Xiaobian will tell you in detail about L stainless steel pipe installation technology.
The two ends of the 6m long steel pipe are mechanically cut
L stainless steel pipe has become a very popular material in the market because of its many advantages. Today, and the pipe end is relatively sharp to prevent direct contact with the sealing ring of the pipe fitting. It is necessary to cut off a small section at both ends of the pipe or grind off the corner edge with a hand grinder, and then clamp the pipe fittings.
.That is 188 stainless steel. The GB brand is 0Cr18Ni9. 309 & mdash; it has better temperature resistance than it.
Stainless hot plate (grade I) GB4239-91 stainless cold strip (grade I)
.From the perspective of metallography, because stainless steel contains chromium, a very thin chromium film is formed on the surface which is separated from the corrosion resistance of oxygen invaded in the steel.
— General model; 188 stainless steel. The GB brand is 0Cr18Ni9.
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.
(III) steel exports grew rapidly. The supply and demand of domestic steel market is unbalanced, and the export of enterprises. From January to June, a year-on-year increase of 6%; 6.83 million tons of steel were imported, down 8%, and 320000 tons of billets and ingots were imported, up 50%. Converting billets into crude steel, the cumulative net export was 25.06 million tons, a year-on-year increase of 13%, accounting for 4% of China's crude steel output. In terms of export price, the average export price of bars and wires from January to June was 623 US dollars per ton, a year-on-year decrease of 18%; US $832 tons of plate, a year-on-year decrease of 8%.
Austenitic stainless steel is generally used for manufacturing and manufacturing chemical equipment components, low-temperature equipment components in refrigeration industry, also known as strip steel. It is divided into hot rolling and cold rolling, as well as ordinary steel strip and high-quality steel strip. There are many kinds of stainless steel belts! Wide use! There are: 201 stainless steel belt, 202 stainless steel belt, 304 stainless steel belt, 301 stainless steel belt, 302 stainless steel belt, 303 stainless steel belt, J4 stainless steel belt, 309S stainless steel belt, 316L stainless steel belt, 317L stainless steel belt, 310S stainless steel belt, 430 stainless steel iron belt, etc! Thickness: 0.02mm-4mm, width: 5mm-1550mm, can be customized without standard!
Market trend.In the building water supply pipe system, since the galvanized steel pipe has ended its glorious history of one hundred years various new plastic pipes and composite pipes have developed rapidly. The professional stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe have advanced technology, strict testing, more affordable price and more preferential treatment. Welcome to consult. However, there are still some deficiencies in various pipes to varying degrees, It is far from fully meeting the needs of water supply pipeline system and national requirements for drinking water and related water quality. Therefore, relevant experts: building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, stainless steel pipe is recognized as one of the pipes with good comprehensive performance in metal pipe. Chemical analysis: carry out chemical analysis on the chemical composition of the material and the chemical composition meets the requirements
National standard thickness of stainless steel pipe when American standard stainless steel pipe is used, there are different tolerances for seamless hot expanded pipe, seamless cold rolled pipe and welded pipe according to different dimensions. For example, for hot expanded pipe with diameter less than 100mm, when the thickness is 4mm and less, the upper limit tolerance of thickness is 40%; If the standard of stainless steel pipe is Chinese standard, according to the tolerance of stainless steel pipe for fluid transportation in gbt14976, the tolerance here is the tolerance when ordering according to the nominal thickness; According to the manufacturing method, the thickness standard of stainless steel pipe is divided into hot rolling and cold rolling, including thin plate with thickness of 0.5-4mm and thick plate with thickness of 5-35mm. The specific gravity of stainless steel pipe is 9. The weight = specific gravity of length and width of thickness, and the weight of plate with thickness of stainless steel pipe of 1mm = 11 m 2 m 93 = 86 kg 2 m (length) 1 m (width) 0.01 M (thickness) 93 (specific gravity) = 0.1586 tons (weight)
Stainless welded disc (grade I) gb1270-80 stainless steel pipe (grade I)
Do a good job of preliminary data research. In the highly competitive market, stainless steel pipe should go deep into the hinterland. It is essential and crucial to do a good job of pre market data research; Only by fully grasping consumer demand trends, habits and other data can we have more confidence to compete for market share. Therefore, such as manual operation or automatic operation, and the quality requirements for materials, such as hardness, gloss, etc. Economic accounting should also be considered. Each time the steel plate is newly polished, it is required to produce a number of decorative plates with slow quality.
Production process of stainless steel welded pipe: raw material - strip - welded pipe - end repair - polishing - Inspection (spray printing) - Packaging - shipment (warehousing) (decorative welded pipe).
Do a good job of preliminary data research. In the highly competitive market, stainless steel pipe should go deep into the hinterland. It is essential and crucial to do a good job of pre market data research; Only by fully grasping consumer demand trends, habits and other data can we have more confidence to compete for market share. Therefore the editor of stainless steel pipe believes that in-depth data mining and comprehensive market analysis are powerful for stainless steel control manufacturers in this movement.
.At this time, we usually answer directly: no! What we produce is stainless steel decorative pipe, which belongs to stainless steel slotted pipe. It can not be used as stainless steel water pipe. If you want to choose stainless steel water pipe, you must choose stainless steel pipe.
Chinese brand cold rolled non oriented silicon steel strip (sheet) means: DW + 100 times of iron loss value (at the frequency of 50Hz, the magnetic induction peak with sinusoidal waveform is the unit weight iron loss value of 5t) + 100 times of thickness value. For example, dw470-50 represents cold-rolled non oriented silicon steel with iron loss value of 7W / kg and thickness of 0.5mm. Now the new model is 50W470.
When selecting stainless steel water supply pipe, carefully observe whether the surface of the pipe is shiny, damaged and crushed, and pay attention to whether the incision is neat. If these phenomena occur, they should be carefully considered.