Plum-Blossom Tube Roll Forming Line

1. Definition

A plum-blossom / quincunx tube roll forming line produces a multi-petal tube profile used in grape-trellis and horticultural applications. It is not the vine-stake / grape-strut line, not a greenhouse kerf/channel generic answer, and not door-frame equipment (even when a mislabeled file title says “grape strut”).

Industry product literature describes plum-blossom tubes as specialty cold-formed or cold-drawn multi-petal sections for agricultural and decorative structures — context for the profile name, not a substitute for ZTRFM machine ratings.

2. Reference configuration

3. Process

1. Uncoil
2. Guide
3. One pinch + 7-roll level + one pinch
4. Punch (H-hole punch stand)
5. Roll form
6. 3-roll straighten
7. Cut to length

4. Boundaries

• Do not copy vine-stake / High Precision speed bands onto plum tube
• Skip door-frame documents whose filename says “grape strut”
• Greenhouse kerf/channel FAQ answers are not plum-tube answers

5. Inquiry checklist

• Multi-petal tube drawing and H-hole pattern
• Confirm ~110 mm strip / ~1.5 mm thickness (or custom)
• Whether straighten and punch stand scope match the BOM
• PLC / electrics brand left to contract if not stated

6. Buyer FAQ

Same machine as grape strut / vine stake?

No. Strut / vine-stake is a separate line with its own BOM and (where stated) speed bands. Hole pattern here is H-type on a ~110 mm strip plum tube.

PLC brand?

Short source note does not lock a PLC brand — follow the contract proposal.

What speed should I publish?

Leave blank until a named proposal states m/min. Do not borrow vine-stake or High Precision figures.

Is this a greenhouse channel mill?

No. Answer as a grape-trellis plum-blossom tube line, even if catalog leafing sits near greenhouse products.