Standard API | ASTM | BS | DIN | DNV | GB | ISO | JIS | KS | LR | NF | Others
NF
Standard Number
A49-111 (Steel Tubes Plain end Seamless Tubes of Commercial Quality for General Purposes at Medium Pressure )
A49-112 (Steel Tubes Plain end Seamless Hot Rolled Tubes with Special Delivery Conditions )
A49-115 (Steel Tubes Seamless Plain end Tubes for Pipe Lines and General Use Ferritic And Austenitic Stainless Steels )
A49-141 (Steel Tubes Seamless Plain end Tubes for Pipe Lines and General Use Ferritic and Austenitic Stainless Steels )
A49-142 (Steel Tubes Longitudinally Pressure Welded Plain Ended And Hot Finished Tubes)
A49-145 (Steel Tubes Hot Finished welded Tubes Suitable for Threading )
A49-146 (Steel Tubes Unthreaded Plain Ended Welded Tubes for Liquids )
A49-148 (STEEL TUBES PLAIN END LONGITUDINALLY WELDED TUBES FOR PIPE LINES AND GENERAL USE FERRITIC STAINLESS STEELS )
A49-150 (Steel Tubes Welded Tubes Intended to be Coated of Protected for use in Water Piping Systems )
A49-175 (Steel Tubes Plain end Longitudinally Welded Tubes for Pipe Lines and General use Austenitic Stainless Steel )
A49-207 (Steel Tubes Seamless or Longitudinally Welded Stainless Steel Tubes For Exchangers in Aircraft Construction )
A49-210 (Steel Tubes Seamless Cold Drawn Tubes for Fluid Piping)
A49-211 (Steel Tubes Seamless Plain end Unalloyed Steel Tubes for Fluid Piping at Elevated Temperatures )
A49-212 (Steel Tubes Seamless Unalloyed Steel Tubes for Use At Medium Temperatures )
A49-213 (Steel Tubes Seamless Unalloyed and Mo Crmo Alloy Steel Tubes for Use at High Temperatures )
A49-214 (Steel Tubes Seamless Austenitic Steel Tubes for use at High Temperatures )
A49-215 (Steel Tubes Seamless Tubes For Ferritic NonAlloy And Alloy Heat )
A49-217 (Steel Tubes Seamless Tubes for Heat )
A49-218 (Steel Pipes Seamless Pipes for Rurnaces Austenitic Stainless Steels)
A49-230 (Steel Tubes Plain end Seamless Tubes for Pressure Vessels and Piping Systems Used at Low Temperatures )
A49-240 (Steel Tubes Longitudinally Butt welding Plain End for Pressure Vessels and Pipe Systems Used at Low Temperatures )
A49-241 (Steel Tubes Longitudinally Pressure Welded Tubes D 168.3mmMax in not Alloyed and Low Alloyed at Medium Elevated Temperatures)
A49-242 (Steel Tubes Longitudinally Pressure Welded Tubes D 168.3mmMax in not Alloyed and Low Alloyed at Medium Elevated Temperatures)
A49-243 (Steel Tubes Longitudinally Pressure Welded Tubes D 168.3mm in not Alloyed and Ferritic Alloyed Steels Used at Elevated Temperatures)
A49-245 ( Steel Tubes Longitudinally Welded Tubes For Ferric Non Alloy and Alloy Steel Heat Exchangers )
A49-249 (Steel Tubes Longitudinally Welded Plain End Tubes for Food Industry Austenitic Staniness Steels )
A49-250 (Steel Tubes Welded Plain End Tubes of Commercial Quality with or Without Special Delivery ConditionsD168.3mmMax )
A49-253 (Steel Tubes Longitudinally Fusion Welded Non Alloy and Ferritic Alloy Steel Tubes for use at Elevated Temperatures )
A49-310 (Steel Tubes Seamless Precision Tubes for Mechanical Application)
A49-311 (Steel Tubes Seamless for Mechanical Application)
A49-312 (Steel Tubes Seamless Tubes for Mechanical Application Supplementary Series )
A49-317 (Steel Tubes Seamless Plain end Tubes for Engineering Use Austenitic Stainless Steel )
A49-321 (Steel Tubes Jacks for Hydraulic Transmissions Cold Roled)
A49-322 (Steel Tubes Jacks for Hydraulic Transmissions Cold Rolled or Cold Drawn Seamless Tubes Type Suitable for Grinding in )
A49-323 (Steel Tubes Jacks for Hydraulic Transmissions Clod Rolled or Cold Drawn Seamless Tubes Type Ready for Use )
A49-326 (Steel Tubes Jacks for Pneumatic Transmissions Clod Drawn )
A49-327 (Steel Tubes Jacks for Pneumatic Transmissions Cold Drawn Seamless Tubes Type Ready for )
A49-330 (Steel Tubes Seamless Cold Drawn Tubes for Hydraulic and Pneumatic Power Systems)
A49-341 (Steel Tubes Precision Welded Tubes for Mechanical Application)
A49-343 (Steel Tubes Longitudinally Welded Tube D 168.3mmMax for Engineering Use )
A49-400 (Longitudinally Electric Resistance Welded Unalloyed Steel Tubes D 17.2Min 406.4mmMax for the Transport of Pressurized Fluids)
A49-401 (Steel Tubes Longitudinally Fusion Welded Non Alloy and Micro Alloy Sttel Tubes for Fluid Transporting Pipes and Pressure Vessels)
A49-402 (Steel Tubes Spiral Fusion Welded Non Alloy and Micro Alloy Steel Tubes for Fluid Transporting Pipes and Pressure Vessels)
A49-501 (Steel Tubes Seamless or Welded Hot Finished Structural Hollow Sections)
A49-541 (Steel Tubes Cold Finished Welded Structural Hollow Sections)
A49-643 (Steel Tubes Round Square and Rectangular Steel Tubes for Ordinary Longitudinally Pressure Welded and Cold Formed From Flat Froducts)
A49-645 (Steel Tubes Round Square and Rectangular Steel Tubes for Ordinary Longitudinally Pressure Welded and Cold Formed From Flat Products)
A49-647 (Steel Tubes Structural Welded Tubes Circular Square Rectangular or Oval in Ferritic or Austenitic Stainless Steels )