The compressive strength of duplex stainless steel alloy is twice that of austenitic stainless steel. Compared with L and L， the designer can reduce its weight. Alloy is especially suitable for & mdash; ° F/+° F temperature range， in strict cases (especially for welded structures)， it can also be used for lower temperatures. C≤ . Mn≤ Si≤ p≤ . S≤ . CR ～ Ni ～ mo ～ n. ～ . (AUSTENITIC FERRITIC type)
2Usage: widely used in automobile， tractor and other industries.
mArgon shall conform to the rules of national specifications， and argon with purity of % shall be selected. If the content of impurities is too high，stainless steel sheet the maintenance effect of argon will be weakened and the weld quality will be indirectly affected.
With the development of social economy，316L stainless steel pipeUse of various the application of stainless steel pipe has been more and more popular. It will bring new changes in various fields.
XAs suwayrahThere are ba face， b face， (white skin)， D face， (frosted)， HL (wire drawing)， K face and other surfaces with good quality and brightness.
WiBasic weight (density) / kg of steel plate: SPCC & mdash& mdash; Cold rolled carbon steel sheet and strip are generally used， which is equivalent to qa. The third letter C is the abbreviation of cold. When it is necessary to ensure the tensile test， add t at the end of the brand as spcct.
Han Jianbiao，stainless steel sheet an analyst at Zoomlion steel， pointed out that since， Chinas steel pipe exports have been only or tons per month， of which seamless pipe exports are only about tons per month.
SPCC stainless steel belt is simply an extension of ultra-thin stainless steel plate. It is mainly a narrow and long steel plate produced to meet the needs of industrialized production of various metal or mechanical products in different industrial sectors.
mThe surface resistance is less than mb; Wear protection; Scalable; Excellent chemical resistance; Good alkali metal and acid resistance; Strong toughness; Flame retardant.
YLow temperature processing --- martensitic stainless steel is quenched from austenitizing temperature and then cooled to very low temperature to promote the quenching of martensite. It is suitable for stainless steel which is easy to produce retained austenite.
JGood reputationTheoretical weight: Cr Ni austenitic stainless steel austenitic stainless steel (kg / M) s-wall thickness (mm)
jTWindproof and ventilation. Where there is wind， please take measures to block the net， and take appropriate ventilation measures indoors.
— It is easier to cut by adding a small amount of sulfur and phosphorus.
Both ends of the steel pipe shall be cut into right angles and burrs shall be removed.
projectdManufacturing process of stainless steel pipe hot rolled (extruded seamless steel pipe): round tube blank & rarr; Heating → Perforation & rarr; Three roll cross rolling， continuous rolling or extrusion → Off pipe & rarr; Sizing (or reducing) → Cooling → Straightening & rarr; Hydrostatic test (or flaw detection) → Mark & rarr; The raw material for warehousing and rolling seamless pipe is round pipe blank. The round pipe blank shall be cut and processed by the cutter and the blank with a growth of about m shall be sent to the furnace for heating through the conveyor belt. The billet is sent to the furnace for heating at a temperature of about degrees Celsius. The fuel is hydrogen or acetylene. The temperature in the furnace is the key problem. After the round tube billet is discharged from the furnace， it should be pierced through the pressure piercer. Generally， the more common piercer is cone roll piercer. This piercer has high production efficiency and good product quality. It specializes in selling stainless steel plate， stainless steel coil，stainless steel sheet stainless steel belt and stainless steel pipe， with high pressure resistance grade，316L stainless steel pipeUse of various good waterproof performance， fire and high temperature resistance， strong overload capacity， corrosion resistance radiation protection， long service life， large perforation diameter expansion， and can wear a variety of steel grades. After perforation， the round tube blank is successively rolled by three roll cross rolling，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 continuous rolling or extrusion. After extrusion， take off the pipe for sizing. The sizing machine rotates into the steel embryo at high speed through the conical drill to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the sizing machine bit. After sizing， the steel pipe enters the cooling tower and is cooled by water spray. After cooling， the steel pipe will be straightened. After straightening， the steel pipe is sent to the metal flaw detector (or hydrostatic test) by the conveyor belt for internal flaw detection. If there are cracks， bubbles and other problems inside the steel pipe， the number， specification， etc. shall be sprayed with paint. And hoisted into the warehouse by crane.
FStainless steel pipe is durable and has been recognized by the engineering community， and relevant parties are starting from reducing wall thickness and price， so as to facilitate further promotion. In particular， the price of small-diameter stainless steel pipe is not high， so the supporting connection the reliability and price of pipe fittings are the main factors determining its development. Domestic developers have independently developed connection technology and pipe fittings in Sichuan， Guangdong， Zhejiang， Jiangsu and other places， which is a promising pipe. The Ministry of construction and relevant departments also attach great importance to this new type of pipe. According to the document of China technology market management promotion center and Guo Ke Shi Zi  No. ， on the promotion and application of & ldquo; High diameter to wall ratio and high precision stainless steel medium and high pressure water supply pipes and supporting fittings and special technology & rdquo; It is learned from the notice that the popularization and application of stainless steel pipe technology and product is of great significance to improve the grade of modern buildings in China and improve and ensure the water quality of water supply.
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 considering cost saving and thickness. It has long provided various stainless steel plates， stainless steel coils， on-site settlement and honest operation. There are offices in various places for long-term cooperation. Generally， there will be . ~ .
iStainless steel capillary material: SUS / sus; Inner diameter mm-mm， polished. Purpose of stainless steel capillary: automatic instrument signal tube， automatic instrument wire protection tube; Precision optical ruler circuit， industrial sensor， electronic equipment circuit protection tube; Safety protection of electrical circuit， capillary protection of thermal instrument and internal support of air core high-voltage optical cable. Stainless steel capillary characteristics: it has good flexibility， corrosion resistance， high temperature resistance， wear resistance， tensile resistance water resistance， and provides excellent electromagnetic shielding performance. Stainless steel hose can be bent into various angles and radius of curvature， and has the same flexibility and durability in all directions; The stainless steel hose has flexible pitch， good flexibility and no blocking and stiffness; The stainless steel threading hose has certain tensile resistance between the side buckles of each section to prevent the damage of the hose from exposing the lines laid inside the hose. It is a special product manufacturing enterprise integrating R & D， sales and service. It has long been specialized in selling stainless steel plate， stainless steel coil and stainless steel strip， Stainless steel pipe. The axial tension can withstand times of the nominal inner diameter. The yield strength of duplex stainless steel is more than twice that of ordinary austenitic stainless steel. This characteristic makes the designer reduce the weight when designing products， making this alloy more cost-effective than L. This alloy is especially suitable for - DEG; F/+° F temperature range. For applications beyond this temperature range， this alloy can also be considered， but there are some， especially for welded structures& middot; Pressure vessel， heat exchanger (chemical processing industry).
sYWhen transporting domestic and drinking water， the pipeline shall not pass through the toxic pollution area. If necessary， protective measures shall be taken.
Extrusion method means that the heated tube blank is placed in a closed extrusion cylinder， and the perforated rod moves together with the extrusion rod to extrude the extrusion part from the smaller die hole. This method can produce steel pipes with smaller diameter.