CNC turned parts, milled parts, pipe connection parts and special fittings for the chemical, petrochemical and power plant industries.
MAWO Piping Specials GmbH
DüsseldorfNew on Amplifa
About us
MAWO Piping Specials GmbH is a manufacturing company in the metalworking industry based in Düsseldorf. The company manufactures CNC turned parts, CNC milled parts, pipe connection parts, special fittings, high-pressure components and custom-made specials to drawing, sample or technical specification. Production takes place on CNC-controlled turning and milling machines as well as on conventional machine tools, from individual parts to small series; in addition, complete manufacturing orders including material provision, inspection and documentation are handled. Parts are manufactured from unalloyed, alloyed, stainless and high-alloy materials; over 70 different materials are stocked in the company's own raw material warehouse. Manufacturing focuses include contour tees according to DIN EN 10253-2 Type B as well as Laval Nozzles for steam cracker plants. Customers come from the refinery, chemical, petrochemical, power plant, plant engineering and shipyard industries; manufacturing is carried out according to DIN, EN, ISO, ASME and AD 2000.
- Site
- Düsseldorf
- Processes
- CNC turning, CNC milling, Conventional machining (turning/milling), Manufacture of pipe connection parts, olets, special fittings, high-pressure fittings, Manufacture of contour tees according to DIN EN 10253-2 Type B, Manufacture of Laval Nozzles, Manufacture of flanges (slip-on flanges, threaded flanges, blind flanges, special flanges, flange, Non-destructive testing PT / Penetrant Testing (dye penetrant inspection)
- Materials
- 1.0460 / P250GH / A105 / SA105, 1.5415 / 15Mo3 / 16Mo3, 1.7335 / 13CrMo44 / 13CrMo4-5 / A182F12 / SA182F12, 1.7380 / 10CrMo910 / 11CrMo9-10 / A182F22 / SA182F22, 1.4901 / X10CrWMoVNb9-2 / A182F92 / SA182F92, 1.4903 / X10CrVNb9-1 / A182F91 / SA182F91, 1.4922 / X20CrMoV11-1, 1.4923 / X22CrMoV12-1
- Certificates
- DIN EN ISO 9001:2015, AD 2000-W0 / PED (DGRL 2014/68/EU, Annex I), ISO 9001, AD 2000-W0 / PED
- Industries
- Refinery industry, Chemical industry, Petrochemicals, Power plant industry, Plant engineering, Shipyard industry
- 01
Raw material warehouse (over 70 materials)
- 02
CNC turning
- 03
CNC milling
- 04
Conventional machining
- 05
Non-destructive testing
- 06
Acceptance inspection certificates EN 10204 3.1/3.2
- 07
Documentation and delivery
Materials and manufacturing processes
1.0460 / P250GH / A105
Unalloyed steel for pipe connection parts and flanges in general plant engineering.
1.7380 / 10CrMo9-10 / A182 F22
Alloyed heat-resistant steel, among other things the material basis for contour tees according to DIN 17243 / AD 2000-W13.
1.4903 / X10CrVNb9-1 / A182 F91
High heat-resistant steel for highly stressed power plant components.
1.4404 / 316L
Stainless austenitic steel for corrosion-stressed components.
1.4462 / Duplex F51
Duplex material for components with high corrosion resistance and strength.
1.4501 / Super-Duplex F55
Super duplex for demanding applications in the chemical and petrochemical industries.
ALLOY 800 H/HT
High-alloy nickel alloy for temperature-stressed components, e.g. in steam cracker plants.
Hastelloy C4
Nickel alloy for heavily corrosion-stressed special components.
CNC turning
Precision turned parts to drawing from individual parts to small series.
CNC milling
Milled parts and special components with tight tolerances according to customer specification.
Location
Düsseldorf
DEProduction, administration, raw material warehouse
- Lot size
- Individual parts to small series
- Materials
- Unalloyed, alloyed and stainless steels, duplex, nickel alloys
- CNC lathes
- CNC milling machines
- Conventional machine tools
- Crane systems up to 10 t load capacity
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC turningMachining | – | – | – | Individual part – Small series | Stainless steel, Duplex, alloyed steels, special materials |
| CNC millingMachining | – | – | – | Individual part – Small series | Stainless steel, Duplex, alloyed steels, special materials |
| Conventional machining (turning/milling)Machining | – | – | – | – | – |
| Manufacture of pipe connection parts, olets, special fittings, high-pressure fittingsMachining | – | – | – | – | unalloyed steels, alloyed steels, stainless steels, high-alloy materials |
| Manufacture of contour tees according to DIN EN 10253-2 Type BMachining | – | – | – | – | 1.7380, materials according to DIN 17243 / AD 2000-W13 |
| Manufacture of Laval NozzlesMachining | ≤ 2.0 Rz, max. 3.0 Rz (inner surface) | – | – | – | – |
| Manufacture of flanges (slip-on flanges, threaded flanges, blind flanges, special flanges, flangeMachining | – | – | – | – | – |
| Non-destructive testing PT / Penetrant Testing (dye penetrant inspection)Testing | – | – | – | – | – |
| 100 % surface crack testing according to EN 10228-2, quality class QK 3Testing | – | – | – | – | – |
| Ultrasonic testing for laminations at weld ends according to DIN EN ISO 10893-8, test class U2Testing | – | – | – | – | – |
| Burst testingTesting | – | – | – | – | – |
| Testing with acceptance inspection certificate EN 10204 3.1 / 3.2 (TÜV acceptance)Testing | – | – | – | – | – |
| Contract manufacturing / complete manufacturing orders incl. material provision and documentationEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe | – | – | – | – | Düsseldorf |
| CNC milling machine | – | – | – | – | Düsseldorf |
| Conventional machine tool | – | – | – | – | Düsseldorf |
| Crane system (up to 10 t load capacity) | – | – | – | – | Düsseldorf, Wiesenstraße 51 |
Additional services
Quality
Quality assurance is carried out according to DIN EN ISO 9001:2015 and AD 2000-W0 / PED (DGRL 2014/68/EU, Annex I). Testing options include dye penetrant testing (PT), surface crack testing according to EN 10228-2 QK 3, ultrasonic testing according to DIN EN ISO 10893-8, burst testing as well as acceptance inspection certificates according to EN 10204 3.1/3.2 with TÜV acceptance.
| Evidence | Düsseldorf |
|---|---|
| ISO 9001 | |
| AD 2000-W0 / PED |