1. Applicable Standard and SpecificationAPI 5L 45eddition Standard specification for seamless line pipeISO 3083 Seamless line pipe ASTM E213 Standard Practice for Ultrasonic Testing of Metal Pipe and TubingASME B16.25Buttwelding endsEN10204Metallic products-Types of inspection documentsASTM E92Standard Test Method for Vickers Hardness of Metallic MaterialsASTM E18Standard Test Method for Rockwell Hardness of Metallic MaterialsISO6508Metallic materials_ Rockwell hardness testISO6507Metallic materials_ Vickers hardness test2. Short introductionGrades covered by this specification are A25 ,Website:http://www.ausinpipeline.com,A ,B (and the following "X" Grades), X42, X46, X52, X56, X60, X65, X70, X80.  The two digit number following the "X" indicates the Minimum Yield Strength (in 000's psi) of pipe produced to this grade.API 5L PSL2 NACE MR 0175 seamless line Pipe is one of our most professional products. The production capacity is 100 thousand tons annually. It is sold well at home and abroad. SMLS is short for seamless steel pipe. Seamless steel pipe for sour service according to NACE MR 0175It is especially used for the environment of sour service. to anti the corrosion of H2S.API 5L PSL2 NACE MR 0175 SMLS is used to resist acid when transporting liquid, oil, gas, etc. The hardness is less than 22HRD.3. DescriptionStandardAPI SPEC 5L PSL1,PSL2, NACE MR 0175/ISO3183OD1/8"-24" (10.3mm-610mm)WT0.049"-2" (1.24mm-50.8mm)LengthRandom Length, Fixed Length, SRL, DRLSteel GradeRolling: BR, X42RNormalized: BN, X42N~X60NQuenched & Tempered: BQ~X60QTMCP/Forming: BM~X80MTMCP: X90M~X120MFormingHot rolled, cold drawn, cold rolledHeat treatmentAnnealed, Bright annealed, Spheroidize annealed, Normalized, Stress relieved, Cold finished, Quenched and Tempered.TestChemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Blow Test, Impact Test),Exterior Size Inspection, Hydrostatic Test, X-ray Test, UT test, HIC/SWC, SSCPackingBlack coating, bitumen coating, FBE, 3PE, 3PP, thermal insulation coated. Fiber glass coated, EpoxyAssuranceAPI/ISO quality system, SGS, DNV, BV, Moody third party inspection welcomed.