1. Tensile test of bolt: when the test tension reaches the tensile load specified in GB / t3098.1, it shall not be broken.
1. Tensile test of bolt: when the test tension reaches the tensile load specified in GB / t3098.1, it shall not be broken.
1. Tensile test of bolt: when the test tension reaches the tensile load specified in GB / t3098.1, it shall not be broken.
When cracks appear in many places of concrete structure buildings, no matter whether the cracks are serious or not, as long as the cracks are diagnosed as harmful cracks.
ow the main products include car repair gecko, wood screw, internal force gecko, chemical anchor bolt. The factory covers an area of 2800 square meters, with cold pier, rolling machine, drawing machine, drawing machine, etc.