GH/T 1257-2019 in English

VALID

Quality Grading Criteria of Raw Fox Skins

Issued on:2019-05-21
Implemented on:2019-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $210.00
$204.00

Standard No:	GH/T 1257-2019
Document status:	VALID
Title in English:	Quality Grading Criteria of Raw Fox Skins
Title in Chinese:	生狐皮质量检验
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-05-21
Implemented on:	2019-12-01
Chinese Classification:	Y46-Furs and leathers
Related Keywords:	raw fox fur raw fox skins introduction standard framework raw fur first-class leather good board quality blue fox
Related Topics:	quality inspection Skin living substance test biochemical test Leather + rawhide quality inspection meerkat gh/t laboratory quality inspection toad skin test gh/t1247-2019 Biochemical test quality control rules 7T gh/t1243-2019 gh/t 1161

本标准适用于国产生狐皮的质量检验。

Introduction

Standard Framework and Technology Evolution

This standard, as a supplementary specification to the NY/T 1164 blue fox fur standard, establishes for the first time a complete quality evaluation system for raw fox fur. Compared with the 2003 version of the industry specification, eight new innovative indicators, including needle-down length ratio (3.13) and hair flexibility (3.16), have been added to reflect the refined requirements of modern fur processing for raw fur.

Analysis of core terms

Terms	Definition points	Application cases
Seasonal leather	Mature leather in winter, with complete growth of needle hair	Necessary conditions for first-class leather
Good board quality	The leather board is flexible without any defects and has sufficient oiliness	Important indicators for distinguishing tangerine peel
Flexible hair	The characteristic of rapid recovery after shaking	Detecting the health of hair follicles

Key points for implementing the grading standards

First-class leather judgment standards

Must meet the following requirements: seasonal leather, needle hair coverage ≥ 90%, down density ≥ 1500 hairs/cm², and the leather is white and flawless. Typical example: silver fox leather collected in Northeast China from December to January.

Principles for handling damaged skin

Secondary parts: single hole ≤2cm is allowed
Main parts: any tracer injury is prohibited
Urine yellow determination: downgrade if the contaminated area exceeds 10%

Suggestions for optimizing inspection methods

The "three-step inspection method" is recommended:

Preliminary inspection: check the integrity of the leather shape while measuring the size
Hair inspection: measure the needle hair density ratio according to method 4.6.1
Plate inspection: detect skin plate damage by strong light transmission method (refer to QB/T 1263)

Note: In winter, the room temperature must be kept above 15℃ to preventRaw fox skin The board becomes hard and affects the judgment

More samples: JJG 21-2008 JGJ 94-2008 GB 50021-2001(2009)

Sample only — not a preview of GH/T 1257-2019