Carbon Steel Pipes to API 5L Grade B Standard Weight

[danapillai]

Greetings!
This is for a Chilled water piping project (1000mm dia max). We are procuring pipes from SEAH Korea, from 250mm to 1000mm. And for calculations for support, load, thrust, etc, i need the following details for these pipes.

1. Coefficient of Linear Expansion
2. Longitudinal Elastic Modulus
3. Allowable stress (for temperature below 40 deg C)

I have got these details from a Japan manufacturer as 11.6 x 10^-6 K^-1 (0-100 deg C), 1.96*10^4 kg/mm^2 at 20 deg C, and 100 N/mm^2 respectively.

Please advise how to calculate these things for the particular standard mentioned.

Thanks!

 

[Astronuc]

One could purchase the standard from API.

Apparently there is an equivalence among API 5L grade B/ASTM A106 Grade B/ASTM A53 Grade B. But there may be subtle differences.

Normally when one purchases a product, one specifies the applicable standard or code in the purchase order, which includes dimensional specs and materials properties, and the seller tests and certifies according to the standard.

 

[ravenprp]

Hello there,

Thank you for providing the information about your project and the pipes you are using. To calculate the required details for the carbon steel pipes to API 5L Grade B Standard Weight, you can refer to the API 5L specification. This specification provides the necessary information for the properties and characteristics of API 5L pipes.

1. Coefficient of Linear Expansion:
The coefficient of linear expansion for carbon steel pipes to API 5L Grade B Standard Weight is 11.6 x 10^-6 K^-1 (0-100 deg C). This value is provided in the API 5L specification and is the same as the value you received from the Japan manufacturer.

2. Longitudinal Elastic Modulus:
The longitudinal elastic modulus for carbon steel pipes to API 5L Grade B Standard Weight is 1.96*10^4 kg/mm^2 at 20 deg C. This value can also be found in the API 5L specification under the mechanical properties section.

3. Allowable Stress:
The allowable stress for temperatures below 40 deg C is 100 N/mm^2. This value can be calculated using the formula provided in the API 5L specification, which takes into account the grade, wall thickness, and temperature of the pipe.

I hope this helps you with your calculations and supports your project. If you have any further questions, please do not hesitate to reach out. Best of luck with your project!