Standards

QB/T 1422.3-2023 Pulp and paper machinery common parts, cast iron roll

This document specifies the structural type, materials, processing and assembly quality, non-destructive testing, balance quality, water permeability, roll surface rubber coating quality, and roll surface spraying requirements for cast iron rolls used in paper machines. It also describes the corresponding test methods and stipulates the requirements for inspection rules, marking, packaging, transportation, and storage. This document is applicable to the production, design, inspection, and sales of cast iron rolls used in paper machines with a line pressure not exceeding 400 kN/m and a diameter of less than 1,800 mm (hereinafter referred to as "cast iron rolls").

Publish Date: 2023-12-20

QB/T 1422.5-2023 QB/T 1422.5-2023 Paper Making Machinery General Components Steel Pipe Roll。

This document specifies the structural type, materials, processing and assembly quality, non-destructive testing, balance quality, water flow, roll surface rubber coating quality, roll surface plating, coating, and spraying requirements for steel tube rolls used in paper machines. It also describes the corresponding test methods and stipulates requirements for inspection rules, marking, packaging, transportation, and storage. This document is applicable to the production, design, inspection, and sales of paper machine rolls with a diameter of less than 2,000 mm, including chest rolls, case rolls, pressure rolls, drive net rolls, guide rolls, paper drawing rolls, paper winding rolls, paper winding cylinders, forming rolls, and other steel tube roll cylinders (hereinafter referred to as "steel tube rolls").

Publish Date: 2023-12-20

QB/T 5955-2023 Steel lined polyamide composite pipe

This document specifies the requirements for the specifications and dimensions, physical and mechanical properties of steel-lined polyamide composite pipes, describes the samples and corresponding test methods, and stipulates the inspection rules, marking, packaging, transportation, and storage. It also provides a classification and marking system for technical specifications. This document is applicable to the production, inspection, and sales of products assembled from outer pipes, flanges welded at both ends of the outer pipes, and inner-lined polyamide pipes.

Publish Date: 2023-12-20

QB/T 5942-2023 Protective clothing made of artificial leather and synthetic leather

This document specifies the requirements for the appearance, size, and comprehensive performance of protective clothing made from artificial leather and synthetic leather products. It describes the test samples and corresponding testing methods, stipulates the inspection rules, marking, packaging, transportation, and storage requirements, and provides a product grading system for technical specifications. This document applies to the production, testing, and sales of products with liquid barrier performance or liquid-borne microbial barrier performance.

Publish Date: 2023-12-20

QB/T 5954-2023 Organic Silicon Leather Synthetic Material

This document specifies the requirements for the specifications, appearance, and physical and chemical properties of silicone artificial leather (hereinafter referred to as "the product"), describes the corresponding test methods, and stipulates the inspection rules, marking, packaging, transportation, and storage. This document is applicable to the production, inspection, and sale of products made from knitted fabric, woven fabric, and non-woven fabric bases coated with silicone materials and subjected to post-treatment processes.

Publish Date: 2023-12-20

QB/T 5963-2023 Home Infant Care Table

Publish Date: 2023-12-20

QB/T 5920-2023 Lighting product flash frequency measurement method

Publish Date: 2023-12-20

QB/T 5937-2023 D-Lactic acid

Publish Date: 2023-12-20

QB/T 5939-2023 N-Acetylneuraminic acid

Publish Date: 2023-12-20

QB/T 4481-2023

Publish Date: 2023-12-20

QB/T 5633.11-2023 Amino acid, amino acid salt, and analogues. Part 11: L-Theanine

Publish Date: 2023-12-20

QB/T 5633.12-2023 Amino acid, amino acid salt and analogues - Part 12: L-Phenylalanine

Publish Date: 2023-12-20