Type
Welded silos, tanks and vessels to drawing
The welded vessel and the steel around it: a plated silo body with outlet cones on a braced support frame, with a roof platform and a stair tower; a square silo in a frame of hollow sections; a cylindrical tank on saddles inside a container frame; a pontoon hull with bulkheads; a flanged screw conveyor tube. The seams are long and the shell is thin for its size, which decides how it is welded.
The gallery holds this type from a deck with a built-in tank of a metre and a half to a tank in a container frame of twelve metres.
What the drawing must show
A part like this is priced from the drawing. The quotation is fastest when it carries:
- The shell thickness and the material grade, and whether the vessel is pressurised or atmospheric
- The seam layout, the weld preparation and whether seams must be continuous or leak tight
- The nozzles, flanges and manways with their positions and standards
- The support structure and the lifting points
- The finish inside and outside, and the test the drawing calls for
6 models of this type
Real structures that came through this company as built jobs, quoted enquiries or designs from our own office, shown as anonymous models with their measured size. Open one for its description.
- Overall size, L x W x H
- 10 880 x 4 270 x 9 417 mm
A rectangular plated silo body tapers into two hopper cones feeding outlets, carried on a braced column and rod frame. A railed roof platform with grating sits on top, reached by a stair tower with intermediate landings at one end. It measures about 10.9 m long, 4.3 m wide and 9.4 m high. Such a part is welded out on a fixture, then machined after welding on a horizontal boring mill.
- Overall size, L x W x H
- 12 214 x 2 438 x 2 591 mm
A cylindrical tank sits on saddle supports inside a container frame, with corner posts, roof bows and corrugated end and side walls around the rolled shell. The open side here shows the tank, its saddles and the box section frame, while the roof bows span across without sheeting. It measures about 12.2 m long, 2.4 m wide and 2.6 m high. Pieces like this are run on the 14 m robotic welding track when the batch allows.
- Overall size, L x W x H
- 4 669 x 4 004 x 4 882 mm
A square silo body tapers into a pyramid cone, set in a welded frame of hollow section legs with cross bracing on four corners. Flanged top edges carry a bolted cover plate, and a hooped ladder guard with cutouts rises from one side. It measures about 4.7 by 4.0 m and stands 4.9 m high. In this hall a part like this is tacked up on a fixture and welded through, then blasted and painted before shipping.
- Overall size, L x W x H
- 4 198 x 1 547 x 1 036 mm
A welded pontoon hull is an open plate tub with a raked bow, folded rubbing strakes along both sides, a centre bulkhead, corner lifting eyes and a bollard on the stern deck. The raked bow and the folded strake lines stand out against the plain plate sides. It measures about 4.2 by 1.5 m and stands about 1.0 m high. A part like this is set on a fixture, tacked and welded out, laser cut from plate up to 20 mm and folded on the press brake.
- Overall size, L x W x H
- 6 427 x 1 480 x 1 377 mm
A screw conveyor tube with flanged branches: a long round shell with a bolted flange at each end, plus a square inlet branch and a round outlet branch angled off the main tube. Machined flange faces with bolt hole rings stand out, along with a small stub on one end plate. It measures about 6.4 m long, 1.5 m wide and 1.4 m high. Such parts are welded on the 14 m robotic track for a series, by hand for a one-off.
- Overall size, L x W x H
- 1 540 x 818 x 508 mm
A deck section built around a rectangular tank welded beneath a drilled flat plate, with a sloped, notched end wall and profiled side edges. Round flanged ports sit in the tank face, with a stub outlet and bolt holes across the deck. The sloped end plate and flanged bores stand out. It measures about 1.5 by 0.8 m, 0.5 m high. Here a part like this is tack welded on a fixture and welded out, laser cut up to 20 mm and folded on the press brake.
Each model is rendered from its own geometry in raw steel, without paint, and is shown as a still. Customer names, machine designations and drawing numbers are not published; part lists and files are not offered. The interactive model above this section is a parametric example, not one of these.
How a part like this goes through the hall
Shell plates are laser cut and rolled or folded, the seams are welded by hand or on the robotic track, and nozzles and flanges are set to the drawing. The support frame, the platform and the stair are welded as separate assemblies and trial fitted. A vessel that fits the booths is blasted and painted in house; a larger one is painted in sections. Measuring and the leak test follow the drawing.
Where this fits
Capabilities it runs through
Industries that order it
Notes from the blog
Other types in this group
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