Stainless welded pipe (grade y) gb- stainless cold plate (grade I)
8(VI) the growth rate of fixed asset investment in the iron and steel industry dropped significantly. From to June， the investment in fixed assets in the iron and steel industry was . billion yuan， a year-on-year increase of %， of which the investment in ferrous metal smelting and rolling was . billion yuan， a year-on-year increase of %， a year-on-year increase of %，304 stainless steel strip and the growth rate fell sharply by percentage points.
kModel & mdash; General model; stainless steel. The GB brand is CrNi.
Cold rolled stainless steel strip; Stainless steel strip / coil & rdquo; As raw material，410 magnetic stainless steelIssues to consider high dimensional accuracy and good mechanical properties. Most products are rolled and can be processed into coated steel plate; Production process of cold rolled stainless steel strip / coil: . Pickling → . Normal temperature rolling → . Process lubrication → . Annealing → . Leveling → ⒍ fine cutting → ⒎ packaging → . Reach customers.
JCarlaThe inventory of stainless steel pipes may be an important factor in market conditions. This is because at this stage Width & amp; lt; mm～mm gt;； [& ldquo; cold rolled steel strip / coil & rdquo;] has the advantages of smooth and smooth surface， steel inventory has become an important index to investigate and judge the situation of stainless steel pipeline shopping malls and has become a wind vane to judge the future market trend. What was the stock of stainless steel tubes at that time? It directly affects the air in the mall， and then distributes the business behavior of participants in the mall. The agitation in the futures market is more direct. If there is an abnormal change in inventory， whether it increases or decreases， it will become a speculative type of mall participants.
OgThe Chinese brand cold rolled non oriented silicon steel strip (sheet) represents: DW + times of iron loss value (at the frequency of Hz， the waveform is sinusoidal， and the magnetic induction peak is T per unit weight iron loss value) + times of thickness value. For example， the market supply and demand fell into an imbalance， and the steel price entered a downward channel，304 stainless steel strip which has been weak for more than months. As of June ， ， the steel price index had dropped to . points lower than the initial points. The prices of the eight steel varieties mainly counted by the iron and Steel Industry Association decreased to varying degrees， with an average decrease of %. In terms of varieties， the prices of construction wire rod and rebar， which account for a large proportion of Chinas steel output， fell by % and % respectively， and the prices of medium and heavy plate and hot rolled coil fell by % and % respectively.
Hydraulic test shall be conducted for the steel pipe bearing fluid pressure to test its pressure resistance and quality. It is qualified if there is no leakage or expansion under the specified pressure. Some steel pipes shall also be subject to crimping test， flaring test and flattening test according to the standard or the requirements of the demander.
fVickers hardness stainless steel pipe Vickers hardness test is also an indentation test， which can be used to determine the hardness of very thin metal materials and surface layers. It has the main advantages of Brinell and Rockwell methods and overcomes their basic disadvantages，304 stainless steel strip but it is not as simple as Rockwell method. Vickers method is rarely used in steel pipe standards.
PIts alloy composition (chromium， nickel titanium，410 magnetic stainless steelIssues to consider silicon， aluminum， etc.) and the internal structure of stainless steel coil plate are mainly composed of 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 passivation film is destroyed， the corrosion resistance decreases.
Equality standardIn view of the external export difficulties， on the one hand，tisco stainless steel sheet,taigang stainless steel sheet,stainless steel sheet,stainless steel coil,stainless steel strip,stainless steel tube-TISCO Stainless Steel Co.,Ltd Chinas stainless steel industry should protect its rights， but it is important for Chinas stainless steel industry to continuously improve its own quality level and comprehensively upgrade.
vWThe stainless steel pipe installed on the pipeline support can be corroded by ppm chloride ion and 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.
: stainless steel plate: it can be divided into cold-rolled plate and hot-rolled plate. Its surface has bright surface， fog surface and matte surface. It is commonly known as stainless steel plate， including B plate and Ba plate. In addition， it can also be plated with other light colors according to customer requirements. The main specifications of plates are: m * m， m * m， m * m， m * M， m * m. If customer demand is large， we can cut them according to customer size. In addition， we can replace wire drawing plate， anti sliding plate and electroplating plate
Belt， stainless steel stamping belt， stainless steel precision belt， stainless steel mirror belt， stainless steel cold rolling belt， stainless steel hot rolling belt， stainless steel etching belt， stainless steel stretching belt， stainless steel polishing belt， stainless steel soft belt， stainless steel hard belt， stainless steel medium hard belt， stainless steel high temperature resistant belt， stainless steel stamping belt， stainless steel precision belt， stainless steel mirror belt， stainless steel cold rolling belt， stainless steel hot rolling belt， stainless steel etching belt， stainless steel stretching belt， stainless steel polishing belt， stainless steel soft belt， stainless steel hard belt， stainless steel medium hard belt， stainless steel high temperature resistant belt， etc.
EAt the same time， the Ministry of construction attaches great importance to the promotion and application of stainless steel pipes. The industry standard of stainless steel water pipe was issued and implemented in . The Ministry of construction has issued documents on relevant technical specifications and installation sets of pipeline engineering， which are being prepared by Tongji University. Sales of all kinds of stainless steel plate， stainless steel belt， welcome to telephone inquiry， sincerely invite cooperation! At present， there are stainless steel pipes in Sichuan， Guangdong Zhejiang， Jiangsu and other places， and the products have become mature. Therefore， the time for popularization and application has come.
Rolled steel plate cold rolled steel plate according to surface characteristics summary of surface characteristics manufacturing method application silver white matte hot rolled to the specified thickness， and then annealed and descaled a rough and matte surface without surface gloss. Silver white cold rolled heat treatment and pickling D products are used for applications with lax surface requirements. The gloss of general materials and deep drawing materials is stronger than that after D treatment， After finishing a light cold rolling with polishing roller， the general material Ba is as bright as a mirror. There is no standard， but it is usually the surface processing of bright annealing， and the surface reflectance is very high. For building materials， ~ # (unit) abrasive belt is used for kitchen coarse grinding to grind building materials， The polishing surface obtained by grinding with ~ # abrasive belt in the middle of the kitchen is the same as that obtained by fine grinding. The polishing surface is polished with # abrasive belt. The ultra-fine grinding in the kitchen is polished with # abrasive belt. The luster is similar to that of Ba. It is generally used for grinding with # polishing wheel. It is used for construction. It is specialized in stainless steel plate stainless steel coil and stainless steel belt， Stainless steel pipe quality assurance. New and old customers are welcome to consult during the preferential activities. HL hair line grinding in the kitchen is carried out by grinding materials with appropriate particle size for hair line grinding ( ~ #). There are many buildings and building materials close to mirror grinding. # rotary polishing wheel is used for grinding for art， mirror grinding for decoration， mirror grinding for mirror， and polishing wheel is used for grinding reflector， For decoration， according to the purpose， bridge steel plate， shipbuilding steel plate， armored steel plate， automobile steel plate， roof steel plate， structural steel plate， electrical steel plate (silicon steel sheet)， spring steel plate， special solar plate (Hairui special steel) are common Japanese brands in other steel plates for ordinary and mechanical structures.
b physical properties chemical composition C: it is specified in which is usually also called moti or mechanical properties ys (MPA)
pWIn order to prevent the occurrence of welding pores， the welding parts must be cleaned if there is rust， oil stain， etc.
Hot rolled stainless steel tubes are generally produced on automatic tube rolling mills. After inspection and removal of surface defects， the solid pipe blank is cut into the required length， centered on the end face of the perforated end of the pipe blank， and then sent to the heating furnace for heating and perforated on the piercer. During perforation， it rotates and advances continuously. Under the action of roll and plug， a cavity is gradually formed inside the pipe blank， which is called rough pipe. Then it is sent to the automatic pipe mill to continue rolling. After that， the wall thickness of the whole machine is adjusted， and the diameter is determined by the sizing machine to meet the specification requirements. It is advanced to produce hot rolled seamless steel pipe by continuous pipe mill.