p265tr1 seamless boiler pipe. EN 10216-1 Grade P265TR1 Alloy Steel Seamless Tubes EN 10216-1 Grade P265TR1 Specification covers Non-alloy steel tubes, Specified room temp properties. Pipe will be supplied in 5-7 metre random lengths with butt-weld ends and varnished to avoid oxidation of the steel when in storage. All pipes are fully certified and traceable with heat numbers hard stamped Boiler Tube SA210 A1, Superheater Tube A213 T22-Vessel Boiler Tube SA210 A1 is the standard covers seamless medium-carbon steel boiler and superheater tubes. Seamless medium carbon steel pipe for boiler tube and boiler flue pipe, including a minimum wall thickness of the security side, the dome and the support tube and superheater tubes.