AWWA C200 Gr.50 Spiral steel pipes

ASTM A572 Gr.50 Sprial steel pipes/spiral welded pipes

Hot-dipped Galvanized spiral welded pipe

EN10217-1 Spiral welded pipes

EN10219 spiral welded pipe

ASTM A139 spiral welded pipe

API 5L Spiral Welded Pipes

Spiral Steel Pipes for Structural Use