Identification of steel pipe materials fracture

Chemical composition of different steel pipe materials, the fracture characteristics also varies. The fracture characteristics observed by the naked eye. Steel materials can be identified in general, this method is called fracture identification method.
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High and low pressure seamless tube for boiler production process

Seamless tube for boiler is a boiler, are seamless categories, seamless steel pipe manufacturing methods and the same, but used in the manufacture of steel pipe, there are strict requirements. Boiler seamless pipe used often in conditions of high temperature and high pressure, high temperature gas and water vapor in the tube under the action of Oxidation and corrosion will occur. Requires durable steel with high strength, high corrosion resistance to oxidation and have good organizational stability. Boiler seamless pipe is mainly used to manufacture high pressure and high pressure boiler superheater tubes, reheater tubes, seamless boiler gas guide tubes, main steam pipe and so on.

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Stability of spiral steel pipe thermal fatigue

Spiral steel pipe in the proportion in recent years, stable at 42% to 45%, the pipe on the rise. Spiral welded steel pipe compared with the reliability of materials and adaptable species, especially adapted to the production of thick steel and alloy steel.
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What is API 5L?

Generally API 5L refers toAPI 5L line pipe,which is out of the ground the oil, gas, water, transported by pipeline to pipe oil and gas industry companies.

API SPEC 5L-2011 (line pipe specification), the American Petroleum Institute prepared and published, in the common parts of the world.

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The manufaturing standard and application of LASW steel pipe

Consumption, high efficiency, welded steel pipe consumption process is simple. Types of specifications, equipment investment, but the average strength of less than seamless. Over the years, with the consumption of high-quality moving rapidly to carry out strip rolling and welding and inspection technology, advances from time to time weld quality, welded steel pipe increasing the types of specifications, and more and more areas in a seamless replacement. Press LSAW steel pipe and spiral welded pipe is divided into Longitudinal. Longitudinal simple consumer technology, consumption and high efficiency, low interest rates, to carry out fast. The strength of spiral steel pipe common than straight seam high, can narrow the larger diameter pipe billet consumption, but also the width of the blank with the same consumption of different diameter pipe. But with the same length of straight seam pipe compared to the weld length of 30 to 100% and the consumption rate is low. Thus, the smaller diameter pipe actually use straight seam steel pipe, large diameter spiral welded pipe is mostly used.
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Characteristics and use of flexible composite high-pressure transporting pipe

New type of flexible composite high-pressure pipeline has successfully developed and put on the market. Performance is much better than traditionalsteel and glass, the application potential.

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The derusting method method of ERW steel pipe

In the oil and gas pipeline corrosion in the construction process, straight seam steel pipe anti-corrosion surface treatment is to determine the life of one of the key factors, it is ERW steel pipe coating with the premise of whether the combined firm. The study of professional organizations, in addition to the life of the coating depends on coating type, coating quality and construction of environmental factors, ERW steel pipe coating surface treatment of life-span of about 50%, therefore, should be strictly in accordance with corrosion layer specification for ERW steel pipe surface, continually improve the surface treatment straight seam steel pipe, ERW steel pipe in addition to embroidery methods are mainly the following:

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How to identify the quality of spiral steel pipe?

Spiral steel pipe used in the production and often there will be some quality problems, in some respects that affect the normal use, the need for the identification of quality spiral steel pipe, according to certain methods and performance testing, can have important practical use in the role, then how to identify counterfeit spiral steel pipe approach: the appearance of the phenomenon often Pock. Generally speaking, commensurate with the amount of whole would be better, mainly taking into account the accumulated error and probability theory this problem. Any inadequacies in the above points please add, we welcome the knowledge to discuss the steel in the continuous exchange in progress. Ma rolling groove surface is due to severe wear and tear caused by uneven irregular spiral steel pipe surface defects. Spiral steel pipe manufacturers as inferior to the pursuit of profit, most often excessive rolling rolling groove. Easy to produce surface scarring.

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Spiral steel pipe experiment inspection

From the welding process, the spiral seam steel pipe and welding straight line, but inevitably there will be a lot of Longitudinal T-weld, so the probability of the existence of welding defects has greatly improved, and T-welds the weld large residual stress, weld metal are often in three dimensional stress state, increasing the possibility of cracks.

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How to install pump spiral pipe?

With the continuous progress of science and technology and market demand. Pump Bu original rubber hose used has been eliminated. Instead, high quality, low cost, light weight plastic spiral. Buy a new spiral pipe diameter and pump size connector is very close, so security is more difficult to access. Many users use the water hot, with fire, but the right way is difficult to work. There is an effective way: first to take to a 1 kg bags filled with empty bottles of pesticides in the bottle top coated with oil or butter, then hand always has rotating spiral roasted on the fire burn until the spiral grill soft, coated with a lubricant to the glass inside the coil support (depending on the depth of the pump connector length of stay may be), then remove the glass, then into the pump connector On cooling coil plastic spiral soon after the contraction, this pump connector was firmly wrapped in a spiral, even when not on the package will not take off the hoop.

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