YB/T 4421-2026 Pending Industry standards-Black metallurgy

YB/T 4421-2026 Wind power flange with continuous casting round billet

Publish Date: 2026-04-16 Implement Date: 2026-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: YB/T 4421-2026

Standard Type: Industry standards

Standard Status: Pending

is_force_gb: no

CCS Name: Steel ingots and steel billets

ICS Name: Steel sections

Publish Date: 2026-04-16

Implement Date: 2026-11-01

Scope

This document specifies the order content, dimensions, shape, weight, and allowable deviations of continuously cast round billets for wind power flanges, as well as technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This document is applicable to continuously cast round billets used in the manufacture of wind power flanges by forging and rolling methods.

Development Information

Replace the following standards

YB/T 4421-2014 Wind power flange used continuous casting round billet

Related Standards

GB/T 4227-1984 abolished_transferred

GB/T 4227-1984 Hot rolled stainless steel with equal leg angles

Publish Date: 1984-03-26

GB 702-1986 Abolished

GB 702-1986 Hot-rolled round and square steels—Dimension, shape, weight and tolerance

Publish Date: 1986-06-07

GB/T 6723-1986 Replaced

GB/T 6723-1986 Cold forming sectional steel—Open sectional steel for general structure—Demension, form, weight and permissible deviations

Publish Date: 1986-08-22

GB/T 6726-1986 Replaced

GB/T 6726-1986 Cold forming sectional steel for cargo vehicle—Demension, form, weight and permissible deviations

Publish Date: 1986-08-22

GB/T 6727-1986 Replaced

GB/T 6727-1986 Cold forming sectional steel for passenger vehicle—Demension, form, weight and permissible deviations

Publish Date: 1986-08-22

GB/T 8649-1988 Abolished

GB/T 8649-1988 Rolling balls

Publish Date: 1988-02-05