Joint preparation and identification, Mechanical Engineering

Assignment Help:

The joint bevels shall be prepared in accordance with the registered and approved weld procedure. Internal and external surfaces to be welded shall be clean and free from paint, oil, rust and scale.

Stamp the welder's identification symbol adjacent to all pressure welds with low stress stamp in carbon and low alloy steels with wall thickness of 6.4 mm (1/4") or greater. For flanged joints where the pipe wall thickness is less than 6.4 mm (1/4"), stamp the welders identification on the edge of the flange. When both members of a weld are less than 6.4 mm (1/4") thick, the welder's identity shall be recorded in a permanent written record.

For austenitic stainless steels, high alloy steels and non-ferrous metals, the welder's symbol shall be applied with waterproof paint.

The permanent marking material used on austenitic stainless steels and non-ferrous alloys shall not contain any harmful metal, metal salts, or elements such as zinc, lead, chlorides, sulphur, and other low melting point metals. Submit type of paint or ink including analysis of the above elements for OWNER's approval.


Related Discussions:- Joint preparation and identification

Overhead bridge crane, Overhead Bridge Crane Figure below shows a jib cr...

Overhead Bridge Crane Figure below shows a jib crane. In this type of crane the hook can move in a circular path. A jib crane is preferred where lifting of the jobs is requ

Complaints of engine starting by repairing of motorcycle , Complaints of En...

Complaints of Engine Starting: If there is a problem related to the starting of the bike, it can be due to mechanical as well as electrical reasons. The possible reasons could be

Explain concept of radial drilling machine, Concept of Radial Drilling mach...

Concept of Radial Drilling machine Radial Drilling machine is a large gear headed drill press in which the head moves along the arm that radiates from the column of the machine

Oxides, Oxides These comprise alumina, magnesia, thoria, beryllia and ...

Oxides These comprise alumina, magnesia, thoria, beryllia and zirconia. Other oxides that are utilized sparingly due to high cost comprise hafnia, ceria and yttria. Variety of

Objectives of entrepreneurship development , Objectives After studying...

Objectives After studying this unit, you should be able to weigh the merits and demerits of becoming an entrepreneur, discuss the opportunities and financial assis

Basic s.i. units and its derived unit - mechanics, Basic S.I. Units and its...

Basic S.I. Units and its derived unit: S.I. stands for "System International Units". There are three quantities in the Standard International Systems as concerned to Mechanics

Cold pierce, Material S48C thickness 4mm pierce hole daimeter 4 mm can do o...

Material S48C thickness 4mm pierce hole daimeter 4 mm can do or not? please advise

Calculate the motor efficiency, A 4- pole DC motor is known to have an arma...

A 4- pole DC motor is known to have an armature resistance of 0.5 Ω, and is operated as a separately excited motor. (a)  When the motor is connected to a 250V DC supply with no

Design pumps for plant layout, Q. Design Pumps for plant layout? Pumps ...

Q. Design Pumps for plant layout? Pumps handling flammable or combustible materials are relatively frequent sources of leakage and should therefore be located as far as practic

Banking of a cyclist, what is the formula for measuring the safe speed to d...

what is the formula for measuring the safe speed to drive for a cyclist

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd