Hamedsoft Engineering Company

Hamedsoft Engineering Group

Heat treatment and Advanced NDT

Also manufactures of thermal equipment in numerous industries including power generation, oil and gas industries.

Any kind of heat treatment on any kind of shapes, like Spherical tanks, Towers, Raactors, Pipeline, ...
Advanced NDT services on Headerboxes, Storage Tanks or other metal products.
Produce, Maintenance, Upgrade the PWHT and heat treatment machines.
The most powerfull company for PWHT on spherical tanks.

years of experiences

Happy Clients

167

Successfull projects

PWHT and Advanced NDT

Latest Projects

Alay mahestan petrochemical complex

Kangaan - Iran

Our specific servicesا

Usually ask us

The Importance of Preheating

If preheating is not done before welding, the most important consequence is increased thermal stresses and the formation of severe weld defects. In short: cold metal cannot withstand thermal shock and will crack.

Hamed Changizi

CEO

What Is PAUT?

Phased Array Ultrasonic Testing, abbreviated as PAUT, is a type of advanced non-destructive testing (NDT) used to inspect parts and welds without damaging them.

Hamid Mohammadi

QC - QA

What Factors Affect PAUT Probe Selection?

1. Material type (carbon steel, stainless steel, aluminum, composite materials) 2. Part thickness 3. Expected type of defect 4. Type of inspection (weld inspection, corrosion, forged parts, cast parts)

Hamid Mohammadi

QC - QA

What Is the Difference Between PAUT and Conventional UT?

Uses multiple elements (piezoelectric) instead of a single element. Uses multiple angles instead of a single angle. Can be performed without moving the probe, only along the weld. Uses multiple views simultaneously in data interpretation.

Hamid Mohammadi

QC - QA

Main Consequences of Not Preheating in Welding

Weld cracking: severe temperature differences between the weld zone and the base metal create tensile stresses and longitudinal, transverse, or subsurface cracks. Excessive hardness: especially in carbon and alloy steels, the HAZ becomes too hard and brittle. Lack of penetration: because the metal is cold, the molten pool solidifies too quickly and adequate penetration is not achieved. Porosity: gases do not have time to escape and become trapped in the weld. Distortion: contraction and expansion differences cause bending and deformation of the part. Hydrogen embrittlement: in high-carbon steels, lack of preheating causes hydrogen accumulation and cold cracking.

Hamed Changizi

CEO

Main Consequences of Not Performing Stress Relief

Delayed cracks: high residual stresses cause cracks that may appear hours or days later. Distortion of the part: internal stresses cause unwanted deformation, especially in large structures. Reduced fatigue life: the part fails sooner under cyclic loading. Stress concentration in the weld zone: causes premature failure in service. Reduced impact resistance: especially in alloy steels, toughness decreases. Reduced dimensional stability: machined parts later deform. Increased risk of brittle fracture: especially in high-carbon steels or thick parts.