The welding performance is also much better than that of ferritic stainless steel. Generally， preheating is not required before welding and heat treatment is not required after welding.
0 series & mdash; Ferritic and martensitic stainless steel.
nThe domestic prospect is promising， and there is a large demand for building water supply pipes. According to the Ninth Five Year Plan of construction and the outline of long-term objectives in ， the demand for each pipe is ~ km from to ， including km of cold and hot water pipes in residential construction areas. Some people believe that the development of stainless steel water pipes is of great significance to improve the grade of modern urban buildings.
Stainless steel pipe is a common material in stainless steel， with a density of GCM，Stainless steel pipe which is also called stainless steel in the industry. High temperature resistance of ℃，5-inch stainless steel hoseProduct quality plan requirements with the characteristics of good processing performance and high toughness， it is widely used in industry， furniture decoration industry and food and medical industry.
QAbadanStainless steel pipe is a long strip of steel with hollow section and no joints around it. The thicker the wall thickness of the product， the more economical and practical it is. The thinner the wall thickness， the higher its processing cost will be.
Hs series & mdash; Chromium nickel austenitic stainless steel.
— The corrosion resistance is the same， and the strength is better because the carbon content is relatively high.
. Raw material problem of stainless steel pipe. If the hardness is too low， it is not easy to polish (BQ is not good). If the hardness is too low， orange peel is easy to appear on the surface during deep drawing， which affects BQ performance. BQ with high hardness is relatively good.
oThe back is blocked with blocking plate for ventilation protection; Only soluble paper or the combination of soluble paper and blocking plate is used for blocking ventilation protection; Use flux cored wire for backing TIG welding.
HTax included: the invoice contains % tax，Stainless steel pipe so it will also affect subsequent quotations.
NProduct rangeWhen selecting stainless steel water supply pipe carefully observe whether the surface of the pipe is shiny， and pay attention to whether the incision is neat. If these phenomena occur damaged and crushed， they should be carefully considered.
eCMoreover， the cost of packaging requires labor costs， the sum of which exceeds the weight of a single bag.
High temperature oxidation resistance stainless steel plates have high temperature oxidation resistance， but the oxidation rate will be affected by inherent factors such as exposure environment and product form.
Delivery status: to be delivered after heat treatment and leveling.
Where is itiManufacturing 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 pipe stainless steel coil， stainless steel belt and stainless steel pipe，5-inch stainless steel hoseProduct quality plan requirements with high pressure resistance grade， good waterproof performance， fire and high temperature resistance， strong overload capacity， corrosion resistance， radiation protection， long service life， large perforation diameter expansion，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 and can wear a variety of steel grades. After perforation， the round tube blank is successively rolled by three roll cross rolling， 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， they will be detected. Steel pipes should be strictly selected by hand after quality inspection. After the steel pipe is inspected， the number， production batch number， etc. shall be sprayed with paint. And hoisted into the warehouse by crane.
TThe slab solidified on the surface continues to be rapidly cooled through the secondary cooling section until the core becomes solid， and the whole continuous casting process of stainless steel pipe fittings is completed.
Chinas numbering rules adopt the use of element symbols and Chinese pinyin. Open hearth steel: P， boiling steel: killed steel: class a steel: T: Special: ball joint steel and spring steel， such as crm
fStainless steel tube toxic chromium and nickel is not bad for you? Stainless steel contains a lot of chromium and nickel. Why is stainless steel still? The following Tianjin stainless steel pipe factory will answer for you: food grade stainless steel pipes will be corroded into spots for a long time if they are not soaked in acid (vinegar) and salt for a long time. Good stainless steel is a model and never rusts.
lMIn order to protect the welding pool well with argon and facilitate the welding operation， the center line of tungsten electrode and the workpiece at the welding position shall be kept ~ ° Angle， the included angle between filler wire and workpiece surface shall be as small as possible， generally -DEG; about.
In view of the external export difficulties， but it is important for Chinas stainless steel industry to continuously improve its own quality level and comprehensively upgrade.