This Standard specifies a method of determining the grammage of paper and board. This Standard applies to various papers and boards.

This Part of GB/T 5137 specifies the test method for the optical properties of safety glass used for road vehicles. This Part is applicable for the road vehicle safety glass (hereinafter referred to as safety glass). The safety glass includes glass products processed from all kinds of glass OR the combination of the glass and other materials.

This Part of GB/T 5137 specifies the test methods of safety glazing materials used on road vehicles - radiation, high temperature, humidity, fire and simulated weathering resistance. This Part applies to automotive safety glass. It includes those glass products which are processed by various types of safety glass or which are combined of glass and other materials.

This Standard specifies the basic principles and technical content for the drafting of occupational safety and health standards.

This standard specifies two methods for determining the chlorine content of vinyl chloride homopolymers and copolymers containing no plasticizers or additives, that is: - Method A (burning bomb); - Method B (burning bottle).

This Standard specifies the primary, secondary, and fifth sampling plans and sampling procedures based on the rejection quality level (expressed as the percentage of rejected products or the number of rejected products per hundred units) as the quality indicator. It is applicable to the inspection for process stability.

This Standard specifies the order contents, dimension, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of the high-carbon chromium bearing steel.