API ERW Line Pipes
- Loading Port:
- China Main 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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ERW Welded Steel Pipes
Application of API ERW Line Pipes :
It is widely applied to line pipe and casing and tubing in oil transportation and casing field, and it is used in Low,high pressure liquid and gassy transportation and it is also good Structure pipe (for furniture, window, door, building , bridge, mechanical etc).
Package of API ERW Line Pipes:
bundles with anti-rust painting and with plastic caps
Standard of API ERW Line Pipes:
API SPEC 5L, API SPEC 5CT, ASTM A53, GB/T9711.1
Steel Grade of API ERW Line Pipes:
API SPEC 5L: B, X42, X46, X52, X56, X60, X65
API SPEC 5CT: J55, K55, N80, L80-1
ASTM A53: A, B, C
GB/T9711.1:L242、L290、L320、L360、L390、L415、L450
Sizes of pipes of API ERW Line Pipes:
*Remark: Besides below sizes, we also can arrange production based on requirement of customers
OD | WT | WEIGHT | ||||
INCH | MM | SCH | MM | INCH | KG/M | LB/INCH |
1 1/2” | 48.3 | STD-40 | 3.68 | 0.145 | 4.09 | 2.75 |
1 1/2” | 48.3 | XS-80 | 5.08 | 0.2 | 5.47 | 3.68 |
2” | 60.3 | STD-40 | 3.91 | 0.154 | 5.49 | 3.69 |
2” | 60.3 | XS-80 | 5.54 | 0.218 | 7.56 | 5.08 |
2 1/2” | 73 | STD-40 | 5.16 | 0.203 | 8.72 | 5.86 |
2 1/2” | 73 | XS-80 | 7.01 | 0.276 | 11.52 | 7.74 |
3” | 88.9 | STD-40 | 5.49 | 0.216 | 11.41 | 7.67 |
3” | 88.9 | XS-80 | 7.62 | 0.3 | 15.43 | 10.37 |
3 1/2” | 101.6 | STD-40 | 5.74 | 0.226 | 13.71 | 9.21 |
3 1/2” | 101.6 | XS-80 | 8.08 | 0.318 | 18.83 | 12.65 |
4” | 114.3 | STD-40 | 6.02 | 0.237 | 16.24 | 10.91 |
4” | 114.3 | XS-80 | 8.56 | 0.337 | 22.55 | 15.15 |
5” | 141.3 | STD-40 | 6.55 | 0.258 | 21.99 | 14.78 |
5” | 141.3 | XS-80 | 9.53 | 0.375 | 31.28 | 21.02 |
6” | 168.3 | STD-40 | 7.11 | 0.28 | 28.55 | 19.19 |
6” | 168.3 | XS-80 | 10.97 | 0.432 | 42.99 | 28.89 |
8” | 219.1 | STD-40 | 8.18 | 0.322 | 42.98 | 28.88 |
8” | 219.1 | XS-80 | 12.7 | 0.5 | 65.3 | 43.88 |
10” | 273 | STD-40 | 9.27 | 0.365 | 60.9 | 40.92 |
10” | 273 | 80 | 15.09 | 0.594 | 96.95 | 65.15 |
12” | 323.8 | STD | 9.53 | 0.375 | 74.61 | 50.13 |
12” | 323.8 | 40 | 10.31 | 0.406 | 80.51 | 54.1 |
12” | 323.8 | XS | 12.7 | 0.5 | 98.42 | 66.14 |
12” | 323.8 | 80 | 17.48 | 0.688 | 133.38 | 89.63 |
14” | 355.6 | 40 | 11.13 | 0.438 | 95.51 | 64.18 |
14” | 355.6 | XS | 12.7 | 0.5 | 108.48 | 72.9 |
14” | 355.6 | 80 | 19.05 | 0.75 | 159.71 | 107.32 |
16” | 406.4 | XS-40 | 12.7 | 0.5 | 124.55 | 83.69 |
18” | 457 | STD | 9.53 | 0.375 | 106.23 | 71.38 |
18” | 457 | 40 | 14.27 | 0.562 | 157.38 | 105.75 |
18” | 457 | 80 | 23.83 | 0.938 | 257.13 | 172.78 |
20” | 508 | 40 | 15.09 | 0.594 | 185.28 | 124.5 |
20” | 508 | 80 | 26.19 | 1.031 | 314.33 | 211.22 |
Machinical Properties
Standard | Grade | (MPa) | (MPa) | Min(%) |
Yield strength | Tensile Strength | Elongation | ||
GB/T9711.1 | L245 | ≥245 | ≥415 | 21 |
L290 | ≥290 | ≥415 | 21 | |
L320 | ≥320 | ≥435 | 20 | |
L360 | ≥360 | ≥460 | 19 | |
L390 | ≥390 | ≥490 | 18 | |
L415 | ≥415 | ≥520 | 17 | |
L450 | ≥450 | ≥535 | 17 | |
L485 | ≥485 | ≥570 | 17 |
Chemical Composition(%)
Standard | Grade | C | Mn | P | S |
Max | Max | Max | Max | ||
GB/T9711.1 | L245 | 0.26 | 0.15 | 0.030 | 0.030 |
L290 | 0.28 | 1.25 | 0.030 | 0.030 | |
L320, L360 | 0.30 | 1.25 | 0.030 | 0.030 | |
L390, L415 | 0.26 | 1.35 | 0.030 | 0.030 | |
L450 | 0.26 | 1.40 | 0.030 | 0.030 | |
L485 | 0.23 | 1.60 | 0.025 | 0.030 |
Standard: GB/9711.2
Mechanical Properties
Standard | Grade | (MPa) Yield strength | (MPa) Tensile Strength | Min(%) Elongation | ||
|
| |||||
GB/T9711.2 |
| Rt0.5Min | Rt0.5Max | RmMin | Rt0.5/Rm Max |
|
L245 |
245 |
440 |
| 0.80 |
22 | |
L245 | 0.85 | |||||
L290 |
290 |
440 |
| 0.80 | 21 | |
L290 | 0.85 | |||||
L360 |
360 |
510 |
| 0.85 |
20 | |
L360 | 0.85 | |||||
L415 |
415 |
565 |
| 0.85 |
18 | |
L415 | 0.85 | |||||
L450 | 450 | 570 | 535 | 0.87 | 18 | |
L485 | 485 | 605 | 570 | 0.90 | 18 |
Chemical Composition (%)
Standard | Grade | C | Mn | P | S | V | Nb | Ti | CEV |
Max | Max | Max | Max | Max | Max | Max | Max | ||
GB/T9711.2 | L245NB | 0.16 | 1.1 | 0.025 | 0.020 | - | - | - | 0.42 |
L290NB | 0.17 | 1.2 | 0.025 | 0.020 | 0.05 | 0.05 | 0.04 | 0.42 | |
L360NB | 0.20 | 1.6 | 0.025 | 0.020 | 0.10 | 0.05 | 0.04 | 0.45 | |
L415NB | 0.21 | 1.6 | 0.025 | 0.020 | 0.15 | 0.05 | 0.04 | - | |
L245NB, L290NB |
0.16 |
1.5 | 0.025 | 0.020 |
0.04 |
0.04 |
- |
0.4 | |
L360NB | 0.16 | 1.6 | 0.025 | 0.020 | 0.05 | 0.05 | 0.04 | 0.41 | |
L415NB | 0.16 | 1.6 | 0.025 | 0.020 | 0.08 | 0.05 | 0.06 | 0.42 | |
L450NB | 0.16 | 1.6 | 0.025 | 0.020 | 0.10 | 0.05 | 0.06 | 0.43 | |
L485NB | 0.16 | 1.7 | 0.025 | 0.020 | 0.10 | 0.06 | 0.06 | 0.43 |
Standard: ASTM A53
Mechanical Properties
Standard | Grade | (MPa) | (MPa) |
Yield strength | Tensile Strength | ||
ASTM A53M | A | 205 | 330 |
B | 240 | 415 |
Chemical Composition(%)
Standard | Grade | C | Mn | P | S | V | Ni | Cu | Cr | Mo |
Max | Max | Max | Max | Max | Max | Max | Max | Max | ||
ASTM A53M | A | 0.25 | 0.95 | 0.05 | 0.045 | 0.08 | 0.4 | 0.5 | 0.4 | 0.15 |
B | 0.30 | 1.20 | 0.05 | 0.045 | 0.08 | 0.4 | 0.5 | 0.4 | 0.15 |
Raw Materials of ERW Pipes
Unfold Machine
Production Line
ERW UT Offline Weld Flaw Detection Machine
- Q: What are the specific differences between flexible pipes and rigid pipes?
- Structurally:A rigid waterproof sleeve is welded with a water stop ring outside the steel pipe;The flexible waterproof casing pipe is welded on the outside of the 3 side wing ring, 4 screw buckle, inside a welding piece with a rubber ring, the outside and do a flange, with 4 double head bolt, welding a steel pipe, the pipe installed, the flange is installed. The screw fastening, tightening the apron is bigger, more Water Leakage, generally in the waterproof requirements of relatively high places, such as the pool of water.
- Q: What are the common methods for repairing steel pipes?
- Depending on the nature and extent of the damage, there are several common methods available for repairing steel pipes. One method frequently used is welding. This technique involves melting the damaged area and fusing it with a new piece of steel. Welding is typically employed for small cracks or holes in the pipe. Different welding techniques, such as shielded metal arc welding (SMAW), gas metal arc welding (GMAW), or tungsten inert gas (TIG) welding, can be utilized. Another option is pipe wrapping or bandaging. This method entails wrapping a layer of adhesive tape or resin-soaked fiberglass around the damaged section of the pipe. It is suitable for addressing small leaks or corrosion spots and serves as a temporary solution until a more permanent fix can be implemented. If the damage is extensive or the pipe suffers severe corrosion, pipe lining or relining may be necessary. This involves inserting a new pipe liner inside the existing one, effectively creating a new pipe within the old one. Various materials, such as epoxy, polyethylene, or cured-in-place pipe (CIPP), can be used for this method. Pipe lining is commonly employed for larger diameter pipes or when replacement is not feasible. In some instances, minor leaks or cracks can be repaired using pipe clamps or sleeves. These devices are designed to be clamped around the damaged section and can provide either a temporary or permanent solution, depending on the severity of the damage. Ultimately, the choice of repair method depends on factors such as the extent of the damage, accessibility of the damaged area, budget constraints, and the required long-term durability. It is advisable to consult with a professional pipe repair specialist to assess the specific situation and determine the most suitable method for repairing steel pipes.
- Q: What are the different types of steel pipe fittings?
- Some of the different types of steel pipe fittings include elbow fittings, tee fittings, cross fittings, coupling fittings, nipple fittings, and cap fittings.
- Q: How are steel pipes used in plumbing?
- Steel pipes are commonly used in plumbing systems to transport water, gas, and waste materials. They are durable, strong, and resistant to corrosion, making them suitable for both residential and commercial plumbing applications. Steel pipes are typically used for water supply lines, drainage systems, and venting pipes, ensuring efficient and reliable plumbing infrastructure.
- Q: How are steel pipes used in the oil and gas pipeline transportation?
- Due to their durability, strength, and resistance to corrosion, steel pipes find extensive use in the oil and gas industry for pipeline transportation. Specifically designed to withstand high pressure and transport various fluids, including crude oil, natural gas, and refined petroleum products, these pipes serve three main purposes in the industry: gathering, transmission, and distribution. Gathering pipelines collect oil and gas from production wells and transport them to processing facilities. Steel pipes are chosen for their ability to endure harsh conditions at extraction sites and effectively transport fluids across long distances. Transmission pipelines, on the other hand, transport oil and gas across vast distances, even spanning countries or continents. Steel pipes are perfect for this task, excelling in handling high pressure and ensuring the efficient flow of fluids over extended distances. To safeguard against external elements and minimize damage risks, these pipes are often buried underground or submerged in water. Distribution pipelines deliver oil and gas to end-users, such as homes, businesses, and industrial facilities. Steel pipes are frequently employed in these pipelines due to their capability to handle varying demand and pressure requirements of different consumers. Though smaller in diameter compared to transmission pipelines, they still provide reliable and safe transportation of oil and gas to their final destinations. Besides their strength and durability, steel pipes used in oil and gas pipeline transportation are coated or lined with different materials to enhance corrosion resistance and reduce the risk of leaks. These protective coatings and linings ensure the pipes' longevity and preserve the integrity of the transported fluids. In summary, steel pipes play a vital role in the oil and gas industry by providing a dependable and efficient means of transporting oil and gas from production sites to processing facilities and ultimately to end-users. Their durability, strength, and resistance to corrosion make them an ideal choice for pipeline transportation in this industry.
- Q: What is the role of steel pipes in the renewable energy sector?
- Steel pipes play a crucial role in the renewable energy sector as they are commonly used for transporting various fluids, including water, steam, and gases, in renewable energy systems. They are extensively utilized in the construction of wind turbines, solar power plants, and geothermal installations. Steel pipes are employed for the transportation of water in hydroelectric power plants and for the transmission of heat in concentrated solar power systems. Additionally, they are instrumental in the distribution and storage of fuels such as hydrogen and biogas, which are vital components of renewable energy technologies. Overall, steel pipes provide a reliable and durable means of transporting resources and energy within the renewable energy sector.
- Q: Can steel pipes be used for solar energy systems?
- Yes, steel pipes can be used for solar energy systems. Steel pipes are commonly used for the construction of solar water heating systems and solar thermal collectors. They are durable, resistant to corrosion, and can efficiently transport hot water or heat transfer fluids, making them suitable for various solar energy applications.
- Q: What are the different methods of joining steel pipes without welding?
- There are multiple ways to connect steel pipes without welding. These include: 1. Mechanical Couplings: These couplings consist of two separate pieces that attach to the pipe ends and then tighten together. They provide a secure and leak-proof connection, eliminating the need for welding. 2. Threaded Connections: This method involves threading the ends of the steel pipes to create a male and female connection. The pipes are then screwed together using pipe threads, creating a strong and dependable joint. 3. Flanged Connections: Flanges are utilized to connect steel pipes by bolting them together. The flanges have a flat surface with holes that align with corresponding holes in the opposing flange. Bolts are inserted and tightened to establish a tight seal. 4. Grooved Connections: This technique involves grooving the pipe ends and using grooved couplings to join them. The couplings have teeth that interlock with the grooves, resulting in a secure and rigid connection. 5. Compression Fittings: Compression fittings are employed to connect steel pipes by compressing a metal or plastic ring onto the outer surface of the pipe. This creates a tight seal and a reliable connection without welding. 6. Adhesive Bonding: Special adhesives designed for bonding metals can be used to connect steel pipes. The adhesive is applied to the pipe surfaces, which are then pressed together and left to cure, forming a strong and durable bond. 7. Clamping: Clamps can be used to hold steel pipes together, creating a temporary connection. This method is commonly used for testing purposes or in situations where the pipes need to be easily dismantled. Each of these methods has its own benefits and limitations, and the choice depends on various factors such as the specific application, pipe material, and required joint strength.
- Q: There are multiple welded galvanized steel pipe outer diameter 108mm wall thickness 4mm length of 6 meters
- Galvanized steel pipe wall thickness weight outer diameter 108mm 4mm 6 meters in length is about 10.26*6*1.06=65 kg.Kg/m= (outside diameter mm-, wall thickness mm) * wall thickness mm*0.02466= (108-4) *4*0.02466=10.26 kg / MBecause of galvanizing, the weight is heavier than that of ordinary welded pipe 3%~6%.
- Q: What are the different methods of insulating steel pipes?
- There are several methods of insulating steel pipes, including using insulation wraps, foam insulation, fiberglass insulation, and pre-insulated pipe systems. Insulation wraps are typically made of materials like rubber or polyethylene and are wrapped around the pipe to provide thermal insulation. Foam insulation involves applying a layer of foam insulation directly onto the surface of the pipe. Fiberglass insulation is another common method, where fiberglass material is wrapped around the pipe to provide insulation. Pre-insulated pipe systems are complete pipe systems that come with built-in insulation and are ready to be installed. These methods help prevent heat loss or gain in the pipes, maintain temperature control, and prevent condensation.
1. Manufacturer Overview
Location | Tianjin, China |
Year Established | 2004 |
Annual Output Value | 250,000Tons |
Main Markets | Europe; South America; Americas;etc. |
Company Certifications | API 5L;API 5CT;ISO 9001:2008 GB/T 19001-2008;ISO 9001:2008 |
2. Manufacturer Certificates
a) Certification Name | |
Range | |
Reference | |
Validity Period |
3. Manufacturer Capability
a) Trade Capacity | |
Nearest Port | Tianjin |
Export Percentage | 50% - 60% |
No.of Employees in Trade Department | 1000-2000 People |
Language Spoken: | English; Chinese; Spanish |
b) Factory Information | |
Factory Size: | Above 70,000 square meters |
No. of Production Lines | Above 8 |
Contract Manufacturing | OEM Service Offered; Design Service Offered |
Product Price Range | Average |
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API ERW Line Pipes
- Loading Port:
- China Main Port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 50MT m.t.
- Supply Capability:
- based on order m.t./month
OKorder Service Pledge
OKorder Financial Service
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