ISO 9330-4-2000 PDF

Full title and description

Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Submerged arc-welded unalloyed and alloyed steel tubes with specified elevated temperature properties. This international standard specifies technical delivery conditions for submerged arc-welded circular tubes made from unalloyed or alloyed steels intended for pressure applications where the material is subjected to elevated temperatures (for example steam-generating equipment and associated interconnecting pipework).

Abstract

This part of ISO 9330 defines requirements covering manufacturing, metallurgical properties, dimensions and tolerances, inspection and testing, marking and delivery conditions specifically for submerged arc‑welded steel tubes with specified elevated‑temperature properties. It references general delivery requirements and related application standards that users must consider when applying the standard.

General information

• Status: Published (confirmed as the published edition of the standard).
• Publication date: 13 July 2000.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.040.10 (Iron and steel pipes); 77.140.75 (Steel pipes and tubes for specific use).
• Edition / version: Edition 1 (2000).
• Number of pages: 25.

Scope

Specifies the technical delivery conditions for submerged arc‑welded tubes of circular cross‑section made of unalloyed or alloyed steels with specified elevated temperature properties. The tubes covered are intended for pressure purposes where the material will operate at elevated temperatures (for example in steam-generating equipment and connecting pipework). The standard also notes that appropriate international application standards and relevant national legal regulations should be taken into account by users.

Key topics and requirements

• Definitions and nomenclature for welded steel tubes intended for pressure service (tube/pipe terminology and symbols).
• Requirements for materials (unalloyed and alloyed steels) with specified elevated‑temperature mechanical properties.
• Manufacturing process requirements specific to submerged arc welding and applicable dimensional/tolerance limits for circular tubes.
• Inspection and testing obligations, including mechanical tests and any temperature‑related property verification required for elevated‑temperature service.
• Heat treatment, marking, protection and documentation/delivery requirements for conformity with purchaser information and contractual arrangements.
• References to applicable general delivery standards and application standards (users are directed to ISO documents such as ISO 404 and other pressure‑equipment standards as appropriate).

Typical use and users

Typical applications include pressure systems and piping subjected to elevated temperatures—most commonly steam generators, boilers and high‑temperature interconnecting pipework in power plants and industrial process installations. Typical users are tube manufacturers, fabricators, purchasers/specifiers for pressure equipment, quality and inspection personnel, and standards/engineering teams involved in pressure‑equipment design and procurement.

Related standards

ISO 9330 is a multipart series covering welded steel tubes for pressure purposes; related parts include ISO 9330‑1 (unalloyed steels, room temperature properties), ISO 9330‑2 (electric‑resistance and induction welded, elevated temperature), ISO 9330‑3 (low temperature properties for electric‑resistance/induction welded), ISO 9330‑5 (submerged arc‑welded with specified low temperature properties) and ISO 9330‑6 (longitudinally welded austenitic stainless steel tubes). Users should also consider cross‑references such as ISO 404 (general technical delivery requirements) and other pressure‑equipment application standards (for example ISO 5730 noted for some pressure applications).

Keywords

welded steel tubes, submerged arc welding, pressure purposes, elevated temperature properties, technical delivery conditions, tube dimensions, inspection and testing, ISO 9330, heat treatment, marking.

FAQ

Q: What is this standard?

A: ISO 9330‑4:2000 is the part of the ISO 9330 series that sets technical delivery conditions for submerged arc‑welded unalloyed and alloyed steel tubes intended for pressure service where elevated‑temperature properties are required.

Q: What does it cover?

A: It covers material and manufacturing requirements, dimensional and tolerance criteria, required inspections and tests, heat treatment and marking, and delivery documentation specific to submerged arc‑welded tubes with specified elevated‑temperature mechanical properties. It also directs users to applicable general delivery standards and other application standards.

Q: Who typically uses it?

A: Tube manufacturers and welders, purchasers and specifiers for pressure and high‑temperature piping, quality and inspection engineers, and design/specification teams for boilers, steam generators and industrial high‑temperature process piping.

Q: Is it current or superseded?

A: ISO 9330‑4 was published on 13 July 2000 (Edition 1) and the published ISO record indicates its lifecycle and review history; users should check with ISO or their national standards body for the most current status or any amendments/confirmations after 2012. For authoritative, up‑to‑date confirmation consult ISO or an authorized national adopter.

Q: Is it part of a series?

A: Yes — ISO 9330 is a multipart series (parts 1–6) covering technical delivery conditions for various welded steel tubes for pressure purposes and differing welding processes and temperature‑service requirements. See the other parts of ISO 9330 for complementary requirements.

Q: What are the key keywords?

A: welded steel tubes; submerged arc‑welded; pressure purposes; elevated temperature; technical delivery conditions; ISO 9330; inspection and testing; heat treatment; marking.