Introduction to a Manufacturing Method for Stainless Steel Pipes Used in Food Machinery

22 Sep,2021

Introduction to a Manufacturing Method for Stainless Steel Pipes Used in Food Machinery

In the prior art, to enhance the corrosion resistance of the inner wall of stainless steel tubes used in food-processing machinery, a liner is typically fitted inside the tube. pvc Liner; however, in practical applications, it is difficult to ensure that the interiors of the two steel pipes… pvc The liners are joined together; even when a makeshift connection is made via electromagnetic hot‑melt welding, the inability to monitor the condition of both liners in real time during the process often results in leaks at the joint.

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Technical highlights: For Overcome the shortcomings of the prior art, Our technical staff A stainless steel pipe for food machinery is provided. Stainless steel tubing for food machinery The technical solution adopted is a stainless steel pipe for food‑processing machinery, comprising a pipe body and a first inner liner and a second inner liner disposed within the pipe body. The first and second inner liners are each fitted at their opposite ends with a connector and a plug, respectively. On the outer side of the connector, from inside to outside, there are a first step, a second step, and an insertion end; the peripheries of both steps are arcuate. The inner side of the connector also carries a conical ring on its first sleeve. The cross‑section of the insertion end is elliptical. On the outer side of the socket, there are two steps corresponding to the steps on the connector, and at the socket’s distal end there is a groove that matches the insertion end. Inside the socket, there is a platform, and on the inner side of this platform there is another conical ring. When the connector and the socket are mated, the two conical rings together with the platform form a tapered opening whose cross‑section is trapezoidal. Each step of the connector defines, with the inner wall of the pipe body, an accommodating cavity intended to house a sealing ring; the sealing ring is an elastic seal, with arcuate end faces on both sides, and a semicircular protruding ring in its central portion. At the opposite ends of the first and second liners, there are interfaces; the inner side of each interface features a threaded section, while the outer side extends outward to cover the end of the respective liner that faces away from the other. At the junction between the interface and the end of the first or second liner, multiple locating projections are provided, and the liner ends themselves include several locating grooves. The insertion end is an elastic plastic component integrally joined to the connector. The first liner, the second liner, the connector, the socket, and the sealing ring are all made of food‑grade polyvinyl chloride. The outer wall of the pipe body is further coated with a corrosion‑resistant layer. The threaded section is connected to the inner wall of either the first or the second sleeve via a conical sleeve. The threaded section, the conical sleeve, and the first or second sleeve constitute an integral structure, with triangular cross‑sections for the locating projections.

In summary, the aforementioned The advantages of stainless steel tubing for food machinery are: Stainless steel tubing for food machinery The connection between the two liner pipes is both convenient and reliable, minimizing the risk of leakage. Moreover, the two steel pipes are joined using a liner and a double‑ended coupling, thereby eliminating the drawback of conventional methods, in which the two steel pipes are still welded together—a joint that is prone to rusting.


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A high-strength, durable stainless steel pipe for food-processing machinery.

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Seamless Stainless Steel Pipe Manufacturer: A Brief Introduction to Seamless Stainless Steel Pipes