Process and Line Pipes in TROUVAY & CAUVIN yard

Process and Line Pipes

Fittings and Flanges

TROUVAY & CAUVIN is able to supply a wide range of process and line pipes in CS, SS and AS seamless and welded (ERW, HFW, LSAW, SSAW), as well as a complete range of the corresponding forged and buttweld fittings such as elbows, tees, reducers, caps and branches. We also supply a full range of flanges up to 20,000 psi.

All our material is sourced from reputed mills with which TROUVAY & CAUVIN has close relationships. In addition, TROUVAY & CAUVIN has a stock of around 15,000 MT at various locations at all times, ensuring we can fulfill fast-track or shortage requirements in a timely manner.

Thanks to our long-standing experience, we are able to meet any specific project requirement, be it a technical specification, a material coating, an inspection or logistical services.

Seamless and Welded Pipes

icon for seamless pipes

TROUVAY & CAUVIN can supply Seamless and Welded pipes in all grades of Carbon Steel, Stainless Steel,  and Alloy Steel according to EN, ASTM and API standards. Diameter  range from 1/8” to 26” for Seamless pipes and from1/8” to diameters over 80” for welded pipes

Seamless Pipes

Type Specification Grades
CS Pipes ASTM/ASME A53 /A106

API 5L
Gr B

Gr B to Gr X 70
Low Temperature CS Pipes ASTM A333 Gr 3 and Gr 6
Stainless Steel & Special Stainless Steel ASTM/ASME A312


ASTM/ASME A790

ASTM/ASME A790
TP 304/304L, 316/316L, 310, 317, 321, 347, 410, 904, H Grades

UNS S31803 / S32205 – Duplex 2205

UNS S32750 / S32760 - Super Duplex 2507
Alloy Steel ASTM/ASME A335 Gr. P5 / P9 / P11 / P 22 / P91 & P92
Nickel Alloy 200/201 B161 UNS N02200/N02201
Nickel Alloy 400 B165 UNS N04400 - Monel® 400
Nickel Alloy 600 B167 UNS N06600 - Inconel® 600
Nickel Alloy 625 B705 UNS N06625 - Inconel® 625
Nickel Alloy 800H/800HT B407 UNS N08810/N08811 - Incoloy® 800H/HT
Nickel Alloy 825 B423 UNS N08825 - Incoloy® 825
Nickel Alloy 276 B622 UNS N10276 - Hastelloy® C-276
Titanium Alloy B861 Gr 1 / 2 / 5 / 7

Welded Pipes

Type Specification Grades
CS Pipes API 5L Gr B to Gr X80
Low Temperature CS Pipes ASTM A671 EFW LSAW for atmospheric & Low Temp


ASTM A672 EFW LSAW for High Pressure service at moderate temperature
CC60 / CC65 / CC70 CLASS 12, 22, 32


B60 / B65 / B70 / C60 / C65 / C70 CLASS 12, 22, 32
Stainless Steel & Special Stainless Steel ASTM A358


A928
TP 304/304L, 316/316L, 310, 317, 321, 347, 410, 904, H

UNS S31803 – Duplex 2205 UNS S32750 / S32760 - Super Duplex 2507
Alloy Steel (EFW, LSAW, HSAW) ASTM A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Welded Pipes Class 12, 22, 32
Nickel Alloy 200/201 B725 UNS N02200/N02201
Nickel Alloy 400 B725 UNS N04400 - Monel® 400
Nickel Alloy 600 B517 UNS N06600 - Inconel® 600
Nickel Alloy 625 B705 UNS N06625 - Inconel® 625
Nickel Alloy 800H/800HT B514 UNS N08810/N08811 - Incoloy® 800H/HT
Nickel Alloy 825 B705 UNS N08825 - Incoloy® 825
Nickel Alloy 276 B619 UNS N10276 - Hastelloy® C-276
Titanium Alloy B862 Gr 1 / 2 / 5 / 7

Butt weld Fittings

icon for butt weld fittings in white

TROUVAY & CAUVIN supplies Butt weld fittings in all grades of Carbon Steel, Stainless Steel, and Alloy Steel, according to EN, ASTM and API standards in seamless or welded construction.

The various types of Butt weld Fittings supplied are

  • Equal Tees
  • reducing Tees
  • Concentric and Eccentric Reducers
  • Elbows 90D (short and long radius)
  • Elbows 45D (short and long radius)
  • Bends in any radius
Type Specification Grades
Carbon steel ASTM A234 WPB and WPHY42 to 80
Low Temperature ASTM A420 WP3 and WP6
Stainless Steel & Special Stainless Steel ASTM A403

ASTM A815
WP 304/304L, WP316/316L, WP310, 317, 321, 347, 410, 904, H

UNS S31803 – Duplex 2205 UNS S32750 / S32760 - Super Duplex 2507 A928
Alloy Steel ASTM A234 WP5 / WP9 / WP11 / WP22 / WP91
Nickel Alloy 200/201 B366 UNS N02200/N02201
Nickel Alloy 400 B366 UNS N04400 - Monel® 400
Nickel Alloy 600 B366 UNS N06600 - Inconel® 600
Nickel Alloy 625 B366 UNS N06625 - Inconel® 625
Nickel Alloy 800H/800HT B366 UNS N08810/N08811 - Incoloy® 800H/HT
Nickel Alloy 825 B366 UNS N08825 - Incoloy® 825
Nickel Alloy 276 B366 UNS N10276 - Hastelloy® C-276
Titanium Alloy B862 Gr 1 / 2 / 5 / 7

Forged Pipe Fittings

icon for forged fittings

We supply forged fittings with socket weld or threaded ends, in all grades of Carbon Steel, Stainless Steel,  and Alloy steel, according to EN, ASTM and API standards.

Some of the most commonly supplied Forged Pipe Fittings are:

  • 90D elbow
  • 45D elbow
  • Equal tee
  • Reducing tee
  • Caps
  • Three-piece union
  • Crosses
  • Branches fittings
Type Specification Grades
Carbon steel ASTM A105 BS EN 545, ISO 2531, ISO 8329, ISO 9523
Low Temperature ASTM A350 LF2 and LF3
Stainless Steel & Special Stainless Steel ASTM A182 F304/304L, 316/316L, 310, 317, 321, 347, 410, 904, H
Alloy Steel ASTM A182 F5 / 9 / 11 / 22 / 91
Nickel Alloy 200/201 B564 UNS N02200/N02201
Nickel Alloy 400 B564 UNS N04400 - Monel® 400
Nickel Alloy 600 B564 UNS N06600 - Inconel® 600
Nickel Alloy 625 B564 UNS N06625 - Inconel® 625
Nickel Alloy 800H/800HT B564 UNS N08810/N08811 - Incoloy® 800H/HT
Nickel Alloy 825 B564 UNS N08825 - Incoloy® 825
Nickel Alloy 276 B564 UNS N10276 - Hastelloy® C-276
Titanium Alloy B381 Gr 1 / 2 / 5 / 7

Flanges and Spectacle Blinds (Blind Flange)

flanges icon white color

TROUVAY & CAUVIN has a wide range of flanges and spectacle blinds in various materials and sizes in accordance with international standards to complement its range of pipes and fittings for various energy projects.

Some of the most common flanges we supply to the energy industry are:

  • Welding neck flange
  • Threaded flange
  • Slip-on flange
  • Socket weld flange
  • Blind flange
  • Lapped flange
Type Specification Grades
Carbon steel ASTM A105 BS EN 545, ISO 2531, ISO 8329, ISO 9523
Low Temperature ASTM A350 LF2 and LF3
Stainless Steel & Special Stainless Steel ASTM A182 F304/304L, 316/316L, 310, 317, 321, 347, 410, 904, H
Alloy Steel ASTM A182 F5 / 9 / 11 / 22 / 91
Nickel Alloy 200/201 B564 UNS N02200/N02201
Nickel Alloy 400 B564 UNS N04400 - Monel® 400
Nickel Alloy 600 B564 UNS N06600 - Inconel® 600
Nickel Alloy 625 B564 UNS N06625 - Inconel® 625
Nickel Alloy 800H/800HT B564 UNS N08810/N08811 - Incoloy® 800H/HT
Nickel Alloy 825 B564 UNS N08825 - Incoloy® 825
Nickel Alloy 276 B564 UNS N10276 - Hastelloy® C-276
Titanium Alloy B381 Gr 1 / 2 / 5 / 7

Nuts, Bolts and Gaskets

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TROUVAY & CAUVIN offers a wide range of bolting tools and solutions for the energy industry to improve equipment performance, reduce operating costs and ensure the safety of equipment and personnel.