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Piping

Pipe colour coding

In short

Background colour by fluid family, NF X 08-100 and BS 1710.

Marking on the pipe

Band in the fluid colour (length ≥ 6 × Ø), optional state colour, flow-direction arrow.

NF X 08-100 (France)

  • A 466Water: green
  • A 690Steam: light aluminium grey
  • A 571Air: light blue
  • A 340Other gases: yellow ochre
  • A 020Oils, liquid fuels: light brown
  • A 790Acids and alkalis: pale violet
  • A 603Other liquids: black
  • A 801Fire fighting: bright orange red

BS 1710 (United Kingdom)

  • 12 D 45Water: green
  • 10 A 03Steam: silver grey
  • 20 E 51Air: light blue
  • 08 C 35Gases: yellow ochre
  • 06 C 39Oils: brown
  • 22 C 37Acids and alkalis: violet
  • 00 E 53Other liquids: black
  • 06 E 51Electrical, ventilation ducts: orange

The fluid name is written in full on the marker. Mark at valves, branches, wall crossings and at each visible change of direction.

Sources

  • Aluplex : NF X 08-100, couleurs d’identification des fluides : Familles et références AFNOR NF X 08-002 (link)
  • OZC Signalétique : marquage NF X 08-100 : Couleurs par famille, sens d’écoulement (link)
  • Promain : couleurs BS 1710 : Couleurs de base, codes BS 4800 (link)

Updated · Publisher: The Level Code

Tools · Piping

Isometric planLine entered item by item: dimensioned isometric, 3D, spool cut list, bill of materials, welds, PDF.Pipe offsetOffset a line with two elbows: cut length, angle from the spool or the run, elbow cut layout.Rolling offsetOffset both up and sideways with two elbows: true offset, cut length, elbow roll.Parallel pipe offsetSeveral parallel lines through the same offset: start shift of each line, cut length.Branch on pipeSaddle cut for a square, angled or offset branch: generator lengths and full-size wrap-around template.Branch on elbowSaddle cut for a branch at the middle of an elbow (outer side or flank): generators and full-size template.Mitre bendSegmented elbow: cut angle, outside / centreline / inside length of each piece, cutting template.Cut-down elbowCut a 90° or 45° elbow down to any angle: lengths at the back, side and belly, marks and cutting template.Tee + elbowTake-out of an elbow fitted on an equal tee, direct or with a spool; spool to cut for a given dimension.Swept teeBranch made from an elbow laid on the header: elbow cut, height-gauge marks, full-size header hole.ReducerConcentric or eccentric reducer: angle, taper and flat pattern to mark out on plate.Pipe bendingCut length, bend marks from the end, gain and approximate wall thinning.Standard fittingsTake-out of buttweld elbows, tees, reducers and caps (ASME B16.9, EN 10253-2).Flanges and boltingDrilling, bolts, studs and wrench size of an EN 1092-1 (PN) or ASME B16.5 (class) flange.Flange gasketDimensions of EN 1514-1 and ASME B16.21 flat gaskets and ASME B16.20 spiral wound gaskets (rings included).Jacketed pipePipe in a pipe: gap, spacers (height, count, positions), volumes, weight and gap in the elbows.Line weightWeight of a pipe run per metre and in total: pipe, water, insulation.Hydrostatic testIndicative test pressure (PED / EN 13480-5 or ASME B31.3) and gauge range.