Effect of humidity and temperature on corrosion of GB 05CuPCrNi Chinese steel grade

Pipeline steel plate API 5L Gr.B, , X42, X46, X52, X56, X60, X65, X70, X80 is a key steel material for manufacturing straight-seam submerged arc welded pipe for high-pressure long-distance natural gas pipeline X80 pipeline steel is currently the highest-grade pipeline steel in engineering application in the world The our company produced X80 pipeline steel plates are successfully used in natural gas pipeline project with the largest wall thickness and diameter,GB 05CuPCrNi Chinese steel grade.GB 05CuPCrNi Chinese steel grade,The company is based on the principle of good faith, small profits and quick sales, and keeps forging ahead. In the fierce market competition, with good cooperation and sincere service spirit, we win the trust of our customers and develop rapidly. We will create a win-win situation with our customers and create a better future with the belief of pioneering, pursuing excellence and learning.GB 05CuPCrNi Chinese steel grade,The preparation of galvanized steel before welding is the same as that of ordinary low-carbon steel. It is necessary to carefully handle the groove size and nearby galvanized layer. In order to achieve penetration, the groove size shall be appropriate, generally 60 ~ 65 °, with a certain gap, generally 1.5 ~ 2.5mm; in order to reduce the penetration of zinc into the weld, the galvanized layer in the groove can be removed before welding. In the practical work, the centralized beveling, no blunt edge technology for centralized control, two-layer welding process, reducing the possibility of incomplete penetration.
GB 05CuPCrNi Chinese steel gradeGB 05CuPCrNi Chinese steel grade,A small amount of Nb is sufficient to obtain excellent comprehensive properties of steel material, because at low Nb concentration, the yield strength of steel material increases faster and is proportional to the concentration, but when the Nb content is greater than 0.03%, the strengthening effect begins to decrease. Studies have shown that when the Nb content is greater than 0.06%, excess Nb will no longer strengthen the steel material.
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