Pipe and tube
Carbon steel seamless
nominal bore pipe
ASTM/ASME SA106 Grade B seamless pipe to ASME B36.10, in Standard and Extra Strong wall from ½" to 12", black lacquered and in stock.
SA106 Grade B seamless pipe for pressure service
Midsteel supplies quality carbon steel seamless nominal bore pipe for a wide range of industrial and commercial applications. Made to ASTM/ASME SA106 Grade B, the most widely specified carbon steel for high-temperature and pressure pipework, and dimensioned to ASME B36.10, our pipe suits demanding pressure and structural uses.
Stock is held in Standard weight and Extra Strong schedules from ½" to 12" nominal bore, with a black lacquered finish for protection in storage. Pair it with our SA234 WPB butt weld fittings and SA105N flanges for a matched carbon steel system.
Specification
Carbon steel pipe specification
Other grades, pressure ratings and wall thicknesses are available on request. Material test certificates to EN 10204 3.1 are supplied as standard.
In stock
In stock
- ½" to 12" NB seamless pipe
- Standard weight wall
- Extra Strong (XS) wall
- Black lacquered finish
- Galvanised pipe also available
Where SA106 Grade B is used
SA106 Grade B is the workhorse carbon steel pipe for process plant, steam, hydrocarbon, compressed air and utility services, rated for high-temperature pressure duty. Because it is seamless, it has no longitudinal weld to inspect, which is why many specifications call for it over welded alternatives.
For systems that will be exposed to the weather or used for water and fire protection, ask about our hot dip galvanised seamless pipe.
Complete the line
Match your pipe with carbon steel fittings and flanges from the same stockholder.
- SA234 WPB butt weld fittings
- SA105N forged fittings and flanges
- Carbon steel stub ends
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ISO 9001:2015Lloyd’s (LRQA) approved quality system
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EN 10204 3.1 certsFull material traceability as standard
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Same-day serviceAvailable on urgent stock and machined specials
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In-house machiningSpecials and hard-to-find sizes made to order
FAQs
Carbon steel pipe questions
Can't find the answer? Our sales team can advise on grades, standards and lead times.
Need a price or a delivery date?
Send us your enquiry, schedule or drawing and our sales team will come back to you with stock, price and lead time.


