BASIC INFO
Guardrail screws are an important part of the guardrail system. Its function is to fix the guardrail connector columns together. It consists of three parts: bolts, washers and nuts.
Standards
JT/T281-1995 JT/T281-2001 GB/T18226-2000 GB/T1228-2006
Level
Level 4.8, Level 8.8
Material
Generally, carbon structural steel is used, such as Q235 and No. 45 steel.
Specifications
Round head: M1635 M1650, etc.
Hexagonal head: M1640 M16150 M16*200, etc.
Surface treatment
Hot dip galvanizing, powder galvanizing, painting, etc.
Supply capacity
250 tons per month
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