Application For C20 concrete and above For fixing steel structures, curtain walls, pipe supports, equipment and anchoring applications with seismic requirements Technical data Material: 40Cr steel/A2 stainless steel Surface treatment: hot-dip galvanized â?¥45um, electro-galvanized â?¥5um Product features Sleeve self-expanding bottom provides reliable key bearing capacity Suitable for cracked concrete Passed the JG/T 160 seismic S-class type inspection The matching drilling and reaming tools make on-site installation more convenient and reliable Test Mechanical test report, cracked concrete test report, seismic test report, fire resistance test report