PFW series small and medium diameter straight pipe flange four spot welding
Model specification
Pfw-12 / 16 / 24, applicable pipe diameter specifications are respectively Φ 40-325 / Φ 40-426 / Φ 60-630mm;
Equipment use
The four spot welding of medium and small diameter straight pipe flange is mainly used for the fillet welding of straight pipe flat welding flange and butt welding of straight pipe high neck flange in coal mine, anti-corrosion, shipbuilding, petrochemical, chemical industry, iron tower and other industries.
welding technology
Gas protection (GMAW)
Argon arc (TIG / hot wire TIG)
□ TIG / hot wire TIG + GMAW
Other
Arrangement mode
One end fixed one end moving □ two ends fixed □ two ends moving
Welding quality:
The welding line is even and beautiful without appearance defects;
The qualification rate of grade I or II welds in radiographic or ultrasonic testing is more than 98%;
 meet the requirements of pressure test or impact, tensile, bending and other mechanical properties inspection.
The plug-in fillet welding shall meet the requirements of fillet height dimension and pressure test;
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