22tcn 170-87 | DELUXE – 2027 |

, 22 TCN 170-87 was part of a broader suite of "Tiêu chuẩn ngành" (Sector Standards). At just 18 pages, it was designed as a practical field guide rather than an exhaustive theoretical treatise. It addressed a variety of materials, including reinforced concrete and steel, which were the staples of Vietnamese bridge construction during that era. Legacy and Modern Application While more advanced standards like 22 TCN 272-05 and the newer TCVN 11823:2017

is a Vietnamese technical standard (Provision) focused on the load testing and inspection of bridges . It was originally issued by the Ministry of Transport (Minavtodor Vietnam) in 1987.

is a critical technical standard in Vietnam’s transportation engineering sector, specifically titled "Bridge Testing Procedures" (Quy trình thử nghiệm cầu) . Established in 1987 by the Ministry of Transport, this regulation remains a foundational document for assessing the structural integrity and load-bearing capacity of bridges across the country. Overview of 22TCN 170-87

The presence of Nickel and Chromium distinguishes from plain carbon steels. This combination allows the steel to maintain high impact strength even at low temperatures, a critical feature for outdoor and heavy-duty machinery. 22tcn 170-87

22 TCN 170-87 is a Vietnamese technical standard titled "Quy trình thử nghiệm cầu"

Bridges with spans exceeding specific limits (e.g., steel spans over 80m or concrete spans over 40m) require rigorous verification.

The standard outlines precise methods for measuring how a bridge reacts to static and dynamic loads. Data is typically collected using specialized equipment to monitor: , 22 TCN 170-87 was part of a

The "TC" (Tracked) origin is most evident here. The steel is used for:

If you cannot source directly, you may need an international equivalent. While no grade is a perfect 1:1 match due to Nickel content, these are the closest approximations:

For an engineer selecting a material, the mechanical properties are the final verdict. According to standard , the material must meet the following criteria after proper heat treatment: Legacy and Modern Application While more advanced standards

Disclaimer: The data presented in this article is for general informational purposes based on historical GOST standards and industry practices. Always consult a qualified engineer and the original material specification for safety-critical applications.

When substituting, do not rely on name alone. Require a Mill Test Certificate (MTC) confirming that the substitute meets or exceeds the 1,700 MPa tensile requirement of 22TCN 170-87 .

Thus, defines a heat-treated (quenched and tempered) alloy steel with a tensile strength of approximately 170 daN/mm² (~1700 MPa or 246,000 psi).

, 22 TCN 170-87 was part of a broader suite of "Tiêu chuẩn ngành" (Sector Standards). At just 18 pages, it was designed as a practical field guide rather than an exhaustive theoretical treatise. It addressed a variety of materials, including reinforced concrete and steel, which were the staples of Vietnamese bridge construction during that era. Legacy and Modern Application While more advanced standards like 22 TCN 272-05 and the newer TCVN 11823:2017

is a Vietnamese technical standard (Provision) focused on the load testing and inspection of bridges . It was originally issued by the Ministry of Transport (Minavtodor Vietnam) in 1987.

is a critical technical standard in Vietnam’s transportation engineering sector, specifically titled "Bridge Testing Procedures" (Quy trình thử nghiệm cầu) . Established in 1987 by the Ministry of Transport, this regulation remains a foundational document for assessing the structural integrity and load-bearing capacity of bridges across the country. Overview of 22TCN 170-87

The presence of Nickel and Chromium distinguishes from plain carbon steels. This combination allows the steel to maintain high impact strength even at low temperatures, a critical feature for outdoor and heavy-duty machinery.

22 TCN 170-87 is a Vietnamese technical standard titled "Quy trình thử nghiệm cầu"

Bridges with spans exceeding specific limits (e.g., steel spans over 80m or concrete spans over 40m) require rigorous verification.

The standard outlines precise methods for measuring how a bridge reacts to static and dynamic loads. Data is typically collected using specialized equipment to monitor:

The "TC" (Tracked) origin is most evident here. The steel is used for:

If you cannot source directly, you may need an international equivalent. While no grade is a perfect 1:1 match due to Nickel content, these are the closest approximations:

For an engineer selecting a material, the mechanical properties are the final verdict. According to standard , the material must meet the following criteria after proper heat treatment:

Disclaimer: The data presented in this article is for general informational purposes based on historical GOST standards and industry practices. Always consult a qualified engineer and the original material specification for safety-critical applications.

When substituting, do not rely on name alone. Require a Mill Test Certificate (MTC) confirming that the substitute meets or exceeds the 1,700 MPa tensile requirement of 22TCN 170-87 .

Thus, defines a heat-treated (quenched and tempered) alloy steel with a tensile strength of approximately 170 daN/mm² (~1700 MPa or 246,000 psi).