/ Von Laffert services to ATW orbital welding fittings

ATW orbital welding fittings

ATW orbital welding fittings guarantee maximum process reliability when connecting stainless steel pipes in sensitive and demanding plant areas and make a significant contribution to minimising maintenance work and downtimes.

Thanks to their precise dimensional accuracy and clean internal geometry, they offer optimum gas tightness and minimise flow losses. They are also ideal for use in the pharmaceutical industry, food technology, semiconductor production and plant engineering.

Clean welded joints thanks to ATW orbital welding technology

Reproducible automatic welding joints using ATW orbital welding technology guarantee clean, resilient, highly reliable, dead volume and transition-free joints between pipe and moulded part.

Variants, materials and quality assurance

In addition to classic orbital weld fittings, such as concentric and eccentric reducers, T-pieces, elbows and end caps, we also offer customised products and variants according to customer specifications.

To ensure traceability and quality, every component is tested to guarantee purity and weldability in the long term and certified in accordance with ISO EN 10204 3.1.

Our ATW orbital weld fittings therefore fulfil the high demands of modern plant engineers and plant operators as well as apparatus manufacturers who value durability, safety and technical precision.

For users who want to design their pipe systems precisely, the page Technical data detailed information on materials, tolerances and surfaces. This allows you to match the right ATW orbital welding fittings directly to your requirements.

/ Von Laffert overview of our ATW orbital welding fittings

Perfect welded joints for the highest demands

Here you will find, in addition to the necessary pipes, the weld fittings in metric, inch tube-imperial and ISO dimensions and, on request, in special dimensions.

T-pieces with tangent extensions

Passage                Departure
6.00 × 1.00 mmno matter
8.00 × 1.00 mmindifferent / 6.00 × 1.00 mm
8.00 × 1.50 mmno matter
10.00 × 1.00 mmindifferent / 8.00 × 1.00 mm / 6.00 × 1.00 mm
10.00 × 1.50 mmno matter
12.00 × 1.00 mmindifferent / 10.00 × 1.00 mm / 8.00 × 1.00 mm / 6.00 × 1.00 mm
12.00 × 1.50 mmno matter
12.00 × 2.00 mmindifferent / 6.00 × 1.00 mm
14.00 × 1.00 mm12.00 × 1.00 mm
15.00 × 1.50 mmindifferent / 12.00 × 1.00 mm / 10.00 × 1.00 mm
18.00 × 1.50 mmequal / 12.00 × 1.00 mm / 10.00 × 1.00 mm / 6.00 × 1.00 mm
22.00 × 1.50 mmindifferent / 18.00 × 1.50 mm / 15.00 × 1.50 mm / 12.00 × 1.00 mm
23.00 × 1.50 mmindifferent / 18.00 × 1.50 mm / 12.00 × 1.00 mm
28.00 × 1.50 mmequal / 23.00 × 1.50 mm / 18.00 × 1.00 mm / 12.00 × 1.00 mm
28.00 × 1.50 mmindifferent / 10.00 × 1.00 mm / 8.00 × 1.00 mm / 6.00 × 1.00 mm
35.00 × 1.50 mmindifferent / 28.00 × 1.50 mm
 
6.35 × 0.91 mmno matter
9.53 × 0.91 mmno matter
12.70 × 1.22 mmno matter
19.05 × 1.22 mmindifferent / 12.70 × 1.22 mm
25.40 × 1.65 mmindifferent / 19.05 × 1.22 mm
T-pieces with tangent extensions

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elbow with tangent extensions

Dimension               Degree angle         Bending radius
6.00 × 1.00 mm90 and 45°15 mm
8.00 × 1.00 mm90 and 45°24 mm
8.00 × 1.50 mm90 and 45°24 mm
10.00 × 1.00 mm90 and 45°24 mm
10.00 × 1.50 mm90 and 45°24 mm
12.00 × 1.00 mm90 and 45°38 mm
12.00 × 1.50 mm90 and 45°38 mm
15.00 × 1.50 mm90°50 mm
18.00 × 1.50 mm90 and 45°35 mm
22.00 × 1.50 mm90 and 45°67 mm
23.00 × 1.50 mm90 and 45°35 mm
28.00 × 1.50 mm90 and 45°50 mm
35.00 × 1.50 mm90 and 45°55 mm
6.35 × 0.89 mm90 and 45°14.3 mm
9.53 × 0.89 mm90 and 45°24 mm
12.70 × 1.22 mm90 and 45°38.1 mm
19.05 × 1.22 mm90 and 45°26 mm
25.40 × 1.65 mm90 and 45°38.1 mm
elbow with tangent extensions

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Concentric reducers with tangent extensions

Passage.             Departure
8.00 × 1.00 mm6.00 × 1.00 mm
10.00 × 1.00 mm8.00 × 1.00 mm
10.00 × 1.00 mm6.00 × 1.00 mm
12.00 × 1.00 mm10.00 × 1.00 mm
12.00 × 1.00 mm8.00 × 1.00 mm
12.00 × 1.00 mm6.00 × 1.00 mm
14.00 × 1.00 mm10.00 × 1.00 mm
15.00 × 1.00 mm12.00 × 1.00 mm
15.00 × 1.00 mm8.00 × 1.00 mm
15.00 × 1.00 mm6.00 × 1.00 mm
15.00 × 1.50 mm12.00 × 1.00 mm
15.00 × 1.50 mm10.00 × 1.00 mm
15.00 × 1.50 mm8.00 × 1.00 mm
15.00 × 1.50 mm6.00 × 1.00 mm
18.00 × 1.50 mm12.00 × 1.00 mm
18.00 × 1.50 mm10.00 × 1.00 mm
18.00 × 1.50 mm8.00 × 1.00 mm
18.00 × 1.50 mm6.00 × 1.00 mm
22.00 × 1.50 mm18.00 × 1.50 mm
22.00 × 1.50 mm15.00 × 1.50 mm
22.00 × 1.50 mm12.00 × 1.50 mm
22.00 × 1.50 mm12.00 × 1.00 mm
23.00 × 1.50 mm18.00 × 1.50 mm
23.00 × 1.50 mm15.00 × 1.50 mm
23.00 × 1.50 mm12.00 × 1.50 mm
23.00 × 1.50 mm12.00 × 1.00 mm
23.00 × 1.50 mm10.00 × 1.00 mm
23.00 × 1.50 mm8.00 × 1.00 mm
23.00 × 1.50 mm6.00 × 1.00 mm
28.00 × 1.50 mm23.00 × 1.50 mm
28.00 × 1.50 mm22.00 × 1.50 mm
28.00 × 1.50 mm18.00 × 1.50 mm
28.00 × 1.50 mm15.00 × 1.50 mm
28.00 × 1.50 mm12.00 × 1.50 mm
28.00 × 1.50 mm12.00 × 1.00 mm
35.00 × 1.50 mm28.00 × 1.50 mm
35.00 × 1.50 mm23.00 × 1.50 mm
35,00 × 1,50 m

In addition, all standard dimensions up to 4” OD and the ISO dimension series up to 114.3 mm are available.

We are happy to supply you with other dimensions, also in dimensional jumps, e.g. from ISO to OD dimension, in addition to fittings also pipe manifolds, as customised production.

Concentric reductions

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For pharmaceutical, biotechnology, genetic engineering, solvent and chemical supplies

Processing: ATW orbital welding technology, detachable clamp connections, pipes in accordance with DIN 17457/ DIN 11850/ 11866, DF 3, or ASTM A-270 or ASME BPE, material: DIN 1.4435/ AISI 316 L, tolerances: EN ISO 1127: D4/ T3, internal roughness Ra <= 0.8 my weld included, alternatively 0.8/ 1.6 my or electrochemically polished, available.

Clamp and ATW orbital weld fittings made from welded pipes

DN Metric ISO Tube imperial
DN 8 10,00 × 1,00 13,50 × 1,60 9,53 × 0,91
DN 10 12,00 × 1,00 13,00 × 1,50 17,20 × 1,60 12,70 × 1,65
DN 15 19,00 × 1,50 21,30 × 1,60 19,05 × 1,65
DN 20 23,00 × 1,50 26,90 × 1,60 25,40 × 1,65
DN 25 29,00 × 1,50 33,70 × 2,00
DN 32 35,00 × 1,50 42,40 × 2,00 38,10 × 1,65
DN 40 41,00 × 1,50 48,30 × 2,00 50,80 × 1,65
DN 50 53,00 × 1,50 60,30 × 2,00
DN 65 70,00 × 2,00 76,10 × 2,00 76,20 × 1,65
DN 80 85,00 × 2,00 88,90 × 2,30
DN 100 104,00 × 2,00 114,30 × 2,30 101,60 × 2,11

Other dimensions on request

Welded stainless steel tubes

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