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casing pipe, pup joints, drill pipe,

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casing pipe, pup joints, drill pipe,
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Acceptance Criteria For Casing Pipe

Date:2024-06-25View:475Tags:casing pipe, pup joints, drill pipe,

Acceptance criteria for casing pipe


casing pipe


Steel casing pipe, also known as casing pipe, is most commonly used in underground construction to protect various types of utility pipelines from damage. Such damage may occur due to natural factors or human activities. Casing pipe is a type of OCTG pipe, which is also divided into pup joints and drill pipes.


Supervision and inspection


Before the casing pipe enters the construction site, a supervision and inspection department is required to inspect the casing pipe. The main purpose is to determine whether the quality, specifications and steel grade of the casing pipe meet the technical requirements and acceptance standards. The supervision and inspection work requires the overall quality of the casing pipe to be inspected, and any abnormalities to be recorded and classified during the inspection process to ensure that the quality of each casing pipe is tracked in place.


Appearance inspection


1. Observe whether there are dents, bumps, scratches and any visible signs of corrosion on the surface of the casing pipe, such as cracks, bulges, bubbles, burn marks, etc.


2. Check the quality of the coating on the surface of the casing pipe to see if it is flat, smooth and uniform.


3. Check whether there are bulges, deformations or gaps at the connection parts of the casing pipe.


4. Check whether the markings, paint and engravings of the casing pipe are clear and easy to follow up and manage.


Dimension measurement


1. Measure the length, inner diameter and outer diameter of the casing pipe to see if they meet the requirements.


2. Check whether the length, diameter and tolerance of the connection parts of the casing pipe meet the design requirements.


3. Check whether the wall thickness of the casing pipe meets the standard.


4. Check the ovality and roundness of the casing pipe to ensure that the shape of the casing pipe meets the specified requirements.


Material inspection


1. Check whether the physical and chemical properties of the casing pipe material meet the standards, such as hardness, tensile strength, impact strength, heat resistance, corrosion resistance, etc.


2. Check whether the relevant certification documents of the casing pipe material are complete.


Non-destructive testing


Non-destructive testing of casing pipe includes ultrasonic testing, magnetic particle testing, hydraulic testing and other methods. These methods can be used to find quality problems such as surface defects, cracks, cracks and holes inside the casing pipe. Generally speaking, non-destructive testing needs to be carried out by professionals, using the latest testing technology and equipment to ensure the quality of the casing pipe is safe and reliable.


Test precautions

1. Before testing the casing pipe, check the status of the test equipment to ensure that it can work properly.


2. During the test, pay attention to maintaining the stability of the test environment to avoid external interference.


3. During the test, the corresponding test standards and procedures should be followed to ensure the accuracy of the test results.


4. After the test, the test data should be counted and analyzed in time, and any problems found should be dealt with in time.


In short, the acceptance of casing pipe is very important and should be carried out in accordance with relevant standards and requirements, with special attention paid to the details of inspection and testing to ensure that the quality and performance of the casing pipe meet the requirements.