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Tension Control Bolt Cconnection Pair With Steel Structure
| Standard | Size | Grade | Surface Treatment |
| EN14399-10 | M16-M30 | 10.9HRC | Black / HDG / Dacrome / Mechanical / Sheradizing |
| ASTM F1852 | 1/2"-1-1/4" | A325 TC | Black / HDG / Dacrome / Mechanical / Sheradizing |
| ASTM F2280 | 1/2"-1-1/4" | A490 TC | Black / Dacromet / Sheradizing |
| GB/T3632-2008 | M16-M30 | 10.9S | 10.9S Black / Dacromet / Sheradizing |
| JSS II09-2015 | M12-M30 | S10T | Black / HDG / Dacromet / Mechanical / Sheradizing |
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