Pipe spool

Pipe spool

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Top 10 reliable prefabricated flanged spool manufacturers in UAE, get free quote now

Pipe spool size

Production method Material Size range & pipe spool dimensions Schedule / Wall Thickness
Minimum thickness (mm)
Schedule 10S
Maximum thickness (mm)
Schedule XXS
Seamless Fabricated Carbon steel 0.5 – 30 Inch 3 mm 85 mm
Seamless Fabricated Alloy steel 0.5 – 30 Inch 3 mm 85 mm
Seamless Fabricated Stainless steel 0.5 – 24 Inch 3 mm 70 mm
Welded Fabricated Carbon steel 0.5 – 96 Inch 8 mm 85 mm
Welded Fabricated Alloy steel 0.5 – 48 Inch 8 mm 85 mm
Welded Fabricated Stainless steel 0.5 – 74 Inch 6 mm 70 mm

Fabricated pipe spools in all metal & alloys with coating/ mechanical testing in middle east

Specification of pipe spool

Pipe spool dimensions Flanged pipe spool standard Certification
  • 6 meter – ½” (DN15) – 6”NB (DN150)
  • 3 meter – 8” (DN200) – 14”NB (DN350)
  • ASME B16.5 (Class 150-2500#)
  • DIN/ ANSI/ JIS/ AWWA/ API / PN standard
  • EN 10204 3.1
  • MTC 3.2 EN 10204
Common welding methods followed by pipe spool manufacturers Welding standard Welder test
  • Manual
  • Semi-automatic
  • Robotic (FCAW, MIG/ MAG, GTAW, GMAW, SAW, SMAW, 1G TIG, 1G MIG)
  • Welders as per API1104 (Uphill/Downhill)
  • ASME Section IX
  • AWS ATF
  • ISO 17025
Hardness Spool fabrication services Pipe spool identification
  • NACE
  • API standards
  • Pickling and passivation
  • Grit blasting (manual and semiautomatic)
  • High Speed Auto Cutting
  • Painting (manual and semiautomatic)
  • Surface treatment
  • Auto Beveling
  • Auto Welding with up to Pipe Size of 60”

Contact above listed pipe spool manufacturers for your specific requirements

  • Labeled
  • Pan marking
  • dye stamping,
  • Tagging–pipe heat numbers (before cutting pipe, labeled to the cut pieces)
  • Rejected Spools – can be identified with yellow and black color tags (sent for repair job, and to pass NDT test)
Pipe spool hs code Documentation Testing
  • 73269099
  • QC/ QA Documentation as-built drawings
  • Bolting Inspection according to RCSC
  • MTC
  • Raw Material Tests
  • NDT/ non-destructive tests
  • Chemical analysis
  • Hardness
  • Impact test
  • Hydro test
  • Visual control
  • Radiographic
  • Ultrasonic
  • Mgnetic particle
  • Dye penetrant examinations
  • X-ray dimensional control
Code & standard End-Prep Marking Details
  • ASME B31.1
  • ASME B31.3
  • ASME B 31.4
  • ASME B 31.8
  • PED 97/23/EC
  • End preparation (beveling) for successful weld
  • 37.5 degrees Beveled angle for welding
  • Roll
  • Cut-groove
  • Pipeline No.
  • Component Heat No.
  • Joint No.
  • Fit-up inspection signature
  • Welder No.
  • Visual inspection signature
  • Welding date with metal paint marker ( marked near the joint)
  • Spool Number on the pipe
  • Aluminum tag is tied to the spool

Material wise cutting and marking process

 

Heat-treatments Storage & Packaging Protection tips Industries
  • Preheating
  • PWHT
  • Completed pipe spools with raised faces flange are fitted with plywood blinds
  • Spool ends shall be kept with plastic caps
  • Oil & Gas
  • Chemical industry
  • Power Generation
  • Aviation Refueling
  • Pipeline
  • Wastewater/ Water Treatment

Check process of titanium flanged pipe spool used for chlorine plant, refineries, oil and gas in UAE

Pipe spool length

Minimum pipe spool length 70mm -100mm as per requirement
Maximum pipe spool length 2.5m x 2.5m x 12m
Standard pipe spool length 12m

Compatible pipe fittings and flanges for pipe spool fabrication

Pipe spool is a combination of fittings, flange & pipes, find list of compatible pipe, buttweld fittings and flanges to produce a pipe spool, not sure about material? Contact directly to pipe spool manufacturers for material selection for your project

Material Pipe Compatible pipe fittings Compatible flanges
Carbon steel pipe spool
Stainless steel pipe spool
  • A312 TP304/ 304L/ 316/ 316L
  • ASTM A403 WP304/ 304L/ 316/ 316L
  • ASTM A182 F304/ 304L/ 316/ 316L
Titanium pipe spool
  • ASTM B861
  • ASTM B363
  • ASTM B381
  • Nickel pipe spool
  • Hastelloy pipe spool
  • Inconel pipe spool
  • Monel pipe spool
  • Alloy 20 pipe spool
  • ASTM B775
  • ASTM B622
  • ASTM B444/ B705
  • ASTM B165
  • ASTM B729
  • ASTM B366
  • ASTM B564
Duplex / Super duplex/ SMO 254 pipe spool
  • ASTM A789
  • ASTM A815
  • ASTM A182
Copper nickel/ Cupro Nickel pipe spool
  • ASTM B467
  • ASTM B171
  • ASTM B151

Pipe spool fabrication process

To fabricate a spool below are the methods used by pipe spool manufacturers

Method 1 Roll welding/ Roll fitting and welding
Method 2 Position welding/ Permanent position fitting and welding
No room for mistakes so here we enlisted only specialized and most experienced pipe spool fabrication companies, view list of required testing

Material wise suitable welding methods

Can be weld Not able to weld
FCAW Carbon steels, cast iron, nickel based alloys Auminum
Stick welding Carbon steels, nickel based alloys, Chrome, ss, even Aluminum but not the best
Best to weld thicker metals
Thin sheet metals
Tig welding Best for steel & aluminium
for precise & small welds

Pipe spool types

Pipe spools with multiple orifice plates

Pipe spools with multiple orifice plates

Longer length spools

Longer length spools

18 meter length pipe spool

18 meter length pipe spool

180 degree pipe spool

180 degree pipe spool

Tantalum lined pipe spool

Tantalum lined pipe spool

Custom pipe spool

Custom pipe spool

Titanium pipe spools

Titanium pipe spools

Inconel prefabricated pipe spools

Inconel prefabricated pipe spools

Monel fabricated pipe spools

Monel fabricated pipe spools

Hastelloy flanged pipe spool

Hastelloy flanged pipe spool

Alloy 20 fabricated spools

Alloy 20 fabricated spools

Copper Nickel spool piece pipe

Copper Nickel spool piece pipe

Alloy 20 flanged spool piece

Alloy 20 flanged spool piece

Nickel alloy pipeline spool

Nickel alloy pipeline spool

Zirconium spool fabrication

Zirconium spool fabrication

Inconel 625 pipe spool

Inconel 625 pipe spool

List of suitable pipe spool material for different fluid & gases

Sodium Hypochlorite Fluid 304 or 316 stainless steel
Ammonia 300 Series stainless steels
Chlorine 304 and 304L -for 2 ppm chlorine
316 and 316L – up to 4 ppm chlorine
Propane stainless steel
Carbon dioxide 300 series stainless steels and duplex steels such as UNS S31803
Acetylene Stainless steel and carbon steel
Hydrogen Austenitic stainless steel grades
Helium liquid 304 and 316 cryogenic steels
Neon Stainless Steel, Brass, Carbon Steel, Zinc, Monel, Copper, Aluminum
Nitrogen liquid 304 and 316 cryogenic steels
Concentrated oxygen Inconel 600, Monel 400, nickel and brass

Pipe spool inspection & weld quality testing methods

List of methods for testing the quality of the weld performed by pipe spool manufacturers

Non Destructive Testing or “NDT”
  • Magnetic Particle (MT)
  • Liquid Penetrant (PT)
  • Ultrasonic (UT)
  • Visual (VT)
  • Radiographic Inspection (RT)*
Destructive Testing or “DT”
Hydro testing
Ultrasonic testing for joint
DPT For welded joint
X ray testing for butt weld joint
Positive Material Identification (PMI)

Material list for prefabricated pipe spools

Titanium pipe spool
  • Titanium Grade 1/ grade 2
Zirconium spool
  • Zirconium 702 & 705
Tantalum pipe spool
  • R05252
  • R05255
  • R05240
Niobium spool
  • ASTM B393 R04200
  • R04210
  • R04251
  • R04261
  • R04220
Nickel pipe spool
  • Nickel alloy 200
  • Ni 201
Inconel spool
  • Alloy 600
  • Alloy 601
  • Alloy 625
Incoloy pipe spool
  • Alloy 800/ 800H/ 800HT
  • Alloy 825
Monel spool
  • Alloy 400
  • Alloy K500
Hastelloy pipe spool
  • Hastelloy C276
  • Hastelloy C22
  • Hastelloy B2
Copper Nickel spool
  • Copper Nickel 90/10
  • Copper Nickel 70/30
Alloy 20 pipe spool
  • UNS N08020

Pipe spool welding

Pipe spool welding certification processes

  • TIG welding – GTAW (Gas Tungsten Arc Welding)
  • Stick welding – SMAW (Shielded Metal Arc Welding)
  • MIG welding – GMAW (Gas Metal Arc Welding)
  • FCAW – Wire Wheel welding/ Flux Core Arc Welding

Pipe spool welding certification positions

Pipe Welding Certification Position
1G Welding horizontal position
2G Welding vertical position
5G Welding horizontal position
6G Welding standing on a 45 degree angle
R restricted position

Joints types of fabricated spools

  • F is for a fillet weld.
  • G is for a groove weld.

Pipe spool fabrication tolerances

Wrought bends Max 8% pipe OD
Flange face to flange face or pipe to flange face ±1.5mm
Flange faces 0.15mm / cm (width of joint face)

Minimum pipe spool piece between welds

Code & standard for Pup/ short piece of pipe or pipe spool piece between welds

  • Choose the length of pipe spool minimum of 2 inch or 4 times of wall thickness to keep butt weld little far to avoid overlapping weld
  • As per Australian Standard AS 4458 – distance between the edge of 2 butt welds should be minimum 30 mm or 4 times pipe wall thickness

Pipe spool flange

Pipe spool with blind flange

Pipe spool with blind flange

Pipe spool with threaded flange

Pipe spool with threaded flange

Pipe spool with socket weld flange

Pipe spool with socket weld flange

Pipe spool with weld neck flange

Pipe spool with weld neck flange

Pipe spool with slip on flange

Pipe spool with slip on flange

Pipe spool with puddle flange

Pipe spool with puddle flange

Flanged pipe spool pressure test

Pipeline spool in Nickel, Duplex steel, Inconel, Hastelloy & Zirconium material, spool flange from bend test to 100 % x-ray radio graphic testing

Hydrostatic testing is required to test pressure and can be provided by all listed pipe spool manufacturers

Pipe spool hydrostatic testing

Key features

  • Detect leakage issues
  • Way to test strength