Consumable Inserts

Consumable inserts are used for ensuring positive root penetration and for desirable contour. These are used for critical weld joints of high piping installations. All inserts conform to ASME SEC II Part C, SFA – 5.30

Materia CS SS NI L A Steel
Grades IN MS – 1 IN 308L / IN 309L / IN 316L / IN 347 IN 60 / IN 82 On request
Available Shapes Inverted T / Y / Flat Inverted T / Flat Flat Flat
Form of Supply Pre-formed Rings Open / Butt & 16MCoil Pre-formed Rings Open / Butt Pre-formed Rings open / butt Pre-formed Rings open / butt
  Legend Groove type Insert Classes    
Classes 1 and 4 Class 2 Classes 3 and 5
Root opening, “gap” G A,B,C W+0.8 mm max W+0.8 mm max W+0.4 mm max
Pipe ID mismatch* Y A 0 to 0.8 mm max 0 to 1.6 mm max 0 to 0.8 mm max
Pipe ID mismatch* Y BC 0 to 0.8 mm max 0 to 1.6 mm max 0 to 2.4 mm max
Radius of groove face R C 2.4 mm to 3.2 mm    
Root face L B 2.4 mm ÷ 0.08 mm    
Root face M C 2.4 mm 0.4 mm    
Extension of root lip X C 4.8 mm minute    
ID distance shaved Z C 3.2 mm minute    
*amount inside diameter is offset or out-of-round, mm