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2025-11-14
grama
2028

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GB/T 13305-2008 — Micrographic Method for Determining Area Content of α-Phases in Stainless Steels (English Translation)

GB/T 13305-2008 — Micrographic Method for Determining Area Content of the α-Phases in Stainless Steels Standard Number: GB/T 13305-2008 ICS: 77.040.99 Issued: August 19, 2008 Effective: April 1, 2009 Issuing Authority: Standardization Administration of the People’s Republic of China Replaces: GB/T 13305-1991 and GB/T 6401-1986 Preface This standard replaces GB/T 6401-1986 and GB/T 13305-1991. The […]

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GB/T 6401-1986 | Micrographic Method for Determining Area Fraction of α-Phase in Ferritic-Austenitic Duplex Stainless Steels

GB/T 6401-1986 Micrographic Method for Determining Area Fraction of α-Phase in Ferritic-Austenitic Duplex Stainless Steels Using Charts Scope This standard specifies the micrographic method for determining the area fraction of the α-phase in ferritic-austenitic duplex stainless steels. 1. Preparation of Test Specimens 1.1 Specimens shall be taken in the delivery condition. The sampling location and […]

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Complete Guide to Flange Types: Blind Flanges, Gaskets, and Sizing Standards

Introduction to Industrial Flanges Flanges are essential components in piping systems, providing a reliable method for connecting pipes, valves, pumps, and other equipment. Understanding the different types of flanges, their applications, and proper sizing is crucial for ensuring safe and efficient operations in various industries. What Are Blind Flanges? Blind flanges are solid disks used […]

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