316 stainless 
316 stainless Shop around and choose affordable stainless steel water supply pipes. Comparing the prices of pipes sold by various companies, we should choose carefully and should not buy them. However, which saves the transmission cost, so the price will not be too expensive.
The stainless steel pipe installed on the pipeline support can be corroded by 200 ppm chloride ion and 2 ppm residual chlorine in an aerobic environment. For carbon steel structural supports, the pipeline shall be insulated to prevent corrosion due to potential difference, and the external insulation cotton shall be wrapped for anti-corrosion treatment. Remember, never use glue and other materials that contain chloride ions, halogens and other corrosive effects on stainless steel pipes.
.First of all, let's understand what stainless steel is. Generally speaking, steel that will not rust is called stainless steel, but in an academic sense, steel resistant to weak corrosive media such as air steam and water and chemical corrosive media such as acid, alkali and salt. Also known as stainless acid resistant steel. In practical application, the steel resistant to weak corrosion medium is often called stainless steel, while the steel resistant to chemical medium is called acid resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical medium corrosion, while the latter is generally stainless. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. Chromium is the basic element for stainless steel to obtain corrosion resistance. When the chromium content in the steel reaches about 12%, chromium reacts with oxygen in the corrosive medium to form a thin oxide film (self passivation film) on the steel surface, which can prevent further corrosion of the steel matrix. In addition to chromium, the commonly used alloy elements include nickel, molybdenum, titanium niobium, copper,Stainless steel fluid pipe, etc., so as to meet the requirements of various uses on the microstructure and properties of stainless steel.
The content of chromium, molybdenum and nitrogen in local corrosion-resistant duplex stainless steel makes it have strong ability to spot corrosion and interstitial corrosion in oxidizing and acidic solutions.
.It has good local corrosion resistance. Compared with austenitic stainless steel with the same alloy content, its wear-resistant corrosion and fatigue corrosion properties are better than austenitic stainless steel.
2: stainless steel pipe: seamless pipe and seamless pipe (longitudinal welded pipe, decorative pipe, welded pipe, welded pipe, bright pipe). There are more than 200 kinds of standard specifications of stainless steel pipe, all sizes, especially the capillary. The capillary is poor to be made of 304 material, otherwise the pipe is easy to burst. You can also customize non-standard pipes for customers. Seamless pipes are mainly used in industry, and the surface is foggy, Not bright. The surface of the slotted pipe is a bright surface, and there is a thin welding line in the pipe, commonly known as welded pipe, which is mainly used for decorative materials. In addition, the pressure resistance of industrial fluid pipe depends on the wall thickness. 310 and 310S are high temperature resistant pipes. They can be used normally below 1080 degrees, and the high temperature resistance can reach 1150 degrees
309— It has better temperature resistance.
L stainless steel pipe is a kind of hollow long round steel, which is mainly used for industrial transmission pipelines and mechanical structural components such as petroleum chemical industry, medical treatment, food, light industry, machinery and instruments etc. In addition, when the bending and torsional strength are the same, the weight is light, so it is also widely used in all kinds of manufacturing mechanical parts and engineering structures.
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%, so as to improve the yield of molten steel.
National standard thickness of stainless steel pipe. Stainless steel pipe is a brand of stainless steel produced according to American ASTM standards. Before the national standard thickness of stainless steel pipe, there are stainless steel pipe national standard thickness national standard wall thickness table product name specification material price (yuan ton) rise and fall welded pipe 6 points 5mm (& phi; 275mm) 3850 + 30 welded pipe 1 inch 0mm (& phi; 330mm)
Test method.Stainless welded disc (grade I) gb1270-80 stainless steel pipe (grade I)
Both ends of the steel pipe shall be cut into right angles and burrs shall be removed.
Performance supplement: main components: 22cr-3ni-2mo-0.16n; national standards: NAS 329j3uns S3 / s3180din / en 446astm a240, ASME sa-240; mechanical properties: tensile strength: & sigma; B & Ge; 0mpa; elongation: & Delta; & Ge; 25%; typical working conditions: 20% dilute, below 60 ℃, annual corrosion rate & amp; lt; 0.1mm; supporting welding wire: er2209. Weight (kg) = length (m) * width (m) * thickness (mm) *Density value specific gravity of stainless steel: ● chromium stainless steel is 75t / m3 ● chromium nickel stainless steel is 93t / m3 ● iron is 87T / m3. Theoretical weight calculation formula of stainless steel plate: Steel theoretical weight length (mm) & times; width (mm) & times; thickness (mm) & times; density value = weight (kg) Stainless steel plate, stainless steel, duplex stainless steel, stainless steel material, Swedish stainless steel brand. The difference between duplex stainless steel plate and austenitic stainless steel plate is that the yield strength is higher than that of ordinary austenite
600 Series&
Total quality management.Stainless steel pipes are divided into hot rolled, hot drawn and cold drawn (rolled) stainless steel pipes according to the connection and rolling process. According to the difference of stainless steel microstructure, they mainly include semi Ferritic and semi martensitic stainless steel pipes, martensitic stainless steel pipes, austenitic stainless steel pipes, austenitic ferritic stainless steel pipes, etc.
Model 420 & mdash& ldquo; Cutting tool level & rdquo; Martensitic steel, an early stainless steel similar to Brinell high chromium steel. It is also used for surgical tools which can be made very bright. Model 430 & mdash; Ferritic stainless steel for decoration,302 stainless steel pipe, such as automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.
If the thickness of the steel plate is not enough, the professional stainless steel plate, stainless steel belt and stainless steel pipe are strictly tested and the quality is guaranteed. The preferential activities are in progress. Welcome to consult. It is easy to bend which will affect the production of decorative plate. If the thickness is too large and the steel plate is too heavy, it will not only increase the cost of the steel plate, but also bring unnecessary difficulties to the operation. At the same time, the allowance that should be left during processing or use of stainless steel plate shall also be considered. The thickness of copper plate is not absolutely consistent, but the thickness of the same steel plate shall be as consistent as possible. Generally, for medium-sized saw plate, the thickness tolerance is 0.05-0.15mm. If the requirements are too strict, the grinding cost will also increase. Generally,Stainless steel honing tube, it is a structural steel plate with high resistance and high degree. The greater the mechanical damage resistance, the longer the service durability, but the grinding and processing cost is also relatively high.
.The corrosion resistance of corrosion-resistant stainless steel plate mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, manganese, etc.) And internal structure, which mainly acts on chromium. 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 passive film, the corrosion resistance decreases.
The content of chromium, molybdenum and nitrogen in local corrosion-resistant duplex stainless steel makes it have strong ability to spot corrosion and interstitial corrosion in oxidizing and acidic solutions.
The shielding gas is argon with a purity of 999%. When the welding current is 50 ~ 50a, the argon flow is 8 ~ 0lmin, the argon flow is 2 ~ 5lmin.