4.4　Standard Fasteners for Connection

Ⅰ　Dominant Items

4.4.1　The type，specification and performance of standard fasteners and fittings for the connection of structure for mobile communication steel tower and mast（including standard set of high-strength bolt，ordinary bolt，mechanical-type or chemical-reagent-type anchor bolt，sill anchor and other standard fasteners，as well as nut，gasket and other standard fittings）shall be in conformity with the current national standards of such products and the design requirements.

Quantity for inspection:inspect all lots and specifications；

Inspection method:inspect the quality certificates and other such documentary evidences of quality，Chinese identification marks，test reports and others.

4.4.2　High-strength bolts of Grade 8.8 and above are subject to randomly re-inspect on tensile strength，yield strength and specific elongation；their re-inspection results shall be in conformity with the current state standards of such products and the design requirements.

Quantity for inspection:inspect randomly 8 sets of each lot；

Inspection method:Check the re-inspection report.