According to different metallographic structure of stainless steel, it is divided into semi Ferritic and semi martensitic stainless steel pipe, martensitic stainless steel pipe, austenitic ferritic stainless steel pipe, etc.
In order to prevent the occurrence of welding pores, the welding parts must be cleaned if there is rust, oil stain, etc.
.The intergranular corrosion of austenitic stainless steel can be prevented by adding Ti, Nb and other elements that can form stable carbides (tic or NBC) and avoiding the precipitation of cr23c on the grain boundary.
The pipe fittings must rotate slowly facing the pipe. If they are tight, please use clean water pipe fittings and sealing rings.
.It has lower linear coefficient than austenitic stainless steel and is close to carbon steel. It is suitable for connection with carbon steel and has important engineering significance, such as the production of composite plate or lining.
Batch size: a small number of single batch products will affect the unit price.
SPCDSPCD—& mdash; Cold rolled carbon steel sheet and strip for stamping, equivalent to China 08Al (1323) high quality carbon structural steel.
The folded stainless steel hot rolled strip is hot rolled into a strip with a thickness of 80mm-00mm and a width of 50mm-1200mm.
The continuous casting of stainless steel pipe fittings is generally matched with the refining furnace, which has strict requirements on the chemical composition and temperature of molten steel; In order to prevent secondary oxidation of molten steel, non oxidation protection pouring is required during continuous casting production; Strict requirements for refractory materials such as ladle, tundish, nozzle and submerged nozzle.
Stainless steel pipe is a common material in stainless steel, with a density of 93 GCM, which is also called 188 stainless steel in the industry. High temperature resistance of 800 ℃ with the characteristics of good processing performance and high toughness, it is widely used in industry furniture decoration industry and food and medical industry.
High quality and low price.In addition, when selecting the reasonable thickness of the steel plate, its service time, quality and stiffness should be considered, and the strength requirements of the plate under pressure should be considered; Thermal conductivity; Distribution of pressure and format specification of pressing plate.
. 18%), which is better than l and 317L in most environments.
The existence of medium temperature brittle zone requires strict heat treatment and welding process system to avoid the appearance of harmful phase and damage the performance.
Someone asked whether the stainless steel pipe was rusted and caused toxic problems?
Administration.The national standard thickness of stainless steel pipe mainly depends on the thickness of raw materials and processing technology. The thickness of welded pipe is basically the same as that of raw materials. For seamless pipe, it is slightly thinner than that of raw materials. At present, the stainless steel pipe industry is dominated by large negative difference, mainly for the consideration of cost saving, 0 thickness. It provides all kinds of stainless steel plates, stainless steel coils, stainless steel belts, on-site settlement and honest operation. There are offices all over the country for long-term cooperation. Generally there will be 0.91 ~ 1.
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) .
408— Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
.The folded stainless steel hot rolled strip is hot rolled into a strip with a thickness of 80mm-00mm and a width of 50mm-1200mm.
%）.It means: 100 times of Dr + iron loss value (iron loss value per unit weight when 50Hz repeated magnetization and sinusoidal magnetic induction intensity is 5T) + 100 times of thickness value. For example, dr510-50 indicates that the iron loss value is hot-rolled silicon steel plate with thickness of 0.5mm. The grade of hot rolled silicon steel sheet for household appliances is expressed by JDR + iron loss value + thickness value, such as jdr540-50.
6 Density 400 & rdquo; Density of series: 93310s, 309S and 316316 density stainless steel coils of 30323042001 are divided into Austenitic, duplex (ferrite austenite) stainless steel cold rolled coil and stainless steel hot rolled coil.