Description
- Seamless Steel Pipe & Tube, Carbon Seamless Steel Pipe,SMLS Pipe & Tube,Black Seamless Pipe, GI Seamless PipeSizes:
Maximum diameter: 36″ (914.4mm) minimum diameter: 1/2″ (21.3mm)
Maximum thickness: 60mm mininmum thickness: 2.11mmSCH: SCH10,SCH20,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,SCH160,XXS
Uses:
Chilled water pipe Steam/condensate pipe Heat exchanger pipe Marine/offshore pipe Dredging pipe Industrial pipe Oil and gas pipe Fire fighting pipe Construction/structure pipe Irrigation pipe Drain/sewage pipe Boiler tube Coating
3PE Coating 3PP Coating FBE Coating Epoxy Coating Special Painting Standard of carbon seamless steel pipe
ASTM A53 Gr.B Black and hot-dipped zinc-coated steel pipes welded and seamless ASTM A106 Gr.B Seamless carbon steel for high temperature service ASTM SA179 Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes ASTM SA192 Seamless carbon steel boiler tubes for high pressure ASTM SA210 Seamless Medium-carbon boiler and superheater tubes ASTM A213 Seamless alloy-steel boiler, superheater, and heat-exchanger tubes ASTM A333 GR.6 seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A335 P9,P11,T22,T91 Seamless ferritic alloy-steel pipe for high-temperature service ASTM A336 Alloy steel forgings for pressure and high-temperature parts ASTM SA519 4140/4130 Seamless carbon for mechanical tubing API Spec 5CT J55/K55/N80/L80/P110/K55 Seamless steel pipe for casing API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 Seamless steel pipe for line pipe DIN 17175 Seamless steel tube for elevated temperture DN2391 Cold drawn seamless prevision pipe DIN 1629 Seamless circular unalloyed steel tubes subject to special requirements Chemical components & mechanical properties
Standard Grade Chemical Components (%) Mechanical Properties ASTM A53 C Si Mn P S Tensile STrength(Mpa) Yield STrength(Mpa) A ≤0.25 – ≤0.95 ≤0.05 ≤0.06 ≥330 ≥205 B ≤0.30 – ≤1.2 ≤0.05 ≤0.06 ≥415 ≥240 ASTM A106 A ≤0.30 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≥415 ≥240 B ≤0.35 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≥485 ≥275 ASTM SA179 A179 0.06-0.18 – 0.27-0.63 ≤0.035 ≤0.035 ≥325 ≥180 ASTM SA192 A192 0.06-0.18 ≤0.25 0.27-0.63 ≤0.035 ≤0.035 ≥325 ≥180 API 5L PSL1 A 0.22 – 0.90 0.030 0.030 ≥331 ≥207 B 0.28 – 1.20 0.030 0.030 ≥414 ≥241 X42 0.28 – 1.30 0.030 0.030 ≥414 ≥290 X46 0.28 – 1.40 0.030 0.030 ≥434 ≥317 X52 0.28 – 1.40 0.030 0.030 ≥455 ≥359 X56 0.28 – 1.40 0.030 0.030 ≥490 ≥386 X60 0.28 – 1.40 0.030 0.030 ≥517 ≥448 X65 0.28 – 1.40 0.030 0.030 ≥531 ≥448 X70 0.28 – 1.40 0.030 0.030 ≥565 ≥483 API 5L PSL2 B 0.24 – 1.20 0.025 0.015 ≥414 ≥241 X42 0.24 – 1.30 0.025 0.015 ≥414 ≥290 X46 0.24 – 1.40 0.025 0.015 ≥434 ≥317 X52 0.24 – 1.40 0.025 0.015 ≥455 ≥359 X56 0.24 – 1.40 0.025 0.015 ≥490 ≥386 X60 0.24 – 1.40 0.025 0.015 ≥517 ≥414 X65 0.24 – 1.40 0.025 0.015 ≥531 ≥448 X70 0.24 – 1.40 0.025 0.015 ≥565 ≥483 X80 0.24 – 1.40 0.025 0.015 ≥621 ≥552 Classfication of carbon seamless steel pipe
Types Application Structure Purposes General structure and mechanical Liquid Services Petroleum, gas and other fluids conveying Low and Medium Pressure Boiler Tube Steam and boiler manufacturing Hydraulic Pillar Service Hydraulic support Auto Semi-shaft Casing Auto sem-shaft casing Line Pipe Oil and gas conveying Tubing and Casing Oil and gas conveying Drill Pipes Well drilling Geological Drilling Pipe Geological drilling Furnace tubes, heat exchangers tubes Furnace tubes, heat exchangers Tolerances of carbon seamless steel pipe
Pipe types Pipe sizes(mm) Tolerances Hot rolled OD<50 ±0.50mm OD≥50 ±1% WT<4 ±12.5% WT 4～20 +15%, -12.5% WT>20 ±12.5% Cold drawn OD 6～10 ±0.20mm OD 10～30 ±0.40mm OD 30～50 ±0.45 OD>50 ±1% WT≤1 ±0.15mm WT 1～3 +15%, -10% WT >3 +12.5%, -10% NOMINAL PIPE SIZE OD (mm)
NOMINAL WALL THICKNESS
DN NB(inch) ASME SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80 SCH100 SCH120 SCH140 SCH160 XXS 15 1/2″ 21.3 2.11 2.41 2.77 2.77 3.73 3.73 4.78 7.47 20 3/4″ 26.7 2.11 2.41 2.87 2.87 3.91 3.91 5.56 7.82 25 1″ 33.4 2.77 2.9 3.38 3.38 4.55 4.55 6.35 9.09 32 1.1/4″ 42.2 2.77 2.97 3.56 3.56 4.85 4.85 6.35 9.7 40 1.1/2″ 48.3 2.77 3.18 3.68 3.68 5.08 5.08 7.14 10.15 50 2″ 60.3 2.77 3.18 3.91 3.91 5.54 5.54 8.74 11.07 65 2.1/2″ 73 3.05 4.78 5.16 5.16 7.01 7.01 9.53 14.02 80 3″ 88.9 3.05 4.78 5.49 5.49 7.62 7.62 11.13 15.25 90 3.1/2″ 101.6 3.05 4.78 5.74 5.74 8.08 8.08 100 4″ 114.3 3.05 4.78 6.02 6.02 8.56 8.56 11.13 13.49 17.12 125 5″ 141.3 3.4 6.55 6.55 9.53 9.53 12.7 15.88 19.05 150 6″ 168.3 3.4 7.11 7.11 10.97 10.97 14.27 18.26 21.95 200 8″ 219.1 3.76 6.35 7.04 8.18 8.18 10.31 12.7 12.7 15.09 18.26 20.62 23.01 22.23 250 10″ 273 4.19 6.35 7.8 9.27 9.27 12.7 12.7 15.09 18.26 21.44 25.4 28.58 25.4 300 12″ 323.8 4.57 6.35 8.38 9.53 10.31 14.27 12.7 17.48 21.44 25.4 28.58 33.32 25.4 350 14″ 355.6 6.35 7.92 9.53 9.53 11.13 15.09 12.7 19.05 23.83 27.79 31.75 35.71 400 16″ 406.4 6.35 7.92 9.53 9.53 12.7 16.66 12.7 21.44 26.19 30.96 36.53 40.19 450 18″ 457.2 6.35 7.92 11.13 9.53 14.27 19.05 12.7 23.83 39.36 34.93 39.67 45.24 500 20″ 508 6.35 9.53 12.7 9.53 15.09 20.62 12.7 26.19 32.54 38.1 44.45 50.01 550 22″ 558.8 6.35 9.53 12.7 9.53 22.23 12.7 28.58 34.93 41.28 47.63 53.98 600 24″ 609.6 6.35 9.53 14.27 9.53 17.48 24.61 12.7 30.96 38.89 46.02 52.37 59.54 650 26″ 660.4 7.92 12.7 9.53 12.7 700 28″ 711.2 7.92 12.7 15.88 9.53 12.7 750 30″ 762 7.92 12.7 15.88 9.53 12.7 800 32″ 812.8 7.92 12.7 15.88 9.53 17.48 12.7 850 34″ 863.6 7.92 12.7 15.88 9.53 17.48 12.7 900 36″ 914.4 7.92 12.7 15.88 9.53 19.05 12.7 Production of seamless pipe
The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F. After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed. The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system. The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system. After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.
Ultrasonic Inspection for Small-diameter Seamless Pipe
Ultrasonic inspection is in accordance with pulse-echo method using water gap method. Flow detection is performed by angle beam technique to date longitudinal and transverse flow on the inner and outer surface of pipe, and wall thickness measurement is performed by normal beam technique. The pipe, which is conveyed helically through the testing device, is inspected.Electromagnetic Inspection for Large-diameter Seamless Pipe
Plug mill is equipped with an Amalog-Sonoscope, electromagnetic inspection units after heat treatment. The Amalog-Sonoscope pipe inspection system detects defects by using flux leakage by electromagnetic induction in search coil. Amalog magnetic circuits detect longitudinal defects in both the inside and outside surface. Sonoscope magnetic circuits detect circumferential defects.Magnetic Particle Inspection
The tube is magnetized and provided with magnetic particles (mostly fluorescent magnetic particle). The presence of flaws creates a magnetic flux which shows changes in fluorescent brilliance under black light. The change is detected visually.Carbon seamless steel pipe is a kind of strip steel. Steel pipe with hollow cross-section, a large number of pipes used to transport fluid, such as the transportation of oil, natural gas, gas, water and some solid materials such as pipes. Steel and round steel and other solid steel compared to the same bending strength in the same bending, lighter weight, is an economic section of steel, is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, Bicycle frames and steel construction scaffolding. The use of carbon seamless steel pipe manufacturing ring parts can improve material utilization, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, jackets, etc., has been widely used to manufacture steel pipe.
