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PontiniThin wall stainless steel pipeA few things to pay attention to

release time:2021-11-30 10:05:11Release user:717HP127443542

At present, stainless steel backing is divided into two processes: back argon filling and non argon filling. Back argon filling protection can be divided into solid wire + TIG process and solid wire + TIG + water-soluble paper process; The back non argon filling protection is also divided into flux cored wire backing welding and welding rod (flux coated wire) backing TIG welding.

When the stainless steel fixed port is welded, it will! be difficult to ventilate on both sides of the weld. At this time, how to ensure the argon filling protection on the inner side of the weld has become a difficult problem. For a long time, facing the national high price, the reasonab{le price an}d perfect service of all kinds of stainless steel plates, stainless steel coils, stainless steel belts and stainless steel pipes have been recognized by the majority of customers. In the actual construction on site, we use two welding joints The above problems were successfully solved by plugging with water-soluble paper on the side, ventilation from the weld center and sealing with adhesive tape on the outside (see Table 3).

PontiniThe main function of chromium is the organizational structure of. Chromium has high chemical stability, can form a passive film on the steel surface, isolate the metal from the outside protect the steel plate from oxidation and increase the corrosion resistance of the steel plate. After the passivation film, the corrosion resistance decreases.

When installing and welding the fixed port of stainless steel pipe, it is difficult to vent on the inner side, and some sides are easy to be blocked. In this case, water-soluble paper + blocking plate can be used for blocking. That is, the easy to vent and good side can be blocked with blocking plate, the difficult to vent and bad blocking plate side can be blocked with water-soluble paper, and the weld on the outer side can be blocked with adhesive tape (see Table 2) .

Tutrakan,Stainless steel pipe cost = actual thickness divided by thickness adjustment price + freight + processing fee. Coil price is switched to flat plate price = coil price, actual thickness adjustment + leveling fee 100. Flat plate price is switched to c.oil price = plate price, thickness adjustment - leveling fee 100. Coil length = coil net weight 93. Coil width. Actual thickness including tax price algorithm = total weight of goods 04 (04 represents 4 points, 07 is 7 points)

2. Raw material problem of stainless steel pipe. If the hardness is too low, it is not easy to polish (BQ is not good). If the hardness is too low, orange peel is easy to appear ?on the surface during deep drawing, which affects BQ performance. BQ with high hardness is relatively good.

There are mechanical, chemical and electrochemical methods to remove the scale of stainless ste-el pipe. Due to the complexity of the composition of the scale of stainless steel pipe, it is not easy to remove the scale on the surface and make the surface highly clear and flat. Generally, the removal of the scale of stainless steel pipe should be carried out in two steps, the first step is pretreatment and the second step is ash removal.


PontiniThin wall stainless steel pipeA few things to pay attention to



Application fields: chemical industry, construction industry.

  ≥520EL(%)

Stabilization treatment. Generally, it is used for 18-8 steel containing Ti and Nb in the solid solution treatment line. After the solid treatment, the carbides of Cr are completely dissolved, while the carbides of titanium removal are not completely dissolved and they are fully precipitated during the cooling process, so that it is impossible for the carbon to form chromium carbides again. Professional L stainless steel pipe, s stainless steel pipe and 904L stainless steel pipe ensure the quality, Guarantee service. Guarantee quality. Your satisfaction is our pursuit! Welcome to inquire. Therefore, intergranular corrosion is effectively eliminated.

Focus on Development,Austenitic stainless steel austenitic stainless steel is developed to overcome the lack of corrosion resistance and brittleness of martensitic stainless steel. The basic composition is crl8% and Ni8%, which is referred to as 18-8 steel for short. Its characteristic is that the carbon content is less than 0.1%, and the single-phase austenite structure is obtained by the combination of Cr and Ni.

Stainless steel export is an important part of China's export economy. It plays an important role in stimulating China's economic growth. However, from the curr〖ent situation o〗f China's st-ainless steel foreign trade, China's stainless steel export has encountered great resistance.

Stainless steel pipe is a kind of economical section steel and an important product in the iron and steel industry. It can be widely used in life decoration and industry. Many people on the market are used to make stair handrails, window guards, railings, etc. 201 and 201 materials are common.


PontiniThin wall stainless steel pipeA few things to pay attention to



Assembly: the sealing ring shall be correctly installed in the U-groove of the pipe fitting, put the pipe into the socket of the pipe fitting and wait for crimping.

Recommendation and consultation,The bearing capacity of decorative stainless steel pipe ice load is the main control load of offshore platform in severe cold area, a total of 18 concrete-filled steel tubular shear members were fabricated to study the effects of outer steel pipe material, void ratio and shear span ratio on the shear capacity of concrete-filled steel tubular in pipe. It is found that the shear strength of members increases with the decrease of void ratio and the increase of concrete strength; The larger the shear span ratio, the smaller the shear strength;. Combined with the test, the empirical formula of shear capacity of concrete-filled steel tubular in pipe is proposed, which is analyzed and verified by ABAQUS finite element modeling software. The results show that the simulation is in good agreement with the test results. In order to study the axial compression performance of stainless steel tube concrete conduit leg and the axial compression performance of stainless steel concrete conduit leg, experiments are used to verify the correctness of the finite element model. The load displacement curves of 19 specimens in 5 groups were compared, and the effects of different void ratio, concrete strength, diameter thickness ratio and bone index on the axial compression performance of concrete-filled stainless steel tubular short columns under axial compression were analyzed. The results show that with the increase of concrete strength, the bearing capacity of specimens increases, but the ductility of specimens decrea,ses; With the increase of void ratio and diameter thickness ratio, the bearing capacity of the specimen decreases; The bearing capacity of stainless steel tube concrete can be effectively improved by adding steel bone; Increasing the bone matching index of steel bone can improve the bearing capacity of the specimen. A compound forming process of double-layer stainless steel pipe for primary circuit main pipeline of station is designed which solves the problem of limited length of finished products in traditional forging or casting process, and meets the special requirements of complex working environment on pipeline performance. The three roll cross rolling forming process of double-layer casing with outer layer 21-2n austenitic heat-resistant stainless steel and inner layer 12cr-12ni martensitic heat-resistant stainless steel was simulated and optimized by using DEFORM-3D finite element simulation software. The internal and external deformation, stress-strain field and temperature field of double-layer stainless steel pipe were analyzed, and the optimal deformation parameter combination was obtained by orthogon;al test. The simulation results show that in the process of three roll cross rolling, the large .values of equivalent stress, equivalent strain and temperature are concentrated in the area between the outer tube and the roll, and the overall performance parameters of the outer tube are greater than those of the inner tube. The range analysis and variance analysis of orthogonal design test show that the optimal deformation parameter is rough rolling temperature 1100 deg; C. Feed angle 8 & deg;, Roll speed: 200rmin. Objective to improve the existing connection mode of the braking system pipe system of railway freight cars, and accurately shape the end of the stainless steel pipe, so as to obtain the forged joint with better mechanical properties. According to the connection mode of the original pipe system and the plastic forming characteristics of steel pipe, a multi-step upsetting and extrusion process for the end of stainless steel pipe is proposed. The process is numerically simulated by DEFORM-3D three-dimensional finite element simulation software, and the forging forming process is analyzed

  ·Cargo box of ship or truck & middot; Food processing equipment standard ASTM / ASME......... A240 UNS S3 / s31803euronorm......... 4462 x2crnimon 23afnor.................. Z3 CrNi 205 azdin.............................. W. NR 4462 corrosion resistance uniform corrosion due to chromium content (22%), molybdenum (3%) and nitrogen content (0

The specific steps of continuous casting billet process of stainless steel pipe fittings are as follows: according to different steel grades, the vibration process of mold is matched with protective slag, which can improve the yield of 10%, save energy and shorten the production cycle, so as to improve the yield of molten steel.

PontiniAfter molten steel casting, stainless steel pipe fittings generally adopt the same vertical, vertical bending or arc continuous caster as carbon steel. The refined molten steel is poured into the ladle, the ladle to be poured is transferred above the tundish mouth through the rotary table, and then the molten steel is tundish through the long nozzle. T,he molten steel in tundish enters the mold through the submerged nozzle for forming, condensation and continuous downward movement.

Duplex stainless steel product description: This stainless steel has good corrosion resistance in urea carbamate solution and high stress corrosion cracking resistance in chloride environment. At the same time, the duplex stainless steel has excellent mechanical properties and can be used in plant construction with high safety requirements.

At low temperature ferritic stainless steel pipe has low-temperature brittleness like carbon steel, but austenitic steel does not. Therefore, ferritic or martensitic stainless steel produces low-temperature brittleness, while austenitic stainless steel or nickel base alloy does not show low-temperature brittleness. Sus410 (13Cr) and SUS430 (18cr) of ferritic stainless steel pipe It shows that the impact value decreases sharply at low temperature. Therefore, it is necessary to pay special attention when using at low temperature. As a way to improve the impact toughness of ferritic series stainless steel high purification process can be considered. With the help of C and N level

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