spiral weld pipe mill

Production Flow of Spiral discontinuous welded pipe line

Forming section:

Raw coil loading → uncoiling→peeling and straightening → pinching → seven-rollers leveling → electrical centering → shearing and butt-welding → electrical centering → edge milling No.1 → edge milling No.2 → surface cleaning → manual centering → main driver feeding → edge prebending and guide board → manual centering before forming → forming and sizing → inside welding → outside welding → cut to length → pipe moving out → pipe pulling off

Finishing section:

Welding flag cleaning→Hydro-tester→repairing welding→endfacing&beveling→finished product inspection→collecting

Production Flow of

Production Flow of Spiral continuous welded pipe line

Production flow:

Forming section:

Hang coil→ prepare coil →uncoiling →pinching & leveling →lateral strip guide 1 → straighten →lateral strip guide 2 →shearing & butt-weld →lateral strip guide3 →pinch→ lateral strip guide 4 →accumulator →Electric vertical roll 1→Transition roll → electric vertical roll 2→ tension roller →electric vertical roll 3 →primary edge milling →electric vertical roll 4 → panel cleaning → electric vertical roll 5 → fine edge milling → electric vertical roll 6 → panel cleaning →plate edge steel brush cleaning → electric vertical roll 7→ delivery → bending → forming→ internal and external welding→ pipe cutting→ pipe out

Finishing section:

Slag removal→ repair welding →UT→ X-ray flaw detection →cutting head sampling→ pipe end facing → inside and outside weld seam grinding→ pipe expander→hydraulic test→repair welding→ultrasonic inspection→pipe end shooting → chamfering →appearance inspection→weighing measuring→ spray mark→storage

Note: the above process of production is for your reference only, the final process will be changed and decided by the customer

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