Heat resistant
304ti stainlessuitable for a variety of media; The addition of Mo improves the corrosion resistance to reducing salts; It is resistant to marine and industrial atmospheric erosion, and can be used in seawater equipment; Due to its low carbon content, boiling steel: killed steel: class a steel: T8: Special: ball joint steel and spring steel, such as 20CrMnTi 60simn, (C content is expressed in tens of thousands)
.Construction materials shall be prepared and delivered to the site according to the data scheme, and shall be supplied according to the scheme.
In order to ensure that the mechanical properties such as yield strength, tensile strength, elongation and hardness of various stainless steel coils meet the requirements, the stainless steel coils must undergo heat treatment such as annealing, solution treatment and aging treatment before delivery. The corrosion resistance of stainless steel coil mainly depends on its alloy composition (chromium,Price list of 30 stainless steel pipe, nickel titanium, silicon, aluminum, etc.) and the interior of stainless steel coil
.Stainless 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.
The pipes for pipe cutting shall be professionally cut by stainless steel. Rotate it for two circles, then slightly tighten the piece, and then rotate it for two circles until it is cut off. It must not be enough to allow personal strength to be in place at one time to lock the piece to cut off the pipe, otherwise the pipe end will be cut off, and the pipe fittings or rubber rings cannot be inserted; After the pipe above DN65 is cut, the internal and external burrs must be removed with a hand grinder, and an appropriate outer slope opening shall be opened at the same time to avoid damaging the sealing ring.
Allowable depth of straight track: hot rolled and hot-rolled steel pipes with diameter less than or equal to 140mm shall not be greater than 5% of the nominal wall thickness, and the large depth shall not be greater than 0.5mm; cold drawn (rolled) steel pipes shall not be greater than 4% of the nominal wall thickness, and the large depth shall not be greater than 0.3mm.
Classification and grading of standards 4-1 classification: national standard GB industry standard Yb local standard enterprise standard Q / cb4-2 classification: product standard packaging standard basic standard 4-3 standard level (divided into three levels): y level: international advanced level I level: international general level H level: domestic advanced level 4-4 national standard stainless steel bar (level I) gb4241-84 stainless welding disc Park (level H)
Stainless steel export is an important part of China's export economy. It plays an important role in stimulating China's economic growth. However, China's stainless steel export has encountered great resistance.
There are 45 kinds of hot rolled (hot) steel pipes with a diameter of 54 ~ 480mm, 36 kinds of wall thickness of 5 ~ 45mm, molybdenum and nitrogen in local corrosion-resistant duplex stainless steel makes it have strong ability to spot corrosion and interstitial corrosion in oxidizing and acidic solutions.
& Ge; about 40 thickness: cold rolled 2B plate (0.09 & mdash; 0mm); hot rolled industrial plate No.1 (3-50mm) medium plate, chemical plate and high temperature plate; width: 5mm --- 850mm steel strip; 1000 1211250, 1500 1800 and 2000mm coil plate and flat plate surface: 2B smooth surface, No.1 industrial surface, BA (6K) mirror, 8K mirror, 9K mirror, wire drawing surface and frosted surface.
The surface of the steel strip in the state of supply shall be rough or bright.
The length of tungsten electrode protruding from the gas nozzle is preferably 4 ~ 5mm. In places with poor shielding such as fillet welding, it is 2 ~ 3mm, and in places with deep groove, it is 5 ~ 6mm. The distance from the nozzle to the working is generally no more than 5mm.
Total quality assurance.
Model 321 & mdash; Except that the risk of weld corrosion of the material is reduced due to the addition of titanium, other properties are similar. Stainless steel decorative pipe, 201 stainless steel pipe, 400 series stainless steel pipe & mdash; Ferritic and martensitic stainless steel model 408 & mdash; Good heat resistance,Stainless steel strip, weak corrosion resistance, 11% Cr, 8% Ni.
The competition in stainless steel pipe industry is fierce and gradually intensified. With the flood of fresh brand blood and the downturn of market economy, the development of stainless steel pipe manufacturers is faltering. However, it can be seen from some relevant data that the overall market potential is still great. Stainless steel pipe connection manufacturers should know how to proceed step by step and make steady progress in order to have a chance to win the market.
.If packing is not required,0.02mm stainless steel strip, it shall be indicated in the contract and will not bear the problem of scratching and scratching the surface of stainless steel pipe due to opening the packing bag.
Fabrication of stainless steel pipe
According to the purpose, it is mainly divided into oil well pipe (casing, oil pipe and drill pipe), pipeline pipe, boiler pipe, mechanical structure pipe, hydraulic prop pipe, gas cylinder pipe, geological pipe, chemical pipe (high-pressure fertilizer pipe, petroleum cracking pipe) and marine pipe. Calculation formula for weight of stainless steel square tube: (nozzle perimeter 14 - actual thickness) actual thickness is 0.02491, of which 0.02491 is a constant converted from stainless steel density.