x80 grade pipe
|Material||RONSCO,BAOSTEEL, JISCO, TISCO, Etc.|
|Outer Diameter||OD 6mm-630mm or customized|
|Thickness||0.4-30mm or customized|
631.904L.2205.2507.2520 ect. Or Customized
|Standard||GB, AISI, ASTM, ASME, EN, BS, DIN, JIS|
Decoration, construction and upholstery, etc
Each tube in a plastic bag with size label outside and pack in small bundles
or according to customer request
|Delivery Time||5-7workdays for one FCL Or according to order list detail|
|Sample||we could offer the sample for free charge but do not pay the cost of freight.|
The X80 is an American grade of high strength pipeline steel.The minimum yield value (MPa) is 551;This concept belongs to the category of material mechanics. The yield value refers to the stress value at the yield stage when the material is stretched, and the critical value from the yield stage to the stiffening stage.Its chemical properties are linked below.
Early pipeline steel has been using C, Mn, Si type of ordinary carbon steel, metallurgical side more than performance, no strict provisions on chemical composition.Since the 1960s, with the increase of oil and gas pipeline pressure and pipe diameter, low alloy high strength steel (HSLA) has been adopted, which is mainly supplied by hot rolling and normalizing.Chemical composition of such steels :C≤0.2%, alloying elements ≤ 3-5%.With the further development of pipeline steel, in the late 1960s and early 1970s, the American petroleum organization proposed three kinds of microalloy controlled rolling steel X56, X60 and X65 in API 5LX and API 5LS standards.This kind of steel breaks through the traditional concept of steel, with the carbon content of 0.1-0.14%, adding Nb, V, Ti and other alloy elements ≤0.2% in the steel, and significantly improving the mechanical properties of the steel through the controlled rolling process.In 1973 and 1985, the API standard added X70 and X80 steel successively, and then developed X100 pipeline steel, with the carbon content reduced to 0.01-0.04%, and the carbon equivalent decreased to below 0.35 correspondingly, and truly appeared the multi-element microalloy controlled rolling and controlled cooling steel in the modern sense.