SEAMLESS STEEL PIPE
API 5CT Tubing,API 5CT Petroleum Tubing, Oilfield Steel Tubing, BORUN Casing Tubing Manufacturer
July 26, 2016
API CASING COUPLING ,TUBING COUPLINGS
July 29, 2016
Seamless (SMLS) steel pipe and seamless line pipe
Seamless Carbon Steel Pipes use steel billets as basic material. It is the kind of pipelines without joints around the body which is good to be requested conveying liquids (such as oil, gas, water), so it has a very high intake amount in the oil as well as gas industries all over the world.
SPECIFICATIONS of Seamless (SMLS) steel pipe
- Hot Rolled: 88.9 mm ~ 508 mm.
- Hot Expanded: 457mm ~ 914.4 mm.
- Cold Drawn: 10.3 mm ~ 73mm
- Length: 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
- Standard:API5L/ API5CT/ASTM A53/A106/A179/ A500/A501, JIS G3441/G3444/G3454, DIN 10210/10219, DIN 17175 etc
- Steel Grade:20#, Q345, A106/53B, A179, S275, S355,GR.B/X42/X46/X56, ST44/37/ A500, J55-P110
- SurfaceTreatment: Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating.
- Packing:Steel Strips bundled/In Bulk, Plastic Caps connected, waterproof plastic
- End :Plain Ends ,Beveled End, Threaded with couplings
- Application: Mainly used for high-temperature liquids transmission (water, heavy steam as well as various other high-temperature liquids), machinery, steel constructions, electricity industry, power plants etc
If you’re thinking about seamless steel pipelines for your following commercial pipe project, please call us and ask for a quote. As a prominent worldwide steel pipe vendor, we could provide you with the items you need and promptly ship your order to anywhere in the globe.
Energy-specific steel seamless tubular products created, checked, and generated in the CHINA.
The chemical composition and mechanical properties of our seamless steel pipe are those prescribed by present standards like API, ASTM, ASME etc . More information can be found below:
| 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 A179 | A179 | 0.06-0.18 | – | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 | |
| ASTM A192 | 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 | ||
| Standard | Grade | Chemical composition | Mechanical Properties | |||||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | ||
| GB/T8163 | 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 | 335-457 | ≥205 | ≥24 |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | ≤0.25 | 410-550 | ≥245 | ≥20 | |
| Q345 | 0.12-0.20 | 0.20-0.55 | 1.20-1.60 | ≤0.045 | ≤0.045 | – | – | – | 490-665 | ≥325 | ≥21 | |
Tolerance
| Pipe types | Pipe Szie(mm) | Tolerances | |
| Hot rolled | OD | All | ±1% (min ±0.50mm) |
| WT | All | +15%, -12.5% | |
| Cold drawn | OD | 6～10 | ±0.20mm |
| 10～30 | ±0.40mm | ||
| 30～50 | ±0.45mm | ||
| >50 | ±1% | ||
| WT | ≤1 | ±0.15mm | |
| >1～3 | +15% -10% | ||
| >3 | +12.5% -10% | ||
pipe Classification
| Types | Application |
| Structure Purposes | General structure and mechanical |
| Liquid Services | Petroleum, gas and other fluids conveying |
| Low and Medium Pressure | 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 |
| Petroleum Cracking Tubes | Furnace tubes, heat exchangers |
The seamless steel pipe manufacturing process starts with a solid, round steel billet.
This billet is after that heated to excellent temperature levels as well as extended and stoppeded a form till it takes the form of a hollow tube. As other steel pipe vendors will tell you, there are 3 wonderful advantages making a pipe this way.
Increased Pressure Ratings
The biggest benefit of seamless steel pipes is their boosted capacity to endure stress. The weakest factor in a bonded steel pipe is the bonded seam. Because a seamless steel pipe has actually not been bonded, it does not have that seam, making it equally strong around the whole circumference of the pipe.
It is likewise a lot easier to establish pressure estimations without being needed to take weld top quality right into factor to consider.
Although seamless pipe could occasionally be many more expensive than welded pipe, this boosted capacity to stand up to stress permits you to utilize pipes that are thinner and also lighter, which can assist reduce costs.
Seamless steel pipe is a constant extrusion of the alloy, indicating that it will certainly have a round sample that you could rely on, which is helpful when you’re mounting pipes or adding installations.
Strength Under Loads
Seamless steel pipe could in some cases be many more costly compared to other kinds of steel pipe, however it’s also a lot more trusted.
2 Comments
could you tell me the making process of seamless pipe & tubes?
round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold rolled) → blank tube → heat treatment → straightening →hydrostatic testing (testing) → mark → storage.
The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.