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EN 10208 carbon steel pipe
（1）Seamless steel pipe or seamless steel tube for pipeline project ,oil and gas transportation （2）LSAW steel pipe or SAWL steel pipe for Gas pipeline or oil pipeline or pipe construction （3）Spiral welded steel pipe or SAWH steel pipe or SSAW steel pipe or spirally steel pipe for water sys...Read more -
Different Grades of API Steel Pipes
API steel pipe is most commonly made by using a duplex stainless steel or a grade of iron that has higher nickel content, such as a six percent of Mo material or high nickel alloys. Ferrite stainless steels are very resistant to API steel pipe but grades may vary with equivalent pitting resistanc...Read more -
Anti-corrosion surface treatment process of spiral pipe
Typically the metal surface will be accompanied by dust oxide corrosion layer of oil contaminants salt or old paint. Dense oxide layer is an oxide layer formed in the forging steel produced by high temperature, usually attached relatively firmly, but more brittle than the steel itself, and the ca...Read more -
The advantages of galvanized steel pipe
The advantages of galvanized steel pipe are following below: 1. The entire surface of the steel is to be protected, both in the inside the recess at the tube member, or any other coating is difficult to enter the corner, and solubilized zinc are easily uniform coverage. 2. Galvanized layer hardne...Read more -
Carbon steel piping passivation
Carbon steel pipe surface passivation method is the preparation of a good passivation solution at room temperature with a hair brush to the part of the steel parts need passivation, steel workpiece storage time in the ventilation to control the deposit orremoved. Steel workpiece surface generates...Read more -
ASTM A53
Standard BS 1387, BS EN 10297, BS 4568, BS EN10217, JIS G3457 Grade 10#-45#, Cr-Mo alloy, 15NiCuMoNb5, 10Cr9Mo1VNb, A53-A369 Out diameter 21.3 - 610 mm Wall thickness 2 - 50 mm Section Shape Round Application Fluid Pipe Surface Treatment varnished,cap,marking Certification API ...Read more -
Welded Steel Pipe Usages and Recommendations
Chain vises are one of the most important welding technologies and tools and they are made with jaws for holding welded steel pipe. In fact, jaws are engineered so they can provide holding power without causing any damage to the pipe. However, we should never use dry granular calcium hypochlorite...Read more -
Seamless steel pipe piercing theory
In the seamless steel pipe production, the role of the perforation process is to wear a solid hollow tube capillary. As a first step of perforated metal deformation, wear thick pipe wall thickness, length is shorter, poorer quality of inner and outer surfaces, so called capillary. If there are so...Read more -
Importance of Right Filler Metal for Welded Steel Pipe
In the welding process of large welded steel pipe, we should pay great attention to the melted region of the work piece and form a molten solder, because the melted region is the connection of cooling and solidifying the material after the pool is formed. Usually, the pressure is required by lar...Read more -
High frequency pipe manufacturing control
1.The pipe weld gap control Adjust the amount of squeezing rollers squeeze, so keep the flush weld ends, the opening angle of 7 degrees or less, the weld gap control between 1-3 mm. Weld control is too large, it may appear bad, weld cracking to produce incomplete fusion or weld control is too sma...Read more -
Comparison of high frequency induction welding with high-frequency resistance welding
High-frequency resistance welding basic principle: a pair of electrodes two leg edge contact with the tube, directly to the edge of the input frequency current tube, using high frequency current of the skin effect and proximity effect, so that the current is highly concentrated in the edge of the...Read more -
Application of Protection coating for reinforced concrete
Changes of concrete alkaline state would destroy the steel surface of the passive film, then there reinforcement the localized corrosion. Corrosion of reinforcement is reinforced concrete structure damage and one of the main causes of early failure. With domestic steel corrosion in concrete struc...Read more