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Stainless steel is popular because it does not easily stain, corrode, or rust when it comes into contact with water. This sets it apart from ordinary steel while still retaining the strength of the material. This makes stainless steel foil sheets or stainless steel rolls a popular choice for both industrial and commercial applications. To endure different environments, there are a variety of surface finishes and grades for this material. The addition of chromium is what allows this material to avoid rust and survive in harsh environments that steel usually cannot.

Features of Flat Welding FlangesWhen welding flat welding flanges, only one side welding is required, and there is no need to weld the inner port of the pipe and flange connection. The welding installation of butt welding flanges requires double-sided welding of the flanges. Therefore, flat welding flanges are generally used for low and medium pressure pipelines, and butt welding flanges are used for the connection of medium and high pressure pipelines. Butt welding flanges are generally at least PN2.5MPa. Butt welding is used to reduce stress concentration.

Loose flange: This kind of flange is often used in the case where the medium temperature and pressure are not high and the medium nozzle is highly corrosive. The loose flange is generally used in combination with the flanging short joint, that is, the flange ring is loosely sleeved outside the flanging short joint, the pipe is butt welded with the flanging short joint, and the flange sealing surface is processed on the flanging short joint.In addition, there are flat welding ring and butt welding ring plate loose flange.

The oxide film on the surface of stainless steel square tube is thin and dense, which is not easy to fall off. Mechanical cleaning is a common and effective means of stainless steel surface treatment. The iron oxide scale cleaning machine is mainly composed of steel brush roller, driving device, high-pressure water system, cooling water system and clamping device.Some preparations need to be done before welding of stainless steel square tube, which can improve the quality and efficiency of tubeline welding and the safety measures of welding workers.

Inconel 600 alloy has the following properties.        1. good resistance to corrosion by reducing, oxidizing and nitriding media        2. good resistance to stress corrosion cracking at both room temperature and high temperature        3. good resistance to dry chlorine and hydrogen chloride gas corrosion        4. good mechanical properties at sub-zero, room temperature and high temperature        5.

DifferenceProductivityCompared with manual welding electrodes, the continuous welding method of flux-cored welding wire has high production efficiency.

Structural features:Threaded flanges manufactured in accordance with ASME B16.5 are similar to sliding flanges, but the holes shall have tapered pipe threads in accordance with ASME b1.20.1. The thread shall be concentric with the axis of the flange opening, and the alignment deviation (perpendicular to the flange face) shall not exceed 5mm per meter. Threaded flanges are NPs 1 / 2 to NPs 24 in size and pressure classes are 150, 300, 400, 600 and 900. The sizes of class 1500 and 2500 are NPs 1 / 2 to NPs 2 - 1 / 2.Class 150 threaded flange has no counterbore.

201 Stainless SteelCopper content: J4>J1>J3>J2>J5.Carbon content: J5>J2>J3>J1>J4.Hardness arrangement: J5, J2>J3>J1>J4.The order of prices from high to low is: J4>J1>J3>J2, J5.J1（Mid Copper）: The carbon content is slightly higher than J4 and the copper content is lower than J4. Its processing performance is less thanJ4.

How to identify the quality of stainless steel sinks?1. Thickness of water tank steel plate: The high-quality water tank adopts imported 304 stainless steel plate with a thickness of 1mm, while the ordinary low-grade water tank adopts 0.5mm-0.7mm. The method of identification can be determined from the weight and whether the surface is flat.2. Anti-noise treatment: The bottom of the high-quality sink is sprayed or glued with rubber sheets and does not fall off, which can reduce the sound caused by the impact of the water from the faucet on the bottom of the basin, and play a buffering role.3.

314 stainless steel has high high temperature strength and oxidation resistance, is more sensitive to sulfur-containing atmosphere, and has a tendency to embrittlement of precipitates at 600-800 °C. It is suitable for making various furnace components under stress.316 stainless steel, 18Cr-12Ni-2.5Mo With the addition of Mo, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; excellent work hardening (non-magnetic).