Short answer: Pipe and flange scrap in Abu Dhabi comes from fabrication yards and plant shutdowns in Musaffah and ICAD: pipe offcuts, old spools, flanges, fittings and valves. Clean carbon steel is bought in volume, while stainless and alloy are worth more once they are kept apart. Coatings, linings and process residues are what lower the grade.
Every fabrication shop in Musaffah ends the month with a rack of pipe drops nobody will use. Every shutdown at a process plant ends with a laydown area full of cut-out spools, blind flanges and valves that were swapped for new ones. None of it is waste in the real sense. It is steel, and most of it goes straight back to a mill.
This guide covers how we look at pipe and flange scrap: what it is, how to tell the metals apart, what coatings and residues do to the grade, and whether you need to cut anything before we collect.
What counts as pipe and flange scrap?
In short, anything that was part of a piping system or was made to become one. It splits into two sources that behave quite differently.
Offcuts and drops from fabrication
Fabrication yards cut pipe to length for spools and keep the rest. Over time the short pieces pile up: random lengths, bevelled ends, cut flanges, rejected welds, and bins of elbows and tees that were ordered in the wrong size. This material is usually clean and new, and the shop knows exactly what grade it bought, because the mill certificates came with it. That makes it easy to sort and easy to grade. If your shop also produces plate offcuts and machining swarf, our guide on factory offcuts and turnings covers those.
Spools, flanges and valves from shutdowns
Shutdown scrap is used. Spools come out with insulation still on, flanges still bolted together, gaskets in place and product left inside. Valves come out whole. The metal is usually good, but it needs more checking, because nobody on site is thinking about scrap grades while they are racing to finish the turnaround.
Carbon, stainless or alloy: how do you tell them apart?
This is the question that decides most of the value. Carbon steel is by far the largest volume and is sold as heavy melting steel. Stainless and alloy steels carry chromium, nickel or molybdenum, which the mill pays for, but only if they are not lost in a carbon steel pile.
| Material | How to check on site | Where you find it | Where it sits |
|---|---|---|---|
| Carbon steel (A106, A105, API 5L) | Strongly magnetic, rusts orange, stencil on the pipe | Process lines, firewater, structural pipe | Lower per kg, high volume |
| Galvanised carbon steel | Magnetic, dull grey zinc coat | Utility and firewater lines | Below clean carbon steel |
| Chrome-moly alloy (P11, P22, P91) | Magnetic, looks like carbon steel, check the marking | Steam and high temperature lines | Middle, if kept separate |
| Stainless 304 and 316 | Non or weakly magnetic, no rust | Water, food, chemical service | Higher, 316 above 304 |
| Duplex and super duplex | Weakly magnetic, marked UNS S31803 or S32750 | Seawater and offshore systems | Higher, needs marking or a test |
| Copper nickel | Non-magnetic, pinkish silver | Seawater cooling lines | Highest of the group, sold as non-ferrous |
The stencil on the pipe is your best friend. Most pipe and forged flanges carry their standard and grade along the length or on the flange rim. If the marking has gone, keep the piece separate and tell us; we can check it at the yard rather than guess.
A magnet is a quick first test, not the final answer. Some stainless becomes slightly magnetic after cold working, and chrome-moly looks exactly like carbon steel. The stainless rate follows nickel, which trades on the London Metal Exchange, so a few tonnes of misplaced 316 in a carbon pile is a real loss for you.
How do coatings, linings and residues affect the grade?
The steel may be fine. What is on it, or in it, is what moves the grade.
Coated, lined and insulated pipe
- External coatings such as paint and epoxy are accepted on carbon steel in most cases. Heavy wrap coatings, like the polyethylene or coal tar on buried lines, lower the grade.
- Internal linings such as cement, rubber or PTFE add weight that is not steel. Lined pipe is graded lower unless the lining is removed.
- Insulation and cladding should come off. Aluminium cladding is worth keeping on its own, and mineral wool goes to general waste. Very old lagging may contain asbestos, and that must be surveyed and removed by a licensed contractor before the pipe is released.
Pipe that carried product
Pipe from hydrocarbon, chemical or sour service must be drained, flushed and declared clean before it leaves site. Sludge, scale and residues are hazardous waste and go to licensed handlers under Abu Dhabi's waste rules, overseen by Tadweer, with national guidance from the Ministry of Climate Change and Environment. Pipe from oil and gas service may also need a NORM survey by the operator before release. We take the steel once it is clean and signed off. We do not take the residue.
Valves, gaskets and bolts
Steel body valves go with the steel, but many smaller valves have brass or bronze bodies or trims, and those are worth sorting out. Our page on brass and gunmetal from industrial sites explains how those are graded. Stud bolts are usually alloy steel and can go with the carbon. Spiral wound gaskets are mixed metal and filler, so drop them in a separate bin.
Do you need to cut pipe and flanges to size?
Usually not. Short drops, flanges and fittings go into a hydraulic skip, which we can leave at your yard and swap when full. Long pipe lengths and spools can be loaded whole with one of our two hiab trucks, as long as they fit on the truck and the route allows it.
Where spools are still in a pipe rack, or lengths are too long for the access, our crew can cut and lift on your site. The hazard assessment and working method are agreed before the truck arrives, under our ISO 45001 system, and hot work follows your site's own permit process.
Once the load reaches our yard at Musaffah M42 it is weighed and graded, and you receive the weight, grade and rate on paper. The price we quote is the price we pay, with nothing quietly deducted at the weighbridge. Sorted carbon steel goes back to UAE steel making, to mills such as Emirates Steel (EMSTEEL), Arabian Gulf Steel Industries and Jindal SAW Gulf. For larger clearances that include structural steel, our guide to steel structures and factory demolition scrap is the next read.
What to send us for a quote
- Photos of the pile, plus close ups of any stencil or flange marking.
- Which materials are present: carbon, stainless, alloy, galvanised, copper nickel.
- Whether the pipe is coated, lined or insulated, and what it carried.
- A rough quantity, or the length and size of the main runs.
- The site location in Musaffah, ICAD, KIZAD or elsewhere in Abu Dhabi, and the truck access.
Our office is open Monday to Friday, 7 am to 4 pm. Call or WhatsApp +971 55 229 2646, use the landline on +971 2 622 4258, or send the details through the form on our contact page.
Common questions
Do you buy stainless steel pipe and flanges separately from carbon steel?
Yes, and you should keep them apart. Stainless carries nickel and chromium, so it is graded well above carbon steel. Mixed into a carbon pile, it is weighed as carbon steel.
Can you take pipe that still has insulation or lining on it?
Insulation and cladding should be removed first, and old lagging that may contain asbestos must be surveyed and cleared by a licensed contractor. Lined pipe can be taken, but it is graded lower because the lining is not steel.
Do you accept pipe that carried oil or chemicals?
Only once it has been drained, flushed and declared clean by the site. Residues and sludge are hazardous waste and go to licensed handlers under Abu Dhabi rules overseen by Tadweer. Pipe from oil and gas service may also need a NORM survey by the operator.
Do I have to cut the pipe into short lengths?
Usually not. Long lengths can go on one of our hiab trucks and short pieces into a hydraulic skip. Where spools are still in a rack or access is tight, our crew can cut on site under an agreed method and your hot work permit.
How do I know if a pipe is chrome-moly or plain carbon steel?
They look the same and both are magnetic, so check the stencil or flange marking for grades such as P11, P22 or P91. If the marking has gone, keep the pieces separate and we will check them at the yard.
