KMK 2.04.12-97 PDF

Full title and description

KMK 2.04.12-97 — "Strength calculation of steel pipelines" (Russian: Расчет на прочность стальных трубопроводов). This KMK construction norm gives rules and calculation procedures used in design and verification of steel piping systems.

Abstract

KMK 2.04.12-97 specifies methods for evaluating the strength of steel pipelines, including determination of required wall thicknesses, assessment of static and cyclic (fatigue) strength, treatment of welded joints, and consideration of loads from internal pressure, weight, thermal deformation and support reactions. The document is a national/regional construction norm in the KMK series and has been superseded by a newer SHNK edition. Where appropriate, its technical approach aligns with established pipeline strength rules found in related СНиП/СП guidance for steel pipelines.

General information

• Status: Replaced / superseded (see SHNK 2.04.12-22 as the currently active edition replacing KMK 2.04.12-97).
• Publication date: 1997 (as indicated by the document identifier "-97").
• Publisher: Issued as part of the KMK construction norms system administered by national construction authorities (originally under the State Committee for Architecture and Construction / national construction standardization bodies; oversight of KMK/SHNK norms is now within the Ministry/State construction authorities).
• ICS / categories: Construction / Building engineering — design of pipelines and associated structural supports; normative category: pipeline strength calculation / mechanical design for building services and industrial piping.
• Edition / version: Original KMK edition (1997); superseded by SHNK 2.04.12-22 (published as the updated normative document).
• Number of pages: Approximately 22 pages (original KMK 2.04.12-97 document).

Scope

Applies to calculation and verification of steel pipelines used in buildings, heating networks and industrial installations within the jurisdictions that employ KMK norms. The standard addresses strength checks under internal pressure, mechanical loads (self-weight, insulation, soil when buried), thermal expansion and contraction, and includes guidance for checking both static and cyclic (fatigue) performance of pipes, fittings and welded joints. It is intended for design-stage calculations and for verification during modification/maintenance when applicable. The technical content parallels common СНиП/СП requirements for steel pipeline strength.

Key topics and requirements

• Methods for determining wall thickness of pipes and connecting fittings to resist internal pressure and mechanical loads.
• Load and influence classification (dead weight, thermal loads, internal pressure, soil/ice/wind where applicable).
• Static strength checks and criteria for invoking fatigue (cyclic) strength calculations.
• Design/assessment of welded joints and reduction factors for joints without full non‑destructive testing.
• Support spacing, bearing conditions, and allowances for thermal expansion (supports, anchors, compensators).
• Special provisions for elevated temperatures, corrosive environments and interactions with attached equipment.

These topics reflect the KMK document's principal technical content and are consistent with established national pipeline strength practice.

Typical use and users

Used by mechanical and piping engineers, structural engineers responsible for piping supports, project design organisations, regulatory reviewers and inspection bodies during design, construction and modification of steel piping systems in buildings, district heating and industrial facilities. It is applied during design calculations, preparation of project documentation and technical expert review.

Related standards

Closely related or complementary documents include: SHNK 2.04.12-22 (the updated/superseding standard for strength calculation of steel pipelines); СНиП / СП documents on pipeline strength and stability (for example СНиП 2.04.12 and its updated consolidated editions / СП 33.13330 series); and adjacent KMK/КМҚ technical rules covering pipeline design, thermal networks and installation of pipeline systems. Designers should apply the currently active SHNK edition where available.

Keywords

steel pipelines; strength calculation; wall thickness; welded joints; static strength; fatigue; thermal expansion; pipeline supports; KMK; SHNK.

FAQ

Q: What is this standard?

A: KMK 2.04.12-97 is a KMK-series construction norm titled "Strength calculation of steel pipelines" that provided rules and calculation methods for the structural strength assessment of steel piping systems.

Q: What does it cover?

A: It covers calculation procedures for determining required pipe wall thicknesses, evaluation of static and cyclic (fatigue) strength, treatment of welded joints, loads to be considered (pressure, weight, thermal deformation, soil/support reactions) and support/anchor design assumptions relevant to building and industrial piping.

Q: Who typically uses it?

A: Mechanical/piping engineers, structural engineers (piping supports), project design organisations, technical reviewers and regulatory/inspection bodies working on design, verification and modification of steel pipelines in jurisdictions that reference KMK norms.

Q: Is it current or superseded?

A: KMK 2.04.12-97 has been superseded — the active replacement is SHNK 2.04.12-22. Users should apply the SHNK (or other currently mandated national code) when it is adopted by the project jurisdiction.

Q: Is it part of a series?

A: Yes — KMK 2.04.12-97 is one item in the KMK family of construction norms (KMK / ҚМҚ series) covering building and engineering design topics; related KMK/SHNK documents address piping materials, installation and complementary design areas.

Q: What are the key keywords?

A: Steel pipelines, strength calculation, wall thickness, welded joints, static and cyclic strength, thermal deformation, supports, KMK, SHNK.