16 Mn Ann in zai

preface: Q: 16 Mn this material is reflected in which standard, this material name is not cancelled. answer: In the current standard, structural steel GBT 1591 has grade Q355 and steel NBT 47008 for pressure equipment has 16 Mn.

ASTM A262 E Intercrystalline corrosion test and sensitization requirements

Is it mandatory to make 316L ultra-low carbon material sensitization by ASTM G262 E method

Clip bead

preface: Q: Have you ever encountered this defect, and what kind of defect is it. What causes this and what way can avoid it. submerge-arc welding. answer: Clip bead. abstract: Welding article.hidden but beautiful spot.

Argon arc welding protective gas to oxygen

Overview of unmolten tungsten-inert gas protection arc welding; compared with other common welding methods, the filling arc welding (if not marked, used below: argon arc welding, replacement) is not energized, and good welding formation can be obtained. Because the welding current of argon arc welding is small, the welding heat input is small, and the residence time of the weld in the sensitive temperature area is short during welding, so the weld usually has better corrosion resistance and stable mechanical properties. At the same time, due to the heat input is small, the deformation caused by welding is small.

Technical exchange

Professor you do not be excited, please believe that I am not trying to express this view in the book, nor do I come to argue with you right or wrong, just on this basis to provide some information for you and other participants for reference. The above description itself is not at fault, and it is appropriate to use this topic to describe the history or to construct a relatively complete theoretical system. If used to describe the applied technology for current use, it may make the new exposure to the industry even more confused.

Technical exchange

Jinwei Technical Service Co., Ltd. was established in Tianjin TEDA in 2011. The company has more than 12 years of experience in quality inspection and testing and technical advantages, mainly engaged in quality control, non-destructive testing, professional training and other technical services in land and ocean engineering. The company has more than 70 employees, including nondestructive inspectors (with ASNT, PCN, CSWIP, CCS, DNV and secondary / tertiary certificates issued by China Special Equipment Inspection Association), QA / QC inspectors (with CWI, CSWIP, NACE certificates) and electrical / mechanical inspectors