GOST 33258-2015 PDF

Full title and description

GOST 33258-2015 — Pipeline valves. Surfacing and quality control of surfaced surfaces. Technical requirements. (Russian: ГОСТ 33258-2015 — Арматура трубопроводная. Наплавка и контроль качества наплавленных поверхностей. Технические требования.)

Abstract

This standard specifies technical requirements for surfacing (hardfacing, cladding) of working and sealing surfaces of pipeline valves and for the quality control (inspection and testing) of those surfaced surfaces. It covers recommended surfacing methods, materials and consumables, dimensional and hardness requirements, acceptance criteria and required inspection methods to ensure wear resistance and sealing performance of valve components.

General information

• Status: Active / Current national implementation.
• Publication date: Designation year 2015; introduced into force in the Russian Federation on 1 April 2016 (adopted by Rosstandart order).
• Publisher: Interstate standard adopted as a national standard (implemented by the Federal Agency for Technical Regulation and Metrology — Rosstandart).
• ICS / categories: OKС / ICS: 23.060 — Pipeline valves (Hydraulic and pneumatic systems and components for general use).
• Edition / version: GOST 33258-2015 (first issue under the 2015 designation).
• Number of pages: Approximately 50 pages.

Scope

Applies to surfacing (weld-based overlay, hardfacing) of valve components intended for pipeline service and to the procedures and acceptance criteria for inspection and testing of surfaced areas. The standard is intended for use in manufacturing and repair of industrial pipeline valves where surfaced surfaces (seats, sealing rings, plugs, discs, guides and other wear-prone parts) require controlled properties (thickness, adhesion, hardness, integrity and surface finish) to meet performance and safety requirements.

Key topics and requirements

• Types of surfacing processes and recommended consumables (manual and mechanized electric-arc surfacing, electrode types and modes).
• Minimum overlay geometry and layer thickness requirements for different electrode types and applications.
• Hardness ranges and measurement requirements for surfacing deposits after final machining.
• Pre‑ and post‑surfacing preparation, heat treatment and measures to avoid overheating and deterioration of base metal.
• Surface quality requirements (appearance, absence of cracks, porosity limits) and dimensional tolerances after surfacing and machining.
• Inspection and testing methods: visual inspection, dimensional control, hardness testing, non‑destructive testing (e.g., dye penetrant, ultrasonic or magnetic particle testing as applicable), and acceptance criteria.
• Documentation and marking requirements: weld procedure records, inspection records, material and batch references.
• Guidance for repair surfacing and for selection of overlay materials depending on working medium and wear conditions.

Typical use and users

Used by manufacturers of pipeline valves, valve repair and reconditioning shops, quality assurance and inspection personnel, welding engineers, metallurgists, purchasers specifying valve acceptance criteria, and designers of piping systems in oil & gas, petrochemical, power generation and general industry where valve sealing and wear resistance are critical.

Related standards

Typically referenced together with national and international standards on valve design and dimensions (other GOSTs governing flanges and valve construction), standards on welding and overlay procedures, and standards for hardness testing and non‑destructive testing. Examples of related documents commonly used in the same context include national GOSTs for flanges and valve construction, standards on welding procedure qualification and common NDT and hardness-testing methods (ISO/EN and GOST series addressing welding, hardness measurement and NDT).

Keywords

pipeline valves, surfacing, hardfacing, cladding, overlay welding, quality control, inspection, non‑destructive testing, hardness, electrodes, wear resistance, valve repair, sealing surfaces.

FAQ

Q: What is this standard?

A: GOST 33258-2015 is a technical standard that sets requirements for surfacing (weld overlay/hardfacing) of valve components and for the inspection and acceptance of the resulting surfaced surfaces.

Q: What does it cover?

A: It covers recommended surfacing methods and consumables, dimensional and hardness requirements for overlays, measures to prevent damage to base metal, inspection and testing methods (visual, hardness, NDT), acceptance criteria, and required documentation for valve surfacing and repairs.

Q: Who typically uses it?

A: Valve manufacturers, repair facilities, welding and metallurgical engineers, QA/QC inspectors, procurement/specification engineers and technical staff in industries using pipeline valves (oil & gas, petrochemical, power, water and others).

Q: Is it current or superseded?

A: The document is issued under the 2015 designation and was implemented as a national standard in 2016; it is treated as current in published standards catalogues. Users should verify nationally whether any amendments or newer revisions have been issued before applying the standard to new procurement or design work.

Q: Is it part of a series?

A: It is one of a set of standards addressing pipeline valves and associated components—used alongside other GOSTs governing valve design, flanges, welding and testing. It complements standards that set dimensional, material and testing rules for valves and pipeline components.

Q: What are the key keywords?

A: Pipeline valves; surfacing; hardfacing; weld overlay; quality control; non‑destructive testing; hardness; electrodes; sealing surfaces; valve repair.