x52 line pipe

Progress of stainless steel pipe welding quality way!
In order to ensure that the stainless steel tube outer surface is not damaged and pollution, the produce of various process should strengthen the protection of stainless steel pipe, mainly has several aspects of content:
Stainless steel pipe processing produces should 316 stainless steel plate have specialized production workshop, avoid austenitic stainless steel and carbon steel processing channel or direct contact with the hard land.
Should have a dedicated hosting, hosting frame should be wood or painted carbon steel stents or pad appearance with rubber cushion, with carbon steel and other metal raw material cut off. Register, storage location should facilitate lifting, and other data check area relative block, should have protective measures, avoid pollution by liquid, avoid and other artifacts hit each other, prevent the pollution and damage of iron metal.
Colorful stainless steel plate quality identification method.
Colorful stainless steel plate 304 commonly used raw materials are material, 304 calender, 201 and 201 rolling material.
Among them 304 than 201 high corrosion resistance, is material x52 line pipe than rolling is flat, light. Because the price difference is big, shoddy, many businessmen with rolling material pretend are material, with 201 pretend to 304. Lead to users for several months colorful stainless steel plate will start to rub off, rust, and even rupture.
So, we will inspect the first thing to do is verify plate of raw materials is you specified.
As a new material of stainless steel material, rely on their own have the characteristics such as corrosion resistance, formability, widely used in aerospace, automotive accessories category. And the use of laser welding for stainless steel occupies very important position, especially in the auto industry, body all use the welding way connection.
Primary refers to the use of laser welding laser ablation and connecting the workpiece can be used as heat source of a welding method. In the process of laser welding, laser irradiation to the welding material appearance, instead, be reflected, absorbed the rest of part of, into the internal information, complete welding principle. In short, the process of laser welding is used by the optical system to gather with high power laser 316ti stainless steel beam, after exposure to the welding material appearance, and then make full use of the data of light energy absorption for heat treatment of welded joint are formed by cooling a melting welding process. Typically, laser welding first divided into two categories, thermal conductivity and deep penetration welding.
Accuracy of the scale of the hot rolled square steel, three poor, poor is superior to the steel specification; at the same level Product flat, plate type well. Finishing choose rolling process, the automatic loop control, ensure that don't heap of steel, steel products with high dimensional accuracy and scale of public servants, three points difference, difference of the same article, rocker and other parameters are better than that of medium plate, and plate type straight degree of good. Cold camber of cut, the length scale of high precision.

Pipes for drinking water pollution, influence quality of life, people always overlooked by people. In order to deal with this problem, the construction of the thin-wall stainless steel tube to change the quality of drinking water, in order to make the thin wall stainless steel pipe in the construction project is more reliable, reasonable economy, environmental health, convenient use and protection, and choose the thin-wall uns s32760 plate stainless steel socket argon arc welding connection, has been the social love. We conducted multiple test and pilot project, and summed up into method, application of counseling construction, ensure the construction quality.
Stainless steel plate normal performance: not easy to damage, easy to rust.
With the continuous development of professional stainless steel, stainless steel deepen influence in all walks of life. Stainless steel on the market is more and more, also with the deepening development of stainless steel profession, in order to get more benefit, more and more DeTiaoGang began to appear on the market. Many DeTiaoGang filled with steel market. DeTiaoGang is the use of scrap steel after simple oven processing produce, such as stainless steel, no quality guarantee and vulnerable to breakage. When the stainless steel is applied to various kinds of produce will form the unimaginable loss.
At least for progress efficiency of acid pickling, uns s31803 sheet pickling system consists of an acid and an oxidant.
Nitric acid, hydrofluoric acid pickling system improvement in HNO3, HF, and metal ions under the synergistic effect of nitric acid, hydrofluoric acid pickling system can remove residual oxide layer, improve the quality of the stainless steel surface, but the pickling process can form more severe NOx and nitrite pollution.
304 is a kind of common stainless steel, 347 stainless steel it is widely used to make for a good comprehensive performance, corrosion resistance and formability of equipment and parts. In order to keep inherent corrosion resistance of stainless steel, chromium steel must contain more than 18, the nickel content of more than 8. 304 stainless steel is produced in accordance with the United States ASTM standard is a trademark of stainless steel. About 304 stainless steel, the composition of Ni element is very important, direct resolution of 304 stainless steel corrosion resistance and its value.
304 is an important element in Ni, Cr, but not limited to these two elements. Specific requirements shall be formulated by the product specification. Professional common situation that as long as the Ni content is more than 8, Cr content is more than 18, can be considered to be 304 stainless steel. This is why the industry 18/8 will call this type of stainless steel stainless steel. In fact, related to the product specification has a very clear regulations on 304, and the product specification for different shapes of stainless steel as well as some differences. Here are some of the common product specification and test.

For typical city walls, commercial and light industrial area, the area inside the light pollution, such as traffic pollution.
Industrial zone of heavy industrial zone of atmospheric a333 grade 6 pipe pollution. Pollution may be because of fuel gas, such as sulfur and nitrogen oxides, or other gas release is a chemical plant or plant. Suspension of particles in the air, as happened in the process of steel production or iron oxide dust deposition can also make corrosion to add.
Coastal areas generally refers to the area within a mile from the beach. However, Marine atmosphere can spread to deep in the interior, especially on the island, prevailing winds from the sea, and the weather. Britain, for example, climate condition is so so, so the whole country to coastal areas. If the wind mixed with the sea fog, especially because transpiration salt deposition agglomeration, and little rain, not often rain, adverse conditions in the coastal area. If there is industrial pollution, corrosion resistance is even greater.
Stainless steel plate used in the grain boundary x60 line pipe corrosion resistance requirements of high chemical resistance, wild outdoor machine of coal, oil industry, building materials heat-resistant parts and heat treatment are difficult parts.
Stainless steel plate in different concentration and temperature of organic acid and inorganic acid, especially in oxidizing medium has outstanding resistance to abrasion function, used in the manufacture of the fabrics of wear resistant acid containers and equipment and pipelines.
Stainless steel tube is to rely on the appearance of 316l stainless steel pipe the rich chromium oxide film (protective film), and corrosion resistance ability. When this layer of protective film is destroyed, will naturally appear rusty phenomenon.
304 stainless steel tube, for example, in the monotony of clean air, has a certain talent for corrosion protection, but it will be moved to the coastal areas, in contains large quantities of salt sea fog, will soon be rusty; The 316 steel pipe is outstanding. Not any kind of stainless steel pipe, therefore, in any environment ingeneral, corrosion is not rust.
Mesh belt type light heat treatment furnace. This furnace is suitable for small diameter thin-walled steel tube, hour yield of about 0.3 to 1.0 tons, processing steel tube length can reach 40 meters, can also deal with rolls of capillary.
Muff type light heat x70 line pipe treatment furnace. Steel pipe in a continuous rack, running in the muffle tube heating, at a relatively low capital deal with small diameter thin-walled steel tube, hours production at about 0.3 tons.
Penetration depth of molten stainless steel welded pipe requirements, do not contain oxide inclusions, heat affected zone as small as possible, argon arc welding of tungsten inert gas protection has good adaptability, high welding quality and good fusion function, its products in the chemical industry, nuclear industry and food industries widely used.

Daily life lead to stainless steel rust factors are: the material not up to standard or shoddy products, production and processing technology is not mature, the external environment impact, stainless steel or corrosive residue deposited on the uns s32750 sheet surface of pollutants. The stainless steel staircase column rust spots, how should we deal with?
We can use the pickling paste or spray auxiliary rust part to passivation chrome oxide film formation, make its restore corrosion corrosion resistant ability. Application of water to wash after pickling, better to remove all contaminants and corrosive residue.
After treatment available to polishing polishing equipment. For local slight rusty spot available petrol, oil mixture combined with dishcloth rusty spot. Also can use the sand blasting. Glass or ceramic particles shot blast cleaning, annihilation, scrub and polishing. Z is under the condition of dry clean, avoid the material cause of contaminants from corrosion medium body. Clean up after the proposal to polished with polishing equipment.
Rolling flange غير مجاز مي باشدt lower than x56 line pipe forging. But some of the large flange forging is not to come out. Such products are mostly with theoretical weight for weight, in accounting, it is not the water line, check mouth, bolt hole and chamfering of lose weight. Tablet product prices low, but if have the process such as processing dovetail groove or special thin thickness of large flange price will be higher. Reason is a machining process complex and thin products and thick spent working procedure is the same. Theoretical weight is according to the following formula to accounting.
In the condition of use is given priority to with ferrite 321 stainless steel sheet organization of stainless steel. Chromium content in 11-30, with a body centered cubic crystal structure. This kind of steel is generally not containing nickel, sometimes also contains a few Mo, Ti, Nb element, this kind of steel with heat conduction coefficient is big, small expansion coefficient, good oxidation resistance, good resistance to stress corrosion and other features, more used in the manufacture of air, steam, water and oxidation resistance acid corrosion parts. This kind of steel is low plasticity, plastic and corrosion resistance decreased obviously after welding faults, so the restriction on the use of it. Pithy skills (AOD and VOD) outside the furnace can make the use of the gap element such as carbon, nitrogen drops greatly, so that this kind of steel is widely used.

Stainless steel plate normal performance: not easy to damage, easy to rust.
With the continuous development of the stainless steel x70 line pipe industry, stainless steel deep influence in all walks of life. Stainless steel is more and more on the market, with the further development of the stainless steel industry, in order to obtain more interests, began to appear on the market more and more DeTiaoGang. Many DeTiaoGang filled with steel market. DeTiaoGang is the use of scrap steel through the oven processing production of simple, such as stainless steel without quality assurance, and vulnerable to breakage. When these in the production of stainless steel is applied to various causes of unimaginable loss.
Chemical properties: resistance to chemical corrosion and electrochemical corrosion properties in steel is super good, second only to the titanium alloy;
Physical performance: heat resistant, high temperature uns c68700 resistant, also resistance to low temperature even ultra-low temperature;
Mentioned stainless steel plate everyone will not feel strange, this plate is very bright and clean appearance, during the period of use can also be combined with the specific requirements for production, is a kind of plastic material is very high. During the use of stainless steel, come into contact with acid or alkaline substances is after reducing chemical material will not have any change, can maintain the basic stability. A lot of people think the processing of stainless steel combined with standard main requirements for design and production, of course, this is one of the stainless steel material processing standards, even when making the material actually follow certain hard Numbers.
Mechanical properties: according to different kinds of stainless uns c70600 steel, the mechanical properties of each are not identical. Martensite stainless steel with high strength, hardness, suitable for corrosion resistance and high strength, high abrasion resistance parts, such as turbine shaft, stainless steel cutlery, stainless steel bearings, etc. Strength of austenitic stainless steel and plastic is very good, not too high, but is stainless steel Chinese super good corrosion resistance, suitable for very corrosion resistant and mechanical performance requirements is not high, such as chemical factory, chemical fertilizer plants, sulfuric acid, hydrochloric acid manufacturers of printing equipment, etc.

Stainless steel is not easy to rust because forming x52 line pipe a rich chromium oxide in the surface of steel body can protect the steel body, 201 materials belong to high manganese steel is 304 high hardness, high carbon low nickel.
Stainless steel tube heat treatment abroad widely used continuous heat treatment furnace with protective gas without oxidation, for the intermediate heat treatment, heat treatment and finished products in the process of production because of lack of oxidation of the surface of the light can get, and cancel the traditional pickling process.
Penetration depth of molten stainless steel welded pipe x56 line pipe requirements, do not contain oxide inclusions, heat affected zone as small as possible, argon arc welding of tungsten inert gas protection has good adaptability, high welding quality and good penetration performance, its products in the chemical industry, nuclear industry and food industry widely used.
High frequency welding is used for carbon steel welded pipe production has a history of more than 40 years, but is used for welding stainless steel pipe is a new technology. Its production of economy, make its products more widely used in building decoration, home appliances and mechanical structure.
High frequency welding has the power to different material, outer diameter, wall thickness of steel pipe can reach higher welding speed. Compared with argon arc welding is the welding speed of more than 10 times. Therefore, in the production of general use stainless steel pipe with high productivity.
Welding speed is not high is the deficiency of argon arc x60 line pipe welding, to improve the welding speed, the foreign research and development a variety of methods. Which has developed from a single electrode welding torch adopts multiple electrode welding torch welding method applied in the production.
Stainless steel pipe welding various welding methods all have their own advantages and disadvantages. How to foster strengths and circumvent weaknesses, several welding methods will be combined to form a new welding technology, meet the demand for stainless steel welded pipe quality and production efficiency, is the new trend of the current stainless steel welded pipe technology development.