国标标准：GB/T 23911《无损检测 渗透检测用试块》

本标准规定了渗透检测用试块（或渗透试块）的分类、技术要求和检验方法。本标准适用于渗透试块的型式检验和出厂检验。本标准也可作为用户订货的验收依据。注：本标准适用的渗透试块未包括 GB/T 18851.3 中的 1 型和 2 型试块。

This standard specifies the classification, technical requirements and test methods of blocks for penetrant testing (or penetrant testing blocks). This standard is applicable to type testing and Exfactory inspection of penetrant testing blocks.This standard may also be used as the acceptance criteria for in client orders. NOTE The penetrant testing blocks applicable to this standard do not include Type 1 and Type 2 blocks in GB/T 18851.3.

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