Specification and steel type:
Specification:
φ6-88.9*1.24-12      cold-drawn seamless pipe

φ60.3-102*2.9-18     hot-rolled seamless pipe

φ168.3-273*4.5-25    cold-drawn
 
 Sort:
Low/mid/high-pressure boiler pipe, pipe for oil well,  bearing   tube, hydraulic pipe, structure pipe
 Standard:
GB/T8162-1999 structure seamless steel pipe

GB/T8163-1999 seamless steel pipe for transporting liquid
GB5310-1995 seamless steel pipe

GB9948-1988 seamless steel pipe for petroleum cracking

GB3087-1999 seamless steel pipe for low/mid-pressure boiler

GB6479-2000 seamless steel pipe for high-pressure fertilizer equipment

ASTM/ASME A53 Zinc-coated-free, hot-dipped and welded seamless steel pipe

ASTM/ASME A106 nominal seamless carbon steel pipe for high temperature

ASTM/ASME A192 seamless steel boiler pipe for high pressure
  ASTM/ASME A210 seamless mid-carbon steel pipe for  boiler and superheater

 ASTM/ASME A213 seamless ferrite and austenitic steel  pipe for boiler, superheater and heat exchanger

 ASTM/ASME A334 seamless and welded carbon and  alloy steel pipe for low temperature

 ASTM/ASME A335 seamless ferrite alloy steel pipe for  high temperature

 API Spec 5L criterion for tubing

 API Spec 5CT criterion for tubing and oil pipe

 EN 10297-1 criterion for tubing and oil pipe

 EN 10297-1 technology condition for delivering seamless  round pipe for machinery and general engineering

 EN 10216 technology condition for delivering seamless  non-alloy steel in room temperature