PIPE MATERIAL::3"-138" FOB TIANJIN: USD500-USD700/TON MATERIAL: Q235B, Q345B, API 5L, GrB, ASTM A53/A106 GR.B, X52,X60,X65.
The introduction of the spiral welded pipe (SAW ):
The specification of our products is fromΦ9 0 toΦ3500. The thickness of the wall is from 1mm to 25.4mm. The material of our products is from Q235 to X80. Besides, special material such as the stainless steel is included.
Production process:
Loading coil-uncoiling-leveling-cutting and coil welding-circle shearing-edge milling machine-main driver–prebending and guide board-forming-internal welding-external welding-tracking and cutting off-extracting-cutting to be alignment-hydrotester-pipe ends facing&chamfering-X ray inspection-UT inspection-spraying-collection of the finished products
large diameter spiral steel pipe
