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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 4389-2013 |
Double-headed open-ended wrenches,double-headed Box wrenches and combination wrenches - Maximum widths of heads 双头呆扳手、双头梅花扳手、两用扳手 头部外形的最大尺寸 |
China National Standards Box wrenches |
 English PDF |
| GB/T 4393-2008 |
Open end wrenches, Box wrenches and combination wrenches - Technical specifications 呆扳手、梅花扳手、两用扳手 技术规范 |
China National Standards Box wrenches |
English PDF |
| GB/T 4388-2008 |
Types of open-end wrenches, Box wrenches and combination wrenches 呆扳手、梅花扳手、两用扳手的型式 |
China National Standards Box wrenches |
English PDF |
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