Physics would tell us that degree of agitation have influence for galvanized steel pipe. Why? Here are some details introduction for it. And it would help us to slow the corrosion for steel pipe once we know the principles for damage of the steel pipe.
Once we put the galvanized steel pipe on water, high water velocity can lead the quick erosion corrosion. Thus, here are the troubles caused by scouring of metal surfaces by turbulent water and suspended solids that removes protective scale (12, pp. 2.15, 2.16, 2.25 ; 15, p. 7220). Under this situation, we should know that water movement would have influence for the damage of galvanized steel pipe. As it would lead water aeration to support corrosion. Quickly dissolved oxygen is normal would damage the surface of steel pipe.
http://www.xysteelpipe.com/info/The-effect-of-stirring-intensity-on-galvanized-steel-pipe-894-1.htm
2018年2月22日星期四
SSAW steel pipe pressure level
A kind of SSAW steel pipe would include pipe, pipe fittings which conclude elbow, tee joint, taper pipe and so on. Like each kind of SSAW steel pipe has specific standard for it. So does for the pressure grade.
SSAW steel pipe's grade pressure would be infected by several aspects. First of all, we should consider the pipe components selecting which would be an important factor affecting the grade pressure.
Secondly, we should make sure the certain pressure, temperature during the whole production process. Thus, the SSAW steel pipe's grade can be controlled by manufacturer.
In addition, the technological process would be another one factor for it too.
http://www.xysteelpipe.com/info/SSAW-steel-pipe-pressure-level-895-1.htm
SSAW steel pipe's grade pressure would be infected by several aspects. First of all, we should consider the pipe components selecting which would be an important factor affecting the grade pressure.
Secondly, we should make sure the certain pressure, temperature during the whole production process. Thus, the SSAW steel pipe's grade can be controlled by manufacturer.
In addition, the technological process would be another one factor for it too.
http://www.xysteelpipe.com/info/SSAW-steel-pipe-pressure-level-895-1.htm
Determination of the coefficient of seamless steel pipe
Have you ever thought about the main percentage of each main steel pipe from seamless steel pipe and welded pipe? Even for seamless steel pipe, there are different categories and what’s the main percentage of use for seamless steel pipe? Today, we can have a view for the determination of coefficient for seamless steel pipe.
Steel pipes can be classified into two general categories because of the different method for manufacture-seamless and welded. We would say that the crack would be the basic difference for them. Each category can be further subdivided by grade and standard of steel: carbon, stainless, alloy, heat-resisting and so on.
Actually, we can get that seamless steel pipe may have big market in some special area like:
First of all, when talking about the strong steel pipe. First choice would be seamless as there is no crack in the whole production which determines that seamless steel pipe would have a better pressure taking than welded pipe.
What’s more, strength would be another factor. And the reason would be similar for seamless steel pipe and welded pipe.
http://www.xysteelpipe.com/info/Determination-of-the-coefficient-of-seamless-steel-pipe-896-1.htm
Steel pipes can be classified into two general categories because of the different method for manufacture-seamless and welded. We would say that the crack would be the basic difference for them. Each category can be further subdivided by grade and standard of steel: carbon, stainless, alloy, heat-resisting and so on.
Actually, we can get that seamless steel pipe may have big market in some special area like:
First of all, when talking about the strong steel pipe. First choice would be seamless as there is no crack in the whole production which determines that seamless steel pipe would have a better pressure taking than welded pipe.
What’s more, strength would be another factor. And the reason would be similar for seamless steel pipe and welded pipe.
http://www.xysteelpipe.com/info/Determination-of-the-coefficient-of-seamless-steel-pipe-896-1.htm
2018年2月8日星期四
SSAW steel tube wall thickness control
Spiral Submerged- Arc Welded Steel Pipe (SSAW steel pipe) is used for low pressure liquid delivery, such as water, gas, and oil; construction and piling. And there is a long mark in it so that we should pay high attention to the wall thickness control during the whole production process.
First of all, pipe heating would be discussed here. Different types and different standard for the steel pipe would have various heating requirements. For SSAW steel pipe, heating to the average is just in order to prevent rapid up and down temperature so that to get the high quality pipes.
Secondly, original material choosing. We should figure out that average wall thickness of thick wall pipe and solid billet make the probability of mandrel bending deformation significantly reduced, can effectively improve the wall thickness of the precision. So does for the SSAW steel pipe even there is a crack treatment.
What's more, the perfect production process would another important factor for high quality of SSAW steel pipe.
http://www.xysteelpipe.com/info/Wall-thickness-control-of-SSAW-steel-pipe-888-1.htm
First of all, pipe heating would be discussed here. Different types and different standard for the steel pipe would have various heating requirements. For SSAW steel pipe, heating to the average is just in order to prevent rapid up and down temperature so that to get the high quality pipes.
Secondly, original material choosing. We should figure out that average wall thickness of thick wall pipe and solid billet make the probability of mandrel bending deformation significantly reduced, can effectively improve the wall thickness of the precision. So does for the SSAW steel pipe even there is a crack treatment.
What's more, the perfect production process would another important factor for high quality of SSAW steel pipe.
http://www.xysteelpipe.com/info/Wall-thickness-control-of-SSAW-steel-pipe-888-1.htm
Types of seamless steel pipe cutting
The main methods of seamless steel pipe cutting is cutting machine, flame cut, sawing and so on. The features of its pipe cutting equipment are described below.
(1) Pipe cutting machine
Pipe cutting machine equipment is simple, less investment, more widely used, and some also have the function of down-groove and automatic loading and unloading materials and aggregate devices. Pipe cutting machine is seamless pipe finishing line commonly used equipment.
(2) Cutting saws
It can be divided into pipe saws, band saws and disc saws and other forms. Pipe saws can be cut into multiple rows at a time in a row of steel pipe, high production efficiency, but the complex structure of the equipment, high investment; band saw and disc saw less efficient and less investment. Circular saw is suitable for cutting off the pipe with smaller outer diameter, while the band saw is used to cut off the pipe with larger outer diameter.
(3) Flame cut off
Flame cutting, including oxygen cutting, hydrogen cutting and plasma cutting, etc., the cutting method is more suitable for large diameter pipe wall thickness of the seamless steel pipe cutting. Plasma cutting, cutting faster. Due to the high temperature at flame cutting, there is a heat affected zone near the cut and the port surface is not smooth.
(4) Machine cut off
This cut off the low efficiency, generally used for sampling and sample preparation.
http://www.xysteelpipe.com/info/Types-of-seamless-steel-pipe-cutting-887-1.htm
(1) Pipe cutting machine
Pipe cutting machine equipment is simple, less investment, more widely used, and some also have the function of down-groove and automatic loading and unloading materials and aggregate devices. Pipe cutting machine is seamless pipe finishing line commonly used equipment.
(2) Cutting saws
It can be divided into pipe saws, band saws and disc saws and other forms. Pipe saws can be cut into multiple rows at a time in a row of steel pipe, high production efficiency, but the complex structure of the equipment, high investment; band saw and disc saw less efficient and less investment. Circular saw is suitable for cutting off the pipe with smaller outer diameter, while the band saw is used to cut off the pipe with larger outer diameter.
(3) Flame cut off
Flame cutting, including oxygen cutting, hydrogen cutting and plasma cutting, etc., the cutting method is more suitable for large diameter pipe wall thickness of the seamless steel pipe cutting. Plasma cutting, cutting faster. Due to the high temperature at flame cutting, there is a heat affected zone near the cut and the port surface is not smooth.
(4) Machine cut off
This cut off the low efficiency, generally used for sampling and sample preparation.
http://www.xysteelpipe.com/info/Types-of-seamless-steel-pipe-cutting-887-1.htm
订阅：
博文 (Atom)