The difference between pipe and tube

       PIPE is a standard model pipe.

　　TUBE is a non-standard model pipe.

　　Pipes manufactured according to ANSI and API standard specifications are called PIPE, and their specifications are represented by "nominal diameter". All other pipes that do not comply with standard pipe specifications.

　　The pipes manufactured by grid are called TUBE or TUBENG, and their dimensions are expressed in outer diameter.

　　Tube is a positive deviation tube with heat exchange, while pipe is a positive and negative deviation tube without heat exchange.

　　1. Differences in specifications

　　Both tube and pipe have standards, and tube has more standard series than pipe. The DN standard for pipe is not the outer diameter, but slightly smaller.

　　Beyond the outer diameter but greater than the inner diameter It can also be customized.

　　2. Difference in purpose

　　Tube is generally used inside containers, especially heat exchange tubes; And pipe mostly refers to the discharge pipe outside the equipment, so generally tube translation.

　　Translated as "pipe" instead of "pipe"

　　Pipe refers to a pipe used for fluid transportation, with a wide diameter range from 1/4 "to 60" or even larger, and the diameter is generally expressed in nominal diameter.

　　The materials include carbon steel, stainless steel, medium low alloy steel, etc; Tube is a tube used in instrumentation or heat exchangers, with a smaller diameter (usually 1 "or less).

　　The inner diameter is represented by the outer diameter, and the materials generally include stainless steel, copper alloy, etc.

　　Pipe - Circular section pipes produced according to the nominal pipe dimensions listed in ANSI B36.10 and ANSI B36.19 tables.

　　Tube - refers to a hollow tube product with continuous circular or any other cross-section around it. Circular tubes can be of any two specifications (but not the same).

　　According to three specifications, the dimensions are determined: outer diameter, inner diameter, and pipe wall thickness. The dimensions and allowable differences (tolerances) shall be determined in accordance with the relevant ASTM or ANSI

　　According to ASME specifications.

　　Shengtian Group supplies various types of pipes and tubes in stock, including Seamless Steel Pipes、Welded Steel Pipes、Galvanized steel pipe、Casing and Tubing， We can also customize prefabricated pipes according to your drawings.