Boto mainly trades in all kinds of Seamless / Welded Steel Pipes and Tubes such as OCTG, Line Pipes, as well as many kinds of Specialty Tubes such as seamless steel pipe, casingpipe, ERW steel pipe, SSAW steel pipe, Pipe fitting, carbon steel pipe, welded steel pipe, spiral steel pipe, line pipe, tubing pipe, Galvanized steel pipe, isaw steel pipe...Under world standard of ASTM / ASME, API, DIN, JIS.

China national standard seamless steel pipes, such as:
Seamless steel pipe use in high boiler: GB5310-1995
Low/medium boiler seamless steel pipe: GB3087-1999
Fluid seamless steel pipe: GB/T8163-1999
Structure seamless steel pipe: GB/T8162-1999
These pipes are carbon seamless steel pipes mainly, also involves some alloy seamless steel pipes.
The specification mainly as follows: OD: From 30mm to 325mm
Wall thickness: From 3mm to 25mm