Referred standards of concrete coated pipe

When it comes to manufacturing and ensuring the quality of concrete coated pipes, adherence to a range of standards is essential. These standards guide not only the coating specifications but also the testing procedures and material properties required for optimal performance in challenging environments such as marine or underground pipeline systems. Below are the key standards that are commonly referenced in the production and inspection of concrete coated pipes.

DNV-OS-F101: Submarine Pipeline Systems
This standard by Det Norske Veritas (DNV) specifies requirements for submarine pipeline systems and applies to various grades of steel used in pipeline coatings, such as SAWL 245, SAWL 290, SAWL 320, SAWL 360, SAWL 415, SAWL 450, SAWL 485, and SAWL 555. It provides guidance on structural integrity, material selection, and performance criteria necessary for ensuring long-lasting and reliable submarine pipelines.

ISO 21809-5:2010
This ISO standard is dedicated to the petroleum and natural gas industries, specifically focusing on external coatings for buried or submerged pipelines. Part 5 of this series outlines the requirements for external concrete coatings, ensuring they are suited to protect pipes used in pipeline transportation systems from physical damage and environmental degradation.

ASTM Standards

ASTM C42: This standard provides methods for obtaining and testing drilled cores and sawed beams of concrete, enabling the assessment of concrete quality and structural integrity within coated pipes.

ASTM C87: This standard tests the effect of impurities in fine aggregates on mortar strength, ensuring that impurities do not compromise the strength and durability of the concrete coating.

ASTM C642: This method determines specific gravity, absorption, and void content in hardened concrete. The data obtained helps to evaluate the porosity and water resistance of the concrete coating, which are crucial for its performance in harsh environments.

British Standards (BS)

BS 1881: This standard encompasses a variety of testing methods for concrete, which ensures comprehensive quality assessment of concrete coatings used in pipes.

BS 3148: This standard specifies methods for assessing water quality used in concrete, ensuring the water does not introduce detrimental effects on the concrete's strength or durability.

BS 4449: This material specification standard applies to carbon steel bars for concrete reinforcement, crucial for ensuring adequate strength and resilience in reinforced concrete coatings.

BS 4482: This standard specifies hard-drawn mild steel wire used for concrete reinforcement, which plays a role in enhancing the mechanical properties of concrete coatings.

BS 4483: This specification covers steel fabric used for concrete reinforcement, ensuring that the reinforcement structure within the concrete coating provides the required strength and durability.

ISO 4012
This ISO standard provides guidelines for the determination of compressive strength in test specimens. By adhering to this standard, manufacturers can assess the strength of the concrete coating material used in pipeline systems, ensuring it meets specified load-bearing requirements.

These standards collectively provide a framework to produce concrete-coated pipes that meet international quality and durability benchmarks, ensuring their effective performance in complex pipeline applications.