JB/T 53173-1999
Valve Carbon Steel Castings - Product Quality Grading (Internal Use)
阀门碳素钢铸件 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 要求 Foreword → 1 Scope → 2 Normative References → 3 Requirements
Scope
This standard specifies the grading evaluation rules for general-purpose valve carbon steel castings (WCB). This standard applies to general-purpose valve carbon steel castings (hereinafter referred to as castings).
本标准规定了通用阀门碳素钢铸件（WCB）的等级评定规则。本标准适用于通用阀门碳素钢铸件（以下简称铸件）。
Normative References
Keywords
Application Summary AI generated
Valve manufacturers and quality inspection agencies use this standard to grade carbon steel castings into three quality levels: qualified, first-class, and superior. It helps users select appropriate quality products based on application requirements. This standard is important for ensuring the reliability and consistency of valve products.
阀门制造企业和质量检验机构使用本标准来对碳素钢铸件进行质量等级评定。该标准将铸件分为合格品、一等品和优等品三个等级，帮助用户根据使用需求选择合适质量的产品。它对于保证阀门产品的可靠性和一致性具有重要意义。
AI Summary AI generated
JB/T 53173-1999 specifies the quality grading evaluation rules for general-purpose valve carbon steel castings (WCB), classifying them into three grades: qualified, first-class, and superior. The standard establishes detailed grading requirements in four aspects: surface quality (including appearance and roughness), dimensional tolerances, weight tolerances, and internal quality (chemical composition and mechanical properties). It is applicable for quality control and product acceptance by valve manufacturers.
本标准JB/T 53173-1999规定了通用阀门碳素钢铸件（WCB）的质量等级评定规则，将铸件分为合格品、一等品和优等品三个等级。标准从表面质量（包括外观和粗糙度）、尺寸公差、重量公差和内在质量（化学成分和力学性能）四个方面制定了详细的分等要求。适用于阀门制造企业的质量控制和产品验收。
Key Sentences extracted from text
本标准规定了通用阀门碳素钢铸件（WCB）的等级评定规则。
阀门碳素钢铸件根据其质量水平和使用价值分为合格品、一等品和优等品三个等级。
铸件外观质量具体要求按JB/T 7927规定，其分等标准应符合表1的规定。
铸件尺寸公差具体要求按GB/T 6414规定，其分等标准应符合表2规定。
铸件的化学成分具体要求按GB/T 12229规定，其分等标准应符合表4规定。
This standard specifies the grading evaluation rules for general-purpose valve carbon steel castings (WCB).
Valve carbon steel castings are divided into three grades: qualified product, first-class product, and superior product, based on their quality level and use value.
The specific requirements for casting appearance quality shall be in accordance with JB/T 7927, and the grading standards shall comply with the provisions of Table 1.
The specific requirements for casting dimensional tolerances shall be in accordance with GB/T 6414, and the grading standards shall comply with the provisions of Table 2.
The specific requirements for the chemical composition of castings shall be in accordance with GB/T 12229, and the grading standards shall comply with the provisions of Table 4.
Standard Timeline
Changes from replaced version:
- 对JB/T 53173—94考核项目：表面质量、化学成分、机械性能、尺寸偏差、重量偏差分别列表说明，并做了相应修改
- 在尺寸公差考核表里包含了壁厚公差，故壁厚公差不再另列表说明
- 增加了对铸件表面粗糙度的要求
- The assessment items of JB/T 53173-94 (surface quality, chemical composition, mechanical properties, dimensional deviations, weight deviations) are listed separately and correspondingly modified
- Wall thickness tolerances are included in the dimensional tolerance assessment table, so they are no longer listed separately
- Requirements for casting surface roughness are added