameter (OD) of the end connections. ISO 6708 defines the nominal size - DN - as an alphanumeric designation of size for reference purposes. ISO 6708 - Pipework components - Definition and selection of DN (nominal size) 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". In plumbing pipe size is referred to as nominal pipe size - NPS, or "Nominal Pipe Size". For instance, a 2-inch galvanized steel pipe has an inside diameter of about 2 1/8 inches and an outside diameter of about 2 5/8 inches. Pipes are identified by "nominal" or "trade" names that are loosely related to the actual dimensions. If you’re not afraid to crop and need a larger print size, see our guide: how big is a 5×7 photo? and how big is an 8×10 photo?.Pipes are made of a wide variety of materials - like galvanized steel, black steel, copper, cast iron, concrete, and various plastics such as ABS, PVC, CPVC, polyethylene, polybutylene and more. Just make sure that faces and other important objects aren’t close to the edges of your photo when you’re taking a shot, or choose an alternate crop to ensure nothing is cut off. Unfortunately, most photo printing services don’t tell you about this when you upload your photos. Nearly all photo printers cut off an additional 3mm (approximately 0.12″) from around the outside of your image. Pro Tip: How to avoid faces being cut off from the edges of your photos See our article on the topic to get more clarification. The short answer to this question is that it’s really up to your personal preference and what you’re looking for. See our article on 4:3 vs 16:9 for more clarification on this. The aspect ratio of a 4×6 photo is 3:2, whereas the ratio of a photo taken with your smartphone is likely to be 4:3. What is the Aspect Ratio of a 4×6 Photo?Ī photo’s shape is technically known as an aspect ratio or ratio. What size is 4×6 in Pixels?Īt 125 pixels per inch, a 4×6 photo is 500 x 750 pixels.Īt 300 pixels per inch, a 4×6 photo is 1200 x 1800 pixels. This means that when you use an iPhone or Android camera, your photo has to be cut off (‘cropped’) to make it fit on a 4×6 print – handy to know if you’re putting the photo in a standard size picture frame. The common exception is when you take photos with a smartphone which is a different shape to a 4×6 photo. This is a standard photo print size since it mirrors the aspect ratio of the viewfinder of most digital cameras. ![]() ![]() 4×6 prints are approximately 4 inches by 6 inches, or 4″ x 5 ⅞” (10 x 15cm / 101.6 x 152.4 mm).
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