JT/T 281-2007 in English

1 Scope
This standard specifies the classification, overall dimension and permissible deviation, technical requirements, test methods, inspection rules and marking, packaging, transport and quality certificate for products of corrugated sheet steel beams for guardrail.
This standard is applicable to the corrugated sheet steel beams for highway guardrail and those for urban highway guardrail may use this standard for reference.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding the corrections), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 228 Metallic Materials-Tensile Testing at Ambient Temperature (GB/T 228-2002, ISO 6892: 1998, MOD)
GB/T 232 Metallic materials-Bend Test (GB/T 232-1999, ISO 7438: 1985, EQV)
GB/T 470 Zinc Ingots (GB/T 470-1997, ISO 752:1981, EQV)
GB/T 699 Quality Carbon Structural Steels
GB/T 700 Carbon Structural Steels (GB/T 700-1988, DIN 630: 1987, NEQ)
GB/T 1231 Specifications of High Strength Bolts with Large Hexagon Head, Large Hexagon Nuts, Plain Washers for Steel Structures
GB/T 3077 Alloy Structure Steels
GB/T 6725 Cold Formed Steel Sections
GB/T 18226 Specification for Steel Components Anticorrosion of Highway Traffic Engineering Appurtenances
JT/T 495 Sampling Method and Judgment for Highway Safety Appurtenances Quality Audit
JTG/T D81 Guidelines for Design of Highway Safety Facilities
3 Product Classification and Composition

Foreword i
1 Scope
2 Normative References
3 Product Classification and Composition
4 Overall Dimension and Permissible Deviation
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Marking, Packaging, Transport and Quality Certificate
Appendix A (Normative) Test Method for Hot-galvanized Zinc Adhesion Amount (Antimony Chloride Method)
Appendix B (Normative) Test Method for Hot-Galvanized Zinc Coating Uniformity (Copper Sulfate Method)
Appendix C (Normative) Test Method for Hot-Galvanized Zinc Coating Adhesiveness (Hammering Method)