Rotate pipe and weld vertically

Pipe not rotated weld verticality

Pipe not rotated and pipe axis 450

Pipe welded 12'o clock to 6'o clock downhill

Dia 1.6 mm

Dia 3.0 mm

Dia 3.5 mm

Dia 4.0 mm

Dia 2.5 mm

Dia 3.15 mm

Dia 4.00 mm

Dia 5.00 mm

Brinell test

Tensile test

Charpy izod test

Ultrasonic inspection

Full preheating

Local preheating

Direct preheating

Indirect preheating