Stainless Steel Polished Pipe and Tube custome with Customized Service

tube, pipe, tubing and piping four different nouns ASME Boilers and pressure vessels specification for , pipe, tubing and piping these four nouns (terms) are very strict in meaning and apply to different occasions. My understanding of four terms is as follows. 1, the tube is round, or has the...
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Tube, Pipe, Tubing and Piping 

ASME Boilers and pressure vessels specification for , pipe, tubing and piping these four nouns (terms) are very strict in meaning and apply to different occasions. My understanding of four terms is as follows.


1. The tube is round, or has the continuous periphery any other cross section shape the Hollow product. The dimensions of the circular tube can be specified by any two of the three of the diameter, inner diameter and wall thickness.


2. Pipe is in line with Asni B36.10 and B36.19 (for stainless steel) the nominal size of the circular cross-section of the tube, its diameter with the NPS indicated that the NPS is inconsistent with the actual outside diameter, such as the NPS8 diameter of 8.625 inches. Pipe wall thickness with schedule No. Indicates that the same NPS number can have a variety of sch. No.. Sch No. There are standard wall thickness (STD), thickened wall thickness (XS) and extra thick wall thickness (XXS), etc.

Therefore, the basic difference between tube and pipe is the size standard on which the manufacturing is based. Secondly pipe only round tube, tube can have various cross-section shape, pipe is only a special case in tube. Third, both tube and pipe refer to the raw materials produced by the material production plant. 5 T9 T: p0 N; K


3. Tubing is used tube Press PG-27.2.1 [OD d≤5in. ( 127mm) The calculation formula of the selected diameter and thickness, and according to the design requirements of processing (such as curved pipe, open groove, and even paint, etc.) after the products made. We can call it a pipe piece.


4. Piping general selection of pipe according to PG-27.2.2 Calculation formula after the selection of NPS and Sch. No, and according to the design requirements of the products manufactured, we call the pipeline, but the boiler factory generally referred to these pipes as catheters.


Difference between Tubing and Piping


1. The choice of raw materials, tubing general selection of tube processing manufacturing, piping selection pipe processing and manufacturing.


2. The formula for calculation is different. Here we do not discuss the difference between computational formulae. And tube, pipe and tubing, piping the difference. The former is the raw material of the factory, and the latter is the product made by the boiler manufacturing plant or the pressure vessel factory. This is the main point that the rules of the boiler and pressure vessel specification distinguish between the meaning and usage of these four nouns (terms). Of course, the pipes that deliver fluids and are installed in place are also called conduits. Therefore, we should distinguish the four nouns from the translation, so as to avoid confusion caused by an understanding of the error. Especially for foreigners (such as authorized inspectors), if the pipe piece (tubing) is said to be pipe (tube), he will be puzzled. Therefore, it is suggested that the tube be translated into a pipe, pipe into a nominal tube, and tubing into a pipe, piping into a pipe (preferably a factory-made product into a catheter, which has been installed to be called a conduit for distinction).


In addition, the pipe is mainly used as a conduit for conveying fluids and has been installed in place, while tube is mainly used as a heat exchanger.

 


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