ServeOilServeOil
§ Portfolio

Seven categories.
Every spec you specify.

From wellhead trees to refinery process piping, we source and stock the metal that makes projects move. Everything is traceable, certified and dispatched to schedule.

Line Pipes
§ 01

Line Pipes

Sour-service ready. Field-proven.

Standards
  • API 5L PSL1 & PSL2
  • ASTM A106 Gr. B / C
  • ASTM A333 Gr. 6 low temp
  • ASTM A312 TP304/L, TP316/L, TP321
  • ASTM A790 duplex & super duplex UNS S31803, S32750
  • EN 10216 / EN 10217
Grades
  • Carbon: X42, X52, X60, X65, X70
  • Alloy: P5, P9, P11, P22, P91
  • Stainless: 304/L, 316/L, 321, 347
  • Duplex 2205 · Super duplex 2507
  • Inconel 625 / 825, Hastelloy C276
  • Low-temp: A333 Gr. 3 / 6 / 7
  • 6-Moly UNS S31254 (254 SMO)
  • Titanium Gr. 2 / 7 · Copper-nickel 90/10, 70/30
Size range
  • OD: 1/2" – 48"
  • Wall: SCH 10 through XXS
  • Length: SRL, DRL, cut-to-length
  • Ends: BE, PE, threaded, flanged
Manufacture
  • Seamless — hot-rolled & cold-drawn
  • LSAW & SSAW welded
  • ERW / HFI welded
  • 3LPE, FBE, coal-tar epoxy coating
  • Cement / concrete weight coating
Testing & docs
  • EN 10204 3.1 / 3.2 mill certificates
  • Hydrostatic & non-destructive testing
  • PMI, hardness (HV / HRC) & impact (Charpy)
  • NACE MR0175 / ISO 15156 sour service
  • Third-party inspection: SGS, BV, TÜV, DNV
Valves
§ 02

Valves

Full flow control, API 6A / 6D.

Types
  • Gate — wedge, slab, expanding
  • Globe — T, Y & angle pattern
  • Check — swing, piston, dual plate, tilting disc
  • Ball — floating, trunnion, top-entry
  • Butterfly — concentric, double & triple offset
  • Plug — lubricated, sleeved, lined
  • Control & choke valves
  • Safety relief (PSV) & pressure regulators
  • Diaphragm & pinch valves
  • Knife-gate & through-conduit gate
  • Cryogenic extended-bonnet valves
Standards
  • API 6A / 6D / 6DSS subsea
  • API 594, 598, 600, 602, 603, 608, 609
  • ASME B16.34, B16.10, B16.5
  • ISO 15848 fugitive emissions
  • ISO 5208 seat leakage
  • SIL 3 certified per IEC 61508
Ratings
  • ANSI Class 150 – 2500
  • API 2000 – 20 000 psi
  • Size range: 1/2" – 60"
  • Temperature: −196 °C to +550 °C
Materials
  • Carbon: WCB, WCC, LCC
  • Stainless: CF8M, CF3M, CN7M
  • Duplex: CD4MCu, 4A · Super duplex 5A
  • Inconel 625, Monel 400, Hastelloy
  • Trim: 13 Cr, Stellite 6, tungsten carbide
Actuation
  • Electric — Rotork, Auma, Limitorque
  • Pneumatic — scotch-yoke & rack-and-pinion
  • Hydraulic & gas-over-oil
  • Fail-safe, ESD & partial-stroke test
  • Manual gear operator & handwheel
Flanges
§ 03

Flanges

Every face, every rating.

Types
  • Weld neck (WN)
  • Slip-on (SO)
  • Blind (BL)
  • Socket weld (SW)
  • Threaded (SCRD)
  • Lap joint (LJ) & stub end
  • Orifice flange (with jack screws & tap holes)
  • Spectacle blind / spacer & blind
  • Long weld neck (LWN)
  • Reducing flange
  • Anchor / weldoflange
  • Nipoflange & elboflange
  • Compact / paddle blind
Standards
  • ASME B16.5 (1/2" – 24")
  • ASME B16.47 Series A (MSS-SP-44) & B (API 605)
  • API 6A wellhead / API 17D subsea
  • BS 1560, BS 4504, EN 1092-1
  • DIN, JIS B2220, GOST
Ratings & faces
  • Class 150, 300, 600, 900, 1500, 2500
  • PN 6 – PN 420
  • Face: RF, FF, RTJ, TG, LMF, LFF
  • API 6A 2 000 – 20 000 psi
Materials
  • Carbon: A105, A105N, A350 LF2 / LF3
  • Alloy: F5, F9, F11, F22, F91
  • Stainless: F304/L, F316/L, F321, F347
  • Duplex F51 · Super duplex F53, F55
  • Nickel: Inconel 625/825, Monel, Hastelloy
Manufacture & docs
  • Forged per ASTM A105 / A182 / A350
  • EN 10204 3.1 / 3.2 mill certification
  • PMI, hardness & Charpy impact testing
  • NACE MR0175 for sour service
  • Marking: standard, size, rating, heat, PO
Pipe Fittings
§ 04

Pipe Fittings

Elbows, tees, reducers, couplings.

Types
  • Elbows — 45°, 90°, 180° (LR & SR)
  • Tees — equal & reducing
  • Reducers — concentric & eccentric
  • Caps, crosses, laterals
  • Stub ends (Type A, B, C)
  • Couplings — full, half, reducing
  • Nipples — hex, swage, barrel
  • Bushings, plugs, unions
  • Weldolets, sockolets, threadolets
  • Elbolets, nipolets, latrolets
  • Return bends & long-radius crossovers
Standards
  • ASME B16.9 butt-weld
  • ASME B16.11 socket-weld & threaded
  • ASME B16.28 short-radius elbows
  • MSS-SP-43 / SP-75 / SP-95
  • EN 10253-1/2/3/4
Size range
  • Butt-weld: 1/2" – 48"
  • Socket weld & threaded: 1/8" – 4"
  • SCH 10, 20, 40, 80, 160, XS, XXS
  • 3000, 6000, 9000 lb class (SW/THD)
Materials
  • Carbon: A234 WPB, WPC
  • Low temp: A420 WPL6, WPL3
  • Alloy: A234 WP5, WP9, WP11, WP22, WP91
  • Stainless: A403 WP304/L, WP316/L, WP321
  • Duplex A815 UNS S31803 / S32750
  • Nickel: Inconel 625/825, Monel 400
Testing
  • Radiography & UT on welded fittings
  • PMI & hardness testing
  • NACE MR0175 for sour service
  • Matched heat with parent line pipe
Strainers
§ 05

Strainers

Y-type, T-type, basket & duplex.

Configurations
  • Y-type simplex
  • T-type / bucket
  • Basket — simplex & duplex
  • Temporary / conical (start-up)
  • Fabricated pipeline strainers
  • Twin & tee-strainer assemblies
  • Automatic self-cleaning strainers
  • Magnetic separators & scale traps
  • Suction diffusers for pump inlets
Standards
  • ASME B16.34 body design
  • API 598 pressure testing
  • ASME Section VIII Div. 1 (fabricated)
  • MSS-SP-131 strainer standard
Ratings & connections
  • ANSI Class 150 – 900 (up to 1500 on request)
  • Size range: 1/2" – 48"
  • Ends: flanged (RF / RTJ), BW, SW, threaded
  • Temperature: −29 °C to +425 °C
Elements
  • Perforated plate: 0.8 – 6.4 mm holes
  • Wire mesh: 20 – 400 mesh
  • Multi-layer sintered mesh
  • Magnetic inserts (optional)
  • Reinforcement basket for high dP
Materials
  • Carbon: WCB, LCC
  • Stainless: CF8, CF8M, CF3M
  • Duplex 4A · Super duplex 5A
  • Bronze & Monel for seawater
  • Lined: rubber, PTFE, halar
Stud Bolts & Gaskets
§ 06

Stud Bolts & Gaskets

The seal is the system.

Stud bolts & nuts
  • ASTM A193 B7, B7M, B8, B8M, B16
  • ASTM A320 L7, L7M, L43 (low temp)
  • ASTM A194 2H, 2HM, 4, 7, 7M, 8, 8M nuts
  • Size: M6 – M100 · 1/4" – 4"
  • Coating: hot-dip galvanised, PTFE (Xylan), zinc-nickel, cadmium
  • Full-thread studs, tap-end studs, machine bolts
  • Inconel 625 / 718, Monel K500 studs
  • Duplex UNS S32750 / S32760 fasteners
  • Hex, heavy hex & 12-point flange nuts
Spiral wound gaskets
  • ASME B16.20 / API 601
  • Windings: 304, 316L, 321, Inconel 625, Monel
  • Fillers: flexible graphite, PTFE, mica, ceramic
  • With inner ring, outer ring or both (CG, CGI)
  • Class 150 – 2500
Metal jacketed & solid metal
  • Double-jacketed with soft filler
  • Corrugated metal (plain & graphite-faced)
  • Kammprofile (grooved core, soft facing)
  • Solid metal — soft iron, carbon steel, SS
Ring joint gaskets (RTJ)
  • ASME B16.20, API 6A
  • Type R — oval & octagonal
  • Type RX — pressure-energised
  • Type BX — high pressure API 6A
  • Materials: soft iron, 304, 316, F5, Inconel 625
Non-metallic gaskets
  • Compressed non-asbestos fibre (CNAF)
  • PTFE — virgin, filled, expanded, envelope
  • Graphite sheet — with tanged, foil or mesh insert
  • Rubber — NBR, EPDM, Viton, silicone
  • Full-face & inside-bolt-circle
Instrumentation
§ 07

Instrumentation

Field to control room.

Tubing & fittings
  • Seamless tube per ASTM A213/A269/A312
  • Sizes: 1/8" – 2" OD, metric 3 – 50 mm
  • Materials: 316/L, 6-Moly, Alloy 400, 625, 825
  • Twin-ferrule compression fittings
  • Tube unions, tees, elbows, adapters
  • Tube supports, clamps, cable trays
  • Hastelloy C-276 & titanium tubing
  • Medium & high pressure cone-and-thread
  • Weld-fitting & autoclave connections
Valves & manifolds
  • Needle, ball & plug valves
  • 2, 3 & 5-valve manifolds
  • Double-block-and-bleed (DBB)
  • Monoflange & modular gauge valves
  • Bleed rings & check valves
Pressure instruments
  • Pressure gauges — bourdon, diaphragm, capsule
  • Differential pressure transmitters
  • Pressure switches & transducers
  • Diaphragm seals & chemical seals
  • Test gauges — 0.25 % accuracy
Temperature & flow
  • RTD (PT100) & thermocouples (K, J, T)
  • Thermowells — flanged, threaded, welded
  • Bimetallic & gas-filled thermometers
  • Orifice plates, flow nozzles, venturis
  • Coriolis, vortex & magnetic flowmeters
  • Level: radar, ultrasonic, magnetostrictive
Certification
  • ATEX / IECEx Zone 1 & 2
  • SIL 2 / SIL 3 certified
  • NACE MR0175 sour service
  • IP66 / IP67 enclosure ratings
  • PED 2014/68/EU, CRN registration
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