Coated ERW Line Pipe

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Standard: API 5L PSL1/PSL2, DIN30670, NACE MR 01-75 Grade:A/B/X42/X46/X52/X56/X60/X65/X70 OD:1/16"-26",WT:0.3mm-22mm Application Used for construction of long distance pipelines for combustible liquids and gases, nuclear station pipelines, heating system pipelines, general-purpose pipelines, vessels manufacturing, mechanical engineering and instrumental engineering. DISTINCTIVES FEATURES Line pipes are manufactured of metal in-house produced and smelted in the electric furnace, treated with synthetic slags and cast by continuous casters. The applied steel making process ensures the achievement of chemically pure steel with reference to sulphur and phosphor contents providing high tensile, ductility and corrosion resistance properties of pipes to be operated at low temperatures in various corrosion media. Rolling using a press piercing mill and continuous mill equipped with a fixed mandrel allows strict measurement tolerances to be obtained and ensures a lack of pipe body and surface defects. In order to achieve high tensile and ductility steel as well as its required structure, providing a high corrosion resistance in various corrosion media, pipes are heat treated in a computerized walking beam furnace. 70% of oil line pipes are subject to heat treatment. Pipes are inspected for internal and external flows by automatic non-distructive testing of ultrasonic and electromagnetic inspection. Pipe ends inspection after beveling is done by magnetic-fluoroscopic flaw detection. While manufacturing seamless line pipes ensures testing of corrosion-resistance properties through hydrogen included cracking method under NACE MR 02-84 and sulphide stress corrosion cracking method under NACE MR 01-77. All hot-finishing processes are done and completed above a temperature of 860ºC. The hardness of the material is in all instances below 22HRc, thus complying with the NACE MR 01-75 requirement for carbon steels. Process ERW (Electric Resistance Welded) HFI (High Frequency Induction) EFW(ELECTRIC FUSION WELDED TUBE) Quality Standard ERW HFI , EFW GB/T3091 Welded steel pipe for low pressure liquid delivery GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines EN10217 Welded steel tubes for pressure purposes. IS 3589 Steel tubes for water and sewage IS 1978-1982 Steel tubes for use in transportation of oil; gas & Petroleum products BS 1387 Steel Tubes for use for Water, Gas, Air and Steam ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless DIN 2458 WELDED STEEL PIPES AND TUBES API 5L Line Pipe Coating Standard ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems DIN 30670 Polyethylen coatings of steel pipes and fittings Steel Grade GB/T3091 SY/T5037 SY/T 5040CJ/T 3022 Q195 Q215 Q235 Q275 Q295 Q345 08F 08 08AL 08F 10F 10 HG5 DF08 SPHC M8 BS 1387 EN10217 S185 S235 S235JR S235 G2H S275 S275JR S355JRH S355J2H St12 St13 St14 St33 St37 St44 ST52 ASTM A 53 Gr. A Gr B Gr C Gr.D API 5L A B X42 X46 X52 X56 X60 X65 X70 GB/T9711 L175 L210 L245 L290 L320 L360 L290 L320 L360 L390 L415 L450 L485 L555 Size ERW HFI EFW Outer Diameter 6mm-660mm (1/16"-26") Wall Thickness 0.3mm-22mm Length 0.5mtr-20mtr End square ends (straight cut saw cut and torch cut); beveled for welding (All line piping is square cut to the tolerance specified and bevelled to ANSI B16.25. An angle of 30º (-0º +5º) and a landing of 16 mm ±08 mm is applied. Schedule 160 material is supplied without bevelling.) Surface Lightly oiled Hot dip galvanized Electro galvanized Black Bare Varnish coating/Anti rust oil Protective Coatings (Coal Tar Epoxy Fusion Bond Epoxy 3-layers PE) Test Chemical Component Analysis Mechanical Properties (Ultimate tensile strength Yield strength Elongation) Technical Properties (Flattening Test Bending Test Hardness Test Blow Test Impact Test etc.) Exterior Size Inspection Hydrostatic Test(The standard pressure is limited to 207 MPa (3000 psi)) X-ray Test. Mill Test Certificate EN 10204/3.1B Third party inspection SGS BV Lloyds etc.

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Shanghai Unite Steel Trading Co.,Ltd

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