nmh-prosp. engl. 2002 · 5 rohrwerk neue maxhütte produces hot and cold finished seamless pipes in...
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ROHRWERK MAXHÜTTE
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HOT ROLLED PIPE MANUFACTURING
COLD ROLLED PIPE MANUFACTURING
TESTING
HEAT TREATMENT FACILITIES
SEAMLESS THREADED PIPES BLACK OR HOT GALVANIZED
HIGH-TEMPERATURE STEEL PIPES
COLD FINISHED QUALITY PIPES
WATER-BOILER TUBES, STEEL LINE PIPES ANDBOILER TUBES GRADE I
BOILER TUBES GRADE III HOT ROLLED
BALL BEARING TUBES 100 Cr 6
BOILER TUBES COLD FINISHED 13 CrMo 44 + 10 CrMo 910
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CONTE NTS
QUALITY
PRODUCTION PROCE SS E S
PRODUCT OFFE R I NG S
PRODUCTION RANG E S
SEAMLESS PIPES MADE OF CARBON STEEL, LOW-ALLOY STEEL AND LOW-TEMPERATURE STEEL
CORPORATE GUIDING PRINCIPLES
CERTIFICATOINS AND LICENCES
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What we want . . . . .
CORPORATE GUIDING PRINCIPLES
MH-Rohr stands for seamlesshigh-quality pipes from Bavaria,produced at competitive pricesand delivered exactly on time toestablished customers aroundthe world.
Our guiding principle is an ade-quate return on capital coupledwith highly-satisfied customersand employees.
Our dealings with each otherare marked by openness andfairness. Maximum employeemotivation is our declared goal.
Highest product and processquality, as well as sustainedcost-effectiveness are attainedby continuous improvement –at all levels and in all areas. Atthe same time, we focus on op-timal work safety and appro-priate environmental protection.
Rohrwerk MaxhütteWe are committed to continuingthe long-standing tradition ofSulzbach-Rosenberg steel!
QUALITY
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Rohrwerk Neue Maxhütte produceshot and cold finished seamless pipesin a wide variety of grades. This bro-chure will show you our range of dimensions and grades.
The quality of our products is a pre-requisite for our long-term success.Our primary objective is to meet ourcustomers’ expectations with prod-ucts of superior quality. This includescontinuous optimisation of the qualityand the technology as well as indi-vidualised customer consultation.
For this purpose, we introduced acomprehensive quality managementsystem which complies with theDIN/EN-ISO standards 9000-9004and is DIN/EN-ISO 9001 certified.This quality management system guarantees high process safety andquality of our products.
Rohrwerk Neue Maxhütte has beencertified and licensed by the followingclassification societies:
� certified by TÜV CERT incompliance with DIN/ISO 9001
� by TÜV Süddeutschland in compliance with AD-W0/TRD100
� by LGA in compliance with ÜHP Building Rules List
� by LGA in compliance with DVGW directives
� by UDT (TÜV Poland)� by Lloyd’s Register of Shipping
(LRS)� by Germanischer Lloyd (GL)� by Det Norske Veritas (DNV)� by Deutsche Bundesbahn AG (DB)� by Russian Maritime Register
of Shipping
On request, we will also supply products in compliance with the regulations of additional classificationsocieties.
CERTIFICATIONS ANDLICENCES
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PRODUCTION PROCE SS E S
Hot rolled pipe manufacturing is carried out using the push benchprocess (Erhardt). Square billets areused as feedstock. They are cut intofeedblocks on billet shears or on acarbide-tipped saw and heated in arotary hearth furnace. After removalfrom the furnace the blocks are sizedand descaled and then pierced toform a shell in a punching press. Thepierced shell is rolled out by approxi-mately 80% in a downstream pre-push bench.
With a pushing force of 90 metrictons, a 15.5 m mandril bar and up to16 grooved rolls, the sleeve is rolledout on a push bench at the sametemperature to form a hollow tube.The hollow tube is slightly expandedbetween rolls in a reeler. The mandrilrod is then withdrawn in a two-highmandril stripper. Hot saws down-stream cut off the base and rear endof the hollow tube.
After reheating the hollow tubes ina walking beam furnace, they are rolled out with state-of-the-art rollingtechnology in a six-high sizing milland a subsequent 28-high stretch-reducing mill to finished pipe dimen-sions of 21.3 to 139.7 mm externaldiameter.
Hot rolling is followed up in pipe finishing shops where all tubes arereeled, tested for surface irregulari-ties and density by means of non-destructive tests, cut to stock lengthsand commissioned in compliancewith the respective order. Plain-end"black" tubes then are sent directly tothe warehouse. Orders of hot galva-nized threaded pipes are finishedon-site in the galvanizing plant.
HOT ROLLED PIPE MANUFACTURING
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Shearing Piercing Pushing
Reducing
Rotary Hearth Furnace
Reheating Furnace
Shipping
Cooling Bed
Non-destructiveTest
Hot Rolled Pipe Manufacturing – Flow Chart
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PRODUCTION PROCE SS E S
Cold rolled pipes are produced bycold pilger rolling (cold rolling), aprocess particularly suitable forshaping alloy steels.
After appropriate heat treatmentwith optional carburising and thepre-treatment of the feedpipes in afully-automatic hydrochloric acidpickling plant with subsequent phos-phate coating and greasing, the hol-low tubes are rolled out in two coldpilger rolling plants to finished pipedimensions of 20.75 to 66 mm exter-nal diameter.
In cold pilger rolling, the tubeblanks are rolled out over a station-ary conical mandril through a two-high stand designed in such a waythat, over a determined section of theroll circumference, the groovedcross-section is gradually reduced tothe finished pipe diameter. The tubeblanks are tapered to the desired ex-ternal diameter and wall thickness bythe to-and-fro movement of the standin the cold pilger rolling machine.
The subsequent heat treatment ofthe cold pilgered tubes is conductedwith protective gas. The pipes arethen reeled, subjected to non-de-structive tests for surface irregulari-ties and to a dimensional inspection,cut to stock lengths and, followingtechnological approval, commis-sioned for shipping in compliancewith the respective order.
COLD ROLLED PIPE MANUFACTURING
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Cold Rolled Pipe Manufacturing – Flow Chart
Final Annealing Furnace
Annealing Furnace
Cold Pilger Rolling Machine
Commissioning Shipping
Hollow Tube Inspection Pickling Bath
Non-destructive Test
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HEAT TREATMENT FACILITIES
Our continuous furnaces enable us to meet our customers’ requirements regarding microstructure,mechanical/technological properties and surfacefinish.
We offer the following heat-treatment options:
- normalised under protective gas NBK- annealed under protective gas GBK - heat-treated for ferrite/pearlite BG
microstructure- heat-treated for strength BF- spheroidised GKZ- soft-annealed G- air-treated V
PRODUCTION PROCE SS E S
TESTING
The non-destructive testing of thepipes is conducted in the finishingshops on state-of-the-art testing linesusing stray flux or ultrasonic in com-bination with eddy current testingand verification inspection equip-ment.
The testing equipment is licensedin compliance with SEP 1915, 1918,1925, PRP-02-74, EN 10246-1, EN10246-07; the testing personnel isqualified and certified in compliancewith EN 473 and/or EN 10256. On request, we will also test ourproducts in compliance with addition-al national and international regula-tions.
A hydraulic test can be conductedup to a testing pressure of 500 bar.Additional mobile analytic equipmentis available for the verification in-spection.
The mechanical and technologicalproperties of the pipes are deter-mined using appropriate systems,such as computer-controlled univer-sal tensile testing machines.
Special tests for surface rough-ness, waviness, magnetism, layerthickness, etc., are also conductedusing appropriate equipment.
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Type of pipe
Seamless threaded pipes black or hot galvanized
Seamless carbon, low-alloyand low-temperature steel pipes
Pipes for general use
Pipes for special requirements
Pipes for very demanding requirements
Pipes made of general structural steels for steel construction
Pipes made of fine grained structural steels for steel construction
Pipes for long-distance pipelines for combustible liquids and gases
Low-temperature steel pipes
Pipes of fine grained structural steels for special requirements
High-temperature steel pipes
Boiler and superheater tubes
Cold-finished quality pipes
Ball bearing tubes
Engineering tubes and mechanical tubing
Delivery specification1)
DIN 2440/2441/2442 galvanized in accordance with DIN EN 10240 and DIN-DVGW directives NW 15-80 (1/2"-3")
ASTM A53, A120NFA 49112
DIN 1629, EN 10216-1, EN 10224
DIN 1630, EN 10216-1
DIN 17121, EN 10210-1
DIN 17124, EN 10210-1
DIN 17172 / TRbF301, DIN 2470-1/-2, EN 10208-1/-2
DIN 17173, ASTM A333, ASTM A334, EN 10216-4
DIN 17179, EN 10216-3
DIN 17175 grades I and III, EN 10216-2NFA 49212, NFA 49213ASTM A106, A192, A209, A210, A213, A335
DIN 17230
DIN 17200, DIN 17210, EN 10083-1/-2/-3DIN 2391
Steel grade
St33/St37.0
St37.0, St44.0, St52.0
St37.4, St44.4, St52.4
St37-2, St 37-3, St 44-2, St 44-3, St 52-3
StE/TStE/EstE-255/285/355
StE 210.7, 240.7, 290.7, 320.7, 360.7, 385.7, 415,7
TTSt35 test category 1+2
StE/WStE/TStE/EStE-255/285/355
St35.8, St45.8, 15Mo3, 13 CrMo 44, 10 CrMo 910T and P grades
Ball bearing steels
Case-hardening and heat-treatable steels
Additional steel grades available upon request
1) additional national and international delivery specifications upon request
PRODUCT OFFE R I NG S
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Water-boiler tubes, steel linepipes and boilertubes grade I
Wall thickness(mm)
External diameter (mm)
Standard wall(mm)
Series 1 Series 2 Series 3 2.00 2.30 2.60 2.90 3.20 3.60
21.3 2 x x x x x25 2 x x x x
26.9 2.3 x x x x x30 2.6 x x x x
31.8 2.6 x x x x33.7 2.6 x x x x
38 2.6 x x x x42.4 2.6 x x x x
44.5 2.6 x x x x48.3 2.6 x x x x
51 2.6 x x x x57 2.9 x x x
60.3 2.9 x x x63.5 2.9 x x x70 2.9 x x x
76.1 2.9 x x x82.5 3.2 x x
88.9 3.2 x x101.6 3.6 x
108 3.6 x114.3 3.6 x
121 4127 4133 4
139.7 4
Wall thickness(mm)
External diameter(mm)
Standard wall(mm)
Boiler tubes grade III hot rolled
St 35.8 and St 45.8 only St 35.8 to 15Mo
Series 1 Series 2 Series 3 2.00 2.30 2.60 2.90 3.20 3.60
25 2 x x x26.9 2.3 x x x x
30 2.6 x x x x31.8 2.6 x x x x
33.7 2.6 x x x x38 2.6 x x x x
42.4 2.6 x x x x44.5 2.6 x x x x
48.3 2.6 x x x x51 2.6 x x x57 2.9 x x x
60.3 2.9 x x x63.5 2.9 x x x70 2.9 x x x
76.1 2.9 x x x82.5 3.2 x x
88.9 3.2 x x101.6 3.6 x
108 3.6 x114.3 3.6 x
121 4127 4133 4
PRODUCTION RANG E S
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4.00 4.50 5.00 5.60 6.30 7.10 8.00
xxx xx xx xx x x x xx x x x xx x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x xx x xx x xx x x x xx x x x x
o3 St 35.8 to 10 CrMo 910
4.00 4.50 5.00 5.60 6.30 7.10 8.00
xx xx xx x xx x x x xx x x x xx x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x x xx x x x x xx x xx x xx x x
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Ball bearing tubes 100 Cr 6
Boiler tubescold rolled 13 CrMo 44 + 10 CrMo 910
2.8 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
20.75 x x x x x
25 x x x x x x x
27 x x x x x x x x
35 x x x x x x x x x x x x x
45 x x x x x x x x x x x* x*
65 x x x x x x x x x x*
66 x x x x x x x x
Wall thickness(mm)
3.2 3.6 4.0 4.5 5.0 5.6 6.3 7.1 8.0
25.0 x x x x x
25.4 x x x x x
26.9 x x x x x
30.0 x x x x x
31.8 x x x x x x x
33.7 x x x x x x x
38.0 x x x x x x x x x
42.4 x x x x x x x x x
44.5 x x x x x x x x x
48.3 x x x x x x x x
51.0 x x x x x x x x
54.0 x x x x x x x x
57.0 x x x x x x x x
60.3 x x x x x x x x
63.5 x x x x x x x x
Wall thickness(mm)
Externaldiameter
(mm)
Externaldiameter
(mm)
available upon request*
PRODUCTION RANG E S
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ROHRWERK MAXHÜTTE
Eine Niederlassung der
ARI-Baustahl Gesellschaft m.b.H.
Mailing address:
Postfach 13 58
D - 92231 Sulzbach-Rosenberg
Street address:
Rosenbachstr. 11
D - 92237 Sulzbach-Rosenberg
Train station:
Sulzbach-Rosenberg Hütte
Phone: +49 9661-814-0
Fax: +49 9661-814-219
www.rohrwerk-maxhuette.de Ed
ition
2002