Before unloading, the first appearance of the inspection. Such as stainless steel pipe packaging is intact without damage; in the unloading, once again cosmetic inspection to confirm that in transit, stainless steel pipe whether suffered accidental damage.

What are the advantages of 316L stainless steel pipe advantages? And what are the main areas of application?

Polishing of stainless steel pipe is actually the process of cutting the surface of stainless steel pipe. Usually, light materials and tools are used to cut the surface of stainless steel pipe by rubbing with the surface of stainless steel pipe, and finally obtain a corresponding smooth surface. In addition, the surface light of stainless steel tube is divided into internal light and external light. External light is used to cut the surface with different coarse-grained linen distribution wheels to obtain a smooth surface. Internal light is to cut the interior of the stainless steel tube with a plastic abrasive head moving reciprocally or selectively inside the stainless steel tube.

Stainless steel sanitary pipe is in contact with the food category, mainly used in the production of food, dairy products, beer, salt, beverages; there are also pharmaceutical, bioengineering and other industries will also be used. As the objects in contact with the human body will be ingested, so the quality of the pipe fittings is very strict. And stainless steel decorative tube material to 201, 304 is mainly, 301, 316 a small amount. The use is mainly stairs, doors, windows, guardrails and other decorative projects. Category has ordinary tube, flower tube, colored tube and so on.

Stainless steel welded pipe in the production, transportation, storage, use of the process of improper operation will cause damage to the surface of the stainless steel welded pipe, in order to ensure that the surface of the stainless steel pipe is not damaged and contaminated, in the production of various processes we should strengthen the protection of stainless steel pipe.

Manual arc welding is a welding method using manual operation of the arc welding electrode for welding. Manual arc welding welding, the use of welding rods and workpieces between the arc will be generated by the welding rod and workpiece local heating to a molten state, the end of the welding rod melted droplets and melted base material fused together to form a molten pool, with the arc moving forward, the molten pool of liquid metal gradually cooled and crystallized to form a weld.

Chromium is one of the more widely used elements in the production of stainless steel heat exchanger tubes. Because chromium is stainless steel are contained in the element, when the chromium element reaches 12%, in the atmospheric environment or in the oxidizing medium chromium can spontaneously form a stable, transparent, very thin passivation film to prevent corrosion, basically will not rust, higher alloy content can be strengthened by the thin film and rapid self-repairing film to improve the resistance to corrosion, that is to say, if chromium is added to stainless steel heat exchanger tube production, it can Increase the mechanical properties and wear resistance of stainless steel heat exchanger tube, increase the hardening degree of steel and the deformation ability after quenching, enhance the hardness, elasticity, antimagnetism, anti-tension, corrosion resistance and heat resistance of steel.

Stainless steel tube in the production and processing is completed after a process - pickling passivation, then the stainless steel tube pickling passivation is how to operate? What role does it play?

We know that stainless steel welded pipe has a strong corrosion resistance, then the corrosion resistance of stainless steel welded pipe by what factors? What is the difference between the corrosion resistance of stainless steel welded pipe in different environments?

In fact, the corrosion resistance of stainless steel pipe is good because of the formation of a layer of purified film on the surface, in nature, it is in the form of a more stable oxide. But although the stainless steel tube according to the use of different conditions, the degree of oxidation is not the same, but the end are oxidized, this phenomenon is usually called corrosion.

Excessive welding, simply put, is in the welding of stainless steel pipe, welding time is too long, welding heat input is too high or welding too many times, beyond the reasonable range of welding process.

304L stainless steel pipe: chromium (Cr) content is the same about 18% - 20%, nickel (Ni) content of about 8% - 10.5%, but the carbon (C) content is lower, not more than 0.03%. The lower carbon content is an important feature of 304L stainless steel pipe.