Steel Works is the main structure of steel production, is one of the main building structure types. Steel testing standards: steel grid. Welds steel truss Steel Works Ltd., ultrasonic flaw detection method can detect the attic steel production, testing and evaluation of the operation should be "welded spherical joints steel truss weld ultrasonic testing and quality grading" JG / T3034. or request a "bolt-node steel truss weld ultrasonic testing and quality grading" JG / T3034.2 be. Steel Works is the main structure of steel production, is one of the main building structure types. Steel testing standards: steel grid. Solder balls, ball screws, high strength bolts and rods deviation detection, detection method and deviations should be required to allow the value of "grid structure Engineering Quality Inspection and Evaluation Standards" JGJ78 implemented. Steel Welding Technology | Steel | Steel provided by Prudential Prudential Steel Works Ltd., Henan. Henan Prudential Steel Works Ltd. (www.ayhfgc.com) strong, credible, and other industries in other Anyang accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Prudential Steel and you hand into the brilliant, for a better future!