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GMW14658

Double Wall Construction Steel Tubing

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Organization: GMW
Publication Date: 1 October 2020
Status: active
Page Count: 13
scope:

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

This standard covers double wall construction tubing wherein the two walls and the joints are copper brazed in a reducing atmosphere to produce tubing satisfactory for hydraulic brake lines, lubrication oil lines, vacuum lines, air brake lines, etc. There are requirements for the base metal, the optional coating materials, and the coated tubing. These requirements are applicable to the product coming out of the tube mills and the coating application lines, which are sometimes separate facilities. This tubing is used in the production of customized parts and assemblies. It is recommended that those parts and assemblies be validated for corrosion performance, conductivity and continuity, strength, appearance, and other critical properties unique to the particular application.

Symbols.

Not applicable.

Applicability.

Double wall steel tubing is typically used for automotive hydraulic brake lines.

Remarks.

Double wall steel tubing should not be used for fuel lines because residual copper can contribute to the formation of sour gas.

Document History

GMW14658
October 1, 2020
Double Wall Construction Steel Tubing
Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence....
June 1, 2015
Double Wall Construction Steel Tubing
Material Description. This standard covers double wall construction tubing wherein the two walls and the joints are copper brazed in a reducing atmosphere to produce tubing satisfactory for hydraulic...
February 1, 2012
Double Wall Construction Steel Tubing
Material Description. This standard covers double wall construction tubing wherein the two walls and the joints are copper brazed in a reducing atmosphere to produce tubing satisfactory for hydraulic...
April 1, 2007
Double Wall Construction Steel Tubing
Material Description. This standard covers double wall construction tubing wherein the two walls and the joints are copper brazed in a reducing atmosphere to produce tubing satisfactory for...

References

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