GB/T 1797-2008 Raw silk English
1. Scope
This standard specifies the requirement , inspection regulation , packing and labeling for raw silk inskein or on cone.
This standard is applicable to the unsoaked raw silk with a nominal size of 69 denier and below.
2. Normative reference
The following normative documents contain provisions which，through reference in this text，con-stitute provisions of this standard. For dated references，subsequent amendments ( excluding cor-rections) , or revisions，of any of these publications do not apply to this standard. However partiesto agreements based on this standard are encouraged to investigate the possibility of applying themost recent editions of the normative documents indicated below. For undated references，the latestedition of the normative document referred to applies.
GB/T 1798-2008, Testing method for raw silk
3 Expression of raw silk size
Raw silk size is marked with lower and upper size limit.Thus its central value is nominal size.
EXAMPLE
a) 20/22 denier: indicates that the nominal size is 21 denier , the lower size limit is 20 denier and the upper size limit is 22 denier.
b)40/44 denier: indicates that the nominal size is 42 denier , the lower size limit is 40 denier and the upper size limit is 44 denier.
4 Requirements
4.1 The quality of raw silk is classified to grade 6A,5A,4A,3A.2A，A and Asub(below grade A)based on the results of the quality requirements and appearance evaluation.
