Preparation of carbon steel pipe

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The raw material of carbon steel tube is round tube blank. The round tube blank is cut and processed by cutting machine to billet with a length of about 1 meter, and then sent to the furnace by conveyor belt for heating. The billets are fed into a furnace and heated at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. Generally more common puncher is tapered roller puncher, this kind of puncher has high production efficiency, good product quality, large perforation diameter, can wear a variety of steel.



After perforating, the round tube blank is successively rolled, rolled or squeezed by three high. After extrusion, take off the pipe to determine the diameter. The sizing machine rotates the cone bit into the steel blank at high speed to punch holes to form the steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the caliper bit. After the steel pipe diameter, into the cooling tower, through water cooling, after the steel pipe cooling, will be straightened.

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After straightening, the steel pipe is sent to the metal flaw detector (or hydraulic test) by conveyor belt for internal flaw detection. If there are cracks, bubbles and other problems inside the steel tube, it will be detected. After quality inspection, the steel pipe is selected by hand strictly. After the quality control of the steel pipe, spray with paint the serial number, specification, production batch number, etc. And hoisted into the warehouse by crane

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Everything you should know about U bend tube

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  Murphy can make  U bend tube  in our factory according to customer requirements. The elbow is heat treated according to the customer’s requirements, and then hydrostatic pressure test and dye penetration test are performed as needed. U-shaped elbows are widely used in  heat exchanger  systems. Heat exchanger equipment based on stainless steel U bend tube plays an important role in the nuclear industry and petrochemical machinery manufacturing. U bend tube heat exchangers are specially designed for high temperature applications, especially steam condensing or hot oil systems. When the differential expansion makes the fixed tube-sheet heat exchanger unsuitable, and in some cases the floating head type (HPF) cannot be selected, the U bend tube heat exchanger will be selected. The surface of the finished U-shaped elbow should be free from scale and scratches after bending. Dimensional tolerance U-bend pipes are in accordance with relevant regulations of TEMA R.C.B. and ASTM A566 and ASTM
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CLASSIFICATION OF HEAT EXCHANGER ACCORDING TO THE HEAT TRANSFER MATERIAL, SURFACE SHAPE AND STRUCTURE

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1. Metal material heat exchanger Common materials are carbon steel, alloy steel, copper and copper alloy, aluminum and aluminum alloy, titanium and titanium alloy. Because the thermal conductivity of metal material is large, the heat transfer efficiency of this kind of heat exchanger is high. 2. Non-metallic material heat exchanger Commonly used materials are graphite, glass, plastic, ceramics, etc. Because of the small thermal conductivity of nonmetallic materials, the heat transfer efficiency of this type of heat exchanger is low. Often used in corrosive systems. hashtag www.murphyfinnedtubes.com 1. Tube heat exchanger A heat exchanger that conducts heat through a tube wall. It can be divided into shell heat exchanger, coil heat exchanger, tube heat exchanger, fin heat exchanger and so on. 2. Plate heat exchanger A heat exchanger that conducts heat through a plate surface. According to the structural form of heat transfer plate can be divided into plate type, spiral plate
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Spiral plate heat exchanger equipment quality problems.

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Spiral plate heat exchanger equipment can be broken down, mostly because of quality problems. Compared with the heat transfer surface of other heat exchangers, the heat transfer surface of this heat exchanger is quite thin, that is, 0.5mm, and the allowable high corrosion degree is 0.05mm/ year. The material of common spiral plate heat exchanger equipment usually USES alloy material (304 or 316), 304 is the low cost of austenitic stainless steel, has the ability to resist corrosion to a certain range of organic matter, but the ability to resist hydrochloric acid and sulfuric acid is weak. Spiral plate heat exchanger equipment can be broken down, but also because of its own maintenance problems. Spiral plate heat exchanger equipment is an important component of heat exchange technology in process industrial equipment. The resilient gasket that seals between the various helical fins is a vulnerable part and also an easily aged part under natural conditions. Its service life has an impo
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