What kind of material is L245 spiral steel pipe?

　　L245 spiral steel pipe is made of strip steel with material L245. The standard is API SPEC. L245 spiral steel pipe is mainly used for gas, water and oil transportation in natural gas industry. What are the characteristics of this material?

　　L245 is a low-pressure fluid coiled tube with the same performance as the #20 seamless tube.

　　Mechanical properties and chemical composition of L245

　　Mechanical properties:

　　Yield strength: 245 MPa

　　Tensile strength: 415 MPa

　　Chemical composition: C: 0.26 Mn: 1.15 S : not more than 0.030 P: not more than 0.030

　　If the mark is N in the L245NB, the steel that is L245 is deformed and normalized. B means grade B steel pipe.

评论

发表评论

此博客中的热门博文

What is a Casing Pipe?

　　Oil casing pipes, also known as production casings. It is the last layer of casing in the oil and gas well casing process, from the wellhead down to below the oil and gas layer. 　　The depth of the casing casing is basically the depth of the well. 　　The function of the oil casing is the passage of oil and gas to the ground, which isolates the oil and gas from the entire formation to ensure that the oil and gas pressure does not leak. After the oil and gas wells are transferred into production, the quality of the oil casings must be guaranteed to maintain a certain number of years of exploitation. 　　The cementing quality of the oil casing is related to the exploration well, which is the key to oil and gas testing. On the other hand, it is related to the production well, which directly affects the life of the well.The cement sealing height between the oil casing and the borehole wall is at least 500 m above the oil and gas layer or 200 m above the upper casing. 　　The main differ...
阅读全文

ASTM A179 Cold Drawn Seamless Steel Pipe

　　 A179 seamless steel pipe is widely used in industries such as petroleum, chemical, medical, food, light industry, machinery, instrument, include industrial pipeline and mechanical structure parts, etc. 　　This is an effective way of metal corrosion, the use of the main features are the following: 　　1. ASTM A179 cold drawn seamless pipe manufacturers with thick dense dense zinc layer covered in the cold drawn seamless tube surface, it can avoid cold drawn seamless tube matrix and any contact with the corrosion solution to protect the steel matrix from corrosion. In the general atmosphere, the surface of the zinc layer to form a layer of thin and dense zinc oxide surface, it is difficult to dissolve in water, so the steel matrix plays a protective role. If zinc oxide and other components of the atmosphere produce insoluble zinc salt, the anti-corrosion effect is more desirable. 　　2. With iron - zinc alloy layer, combined with dense, and with the unique anti-corrosion in the mari...
阅读全文

ASTM A556 Superheater Steel Tube

　　ASTM A556 Standard Specification is for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes. 　　ASTM A556 is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 　　Scope: 　　1. This specification 2 covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, if specified, for use in tubular feedwater heaters. 　　2. The tubing sizes covered shall be 5/8-11/4 inch (15.9-31.8mm) outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 inches. 　　 Chemistry Composition Grade C % Si % Mn % P % S % B2 0.27 max 0.10 min 0.29-0.93 0....
阅读全文