Seamless rolled rings

Seamless rolled rings

We produce seamless rolled rings, flanges and rail-vehicle tyres to the very highest standards. This expertise has made us the world-leading manufacturer of ring blanks for the animal feeds industry, wheel tyres for the rail industry and drill-pipe connectors for specialised underground engineering.

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Definition

Seamless rolled rings, flanges and wheel tyres are manufactured on high-performance radial-axial rolling machines in which two separate roll gaps (radial and axial) act on the stock. The diameter of the ring increases as a result of the wall thickness of the ring blank being reduced by radial and the ring height by axial forming. Our seamless rolled rings are notable not least of all for their extemely homogeneous microstructure and great resistance to mechanical and other stresses.

Production process

Ring blanks are produced from cast ingots, blooms, billets or other feed materials on compression forging and punching machines, followed by roll-forming to diameters of up to 4,000 mm on our radial-axial rolling machine. After the roll-forming process, the ring blanks are heat-treated and finish-machined precisely to the customer’s specification.

Benefits

Our seamless rolled rings are the perfect choice wherever the application involves extreme loads and demands compliance with high safety standards. Our production processes are especially materials-efficient because we manufacture using only minimal allowances and employ a great variety of specialist tools to achieve the specified hub and rim contours. Other notable advantages of our ring production methods include, for example, the low volume of material removed and the enhanced properties of our ring products resulting from our near-net-shape hot forming processes.

  • Up to 4,000 mm/4,000 kg
  • From one-off to large-series production
  • Hub, face and rim profiling

Die rings

Seamless rolled rings for annular and flat dies up to 4,000 mm dia. and 4,000 kg..

Material designationMaterial No.Standards 
X46Cr131.4034by agreementRequest quotation
20MnCr51.7147by agreementRequest quotation
Ohters by agreementRequest quotation
Customised die rings  Request quotation

Rail-vehicle tyres

Rail-vehicle tyre blanks up to 2,100 mm dia. and 1,200 kg.

Material designationStandards 
B1 - B6UIC810-1Request quotation
B6S / B6Zby agreementRequest quotation
M66by agreementRequest quotation
S4 / S5by agreementRequest quotation
N72 / S100 Lby agreementRequest quotation
V101by agreementRequest quotation
Excelsior / Exzellentby agreementRequest quotation
P70by agreementRequest quotation
DHTASTM A551Request quotation
KVR600by agreementRequest quotation
GOST Grade 2+4by agreementRequest quotation
Othersby agreementRequest quotation
Customised rail-vehicle tyres Request quotation

Flanges

Flange blanks up to 4,000 mm dia. and 4,000 kg.

Material designationMaterial No.Standards 
C22.8 / P250GH1.0460EN10222-2 or by agreementRequest quotation
P245GH / P265GH / P280GH1.0352 / 1.0425 / 1.0426EN10222-2 or by agreementRequest quotation
15 / 16Mo31.5415EN10222-2 or by agreementRequest quotation
13CrMo4-51.7335EN10222-2 or by agreementRequest quotation
10/11CrMo9-101.7380 / 1.7383EN10222-2 or by agreementRequest quotation
12CrMo19-51.7362EN10222-2 or by agreementRequest quotation
A105 ASTM A105 or by agreementRequest quotation
SA266 Grade 4 / SA516 Grade 70 by agreementRequest quotation
F1 / F5 / F11 / F12 ASTM A182 or by agreementRequest quotation
LF1 / LF2 Cl. 1 / LF2 Cl.2 ASTM A350 or by agreementRequest quotation
X12Cr131.4006EN10088 or by agreementRequest quotation
X20Cr131.4021EN10088 or by agreementRequest quotation
X5CrNi18-9 / 18-10 - F304 / F304L1.4307 / 1.4301EN10222-5 / ASTM A182 or by agreementRequest quotation
X2CrNi19-111.4306EN10222-5 or by agreementRequest quotation
X2CrNiMo17-12-2 - F316 / F316L1.4404EN10222-5 / ASTM A182 or by agreementRequest quotation
X6CrNiTi18-10 - F321 / F321L1.4541EN10222-5 / ASTM A182 or by agreementRequest quotation
X6CrNiMoTi17-12-2 - F316Ti1.4571EN10222-5 / ASTM A182 by agreementRequest quotation
Others by agreementRequest quotation
Customised flanges  Request quotation

Drill-pipe connectors

Seamless rolled rings for drill-pipe connectors up to 4,000 mm dia. and 4,000 kg.

Material designationMaterial No.Standards 
25CrMo41.7218EN10083 or by agreementRequest quotation
S355J21.0570EN10025 or by agreementRequest quotation
Others by agreementRequest quotation
Customised drill-pipe connectors   Request quotation

Gearwheel blanks

Seamless rolled rings for gearwheels up to 4,000 mm dia. and 4,000 kg.

Material designationMaterial No.Standards 
S355J21.0570EN10025 or by agreementRequest quotation
P355QH1/P420QH1.0571 / 1.8936by agreementRequest quotation
C451.1191EN10083 or by agreementRequest quotation
C601.1221EN10083 or by agreementRequest quotation
25CrMo41.7218EN10083 or by agreementRequest quotation
34CrMo41.7220EN10083 or by agreementRequest quotation
42CrMo41.7225EN10083 or by agreementRequest quotation
30CrNiMo81.6580EN10083 or by agreementRequest quotation
34CrNiMo61.6582EN10083 or by agreementRequest quotation
16 / 20MnCr51.7131 / 1.7147EN10084 or by agreementRequest quotation
17CrNiMo6/18CrNiMo7-61.6587EN10084 or by agreementRequest quotation
30/31CrMoV91.7707 / 1.8519EN10085 or by agreementRequest quotation
Others by agreementRequest quotation
Customised gearwheel blanks   Request quotation

Rolling-element bearing and rotary joints

Seamless rolled rings up to 4,000 mm dia. and 4,000 kg.

Material designationMaterial No.Standard 
C451.1191EN10083 or by agreementRequest quotation
C601.1221EN10083 or by agreementRequest quotation
42CrMo41.7225EN10083 or by agreementRequest quotation
100Cr61.3505by agreementRequest quotation
100CrMn6 / 100CrMnsi6-4 / 6-61.3520by agreementRequest quotation
100CrMo7-31.3536by agreementRequest quotation
18NiCrMo14-61.3533by agreementRequest quotation
Others by agreementRequest quotation
Customised rolling-element bearing and rotary joints  Request quotation

Tool-steel rings, rings for the energy sector

Seamless rolled rings up to 4,000 mm dia. and 4,000 kg.

Material designationMaterial No.Standards 
X3CrNiMo13-4 / F6NM1.4313by agreementRequest quotation
55 / 56NiCrMoV71.2714by agreementRequest quotation
X45NiCrMo41.2767by agreementRequest quotation
X37CrMoV5-11.2343by agreementRequest quotation
X40CrMoV5-11.2344by agreementRequest quotation
Others by agreementRequest quotation
Tool-steel rings, customised rings for the energy sector  Request quotation

Heat treatment options

  • Quenched and tempered (+QT)
  • Normalising annealed (+N)
  • Treated to hardness range (+TH)
  • Stress-relieving annealed (+SR)
  • Spheroidising annealed (+AC)
  • Soft-annealed (+A)
  • Ferrite-pearlite tempered (+FP)
  • Solution annealed
  • Special heat treatment (by agreement)

Machining options

  • Turning
  • Drilling
  • Milling
  • Grinding

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