Page 132 - CITS - Welder - Trade Theory

WELDER - CITS

Fig 5

In plate welding the sealing run can easily be deposited when needed. In pipe welding the sealing run cannot be
deposited in small pipes. Sealing run can be deposited only when the pipe has so large a diameter as to allow
the welder to enter into the pipe.
Possibility of distortion is higher in plate welding. Possibility of distortion is less in pipe welding.
Tip travel and hand travel will be equal in plate welding. Tip travel will be less and hand travel will be more in pipe
welding.

Fig 6

Topic - Types of pipe and pipe schedule, preparation
work before

Objectives : At the end of this lesson you shall be able to
• describe types pipe
• explain pipe schedule.

Introduction
Pipelines play an indispensable role in the oil and gas industry, serving as the backbone for fluid transport. From
crude oil to natural gas, pipe infrastructure ensures that these industry essentials are securely conveyed from
extraction sites to refineries and, finally, consumers. Each kind of pipe possesses certain qualities making it
suitable for specific applications. Following are the 10 different types of pipes used in Oil and Gas Industry.
1 Stainless Steel Pipes
Stainless Steel Pipes are of high use in the oil and gas industry due to their corrosion resistance ability. With the
availability of different grades like 304, 310, 316, and 410, they cater to different use cases – for instance, the
316 grade is ideal for high-temperature, high-pressure applications given its enhanced resistivity. Its structural
integrity serves in applications like water transport and petroleum industries.

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CITS : C G & M - Welder - Lesson 33 - 43