Standards

YB/T 4997-2022 Active

YB/T 4997-2022 Spectral chemical analysis: Rules for verifying and quality control chart usage

This document specifies the procedure for preparing quality control charts for confirming the quality of spectrochemical analysis. It proposes guidelines for taking corrective measures; control can be achieved by verifying the response values of test samples with instruments, which can be done simultaneously with the drawing of control charts. This document is specifically for atomic emission spectrometry and can be conditionally applied to other analytical methods. It is not suitable for verifying the accuracy of calibration, and the procedures described in this document are not applicable to analyses that require calibration every time a set of data is measured.

Publish Date: 2022-09-30

YB/T 5293-2022 Active

YB/T 5293-2022 YB/T 5293-2022 Metal material top-end forging test method

This document specifies the principles, samples, testing equipment, testing procedures, evaluation of testing results, and testing reports for the top forging test method of metal materials. This document is applicable to metal materials with the following cross-sectional dimensions (diameter, edge length, or inner-circular diameter): for cold top forging tests, the range is 5mm to 50mm; for hot top forging tests, the range is 5mm to 200mm. For metal materials exceeding the scope of application of this document, they shall comply with the provisions of relevant product standards or agreements.

Publish Date: 2022-09-30

YB/T 164-2022 Active

YB/T 164-2022 The lining of the pre-treatment work of molten iron uses a refractory material of Al2O3-SiC-C quality

This document specifies the terms and definitions, classification, grades, technical requirements, test methods, quality assessment procedures, packaging, marking, transportation, storage, and quality certificates for Al2O3-SiC-C refractory materials used in the working linings of molten iron pre-treatment equipment. This document is applicable to Al2O3-SiC-C refractory materials used in the working linings of torpedo-type molten iron transport and pre-treatment equipment such as molten iron cars and molten iron ladles (tanks).

Publish Date: 2022-09-30

YB/T 6080-2022 Active

YB/T 6080-2022 Automatic ultrasonic testing method for square seamless steel pipes

This document specifies the general requirements, testing methods, comparison sample tubes, inspection and review of equipment, acceptance, and testing reports for automatic ultrasonic transverse wave detection of longitudinal and transverse defects in square seamless steel tubes. This document is applicable to square seamless steel tubes with side lengths ranging from 40 mm × 40 mm to 500 mm × 500 mm, and wall thicknesses of 3.0 mm to 60 mm.

Publish Date: 2022-09-30

YB/T 6079-2022 Active

YB/T 6079-2022 Testing methods for tire cord steel wire

This document specifies the general requirements, appearance quality, dimensions, process performance, mechanical properties, plating analysis test methods, and adhesion performance test methods for steel wire used in tire beads. This document is applicable to the testing methods of tempered round steel wire used in tire beads of all types.

Publish Date: 2022-09-30

YB/T 6035-2022 Active

YB/T 6035-2022 Metal Strip Rewinder Reel Repairing Specification for Unwind and Takeup Machines of Rewinder Equipment

This document specifies the terms and definitions, failure modes, repair methods, technical requirements, inspection methods, marking, packaging, transportation, and storage for the repair of rollers used in metal strip uncoilers and rewinders. This document is applicable to the repair of rollers used in metal strip uncoilers and rewinders, and the repair of other similar rollers can also be used as a reference.

Publish Date: 2022-09-30

YB/T 6028-2022 Active

YB/T 6028-2022 Determination of Magnesium Content in Manganese Iron, Manganese Silicon Alloy, and Metal Magnesium by Flame Atomic Absorption Spectrometry

This document specifies the determination of magnesium content in manganese iron, manganese silicon alloys, and metallic manganese using flame atomic absorption spectrometry. This document is applicable to the determination of magnesium content in manganese iron, manganese silicon alloys, and metallic manganese. The determination range (mass fraction): 0.0050% to 0.50%.

Publish Date: 2022-09-30

YB/T 6027-2022 Active

YB/T 6027-2022 The determination of calcium content in manganese iron, manganese silicon alloy, and metallic manganese by flame atomic absorption spectrometry

This document specifies the determination of calcium content in manganese-iron alloys, manganese-silicon alloys, and metallic manganese using flame atomic absorption spectrometry. This document is applicable to the determination of calcium content in manganese-iron alloys, manganese-silicon alloys, and metallic manganese. The measurement range (mass fraction) is 0.0050% to 0.20%.

Publish Date: 2022-09-30

YB/T 6026-2022 Active

YB/T 6026-2022 Determination of Iron Content in Steel: Determination of Silicon, Manganese, Phosphorus, Sulfur, and Titanium Content by Wavelength Dispersive X-Ray Fluorescence Spectrometry

This document specifies a method for determining the silicon, manganese, phosphorus, sulfur, and titanium contents in molten iron samples used in steelmaking by wavelength-dispersive X-ray fluorescence spectrometry. This document is applicable to the determination of silicon, manganese, phosphorus, sulfur, and titanium contents in molten iron samples used in steelmaking, including gray iron and white iron samples.

Publish Date: 2022-09-30

YB/T 4174.3-2022 Active

YB/T 4174.3-2022 Silicon calcium alloy analysis method - Part 3: Determination of calcium oxide content - Potentiometric titration method

This document specifies the method for determining the calcium oxide content in silicon-calcium alloys by potentiometric titration. This document is applicable to the determination of calcium oxide content in silicon-calcium alloys, with a measurement range (mass fraction) of 0.10% to 5.0%.

Publish Date: 2022-09-30

YB/T 4174.1-2022 Active

YB/T 4174.1-2022 The Analysis Methods of Silicon-Calcium Alloy Part 1: Determination of Aluminum Content by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES)

This document specifies the method for determining the aluminum content in silicon-calcium alloys by inductively coupled plasma atomic emission spectrometry. This document is applicable to the determination of aluminum content in silicon-calcium alloys, with a measurement range (mass fraction) of 0.10% to 5.00%.

Publish Date: 2022-09-30

YB/T 6034-2022 Active

YB/T 6034-2022 Metallurgical rolling machine bearing housing repair technical specification

This document specifies the terms and definitions of the repair of metallurgical rolling mill bearing seats, the failure sites and manifestations, technical requirements, inspection methods, inspection rules, packaging, transportation, storage, and the technical data that should be submitted. This document is applicable to the repair of metallurgical rolling mill bearing seats, and it is also applicable to the repair of similar bearing seats.

Publish Date: 2022-09-30