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About product and suppliers:
        Alibaba.com offers 922 high tensile bolt grades products. About 72% of these are bolts. 

A wide variety of high tensile bolt grades options are available to you, such as free samples, paid samples. 

There are 922 high tensile bolt grades suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of high tensile bolt grades respectively. 

High tensile bolt grades products are most popular in North America, South America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 374 with ISO9001, 116 with Other, and 75 with ISO14001 certification.