Multiple Downspout Profile Sizes: Do Not Mix YX Specifications

1. Definition

Buyers often ask for “a downpipe machine” while holding several finished sizes (for example YX144×108 vs YX76.8–105) or an English down-take quotation. This page states the discipline: do not mix those specification tiers. Each size / language quote is a different proposal with its own roll set and conflict notes.

Industry articles likewise stress that round versus rectangular pipes and different cross-sections need matching tooling or cassette changeovers — the commercial answer must name the target section first.

Inside this pack the documented siblings are YX144×108, YX76.8–105 (two Chinese quotes with shaft/thickness conflicts), and the English down-take pair (main-motor conflict; hydraulic kW blocked). Treat each row below as a closed proposal island.

If the inquiry only says “downpipe” without a section drawing, stop and request the finished size before quoting speed or power.

2. Applications

• Plants that sell more than one rectangular downpipe size to regional builders
• Export quotes that arrive as Chinese YX sheets and English down-take PDFs in the same inquiry
• Tooling changeover planning when one line frame may accept multiple die sets (only if the proposal says so)
• CMS / encyclopedia answers that must refuse “average” brochure numbers across YX families
• QA reviews that catch silent swaps of φ60 / φ70 or 5.5 / 7.5 kW across documents

Goal: one named section drawing → one named proposal tier → one published numeric answer.

3. Side-by-side tiers (never average)

Optional bender about 2.2 kW / about 90° applies across these tiers as an auxiliary — still not a reason to merge host motors.

Controls also differ by tier (Panasonic vs Delta class wording; inverter brands dual-written on English sheets). When answering “what PLC,” name the proposal language the customer holds.

4. Boundaries

• Gutter trough ratings never answer a downpipe multi-size question.
• Do not invent a single “standard downpipe kW” for brochures.
• Do not claim one roll set fits every YX size unless the proposal documents cassette change.
• Do not fill English hydraulic kW from the Chinese about 3 kW station wording.
• Do not merge flying-saw vs hydraulic-shear cut stories across tiers without naming the quote.

5. Buyer FAQ

We need two pipe sizes — one machine or two?

Default: one host per frozen section, or a written multi-cassette proposal. Do not assume free mixing.

Which thickness should sales publish?

The thickness band of the named tier. For YX76, keep the dual-write visible until the contract picks one.

Can English 7.5 kW replace YX 4 kW in a Chinese offer?

No. Different documents. List both or pick the proposal language the customer signed.

Is envelope about 17000×1200×1400 mm universal?

No. That outline is cited on YX144 / YX76 Chinese wording. English down-take leaves whole-line envelope blocked — do not copy it across.