Industrial solutions

Precision welding.
Built around your system.

Orbital-welded assemblies, vacuum cooling products, and freeform bent and welded tubing for semiconductor equipment, research systems and industrial installations.

01 Orbital welding 02 Vacuum cooling products 03 Freeform bending & welding

Vacuum components & welded piping

The joint. The circuit.
The geometry.

Start with the application: a precision tube joint, a vacuum cooling connection, or a custom route through a compact equipment layout.

Explore the three product areas below, then share your drawing, operating conditions and connection requirements with our team.

Discuss your application →

01 / PRECISION TUBE JOINING

Orbital-Welded Assemblies

Tube and fitting assemblies with drawing-defined joints and connection layouts. Explore branch lines, flanged interfaces, manifolds and integrated piping assemblies in the supplied examples.

Straight and bent tube layouts with branches and mixed end connections
Specify material, tube dimensions, joint geometry and cleanliness requirements
Define weld inspection, leak testing and system integration requirements

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View 9 more product photos

Click a photo to view it at full size. Final specifications are confirmed against the selected drawing.

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02 / VACUUM COOLING PRODUCTS

Vacuum Cooling Products

Explore vacuum cooling connection assemblies through the product photos below: flanged connections, bent tubing, bellows sections and multi-port welded manifolds.

Custom routing with flanged ends, branches and auxiliary connections
Assembly layouts combining formed tubing and selected bellows sections
Share your drawing, medium, operating conditions, connection dimensions and test requirements for product selection

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Bent bellows assembly with side fittings

Click a photo to view it at full size. Product dimensions, materials and operating ratings are confirmed against the selected drawing.

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03 / CUSTOM SPATIAL ROUTING

Freeform Bent & Welded Products

Custom-shaped tubes, manifolds and welded assemblies arranged around the available installation space. Explore coiled paths, return bends, branching layouts and combinations of rigid and flexible sections.

Define three-dimensional routing, bend radii, angles and end orientations
Combine branches, manifolds and selected flexible sections to suit the design
Share a drawing or 3D model, materials, tolerances and operating conditions

Discuss this product area →

View 9 more product photos

Bent piping with braided flexible sections

Cylindrical welded assembly with fittings

Parallel cylindrical assembly with header piping

Custom box assembly with welded connections

Click a photo to view it at full size. Final specifications are confirmed against the selected drawing.

View Freeform Bent & Welded Products details →

Product examples from the supplied brochure and vacuum cooling photos.

The three product areas use the supplied product photographs, grouped by product category. Final geometry, material, weld procedure and acceptance tests are defined for each project.

Supporting components & specifications

Hoses, bellows & connection references.

Explore existing connection families and dimensional references for component selection alongside a welded assembly.

KF Vacuum Hoses & Formed Bellows ISO Clamp-Type Formed Bellows Bolted-Flange Vacuum Bellows Weld-End Vacuum Bellows — VP Specialty-Gas Flexible Hoses Sanitary Flexible Hoses Custom Bellows Assemblies Vacuum Flanges & Standard Components Corrugated Tubing Stock Prefabricated Vacuum Piping

KF hose and formed-bellows assemblies · Product illustration; refer to confirmed drawings for specifications.

01 / QUICK-CLAMP CONNECTIONS

KF Vacuum Hoses & Formed Bellows

Flexible vacuum connections with KF-style clamp ends. The catalogue includes conventional flexible tubes and thin-wall formed bellows in 304 and 316L stainless steel.

Flexible tubes accommodate bending, vibration, angular and lateral movement.
Formed bellows provide flexibility and axial movement within the specified design limits.
Select by connection dimensions, free length, bend radius and movement requirements.

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KF flexible tubes — dimensional reference

KF flexible tubes — dimensional reference
Model	ID	OD	A	B	C	Wall thickness	Min. bend radius
F.KF10	10.5	15.2	30	12.2	18	0.15	30
F.KF16	20.3	29	30	17.2	18	0.2	70
F.KF25	26	35	40	26.2	18	0.2	90
F.KF40	40	52	55	41.2	18	0.25	120
F.KF50	54	67	75	52.2	18	0.25	140
F.KF65	63	80	87	70.2	22	0.25	150
F.KF80	78.5	102	114	83	22	0.25	220
F.KF100	101	126	134	102	22	0.25	280

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

KF formed bellows — dimensional reference

KF formed bellows — dimensional reference
Model	ID	OD	A	B	C	Wall thickness	Movement notation
B.KF16	20	30.5	30	17.2	18	0.15	± (E × 14%)
B.KF25	25.3	36	40	26.2	18	0.15	± (E × 16%)
B.KF40	39.5	54	55	41.2	12.7	0.15	± (E × 22%)
B.KF50	49.5	65	75	52.2	15	0.15	± (E × 23%)
B.KF65	62.7	82	87	70.2	15	0.15	± (E × 26%)
B.KF80	78.5	102	114	83	22	0.2	± (E × 26%)
B.KF100	101	126	134	102	22	0.2	± (E × 27.5%)

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection. E denotes the free length in the source drawing; confirm permissible travel and fatigue conditions.

02 / CLAW-CLAMP FLANGE CONNECTIONS

ISO Clamp-Type Formed Bellows

Formed bellows with ISO clamp-type vacuum flange connections. The supplied catalogue identifies 304 and 316L for both bellows and flanges.

Catalogue model designations run from ISO-63 to ISO-320.
Confirm flange interface, free length and permissible motion.
Nominal designations are reproduced as printed, including ISO-150.

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ISO formed bellows — dimensional reference

ISO formed bellows — dimensional reference
Model	ID	OD	A	B	C	Wall thickness
ISO-63	62.7	82	95	70.2	12	0.2
ISO-80	78.5	102	110	83	12	0.2
ISO-100	101	126	130	102	12	0.2
ISO-125	125	153	155	127	12	0.3
ISO-150	149	176.2	180	153	12	0.25
ISO-200	200	240	240	213	12	0.4
ISO-250	250	302	290	261	12	0.4
ISO-320	300	351	370	318	17	0.4

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection. Source model labels are retained; flange compatibility must be checked against a drawing.

03 / FIXED BOLT-HOLE INTERFACES

Bolted-Flange Vacuum Bellows

Vacuum bellows with bolted flange connections. The catalogue lists 304 flange material and 304 or 316L bellows material.

Two dimensional series are shown: GB/T 6070 and VG.VF-JIS.
Specify the bolt circle, hole count, hole diameter and sealing interface.
A bolted flange connection is not a threaded tube-end fitting.

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Bolted flanges — source series GB/T 6070

Bolted flanges — source series GB/T 6070
Size	ID	OD	A	PCD	C	Wall thickness	Holes (N)	Hole dia. (D)
80	78.5	102	145	125	12	0.2	8	9
100	101	126	165	145	12	0.2	8	9
160	149.3	176.2	225	200	16	0.25	8	11
200	200	240	285	260	16	0.4	12	11
250	250	302	335	310	16	0.4	12	11
320	300	351	425	395	20	0.4	12	14

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

Bolted flanges — source series VG.VF-JIS

Bolted flanges — source series VG.VF-JIS
Size	ID	OD	A	PCD	C	Wall thickness	Holes (N)	Hole dia. (D)
40	39.5	54	105	85	10	0.15	4	10
50	49.5	65	120	100	10	0.15	4	10
65	62.7	82	145	120	10	0.2	4	12
80	78.5	102	160	135	12	0.2	4	12
100	101	126	185	160	12	0.2	8	12

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection. Standard editions and certification have not been provided.

VP weld-end vacuum bellows · Product illustration; refer to confirmed drawings for specifications.

04 / WELD-IN PIPING CONNECTIONS

Weld-End Vacuum Bellows — VP

Flexible tubes and formed bellows with weld ends for integration into vacuum piping. The VP catalogue page identifies 304 and 316L for end connections and bellows.

Select end dimensions A, B and C against the supplier drawing.
Define installed length, alignment and weld procedure.
The catalogue describes vacuum inside and atmospheric pressure outside.

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VP weld ends — dimensional reference

VP weld ends — dimensional reference
A	B	C
6	4	30
6.35	4	30
8	6	30
9.52	7.52	30
10	8	30
12	9.4	30
12.7	9.4	30
19.05	15.75	40
25.4	22.1	40
38.1	35.1	40
42.7	37.1	20
50.8	47.8	21
60.5	57.2	20
63.5	60.2	20
76.2	72.2	20
89	81	20
101.6	97.6	20
108	100	20
133	129	20
159	151	20
219	209	25
275	263	25
355	343	25

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

05 / 316L CONNECTIONS AND BELLOWS

Specialty-Gas Flexible Hoses

Flexible hose configurations for specialty-gas piping, including compression-fitting connections. The catalogue specifies 316L for the connections and corrugated tube.

Listed connection sizes: 1/4 in, 3/8 in, 1/2 in and 3/4 in.
Discuss gas compatibility, cleanliness and connection geometry.
Confirm cleaning, packaging and qualification requirements for the actual application.

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Specialty-gas hose — listed connection sizes

Specialty-gas hose — listed connection sizes
Size (in)	Catalogue equivalent (mm)
1/4	6.35
3/8	9.52
1/2	12.7
3/4	19.05

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

Braided sanitary flexible hose · Product illustration; refer to confirmed drawings for specifications.

06 / FOOD-PROCESSING APPLICATIONS

Sanitary Flexible Hoses

The supplier catalogue includes braided corrugated hoses intended for sanitary food-processing applications.

Listed sizes: 1/2 in, 1 in, 1.5 in and 2 in.
Confirm contact materials, weld finish and cleaning requirements.
No sanitary certification is implied by the product-category name.

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Sanitary hose — listed sizes

Sanitary hose — listed sizes
Size (in)	Catalogue equivalent (mm)
1/2	12.7
1	25.4
1.5	38.1
2	50.8

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

Custom bellows and bent-pipe assembly · Product illustration; refer to confirmed drawings for specifications.

07 / PROJECT-SPECIFIC GEOMETRY

Custom Bellows Assemblies

Non-standard bellows assemblies combine flexible sections, bends and different end connections. Dimensions are determined by the project requirements.

Share an engineering drawing, installed envelope and connection details.
Define media, vacuum or pressure conditions, temperature and movement.
Mixed-flange and bent-pipe configurations require drawing review.

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Vacuum flange connection component · Product illustration; refer to confirmed drawings for specifications.

08 / CONNECTION-SYSTEM ACCESSORIES

Vacuum Flanges & Standard Components

The catalogue shows flanges, centering components, clamps, blanking components, elbows and tees for vacuum piping.

304 and 316L are identified in the supplier flange discussion.
Select flange series, dimensions and sealing components together.
Supplier workshop and machining photographs are not AT Merchant Solutions facilities.

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Corrugated tubing profile · Product illustration; refer to confirmed drawings for specifications.

09 / FOR HOSE AND BELLOWS FABRICATION

Corrugated Tubing Stock

Vacuum corrugated tubing is described as precision stainless strip welded into thin-wall tube and then hydraulically formed.

The catalogue shows flexible-tube and formed-bellows profiles.
Stock designations cover 6 through 320, with several alternate profiles.
Confirm the profile, material grade and downstream fabrication requirements.

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Corrugated tubing stock — dimensional reference

Corrugated tubing stock — dimensional reference
Model / size	ID	OD	Wall thickness
6	6	9.5	0.15
8	7.8	11	0.15
10	10.5	15.2	0.15
15	15	20	0.2
20	20.5	29	0.2
20-1	20	30	0.15
25	25.4	36	0.15
25-1	26.2	36	0.2
40	39.5	54	0.15
40-1	40	52	0.25
50	49.5	65	0.15
50-1	54	67	0.25
65	62.7	82	0.25
65-1	62.5	82	0.2
80	78.5	102	0.2
80-1	78	102	0.25
100	101	126	0.2
100-1	100.7	126	0.25
125	125	153	0.3
150	149.3	176.2	0.25
150-1	149	176.2	0.4
200	200	240	0.4
250	250	302	0.4
320	300	351	0.4

Dimensions in mm unless stated otherwise. A, B, C, D, E and L are supplier drawing symbols; confirm the corresponding drawing before selection.

10 / DRAWING-BASED PIPING ASSEMBLIES

Prefabricated Vacuum Piping

The source includes examples of small vacuum-system piping assemblies, stainless tube preparation and precision TIG welding.

Use drawings to define routing, end connections and installation clearances.
Specify inspection, leak testing, cleanliness and packaging requirements.
Fabrication scope and supplier capabilities require project confirmation.

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Technical notes from the supplied catalogue

The KF, ISO, bolted-flange and VP pages describe internal vacuum and external atmosphere. Their temperature notation is “below 250°”; confirm the temperature unit, seal material and actual assembly rating before use.

The KF page lists a leak-rate notation of < 5 × 10⁻⁹ Pa·m³/s. Test method, conditions and configuration were not supplied, so this is a catalogue reference rather than a verified acceptance guarantee.

Dimensions are transcribed from the supplied Chinese catalogue photographs. Some descriptive text is cropped at the page edge; incomplete claims have been omitted. Lengths, tolerances, pressure ratings, cycle life, certifications and current availability require a confirmed product drawing or specification.

Applications

Vacuum infrastructure for demanding processes.

Semiconductor & display equipment

Vacuum-system connections and flexible sections for semiconductor production, display manufacturing and precision vacuum equipment.

Exhaust & analytical systems

Connection requirements in exhaust assemblies, analytical instruments and other vacuum installations.

Research & industrial systems

The source also lists particle accelerators, fusion research, nuclear-energy facilities, petrochemical and building applications. Suitability needs application review.

Additional catalogue category: communications waveguide bellows

The supplied catalogue also shows rectangular brass bellows for communications waveguides, described as hydraulically formed. These are a separate electrical waveguide component family; dimensions and detailed text are incomplete in the supplied photograph.

Let’s discuss your next project.

Share your application, drawings and technical requirements.

Discuss your project ↗

Precision welding.Built around your system.

The joint. The circuit.The geometry.

Orbital-Welded Assemblies

Vacuum Cooling Products

Freeform Bent & Welded Products

Hoses, bellows & connection references.

KF Vacuum Hoses & Formed Bellows

ISO Clamp-Type Formed Bellows

Bolted-Flange Vacuum Bellows

Weld-End Vacuum Bellows — VP

Specialty-Gas Flexible Hoses

Sanitary Flexible Hoses

Custom Bellows Assemblies

Vacuum Flanges & Standard Components

Corrugated Tubing Stock

Prefabricated Vacuum Piping

Technical notes from the supplied catalogue

Vacuum infrastructure for demanding processes.

Semiconductor & display equipment

Exhaust & analytical systems

Research & industrial systems

Let’s discuss your next project.

Precision welding.
Built around your system.

The joint. The circuit.
The geometry.