Seamless steel specification???
Size: O.D15mm-820mm   W.T 0.8mm-60mm   L 4m-12m
Executive Standard: GB/T8162-1999,GB/T8163-1999,GB/3087-1999, ASTM A106???STM A53???STM A335,API SPEC 5L???PI SPEC 5CT,DIN17175???IN17100 and We can also produce special specification according to customers???requirement.( Technology  agreement ).  
Material: 10#-45#???345B(16Mn) and alloy, Steel Grade: A, B X42-X70,K55,J55
Packing: spray painting, oiling, Anticorrosion & Insulation , Bevel or plain end, protect of pipe end and packaging.
Applications: Widely used in oil, Building structure and decoration, Machinery machining, Geological coal, Chemical industry, electric power, aviation, ship, etc.