T/TTPVB 0003-2021 (English Version) PDF

Scope: This standard is based on GB/T27740-2011, and has been partially improved and improved based on industry market demand and practical conditions. a. The product classification and code names basically follow the national industry standards, with slight modifications and enrichments, and are separated from the classification due to customer needs for product marketing. b. For the intrinsic quality requirements of the product, we improve it from the aspects of appearance, physical and chemical properties and mechanical properties. three quality indicators. C. The judgment of quality inspection results is more clearly defined based on the actual situation. The formulation of the above standards is more specific and practical than the 2011 industry standards. It is easier to master and implement in the production process and market trade process.

T/TTPVB 0003-2021 history