Rolf Engg Solutions carries a full range of carbon and alloy pipe in seamless & welded types. Rolf carries a wide range of Carbon & Alloy Steel Pipe with big diameter api pipes & heavy wall api pipes.
ROLF ENGINEERING SOLUTIONS stocks a wide variety of carbon steel & alloy steel pipes & tubes in seamless, welded, erw, efw, efsw, hsaw, dsaw & lsaw types. The grade stocked by Rolf Engg Solutions includes ASTM & API standard grades in various high tensile & critical applications.
API 5L - GRADE B PSL1, X42 PSL1, X46 PSL1, X52 PSL1, X56 PSL1, X60 PSL1, X65 PSL1, X70 PSL1, X80 PSL1, X100 PSL1
API 5L - GRADE B PSL2, X42 PSL2, X46 PSL2, X52 PSL2, X56 PSL2, X60 PSL2, X65 PSL2, X70 PSL2, X80 PSL2, X100 PSL2
ASTM A671/A671M GRADE CA 55, CB 60, CB 65, CB 70, CC 60, CC 65, CC 70
ASTM A672/A672M GRADE A 45, A450, A55, B60, B65, B70, C55, C60, C65, C70
ASTM A53/A53M GRADE A & B IN TYPE E,F & S.
ASTM A106/A106M GRADE A,B & C.
ASTM / ASME A333 / SA333 Grade 1 3 4 6 7 8 9 10 11 – Low Temperature Carbon Steel Seamless Pipes
ASTM A335 GRADE P1, P5, P11, P12, P91
ASTM A691/ASME A691: CM-65, CM-70, CM-75, CMSH-70, CMS-75, CMSH-80, 1/2 CR, 1CR, 11/4 CR,
21/4 CR, 3CR, 5CR, 9CR, 91
ASTM A335/ASME A335: P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P24, P36, P91, P92, P122, P911
ROLF ENGINEERING stocks API & ASTM standard pipes with NACE MR0175, NACE MR0103, HIC, SSC, Offshore Service, Sour Service, SOHIC, SCC certified materials with certifications which include EN 10204 3.1, EN 10204 3.2 etc. the stock ranges includes pipes from around the world with Japanese origin, European Origin, Korean origin, Indian Origin, USA origin, African origin pipes & tubes in seamless, saw, erw, efw, efsw type materials.
Inspection & Testing Service
HIC to NACE MR0175
Sulphide Stress Cracking (SSC)
Ultrasonics to BS/EN/ASME Standards
Charpy Impacts
Through Thickness Tensile (TTT)
Tensile
Bend Test
Tests on Post World Heat Treated (PWHT) Samples
Elevated Temperature Tests
Re-certification by producing mills
Check Analysis
Hardness
We also do Third Party Inspection (TPI) with the following : Lloyds, EIL, TUV, SGS, Jacob H & G, Bax Council, Mecon, PDIL, DNV, UDHE, Toyo, GL, BV, Veloci, ABS, BARC, Intertek.
We are able to provide the following material testing services both in-house and by NAMAS approved test houses.
| Middle East | Asia | South America | North America | Europe | Africa |
| Saudi Arabia | Singapore | Argentina | USA | Russia | Nigeria |
| Iran | Malaysia | Bolivia | Canada | Norway | Algeria |
| Iraq | Indonesia | Brazil | Mexico | Germany | Angola |
| UAE | Thailand | Chile | Panama | France | South Africa |
| Qatar | Vietnam | Venezuela | Costa Rica | Italy | Libya |
| Bahrain | South Korea | Colombia | Puerto Rica | United Kingdom | Egypt |
| Oman | Japan | Ecuador | Trinidan & Tobago | Spain | Sudan |
| Kuwait | Sri Lanka | Guyana | Jamaica | Ukraine | Equatorial Guinea |
| Turkey | Maldives | Paraguay | Bahamas | Netherland | The Republic of Congo |
| Yemen | Bangladesh | Uruguay | Denmark | Belguim | Gabon |
| Syria | Mayanman | Greece | |||
| Jordan | Taiwan | Czech Republic | |||
| Cyprus | Combodia | Portugal | |||
| Hungary | |||||
| Albania | |||||
| Austria | |||||
| Swizterland | |||||
| Slovakia | |||||
| Finland | |||||
| Ireland | |||||
| Croatia | |||||
| Slovenia | |||||
| Malta |
Third Party Inspection
We also do third party inspection with the following : Lloyds, EIL, TUV, SGS, Jacob H & G, Bax Council, Mecon, PDIL, DNV, UDHE, Toyo, GL, BV, Veloci, ABS, BARC, Intertek
We have ready stock available for following brands : API 5L Pipes Tenaris, Dalmine - Italy | API 5L Pipes Nippon Steel & Sumitomo Metal Japan | API 5L Pipes Sumitomo Japan | API 5L Pipes Salzgitter Mannesmann Brazil | API 5L Pipes JFE Steel Corporation Japan | API 5L Pipes Vallourec France | API 5L Pipes Maharashtra Seamless Ltd India | API 5L Pipes Jindal Saw Ltd India | API 5L Pipes Welspun India | API 5L Pipes Mukut Tanks & Vessel Ltd - India | API 5L Pipes Tubacex - Spain | API 5L Pipes ArcelorMital - Romania.
| API PSL1 Line Pipe | API 5L Offshore Service Welded Pipe |
| API PSL2 Line Pipe | API ERW Pipe |
| API Seamless Pipe | API PSL1 ERW Pipe |
| API PSL1 Seamless Pipe | API PSL2 ERW Pipe |
| API PSL2 Seamess Pipe | API HFW Pipe |
| API Welded Pipe | API PSL1 HFW Pipe |
| API PSL1 welded Pipe | API PSL2 HFW Pipe |
| API PSL2 Welded Pipe | API SAW Pipe |
| API 5L PSL1 Pipe | API PSL1 SAW Pipe |
| API 5L PSL1 Seamless Pipe | API PSL2 SAW Pipe |
| API 5L PSL1 Welded Pipe | API LSAW Pipe |
| API 5L PSL2 Pipe | API PSL1 LSAW Pipe |
| API 5L PSL2 Seamless Pipe | API PSL2 LSAW Pipe |
| API 5L PSL2 Welded Pipe | API HSAW Pipe |
| API 5L Sour Service Pipe | API PSL1 HSAW Pipe |
| API 5L Sour Service Seamless Pipe | API PSL2 HSAW Pipe |
| API 5L Sour Service Welded Pipe | API DSAW Pipe |
| API 5L Offshore Service Pipe | API PSL1 DSAW Pipe |
| API 5L Offshore Service Seamless Pipe | API PSL2 DSAW Pipe |
API Line Pipes
API Line Pipe is steel pipe used for the transmission of Oil, Gas and Petroleum Distillates.
Line pipes makes the pipeline and is different from casing and tubing
Line Pipes are manufactured as per specifications established by American Petroleum Institute (API). API 5L is a specification of API which defines the standard for the dimension, physical, mechanical and chemical properties of the steel. Several pipe mills around the globe manufacture the API 5L pipes for Oil and Gas industry.
Products Stocked & Supplied:
• Longitudinal Submerged Arc Welded [L-SAW] Pipes
• Helical / Spiral Submerged Arc Welded [H-SAW] Pipes
• Longitudinal with Circumferential Seam Submerged Arc Welded Pipes
• Seamless pipes
| StE 210.7US API 5L PSL -1 | Germany DIN 17172 | |
| Grade | Grade | |
| A25 | L175 | - |
| A | L210 | StE 210.7 |
| B | L245 | StE 240.7 |
| X42 | L290 | StE 290.7 |
| X46 | L320 | StE 320.7 |
| X52 | L360 | StE 360.7 |
| X56 | L390 | StE3850.7 |
| X60 | L415 | StE 415.7 |
| X65 | L450 | StE 445.7 |
| X70 | L485 | StE 480.7 |
Material # |
EN 10208-2 |
DIN 17172 |
NFA |
UNI |
BS |
UNE |
API 5L |
JIS |
1.0457 |
L245NB |
StE 240.7 |
Gr. B |
|||||
1.0484 |
L290NB |
StE 290.7 |
X 42 |
|||||
1.0582 |
L360NB |
StE 360.7 |
X 52 |
|||||
1.8972 |
L415NB |
StE 415.7 |
X 60 |
|||||
1.0418 |
L245MB |
StE 240.7 TM |
Gr. B |
|||||
1.0429 |
L290MB |
StE 290.7 TM |
X 42 |
|||||
1.0578 |
L360MB |
StE 360.7 TM |
X 52 |
|||||
1.8973 |
L415MB |
StE 415.7 TM |
X 60 |
|||||
1.8975 |
L450MB |
StE 445.7 TM |
X 65 |
|||||
1.8977 |
L485MB |
StE 480.7 TM |
X 70 |
|||||
1.8978 |
L555MB |
X 80 |
SEAMLESS CARBON STEEL PIPE
Seamless carbon steel pipe has, as its name implies, no longitudinal weld seam. It is, in essence, one solid homogeneous piece of steel. A solid billet is simply heated and then stretched over a series of mandrels until the pipe has achieved its desired diameter and wall thickness. Typically seamless carbon steel pipe fourteen inches and greater in diameter are rolled from shells which expand the diameter and reduce the wall until the desired dimensions are achieved. Sizes smaller than fourteen inches in diameter are typically stretch reduced whereby the diameter is gradually reduced and the wall relatively increased via a series of rolls. There is also a cold forming process for seamless pipe production, but such manufacturing processes are typically reserved for different alloys. Being that there is no seam, seamless carbon steel pipe is typically used in high pressure applications. Common seamless specs include; API5LB, A106, A333
ELECTRIC RESISTANCE WELD (ERW)
Early carbon steel pipe producers employed a manufacturing method called butt-welding. The butt-welding process was quite elementary in that it merely rolled a piece of heated steel plate into tubular form and created a longitudinal weld through compression and direct heat. In 1922 the Fetz Moon Tube Company instituted the first continuous weld line where by rolled up coils of steel (again, imagine a toilet paper roll made of steel) could be unrolled, leveled, and continuously fed down a line of rolls which would slowly bend the steel into shape eventually to a point where the ends could be butt-welded. When the mill came to the end of a coil, they could simply weld it to the beginning of the next coil with little interruption to production. As industry called for tighter tolerances and better welds, the continuous butt-weld process gave way to electric resistance welding (ERW). ERW is quite similar to the continuous weld process in that coils of steel are leveled and fed down a line of forming rolls, but that is where the similarities end. During the ERW process the unrolled coils (skelp) are not heated and the longitudinal weld is created by way of an electric current. The weld is then electronically inspected for defects, normalized so as to maintain consistency with the rest of the steel, and cooled. At this point the pipe is sometimes resized and then cut, coated, and or tested to meet the desired specifications. ERW pipe typically holds much tighter tolerances and maintains surface and wall consistency much more than seamless carbon steel pipe. Common ERW specs include; API5LB, A53, and A500
DOUBLE SUBMERGED ARC WELD (DSAW)
The double submerged arc weld (DSAW) process is similar to that of the ERW process in that coils of carbon steel are unrolled in a continuous ribbon. As the DSAW method of manufacturing is typically used for larger diameter pipe, the method of roll forming the skelp is similar to but not exactly like that of ERW. DSAW pipe is typically either pyramid rolled (three angled OD rolls in the shape of a pyramid form the pipe) or rolled using the U-O-E process (skelp is first subject to a "U" shaped press, followed by a "O" shaped press). The most prominent difference between ERW and DSAW carbon steel pipe is the longitudinal weld. The DSAW arc weld is submerged in a flux media to keep the weld from being exposed to ambient contaminants. Also, both the OD and the ID of the pipe is welded, typically at separate times creating a situation where one weld consumes the other creating a higher quality weld. DSAW carbon steel pipe is easily distinguishable due to its prominent and consistent ID and OD weld seam. Common DSAW specs include; API5l, A252, and A139.
SPIRAL WELD
The most easily distinguishable manufacturing method for carbon steel pipe is spiral weld. In this process the weld is created in the exact same manner as that of DSAW, only the weld seam takes on a helical or spiral appearance due to the way the skelp is rolled to form. Just as in the case with the ERW and DSAW process, a continuous ribbon of skelp is leveled and sent through a series of rolls to form. In the case of the spiral weld process a simple three roll bend is typical and thus makes for faster, more efficient, and less costly manufacturing process. The spiral weld process also allows the mill to roll a much wider range of sizes than DSAW or ERW mills. Also, due to its axial symmetry, spiral weld carbon steel pipe has an inherent ability to maintain straightness. Common spiral weld specs include; API5LB and A252.
Application Industry:
Oil and Gas Pipeline
• Cross Country Oil & Gas Pipelines
• Spur Lines
• City Gas Distribution
• Refinery & Petrochemical – High Temperature & Low Temperature Pipes
Power Plant
• Cooling Water Line & Auxiliary Cooling Water Line
• Ash Handling Line
Water & Sewerage
• Distribution and Transmission Lines for Irrigation Systems
• Pipes for Potable Water
• Drainage Pipes
Structural
• Piling and Casing Pipes
• Structural Columns
Other Industrial
• Pipes for Fertilizer Plant
• Mining Pipes
• Dredging Pipes
• Air Duct Piping
• High Mast Pipes for Wind Mill Towers
Structural Applications
We supply welded (SAW, ERW/HFI) and seamless tubular and hollow sections suitable for conductor pipe, riser pipe, tendon pipe, jacket members and other structural onshore and offshore applications.
Typical Stock Size Range* (size range might differ based on material grade):
Seamless pipe – 1 ½”- 32” (38.1mm – 812.8mm)
SAW – 18”- 100” (457mm – 2540mm)
ERW – 1” – 26” (33.4mm – 660.4mm)
Process Applications
We provide seamless and welded pipe for onshore, offshore, midstream, power and downstream applications, including line pipe, pipe for high temperature and pressure environments, abrasion resistant and HDPE pipe.
Typical Stock Size Range* (size range might differ based on material grade):
Seamless pipe - ¼”- 32” (13.7mm – 812.8mm)
Welded pipe – ¼” - 100” (13.7mm – 2540mm)
*Larger sizes and project specific dimensions manufactured to order.
Pressure Equipment Directive (PED) and NACE MRO 0103 and MRO 0175 as applicable.
Coating Standard:
• ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water
• ISO 21809 Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems
• DIN 30670 Polyethylen coatings of steel pipes and fittings
End:
• square ends (straight cut, saw cut, and torch cut);
• beveled for welding (All line piping is square cut to the tolerance specified and bevelled to ANSI B16.25. An angle of 30º (-0º, +5º) and a landing of 1,6 mm, ±0,8 mm is applied. Schedule 160 material is supplied without bevelling.)
Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE)
Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Hardness Test, Blow Test, Impact Test, etc.), Exterior Size Inspection, Hydrostatic Test(The standard pressure is limited to 20,7 MPa (3000 psi)), X-ray Test.
Mill Test Certificate: EN 10204/3.1B
Third party inspection: SGS, BV, Lloyds etc.
Carbon Steel Pipe
| Material Specification | Grades |
| EN 10225 | S355G15, S460G6 |
| BS 7191 | 355EM |
| API 5L | Grade B, X42, X52, X56, X60, X65, X70, X80, X100 |
| ASTM A519 | SAE 4130, 4140 |
| ASTM/ASME A/SA53 A/SA106 | Grade A, B, C |
| ASTM A252 | Grade 2, 3 |
| ASTM/ASME A/SA333 | Grade 6 |
| Material Specification | Grades |
| API 5L | X52, X56, X60, X65, X70, X80 |
| CSA Z245.1 | 359, 414, 448, 483 |
| ASTM / ASME A/SA53 | Grade A, B |
| ASTM / ASME A/SA106 | Grade B, C |
| ASTM A252 | Class 2, 3 |
| EN 10216-2 Seamless (Material No. WNr) | P235GH (1.0345), P265GH (1.0425) |
| EN 10217-5 Welded (Material No. WNr) | P235GH (1.0345), P265GH (1.0425) |
| Material Specification | Grades |
| ASTM / ASME A/SA333 | 6 |
| EN 10216-3 (Material No. WNr) | P215NL (1.0451), P355N (1.0562), P355NH (1.0565), P355NL1 (1.0566), P275NL1 (1.0488), P275NL2 (1.1104), L290NB (1.0484), L360NB (1.0582) |
| ASTM / ASME A/SA 671/672 | Grade 60, 65, 70 |
| High Temperature Seamless Pipe | ASTM A 106 Gr B/C, API 5L Gr B, ASTM A 53 Gr B |
| Heat Exchanger Seamless Tube | ASTM A179 |
| Low Temperature Seamless Pipe | ASTM A333 Gr 6 |
| Low Temperature Seamless Tube | ASTM A334 Gr 6 |
| High Yield Seamless Pipe | API 5L Gr. X42/X46/X52/X56/X60/X65/70X/80 PSL-1/PSL-2 |
| High Yield Seamless Pipe | ISO 3183 Gr L245, L290, L320, L360, L415, L450, L485 |
| Atmospheric & Low Temp EFW Pipes | ASTM A671 Gr. CC60/CC65/CC70 |
| High Pressure & Moderate Temp EFW Pipes | ASTM A672 Gr. B60/B65/B70/C55/C60/C65/C70 |
| High Yield ERW / SAW Pipe | API 5L Gr. X42/X46/X52/X56/X60/X65/70X/80 PSL-1/PSL-2 |
| High Yield ERW / SAW Pipe | ISO 3183 Gr L245, L290, L320, L360, L415, L450, L485 |
ADDITIONAL TESTING
NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR etc.
PSL |
Delivery Condition |
Pipe Grade/Steel Grade |
PSL 1 |
As-rolled, normalizing rolled, normalized or normalizing formed |
L175 or A25 |
L175P or A25P |
||
L210 or A |
||
As-rolled, normalizing rolled, thermomechanical rolled, thermomechanical |
L245 or B |
|
formed, normalizing formed, normalized, normalized and tempered, or, if |
||
agreed, quenched and tempered for SMLS pipe only. |
||
As-rolled, normalizing rolled, thermomechanical rolled, thermomechanical
formed, normalizing formed, normalized and tempered or
quenched and tempered |
L290 or X42 |
|
L320 or X46 |
||
L360 or X52 |
||
L390 or X56 |
||
L415 or X60 |
||
L450 or X65 |
||
L485 or X70 |
||
PSL 2 |
As-rolled |
L245R or BR |
L290R or X42R |
||
Normalizing rolled, normalizing formed, normalized or normalized and |
L245N or BN |
|
tempered |
L290N or X42N |
|
L320N or X46N |
||
L360N or X52N |
||
L390N or X56N |
||
L415N or X60N |
||
Quenched and Tempered |
L245Q or BQ |
|
L290Q or X42Q |
||
L320Q or X46Q |
||
L360Q or X52Q |
||
L390Q or X56Q |
||
L415Q or X60Q |
||
L485Q or X70Q |
||
L555Q or X80Q |
||
L625Q or X90Q |
||
L690Q or X100Q |
US API 5L PSL-1 |
Germany DIN 17172 |
EN 10208-2 |
D.I.N. |
B.S. |
|
Grade |
Grade |
Grade |
|||
| A25 | L175 | - | |||
| A | L210 | StE 210.7 | St. 35,8 | 3059/1-2 | |
| B | L245 | StE 240.7 | L 245NB | St. 45,8 | 3059/5-6 |
| X42 | L290 | StE 290.7 | L 290NB | ||
| X46 | L320 | StE 320.7 | L 320NB | ||
| X52 | L360 | StE 360.7 | L 360NB | ||
| X56 | L390 | StE 385.7 | L 390NB | ||
| X60 | L415 | StE 415.7 | L 415NB | ||
| X65 | L450 | StE 445.7 | L 450NB | ||
| X70 | L485 | StE 480.7 | L 485NB | ||
| X80 | L555 | L 555NB | |||
| USA | UK | GERMANY | SWEDEN |
| ASTM A 53 | BS3601 | DIN 1629 | |
| Grade A SMLS | HFS 22 & CDS 22 | St 35 | SIS 1233-05 |
| Grade B SMLS | HFS 27 & CDS 27 | St 45 | SIS 1434-05 |
| ASTM A 53 | BS3601 | DIN 1626 | |
| Grade A ERW | ERW 22 | Blatt 3 St 34-2 ERW | |
| Grade B ERW | ERW 27 | Blatt 3 St 37-2 ERW | |
| ASTM A 53 | BS3601 | DIN 1626 | |
| FBW | BW 22 | Blatt 3 St 34-2 FBW | |
| ASTM A 106 | BS3602 | DIN 17175 | |
| Grade A | HFS 23 | St 35-8 | SIS 1233-06 |
| Grade B | HFS 27 | St 45-8 | SIS 1435-05 |
| Grade C | HFS 35 | ||
| ASTM A 134 | BS3601 | DIN 1626 | |
| EFW | Blatt 2 EFW | ||
| ASTM A 135 | BS 3601 | DIN 1626 | |
| Grade A | ERW 22 | Blatt 3 St 34-2 ERW | SIS 1233-06 |
| Grade B | ERW 27 | Blatt 3 St 37-2 ERW | SIS 1434-06 |
| ASTM A 139 | BS3601 | DIN 1626 | |
| Grade A | EFW 22 | Blatt 2 St 37 | |
| Grade B | EFW 27 | Blatt 2 St 42 | |
| ASTM A155 Class 2 | BS 3602 | DIN 1626, Blatt 3 with Certification C | |
| C45 | St 34-2 | ||
| C50 | St 37-2 | ||
| C55 | St 42-2 | ||
| KC55 | EFW 28 | St 42-2 | |
| KC60 | St 42-2 | ||
| KC65 | EFW 28S | St 52-2 | |
| KC70 | St 52-2 | ||
| API 5L | BS3601 | DIN 1629 | |
| Grade A SMLS | HFS 22 & CDS 22 | St 35 | SIS 1233-05 |
| Grade B SMLS | HFS 27 & CDS 27 | St 45 | SIS 1434-06 |
| API 5L | BS3601 | DIN 1625 | |
| Grade A ERW | ERW 22 | Blatt 3 St 34-2 ERW | |
| Grade B ERW | ERW 27 | Blatt 4 St 37-2 ERW | |
| API 5L | BS 3601 Double Welded | DIN 1626 | |
| Grade A EFW | ERW 22 | Blatt 3 St 34-2 FW | |
| Grade B EFW | ERW 27 | Blatt 4 St 37-2 FW | |
| API 5L | BS3601 | DIN 1626 | |
| FBW | BW 22 | Blatt 3 St 34-2 FBW |