• API ERW Line Pipes System 1
  • API ERW Line Pipes System 2
  • API ERW Line Pipes System 3
API ERW Line Pipes

API ERW Line Pipes

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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

 

API ERW Line Pipes Raw Materials

 

Unfold Machine

 

API ERW Line Pipes unfold

 

Production Line

ERW Steel Pipe Production Line

ERW UT Offline Weld Flaw Detection Machine

 

API ERW Line Pipes

 

 

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.
All these steel pipes are suitable for the industries of oil, natural gas,ship building,chemical, environmental protection,boiler, water conservancy, electrical industry,steel structure, building and other related fields.Our company following the principle that ‘customer supemacy, business integrity’We will do our best to supply best products and service to our customers. We expect mutual benefit.

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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