ASTM A213 stainless steel coil heat exchanger for dutch tub

zheheng steel as a professional manufacturer of stainless steel heat exchanger tubes, astm a312 stainless steel heat exchanger tubes, many years. we are stictly according to astm, jis, en, din standard, meantime, this is a stainless steel pipe stockiest .

product description:

NAME: China Factory price manufacturers heat exchanger  stainless steel tube 

STANDARD: ASTM A249, ASTM A269, ASTM A312, ASTM A554CERTIFICATIONIOS9001:2015,ISO/TS 16949:2009

Outer Diameter: 6-89mm

Wall thickness: 0.3-3.0mmGrade304/L, 316L, 321, 309S, 310S, DUPLEX 2205, DUPLEX 2507

Application: Heating Elements,Chemical EquipmentMOQ500KGS

Delivery time: Winthin 25 days after receiving deposit

Payment term: T/T,L/CSupply ability200tons per month

Packing: Export standard package with polywood case or ISPM 15 stamped wooden case

More and more stainless steel heat exchanger tubes are used in heat exchangers

Stainless steel heat exchanger tubes in the tube (also called tube shell, row tube type)of heat exchanger , It has a long history of industrial application and still dominates all heat exchangers.The tubular heat exchanger is mainly composed of shell, tube bundle, tube plate and seal head. The shell body is mostly round with parallel tube bundle inside. Both ends of the tube bundle are fixed on the tube plate.

Two kinds of fluid that heat is exchanged in a tubular heat exchanger. A flow outside a tube whose stroke is called a shell stroke. The wall surface of the tube bundle is the heat transfer surface.In order to improve the heat transfer coefficient of the fluid outside the pipe, a certain number of transverse baffles are usually installed in the shell. The baffle can not only prevent the short circuit of the fluid and increase the fluid speed, but also force the fluid to cross the pipe multiple times according to the prescribed path, which greatly increases the turbulent degree. There are two kinds of commonly used baffles, circular and disk, the former is more widely used. Every time a fluid passes through the tube bundle is called a pipe path, and every time it passes through the shell is called a shell path.In order to improve the speed of the fluid in the pipe, an appropriate baffle can be set up inside the sealing heads at both ends to divide all the pipes into several groups on average. In this way, the fluid can travel back and forth from the bundle several times at a time through only part of the pipe, known as the multi-pipe process. Similarly, in order to improve the external velocity of the pipe, a longitudinal baffle plate can be installed in the shell to allow the fluid to pass through the shell space several times, which is called multi-shell process. In a tubular heat exchanger, the temperature of the shell and the tube bundle is also different due to the different fluid temperature inside and outside.  www.zhstainlesspipe.com

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