API LSAW Welded Pipes
- Ref Price:
-
- Loading Port:
- SHANG HAI PORT
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- Based On Order m.t./month
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LSAW Welded Steel Pipes
Application:
It is widely applied to line pipe in oil and sewage transportation , and it is used in Low pressure liquid and gassy transportation and it is also good Structure pipe in building and bridge field.
Package: bundles with anti-rust painting and with plastic caps
Standard of LSAW Welded Steel Pipes: APISPEC 5L
Grade：API 5L GR.B, X40, X42, X52, X56, X60, X65, X70
Size:
OD: 406.4MM-1422MM (16”-56”)
Thickness: 8MM-50.8MM depends on OD
Standard: APISPEC 5L
Mechanical Properties of LSAW Welded Steel Pipes
Standard | Grade | （MPa） | （MPa） | ||
Yield strength | Tensile Strength | ||||
API SPEC 5L | PSL1 | ||||
B | ≥241 | ≥414 | |||
×42 | ≥290 | ≥414 | |||
×46 | ≥317 | ≥434 | |||
×52 | ≥359 | ≥455 | |||
×56 | ≥386 | ≥490 | |||
×60 | ≥414 | ≥517 | |||
×65 | ≥448 | ≥531 | |||
×70 | ≥483 | ≥565 | |||
PSL2 | |||||
| Min | Max | Min | Max | |
B | 241 | 448 | 441 | 758 | |
×42 | 290 | 496 | 414 | 758 | |
×46 | 317 | 524 | 434 | 758 | |
×52 | 359 | 531 | 455 | 758 | |
×56 | 386 | 544 | 490 | 758 | |
×60 | 414 | 565 | 517 | 758 | |
×65 | 448 | 600 | 531 | 758 | |
×70 | 483 | 621 | 565 | 758 | |
- Q:What are the different methods of insulating steel pipes?
- There exists a variety of methods for insulating steel pipes, depending on the specific needs and requirements of the application. Some commonly utilized methods include: 1. Insulation wraps: By enveloping the steel pipes with insulating materials such as fiberglass, mineral wool, or foam insulation and securing them tightly with adhesive or tape, insulation wraps offer a cost-effective and straightforward installation option favored by many. 2. Insulation coatings: Applying a layer of insulating material directly onto the surface of the steel pipe, insulation coatings made from materials like epoxy, polyurethane, or polyethylene protect against corrosion and temperature fluctuations, making them ideal for harsh environments. 3. Insulation jackets: Utilizing pre-fabricated insulation jackets designed to fit over the steel pipes, this method combines insulation materials with a weatherproof outer layer. Insulation jackets are commonly employed for outdoor or exposed pipelines, providing excellent insulation and protection against external elements. 4. Insulation foam: Injecting foam insulation into the space between the steel pipe and an outer casing, the foam expands and hardens to create a sealed and well-insulated layer. Apart from preventing heat loss or gain, foam insulation also offers remarkable soundproofing properties. 5. Insulation tapes: Specially designed insulation tapes made from PVC or rubber, possessing good insulating properties, are wrapped around smaller pipes or joints. This flexible and easy-to-apply solution is commonly employed. When selecting the appropriate method to insulate steel pipes, it is crucial to consider factors such as operating temperature, environmental conditions, and specific application requirements. Seeking advice from a professional or insulation specialist can assist in determining the most suitable insulation method for individual needs.
- Q:How do steel pipes perform in extreme weather conditions?
- Steel pipes are highly resilient and perform exceptionally well in extreme weather conditions. They have excellent resistance to corrosion, impact, and temperature variations, making them ideal for withstanding harsh environments such as extreme heat, cold, and heavy rainfall. Moreover, steel pipes are known for their durability and strength, ensuring that they can withstand the forces exerted by high winds, snow, and even seismic activities. Overall, steel pipes are a reliable choice for various applications in extreme weather conditions.
- Q:Is there any difference between HFW steel pipe and ERW steel pipe?
- The difference between ERW (longitudinal resistance welding) and HFW (high frequency welding) is mainly due to the different principle.
- Q:What are the common sizes of steel pipes available?
- The common sizes of steel pipes available vary widely depending on the application, but some standard sizes include 1/8 inch, 1/4 inch, 1/2 inch, 3/4 inch, 1 inch, 2 inch, 3 inch, 4 inch, 6 inch, 8 inch, 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, 30 inch, 36 inch, 42 inch, 48 inch, 60 inch, and 72 inch.
- Q:What are the different methods of joining steel pipes together?
- There are multiple techniques for connecting steel pipes, each with its own pros and cons. 1. Welding, the most commonly used method, involves heating and applying pressure to fuse the pipe ends. This creates a robust joint, but it necessitates skilled labor and specialized equipment. 2. Threaded connections involve threading the ends and using fittings to connect the pipes. This method is relatively simple and quick, but it may not be as strong as welding and can be prone to leakage if not sealed properly. 3. Flanged connections involve using flanges and bolts to connect the pipes. This allows for easy disassembly and reassembly, making it suitable for applications that require frequent maintenance. Flanged connections are also highly resistant to leakage. 4. Compression fittings involve compressing a ring or ferrule onto the pipe to create a tight seal. This method is straightforward and does not require heat or welding, making it ideal for applications where heat or sparks are prohibited. 5. Grooved connections involve cutting grooves into the pipe ends and using mechanical couplings to secure them. This method is fast, reliable, and allows for easy assembly and disassembly. Grooved connections are commonly used in fire protection systems. 6. Brazing, similar to welding, involves heating the pipe ends and adding filler material to join them. This method is often used for smaller diameter pipes and provides a strong joint, but it requires a high-temperature torch and skilled labor. Each method has its own advantages and is suitable for different applications. The choice of joining method depends on factors such as required strength, ease of installation, maintenance requirements, and pipe type.
- Q:What is the difference between seamless and welded steel pipes?
- The main difference between seamless and welded steel pipes lies in their manufacturing process. Seamless pipes are made by piercing a solid billet of steel, while welded pipes are formed by rolling steel sheets and then welding them together. This difference in production methods results in varying levels of strength, durability, and cost. Seamless pipes are generally stronger and more reliable, as they have no welded seams that can weaken the pipe. However, they are also more expensive to produce. On the other hand, welded pipes are more cost-effective but may have weaker points at the welded seams. Ultimately, the choice between seamless and welded steel pipes depends on the specific application and requirements of the project.
- Q:What are the common sizes of steel pipe fittings?
- Depending on the particular application and industry regulations, the sizes of steel pipe fittings can vary. Nevertheless, there are numerous standard sizes that are commonly utilized in various industries. These sizes encompass a range from ¼ inch to 48 inches in diameter. Among the most frequently used sizes are ½ inch, ¾ inch, 1 inch, 1 ¼ inch, 1 ½ inch, 2 inch, 2 ½ inch, 3 inch, 4 inch, 6 inch, 8 inch, 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, 30 inch, 36 inch, 42 inch, and 48 inch. These sizes are often obtainable in different lengths to accommodate diverse installation requirements. To determine the appropriate size of steel pipe fittings for a specific project, it is crucial to refer to industry standards and specifications.
- Q:Do steel pipes expand or contract with temperature changes?
- When the temperature increases, steel pipes undergo expansion, while they contract when the temperature decreases. This occurrence is due to the thermal expansion and contraction characteristics of steel, which are present in most materials. When steel pipes are heated, the molecules within the metal gain energy and vibrate more intensely, causing them to separate and increase in size. On the contrary, when the temperature of the steel pipes decreases, the molecules lose energy and move closer together, resulting in a reduction or shrinking in size. It is crucial to take into consideration these thermal expansion and contraction properties of steel pipes during their design and installation, as failure to accommodate these fluctuations might result in structural damage, leaks, or other complications.
- Q:What are the different methods of pipe inspection for steel pipes?
- Steel pipes can be inspected using various methods. Here are some commonly employed techniques: 1. Visual Inspection: Trained inspectors visually examine both the exterior and interior of the pipe to detect any visible defects or abnormalities. This preliminary method is often used before more advanced techniques are applied. 2. Magnetic Particle Inspection (MPI): By applying a magnetic field to the steel pipe and iron particles to its surface, inspectors can identify surface cracks or defects. Leakage of magnetic flux caused by these abnormalities can be detected with this method, which is particularly effective for ferromagnetic materials. 3. Ultrasonic Testing (UT): UT is a non-destructive testing method that utilizes high-frequency sound waves to identify internal defects or anomalies in steel pipes. A transducer sends ultrasonic waves into the pipe, and reflections or echoes of the sound waves are analyzed to determine the presence of defects, such as corrosion, cracks, or variations in wall thickness. 4. Radiographic Testing (RT): This method involves using X-rays or gamma rays to create an image of the internal structure of the steel pipe. The resulting image reveals any defects, such as cracks, corrosion, or weld discontinuities. RT is commonly used for inspecting welded joints. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing technique that utilizes electromagnetic induction to detect surface and near-surface defects in steel pipes. By passing a coil carrying an alternating current over the pipe's surface, any changes in electrical conductivity or magnetic field caused by defects are detected and analyzed. 6. Acoustic Emission Testing (AET): AET involves detecting and analyzing high-frequency acoustic signals emitted by materials undergoing deformation or damage. In the case of steel pipes, AET can monitor and identify defects like cracks, leaks, or corrosion by analyzing the acoustic signals emitted during service or under stress. These methods are just a few examples of commonly used techniques for inspecting steel pipes. The choice of method depends on factors such as the type of defect being sought, accessibility of the pipe, desired sensitivity level, and cost and time constraints. Using a combination of inspection techniques is often recommended to ensure a thorough assessment of steel pipes.
We has nine sets of machine unit for Φ219-Φ2850 of SAWH steel pipe with an annual production capacity of around 260,000 tons, two sets of SAWL production lines: one with Φ1422 maximum and one Φ813 maximum with an annual production of 200,000 tons, two sets of machine unit for Φ168 maximum and Φ508 maximum HFW steel pipe with an annual production volume of around 160,000 tons, four sets of machine unit of square and rectangle pipe for the size of 200×200, 400×400, 250×250, 300×300 with an annual production capacity of around 140,000 tons and two sets of machine unit for internal and external coating with an annual production capacity of 2,000,000 sq.meters.
1. Manufacturer Overview |
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|---|---|
| Location | Wuxi, China |
| Year Established | 1980 |
| Annual Output Value | Above Three Million To Five Million RMB |
| Main Markets | Main land |
| Company Certifications | Certificate of Conformity; API 5CT |
2. Manufacturer Certificates |
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|---|---|
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period | |
3. Manufacturer Capability |
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|---|---|
| a)Trade Capacity | |
| Nearest Port | Shanghai |
| Export Percentage | 30%-40% |
| No.of Employees in Trade Department | 1400 People |
| Language Spoken: | English; Chinese |
| b)Factory Information | |
| Factory Size: | 1500 square meters |
| No. of Production Lines | Above 14 |
| Contract Manufacturing | CNPC;Sinopec Group |
| Product Price Range | Average |
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API LSAW Welded Pipes
- Ref Price:
-
- Loading Port:
- SHANG HAI PORT
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- Based On Order m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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