Steel pipes for pipelines

Our Core Business, Our History

Despite the proliferation of increasingly complicated and composite materials, steel pipe still holds the title to be the best product for conveying both liquid and gaseous fluids.

Gaglione MTE, also through its founders, has more than 40 years of experience in this sector and is therefore able to support you in all your projects, even the most complex ones.

Forming technologies	Size range
ERW/HFI	½’’ ÷ 24’’ (DN 15 ÷ DN 600)
HSAW	8’’ ÷ 160’’ (DN 200 ÷ DN 4000)
LSAW	16’’ ÷ 390’’ (DN 400 – DN 9750)
SS	½’’ ÷ 28’’ (DN 15 ÷ DN 700)

ERW/HFI – Pipes with longitudinally Electrical Resistance (Induction) Welding, without filling material.
LSAW – Pipes with Longitudinally Submerged Arc Welding, with filling material.
HSAW – Pipes with Helical/spiral Submerged Arc Welding, with filling material.
SS – Seamless pipes.

Application sector	Reference Norm
	(just some examples)
Oil&Gas	ISO 3183 (PSL1/PSL2) API 5L (PSL1/PSL2) EN 10208-1 EN 10208-2 ASTM A134 ASTM A135 ASTM A106 CSA Z245.1 IPS GOST
Water	EN 10224 EN 10217-1 EN 10217-2 EN 10217-3 DIN 1626, UNI 6363, NFA 49150 BS 534 DIN 2460 AWWA C-200 GOST

External coatings

Triple layer extruded polyethylene (3LPE) (UNI 9099/89, EN ISO 21809-1, DIN 30670, NFA 49710, etc.).
Triple layer extruded polypropylene (3LPP) (DIN 30678, EN ISO 21809-1, NFA 49711, etc.).
Fusion Bonded Epoxy (FBE) (AWWA C213).
Polyurethane (EN 10290).
Reinforced cement mortar overcoating (rockproof) (DWGW GW340).
Paintings
Inorganic zinc

Bitumen (UNI ISO 5256/87).

Inner lining

Anti-friction epoxy resins for gas pipelines (EN 10301, API RP5L2).
– Solvent free epoxy resins for drinking water, compliant with Italian Ministerial Decree. n. 174 of 04.06.2004 (AWWA C210, EN 10339, NFA 49709).
– Epoxy resins for jet fuel
– Hot applied bitumen for drinking water in compliance with Italian Ministerial Decree. n. 174 of 04.06.2004 (UNI ISO 5256/87).
– Bituminous primer (UNI ISO 5256/87).
– Thermoplastic resins (e.g. Rilsan).
– Cement mortar for drinking water in compliance with Italian Ministerial Decree n. 174 of 04.06.2004 (EN 10298, DIN 2614, NFA 49701, AWWA C205, etc.)
– Polyurethane (AWWA C22).
– Fusion Bonded Epoxy (FBE) (AWWA C213).

Type of ends

Bevelled for butt welding
Cylindrical socket
Spherical socket
For air chamber coupling (Poseidon / external air chamber)
For air chamber coupling (internal)
Slip joint
Flanged joint
Fixed and free flanges for off-shore installations

Steel grades (just some examples)

L235, L275, L355
A, A25, A25P, B, X42, X46, X52
X56, X60, X65, X70
L175, L175P, L210, L245, L290, L320, L360
L390, L415, L450, L485
S235JRH, S275J0H, J275J2H, S355J0H
S355J2H, S355K2H
P195TR1, P195TR2, P235TR1, P235TR2
P265TR1, P265TR2
P195GH, P235GH, P265GH, 16Mo3
P275NL1, P275NL2, P355N, P355NH,
P355NL1,
P355NL2, P460N, P460NH, P460NL1, P460NL2
241, 290, 359, 386, 414, 448, 483, 550

Regulations for external coverings

EN 21809-1
DIN 30670
UNI 9099
NFA 49710
DIN 30678
NFA 49711
EN 21809-2
UNI ISO 5256
EN 21809-5
EN 253
EN 10290

Regulations for external coverings

EN 10301
EN 10339
API RP5L2
NFA 49709
DIN 2614
EN 10298
NFA 49701
UNI ISO 4179
AWWA C 205
UNI ISO 5256
AWWA C 213

OFFSHORE APPLICATIONS

Concrete over weighting (gunite) for offshore pipelines (CWC – Concrete Weight Coating).

CWC is a special coating applied in the coating mill, used to provide negative thrust for off-shore pipelines, for river and road crossings (negative buoyancy at empty pipeline).

Pipe dimensions: from 6” (DN 150) to 64” (DN 1600).
Bar length: 9 ÷ 13.5 m.
CWC thickness: 35 ÷ 150 mm.
CWC density: 2,200 ÷ 3,400 Kg/m3.
Application method: impingement.

The cement weighting is made up of special reinforced concrete.
Concrete is made through a calculated mixture of cement, aggregates and iron ore powder.
he armor is made of electro-welded galvanized steel mesh.
WC is applied over the anti-corrosive coating (3LPE, 3LPP, FBE, etc.) and, apart adding weight, it integrates the mechanical protection functions of the anti-corrosion coating.
It is possible to foresee the integrated application of sacrificial anodes, directly in the mill, for passive or combined cathodic protection.