{"id":7729,"date":"2026-11-12T16:44:01","date_gmt":"2026-11-12T08:44:01","guid":{"rendered":"https:\/\/belirollforming.com\/product\/downspout-roll-forming-machine\/"},"modified":"2026-11-12T17:56:03","modified_gmt":"2026-11-12T09:56:03","slug":"downspout-roll-forming-machine","status":"publish","type":"product","link":"https:\/\/belirollforming.com\/ru\/product\/downspout-roll-forming-machine\/","title":{"rendered":"Downpipe and Downspout Roll Forming Machine"},"content":{"rendered":"
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A downspout roll forming machine turns coated steel coil into a finished rainwater downpipe in one continuous line. Coil goes in at one end. A formed, seamed and cut-to-length pipe comes out at the other. The same downspout roll forming machine can also make elbows and shrunk ends, either on the line or at a separate station.<\/p>\n

Buyers use two names for this product. Downpipe roll forming machine is common in the UK, Australia and the Middle East. Downspout roll forming machine is common in North America. They describe the same downspout roll forming machine. We build both round downpipes and rectangular downspouts in the same machine family.<\/p>\n

Beli Rollforming has made custom roll forming machines since 2005. We have delivered 500+ machines to 50+ countries from a 15,000 m\u00b2 factory. Each downspout roll forming machine is laid out around the profile drawing you send, not around a catalogue model.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Round downpipes and rectangular downspouts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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A round downpipe is the classic rainwater pipe from a downspout roll forming machine. The strip folds into a closed circle and the seam sits at the top of the section where the fixings hide it. Sizes in our current drawing set run from Round 80 to Round 130. The round shape drains well and needs the fewest forming passes.<\/p>\n

A rectangular downspout gives a flat face to the wall and a sharper look on modern buildings. It is also easier to pack and to fix to a bracket. Our rectangular drawings include the LSG 125×100 section and the YX75-101 section. Both carry shallow ribs along the flat faces. The ribs stiffen a thin wall without adding thickness.<\/p>\n

Octagonal sections sit between the two. The Octagon 400 drawing shows a ribbed corner profile. It gives the stiffness of a shaped section with the water capacity of a round pipe. All three shapes run on one downspout roll forming machine with a tooling change. All eight sections below close with a small overlap at the top of the profile.<\/p>\n

The table lists the eight sections in the current CAD set. Designation is the drawing name in that set. Final dimensions, coil width and pass count are fixed by your own profile drawing.<\/p>\n\n\n
Drawing<\/th>\u0424\u043e\u0440\u043c\u0430<\/th>Designation<\/th>\u0422\u043e\u043b\u0449\u0438\u043d\u0430 \u043f\u043e\u043b\u043e\u0441\u044b<\/th><\/tr><\/thead>\n
p01<\/td>Round<\/td>Downpipe Round 130<\/td>0,5 \u043c\u043c<\/td><\/tr>\n
p02<\/td>\u041f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u044b\u0439<\/td>Downpipe LSG 125×100<\/td>0,6 \u043c\u043c<\/td><\/tr>\n
p03<\/td>Octagonal<\/td>Downpipe Octagon 400<\/td>0,5 \u043c\u043c<\/td><\/tr>\n
p04<\/td>\u041f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u044b\u0439<\/td>Downpipe YX75-101<\/td>0.8 mm<\/td><\/tr>\n
p05<\/td>Round<\/td>Downpipe Round 88<\/td>0,5 \u043c\u043c<\/td><\/tr>\n
p06<\/td>Round<\/td>Downpipe Round 92<\/td>0,5 \u043c\u043c<\/td><\/tr>\n
p07<\/td>Round<\/td>Downpipe Round 100<\/td>0,5 \u043c\u043c<\/td><\/tr>\n
p08<\/td>Round<\/td>Downpipe Round 80<\/td>0,5 \u043c\u043c<\/td><\/tr>\n<\/tbody>\n<\/table>\n

Five round sizes, two rectangular sections and one octagonal section are in this set. Strip thickness runs from 0.5 to 0.8 mm. A downpipe roll forming machine for a new market usually starts from one of these drawings and then changes to the local size.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Eight downpipe sections drawn for this downspout roll forming machine family. Five round, two rectangular and one octagonal. STEP and DXF files for each section are available on request.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Rectangular\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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The LSG 125×100 rectangular downspout section. The ribbed flat walls and rounded corners are formed in the same pass sequence as the round pipes.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Getting from a section drawing to a stable pipe on a downspout roll forming machine is a roll pass design problem. The flower pattern, stand spacing and seam closing rolls all come from the profile, not from the machine size. Our engineering notes set out that sequence step by step.<\/p>\n

\u041a\u0430\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043c\u0430\u0448\u0438\u043d\u0430 \u0440\u043e\u043b\u0438\u043a\u043e\u0432\u043e\u0433\u043e \u0444\u043e\u0440\u043c\u043e\u0432\u0430\u043d\u0438\u044f<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Inline elbow or offline elbow<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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An elbow joins the downpipe to the gutter outlet or turns the pipe around an eave. You can make it on the downspout roll forming machine or on a separate machine. The choice changes labour, floor space and how fast you can change a size.<\/p>\n

With an inline elbow station, the formed pipe runs through a bending head before the flying cut. One operator runs the whole downspout roll forming machine. The elbow angle and bend radius come from the tooling set. This suits long runs of one angle, usually 45, 60, 75 or 90 degrees. An inline elbow on a downspout roll forming machine removes a whole handling step.<\/p>\n

With an offline elbow machine, straight pipes leave the downspout roll forming machine and go to a separate bending cell. One downspout roll forming machine can feed two or three elbow machines. You gain freedom on angle, radius and batch size. You also add one operator and one handling step. Job shops that serve many roof designs usually pick this route.<\/p>\n

The photographs below show both routes for round downpipes and for rectangular downspouts. The ribbed blue and black samples are elbows made on the machine behind them, not bought-in fittings.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Inline shrinking or offline shrinking<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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A shrunk end, sometimes called a swaged end, is a short reduced diameter at one end of the pipe. One pipe then slides into the next one. Installers use fewer separate couplings and the joint sheds water.<\/p>\n

On an inline shrinking station of a downspout roll forming machine, a hydraulic die forms the reduced end before the cut. Timing comes from the same line encoder as the shear. The pipe leaves the line ready to install. This is the usual choice when a downpipe roll forming machine runs one diameter for a full shift.<\/p>\n

On an offline shrinking machine, cut pipes are fed one at a time into a standalone press. One press can serve several pipe sizes with a die change. It is slower per piece, but it keeps the downspout roll forming machine simple and lets you shrink only the batches that need it.<\/p>\n

Elbow and shrinking choices are independent. Four configurations cover most plants.<\/p>\n\n\n
\u041a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f<\/th>Elbow station<\/th>Shrunk end station<\/th>\u0422\u0438\u043f\u0438\u0447\u043d\u043e\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435<\/th><\/tr><\/thead>\n
1<\/td>\u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438<\/td>\u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438<\/td>One pipe size, long runs, one operator, finished parts off the line<\/td><\/tr>\n
2<\/td>\u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438<\/td>Offline<\/td>Fixed elbow angle, several pipe diameters sharing one shrinking press<\/td><\/tr>\n
3<\/td>Offline<\/td>\u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438<\/td>Many elbow angles, one pipe diameter, coupling-free installation<\/td><\/tr>\n
4<\/td>Offline<\/td>Offline<\/td>Job shop work, many profiles, small batches, frequent size changes<\/td><\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Configuration 1 puts the most work on the downspout roll forming machine and gives the lowest labour per part. Configuration 4 keeps the most flexibility. Output planning has to start from the real cycle time of the elbow and shrinking stations, not from the top speed on the nameplate.<\/p>\n

\u0420\u0430\u0441\u0447\u0451\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u043a\u0440\u0443\u043f\u043d\u043e\u0441\u0435\u0440\u0438\u0439\u043d\u043e\u043c \u0440\u043e\u043b\u0438\u043a\u043e\u0432\u043e\u043c \u0444\u043e\u0440\u043c\u043e\u0432\u0430\u043d\u0438\u0438<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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