LSAW Steel Pipe Insulatoin Corrosion Performance Advantages

Applying insulation corrosion process on LSAW Steel Pipe is to slow down or prevent the chemical out of the media so as to ensure the steel pipes can be applied in different environment
condition for a certain period of time.


LSAW Steel Pipe insulation corrosion performance advantages are as below:

1. Good insulation properties. The heat loss is only 25% of the traditional double submerged arc welded pipe. In the long run, it can save a lot of energy, reduce energy costs significantly.

2. Highly waterproof and corrosion resistance. The insulation corrosion LSAW Steel Pipe can be directly buried in the ground or water without attached trench. It is simple and rapid
construction, and also low total cost.

3. Double submerged arc welded pipe still have good corrosion resistance and impact resistance at low temperatures. It can be directly buried permafrost.

4. The application life time can up to 30 to 50 years. Proper installation an use can double submerged arc welded pipe maintenance cost low.
5. It is allow to set alarm system. It is allowed to realize the leakage fault detection and accurate fault location and automatic alarm indication.
 

Insulation corrosion process on LSAW Steel Pipe

Applying insulation corrosion process on LSAW Steel Pipe is to slow down or prevent the chemical out of the media so as to ensure the steel pipes can be applied in different environment condition for a certain period of time.

LSAW Steel Pipe insulation corrosion performance advantages are as below:

1. Good insulation properties. The heat loss is only 25% of the traditional double submerged arc welded pipe. In the long run, it can save a lot of energy, reduce energy costs significantly.

2. Highly waterproof and corrosion resistance. The insulation corrosion LSAW Steel Pipe can be directly buried in the ground or water without attached trench. It is simple and rapid construction, and also low total cost.

3. Double submerged arc welded pipe still have good corrosion resistance and impact resistance at low temperatures. It can be directly buried permafrost.

4. The application life time can up to 30 to 50 years. Proper installation an use can double submerged arc welded pipe maintenance cost low.

5. It is allow to set alarm system. It is allowed to realize the leakage fault detection and accurate fault location and automatic alarm indication.

High Pressure Boiler Pipe Rust Remove

There are different methods to remove rust for the high pressure boiler pipe:

1. Cleaning
Using solvent, emulsion to clean the surface of high pressure boiler pipe so as to achieve the removal of oil, grease, dust, lubricants and similar organic matter. However, this cleaning process can not remove the high pressure boiler pipe surface rust, scale, welding flux, etc. Therefore, the cleaning process is only a adjust process for anti-corrosion processing.

2. Remove Rust by Tools
Use a wire brush and other tools for high pressure boiler pipe surface polished. It can be removed loose or tilt of the oxide scale, rust, welding slag. Hand tools rust can reach SA2 level, power tools rust can be achieved SA3 level. If the high pressure boiler pipe attached to a solid surface oxide skin, tools rust effect is not ideal. This method can not meet the anti-corrosion construction requirements.

3. Pickling
General use two methods to do chemical and electrolytic pickling. Chemical pickling applied on pipeline corrosion can descaling rust, old coatings, and sometimes used as a sand-blasting after re-processing. Although using chemical pickling can clean the surface and to reach a certain cleanliness roughness, but it is easy to pollute the environment.

4. Spray Radio Rust/Throwing Radio Rust
Spray radio rust is driven spray shot by high-power and high-speed rotating blade motor. Under the steel pipe surface spray radio processing, the grit, sheet shot, wire segments, minerals are under the centrifugal force. This process can not only completely remove rust, oxides and dirt, but also can achieve the required uniform roughness due to the influence of high pressure boiler pipe severe abrasive impact and friction force. After the spray radio rust, it can expand the physical adsorption of the steel pipe surface, but also can enhance the mechanical adhesion of the coating and the surface of the steel pipe. Therefore, spray radio rust is an ideal method for pipeline corrosion. Generally, blasting is mainly used for high pressure boiler pipe surface treatment and for the outer surface of the tube processing. Use spray radio rust should pay attention to several issues.

With the development of economy, long distance oil and gas pipeline is an very important liquid transportation method. While in the oil and gas pipeline area, the pipeline corrosion construction process is the key to ensure energy security in the oil and gas industry. For high pressure boiler pipe, the surface rust is one reasons affect the steel pipe application time. Rust removing method can ensure the quality of the steel pipe surface, based on the same equipment, rust removing can greatly improving the level of technology and reduce production costs.

90% of your daily attention are wasted on trivial

For those people who do not have enough resource, the only thing they could to is to gather the resources they have (time, energy, money and the courage) and bet on one thing they love. Strive to do the best and achieve an ultimate goal. However, half-hearted and indecisive are taboo. 

Many people have told me they have a lot of hobbies or many goals to achieve in their career life, they would love to take the challenge and try different jobs, but not proficient. In the end, they do not even know which career path to go, and finding a job became troublesome eventually.

In fact, everyone has limited resources (time, money, energy etc.), if you do not focus on one thing, you may be stuck in the “slow start of” phase forever. You just switch from the slow start phase in Job A to the slow start phase in Job B, and then Job C and D...However, you will never get into the quickly upgraded phase in one Job, not even to reach the plateau phase. Before entered into the quickly upgraded phase, you already switched into another new job you would like to challenge. In the end, only small group of people climbed on the quickly upgraded phase, and only a handful of people can reach the plateau phase. 

The consequences of stuck on the slow start phase is have to compete with a lot of employees for a relatively entrance job. Due to the harsh competition, you have to low down your salary to maintain this job for making living. In the real world, the distribution of wealth is extremely uneven. Those people who standing on the top of the tower occupy most of the world’s wealth. Even the in the area which people making money by their ability and talent, this imbalance is also very obvious. Below figure is the NBA player’s salary distribution in 2014-2015 season (the horizontal axis represents the player’s salary ranking, the vertical axis is the amount of the annual salary). 

For those basketball players in the NBA, they already have better skills than the players not in the NBA. However, most of NAB basketball players are still very poor. Now, you could imagine the income for lower level league basketball players.

This is not just happened in the professional sports industry. In most of areas of the job market, this pattern of income distribution prevalent. Although the specific shape is not exactly the same, the trend towards similar.

So if we combined the above two figures, we could see such a cruel result:

Kick the tires is very likely to be nothing, and focused investment on your career will obtain excess returns in the end. If your resources poor, then focus on doing one thing will be your only way out. Each of us has very limited attention everyday, so pay attention on one pile of things will surely ignore another bunch of things. Unfortunately, 90% of our attention are put on useless trivial. People’s attention is limited, so how can we use our attention wisely?

1. Start to plan and focus on the moment.
The reason why singers or movie starts do not worry about forgetting anything is because their assistant will help them take care of everything with a 24 hours plan everyday. The role of assistant is to help the singers or movie starts to focus on the most important moment---the present. For singers and movie starts, there is no need to worry about time and work schedule. We can not afford a assistant, but we can do our own assistant by short notes and daily, weekly, and even monthly plan.
----All maters shall be noted in one place
----Put all do things down after develop a To Do List
----Check your notes or to do list frequently
----Do not blindly imitate others when planning the program. Everyone is not the same individual. In order to achieve the best results, making the plan according to your own time, energy and customize preferences.

Making plans can bring us sense of security. We are always afraid of the unknown and uncertain things. We are afraid of our own money and energy, so we must always look at the progress in order to feel at ease, like playing the progress bar of the same game.

2. Never let the phone interrupt you.
Choose a suitable time, cut off contact with the outside world and focus on the tasks you need to finish.

The reason why many people feel that their lives always in a state of loads of information, because they got the wrong understanding of science and technology. The emergence of the mobile phone is not ready to let others find you, but let others find you when you want them.

3. Learn to choose.
You must know which things are the most important and you have to do by yourself, and which things are acceptable to be done by others.

4. Set a work area, only work here.
Neurologist Oliver Sacks suggested that if you want to accomplish two different projects completely on the same table, the table would be partitioned into two regions, doing different jobs in different regions. This is because entering a new space allows the brain to restart, thus ensuring unlimited creativity.

5. Only concerned about your life, only concerned the most important thing in your life.
People’s energy is limited, if you worry too much things, stick on 2 or 3 pieces and give up the rest. This include not only give up some of the work and life goals, even including your long standing habits and even some of your personal connections. Please remember, you are making choices for yourself in life.

90% of your daily attention are wasted on trivial, so pay attention on the most important thing is very significant in our life, our career and our business. Shinestar Holdings Group has dedicated in the steel industry over 23 years, we are proud to serve our clients with professionalism all over the world. As the trading subsidiary under Shinestar Holdings Group, Prime Steel Pipe is the export gateway for our manufactured steel pipes. Our main products including carbon steel seamless pipe, welded pipe, galvanized steel pipe, coated steel pipe, and steel pipe fittings. 

ERW Steel Pipe vs. UOE Steel Pipe

ERW Steel Pipe is different from UOE Steel Pipe, the difference are as follows:

1. The Raw Materials and Production Capacity Difference
The material for producing ERW Steel Pipe is hot-rolled coil or strips, while for producing UOE Steel Pipe we use hot-rolled steel. Therefore, ERW Steel Pipe can achieve a continuous pipeline operations, high production efficiency, low production costs. For UOE Steel Pipe, it can not achieve a continuous pipeline operations, low productivity, high production cost. The maximum thickness for ERW Steel Pipe can reach 25mm, and the maximum outside diameter for ERW Steel Pipe can achieve 660mm. However, the maximum wall thickness for UOE Steel Pipe is 40mm, and the maximum production outside diameter is limited by the width of the steel sheet, in current day, the maximum production outside diameter for UOE Steel Pipe is 1422mm.

2. Welding Difference
Compared with UOE Steel Pipe, one of the advantages of ERW Steel Pipe is that there is no need to have additional wire during the welding process.

3. Appearance Difference
During the production process, ERW Steel Pipe requires inside and outside welds remove, so it has a anti-corrosive advantages compared with UOE Steel Pipe.

4. Application Difference
ERW Steel Pipe is mainly applied in natural gas, refined oil, crude oil, pulp and other terrestrial long-distance pipelines. UOE steel pipes are mainly used in high-voltage submarine long-distance pipelines, alpine area, land two/three/four types of areas.

LSAW Steel Pipe: Hydrogen Induced Cracking Mechanism

LSAW Steel Pipe: Hydrogen Induced Cracking Mechanism

1. Sources of hydrogen
Hydrogen came from the LSAW Steel Pipe micro crack, inside the battery cathode process. Atomic hydrogen is a product of the cathodic reaction, they would diffuse inside the metal pipe. Hydrogen Induced Cracking (HIC) pipe corrosion reactions occur far beyond the rolling offered, welding, cathodic hydrogen charging process which leads to excessive amounts of hydrogen within the metal. The second is the environment of hydrogen which containing media or in the corrosive environments, and industrial humid atmosphere of hydrogen induced cracking.

2. Dislocation --- Hydrogen Induced Cracking
In the LSAW Steel Pipe, hydrogen exist as a form of H, H+, H, H2, metal hydrides, solid solution, hydrocarbons, and air mass. The distribution of hydrogen is not uniform, but also irregular. Its main enrichment in the pipe stress concentration dislocations, micro-cracks and other cutting edge defects, and to tensile stress concentration at the diffusion. In the actual use, the pipe
base material can exist a large number of crystal dislocation, with the external force is generated or moved, and with the change of external conditions change. Dislocation and hydrogen induced cracking are closely linked, most common dissolved hydrogen interference to dislocation glide described hydrogen induced cracking phenomenon. Under certain stress conditions, in-service pipe crystal dislocation slip. When the rate of diffusion within a certain range of temperature and strain rate of a hydrogen atom and the dislocation velocity adapt hydrogen
group with dislocation motion and movement, but some distance behind.

Only under certain conditions, environment factors, and the role of external forces, can create continuous generation of new dislocations. Therefore, the plastic deformation continuously carried out in the new generation of new dislocations hydrogen groups. When moving dislocation with obstacles, they formed dislocations and hydrogen buildup phenomenon under enough
stress which lead to pipe cracks and pipe cracks extended. When the crack grew into a hydrogen-depleted region, the movement of dislocations and restore freedom to make pipe parent or matrix. Therefore, the stress relaxation by plastic deformation, crack stop expansion at this time. Until the hydrogen atoms under stress again after this build up, the crack extended only continue to grow. This cycle, can cause a section of the crack extended forward, finally resulting in brittle fracture.

3. Hydride --- Hydrogen Induced Cracking
In the LSAW Steel Pipe Hydrogen Induced Cracking, the mainly reason is because the post-atomic hydrogen diffuses into the pipe to form the corresponding cause of brittle hydrides. Form Hydrides, hydrogen induced cracking impact will be as flaky hydride has greater sensitivity, since such hydrides prone to stress concentration.

One feature of pipe Hydrogen Induced Cracking is having hydrogen-induced cracking susceptibility. When the pipes under certain stress, the cracks will appeared a lag time. Therefore, the LSAW Steel Pipe hydrogen induced cracking will appear after a period of time after the occurrence. The lag time is not relevant to the stress applied on the pipe, but with the increase of hydrogen concentration in the pipe, the lag time will be shorter. Lag time indicates hydrogen diffusion into the core region near the crack, and the time to reach the desired concentration of hydrogen cracking required.

4. Sulfide Rupture
During the application of LSAW Steel Pipe, some pipes will be in contact with water which containing H2S often. In such conditions, when the initial crack formed under the stress and the media together, the crack will continue to expand. In practice, it is very difficult to distinguish hydrogen induced cracking and stress corrosion cracking. The solution The solution of hydrogen sulfide in pipe cracking, hydrogen induced cracking is a major cause. As in a relatively short period of time, it occurred hours or days by hydrogen induced cracking. Just a little slight corrosion, will produce hydrogen and formation, prompting a large number of hydrogen atoms adsorbed on the surface of the pipe so that the pipe is formed on the surface of a larger hydrogen atom concentration gradient accelerating the diffusion of hydrogen into the interior of the pipe. H2S caused by pipe rupture often referred sulfide rupture.

Conclusion:
From LSAW Steel Pipe hydrogen induced cracking mechanism of view, no matter how caused by hydrogen induced cracking, it has the same characteristics which is mostly inter-granular fracture surface cracking. From the mouth of the fracture surface, the hydrogen induced cracking and stress corrosion cracking is very similar to the straight seam on LSAW Steel Pipe during the pipe application. However, it is able to distinguish the difference by certain method. Cathodic polarization control stress corrosion, but it makes the hydrogen evolution reaction is accelerated, promoting hydrogen damage. The anodic polarization, can promote the anodic dissolution process, the stress corrosion cracking acceleration, it HIC no significant impact.