Introduction to Seamless Pipe:
A seamless pipe is a type of steel pipe that is manufactured without any welding seam or joint along its length. It is produced by piercing a solid billet of steel to form a hollow cylindrical shape, which is then elongated and shaped into the desired diameter and thickness through hot or cold rolling processes. Seamless pipes are widely used in various industries for conveying fluids, gases, and solids under high-pressure and high-temperature conditions.
Grades : Q 235,Q355,S235,S235JR, SS400, A36,A572 etc.
Carbon Steel Seamless Steel Pipe and Round Steel and Other Solid Steel, in the Bending and Torsional Strength of the Same Weight is Lighter, is a Kind of Economic Section of Steel, Widely Used in the Manufacture of Structural Parts and Mechanical Parts, Such As Oil Drill Pipe, Automobile Drive Shaft, Bicycle Frame and Construction Used in Steel Scaffolding. This Standard is Applicable to the Chemical Composition, Mechanical Properties, Test Methods, Inspection Rules, Dimensions and Weight of the Carbon Steel Seamless Steel Tubes Used for Grade 2 and Grade 3 Equipment of the Second Generation Plus Nuclear Power Stations of M310 Type.
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Product Name | Seamless Steel Pipe |
Material | A53 Gr.B,A36,ST52,ST35,ST42,ST45,X42,X46,X52,X60,X65X70 |
Standard | API 5L,ASTM A106 Gr.B,ASTM A53 Gr.B,ASTM A179/A192,ASTM A513,ASTM A671,ASTM A672,BS EN 10217,BS EN10296,BS EN 39,BS6323,DIN EN10217 |
Certificates | API 5L,ISO9001,SGS,BV,CCIC |
Outer Diameter | 15mm-1200mm |
Wall Thickness | SCH10,SCH20,SCH30,STD,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XS,XXS |
Length | 1m,4m,6m,8m,12m according to buyer's request |
Surface Treatment | black paint,varnish,oil,galvanized,anti-corrosion coated |
Marking | Standard marking,or according to your request.Marking Method:Spray white paint |
End Treatment | Plain End/Bevelled End/Grooved End/Threaded End With Plastic Caps |
Technique | Hot Rolled or Cold Rolled ERW |
Package | Loose package;Packaged in bundles(2Ton Max);bundled pipes with slings at the both end for easy loading and discharging;wooden cases;waterproof woven bag |
Test | Chemical Component Analysis,Mechanical Properties,Technical Properties,Exterior Size Inspection,hydraulic testing,X-ray Test |
Application | Liquid delivery,structure pipe,construction,petroleum cracking,oil pipe,gas pipe |
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 |
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% |
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 | - | 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 |
|
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ASTM A500 Gr.A carbon steel Black hollow section square and rectangular tube 38x38
