Invention Grant
- Patent Title: Inhibition of stress-corrosion cracking of steel pipeline
- Patent Title (中): 钢管道应力腐蚀开裂的抑制
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Application No.: US477169Application Date: 1974-06-06
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Publication No.: US3973056APublication Date: 1976-08-03
- Inventor: Raymond Roy Fessler , Warren Elmer Berry , Russell Lee Wenk , Redvers Nicholson Parkins
- Applicant: Raymond Roy Fessler , Warren Elmer Berry , Russell Lee Wenk , Redvers Nicholson Parkins
- Applicant Address: VA Arlington
- Assignee: American Gas Association, Inc.
- Current Assignee: American Gas Association, Inc.
- Current Assignee Address: VA Arlington
- Main IPC: C23F11/18
- IPC: C23F11/18 ; C23F13/02 ; F16L58/00 ; F16L58/04 ; C23F13/00
Abstract:
A method for inhibiting stress-corrosion cracking of a steel pipeline transmitting gas under elevated pressure provided with an external protective coating and means for cathodic protection, and steep pipe and pipelines so protected are described. The method consists of introducing a composition containing at least one of the inhibitors, calcium monobasic phosphate, sodium monobasic phosphate, sodium tripolyphosphate and potassium silicate, into a buried pipeline environment. The inhibiting composition may be simply introduced to the environment adjacent the pipeline or it may be incorporated in a coating on the pipeline, either in the primer or in a top coating thereover or in an intermediate coating between a conventional primer and topcoating, or in a tape applied to the pipeline.
Public/Granted literature
- US5596407A Optical detector for echelle spectrometer Public/Granted day:1997-01-21
Information query
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