Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B high quality

Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B high quality

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 10 m.t.

Supply Capability:: 5000 m.t./month

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1. Commodity Name: Seamless steel pipe

2. Standard: API,GB,ASTM,ASME,DIN

3. Quality grade: 10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.

4. Dimension:

OD: 1/2"-24"

WT: 2.5-80mm, SCH10~SCH40~XXL

length: 5.8m,6m,8m,9m,12m

5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn

6. application

carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

7. Payment Terms: L/C D/A D/P T/T

8.packing and shipment

Packaged in bundles,as per customers' requirements, it can also bepackagesd as beveled ends, typed marking, black painting, plastic caps protection,woven bags packing

For 20" container the max length is 5.8m; For 40" container the max length is 12m. other options are available based on customer requests. Please discuss when placing orders.

9. Surface: painted with varnish;

10. Plastic caps at ends.

11. Tolerance: OD +1%/-1%

WT +12.5%/-10%

12. Chemical composition:

Models of Steel Pipes	Chemical Component
Steel 20 (ASTM A106B)	C	Si	Mn	P	S	Cu	Ni	Cr
Steel 20 (ASTM A106B)	0.17~0.24	0.17~0.37	0.35~0.65	0.035max	0.035max	0.25max	0.25max	0.25max
Steel45 (ASTM 1045)	0.42~0.50	0.17~0.37	0.50~0.80	0.035max	0.035max	0.25max	0.25max	0.25max
16Mn(Q345B)	0.12~0.20	0.20~0.55	1.20~1.60	0.035max	0.035max	0.25max	0.25max	0.25max
45Mn2 ( ASTM1345)	0.42~0.49	0.17~0.37	1.40~1.80	0.035max	0.035max	0.3max	0.3max	0.30max

Q: Are steel pipes resistant to corrosion?: Yes, steel pipes are generally resistant to corrosion due to their composition, which includes a protective layer of zinc or other anti-corrosion coatings. However, factors such as exposure to harsh environments or chemicals can affect the level of corrosion resistance.

Q: How are steel pipes graded?: The quality and suitability of steel pipes are determined by grading them based on several factors. The grading system typically takes into account parameters such as the chemical composition, mechanical properties, manufacturing method, and testing standards. 1. When it comes to the chemical composition, steel pipes are graded according to the elements present in their composition. This includes the quantities of carbon, manganese, phosphorus, sulfur, and other alloying elements. The pipe's strength, corrosion resistance, and other properties are greatly influenced by its chemical composition. 2. The mechanical properties of steel pipes play a crucial role in determining their strength, flexibility, and resistance to pressure and temperature. These properties encompass tensile strength, yield strength, elongation, hardness, and impact toughness. Pipes with higher mechanical properties are generally given higher grades. 3. The manufacturing method used for steel pipes can vary, with options such as seamless, welded, or ERW (Electric Resistance Welding). The manufacturing method has an impact on the pipe's integrity, dimensional accuracy, and overall quality. For example, seamless pipes are considered to be of higher quality due to their uniformity and lack of weld seams. 4. Steel pipes are graded based on their adherence to specific testing standards. These standards ensure that the pipes meet the required quality criteria and are suitable for their intended applications. Common testing standards include ASTM (American Society for Testing and Materials), API (American Petroleum Institute), and EN (European Norms). Taking these factors into consideration, steel pipes are often assigned alphanumeric codes or specifications for grading. For instance, pipes used in the oil and gas industry may be graded as API 5L (American Petroleum Institute), while pipes used for structural purposes may be graded as ASTM A500 (American Society for Testing and Materials). In conclusion, the grading of steel pipes is determined by their chemical composition, mechanical properties, manufacturing method, and adherence to testing standards. These grades assist customers and manufacturers in selecting the appropriate pipes for specific applications, ensuring safety, durability, and efficiency across various industries.

Q: Can steel pipes be used for steam distribution?: Yes, steel pipes can be used for steam distribution. Steel pipes are commonly used for conveying steam due to their high heat resistance and durability. They can withstand the high temperatures and pressures associated with steam distribution, making them a suitable choice for this application.

Q: What is the maximum length of steel pipes available in the market?: The maximum length of steel pipes available in the market can vary depending on the specific supplier and industry requirements. However, standard lengths typically range from 20 to 40 feet.

Q: What are the common standards for coating and lining of steel pipes?: The common standards for coating and lining of steel pipes are outlined by various organizations and regulatory bodies to ensure the durability, corrosion resistance, and overall quality of the pipes. Some of the widely recognized and used standards include: 1. American Society for Testing and Materials (ASTM): ASTM has developed numerous standards for coating and lining of steel pipes, such as ASTM A775/A775M for epoxy-coated reinforcing steel, ASTM A1064/A1064M for metallic-coated steel wire, and ASTM A1057/A1057M for fusion-bonded epoxy-coated steel reinforcement. 2. American Water Works Association (AWWA): AWWA has established several standards for coating and lining of steel pipes used in the water industry. Examples include AWWA C210 for liquid epoxy coating systems for the interior and exterior of steel water pipelines, and AWWA C213 for fusion-bonded epoxy coating for the interior and exterior of steel water pipelines. 3. National Association of Corrosion Engineers (NACE): NACE International develops standards and recommended practices for the corrosion control of steel pipes. NACE SP0169 provides guidelines for selection and application of coatings for underground or submerged steel pipelines, while NACE SP0198 offers recommendations for external coatings of steel pipelines. 4. ISO Standards: The International Organization for Standardization (ISO) has developed various standards related to coating and lining of steel pipes. ISO 21809-1 specifies the requirements for external coatings applied to buried or submerged pipelines, while ISO 21809-2 focuses on the internal coating and lining of such pipelines. These standards cover different aspects of the coating and lining process, including surface preparation, application methods, minimum coating thickness, adhesion, and quality control. Adhering to these standards ensures that steel pipes are properly protected against corrosion, abrasion, and other forms of deterioration, leading to longer service life and enhanced performance in various industries such as oil and gas, water supply, and infrastructure.

Q: Can steel pipes be used for fire protection systems?: Yes, steel pipes can be used for fire protection systems. Steel pipes have high heat resistance and can withstand extreme temperatures, making them suitable for carrying water, foam, or other fire suppressants in fire protection systems. Additionally, steel pipes are durable, strong, and have a long lifespan, making them a reliable choice for fire safety applications.

Q: What are the different standards and specifications for steel pipes?: There are several standards and specifications for steel pipes, including ASTM A53, ASTM A106, ASTM A333, and API 5L. These standards outline the requirements for the manufacturing, testing, and usage of steel pipes in various industries such as construction, oil and gas, and plumbing. The standards cover aspects like dimensions, mechanical properties, chemical composition, and tolerance levels to ensure the quality and reliability of the steel pipes.

Q: How are steel pipes protected against ultraviolet radiation?: Steel pipes are typically protected against ultraviolet radiation through the application of specialized coatings or paints that contain UV inhibitors. These coatings create a barrier between the steel surface and the harmful UV rays, preventing the degradation and discoloration of the pipes. Additionally, some steel pipes may be wrapped with UV-resistant tape or sleeves for added protection against prolonged exposure to sunlight.

Q: What are the different types of steel pipe nipples?: There are various types of steel pipe nipples, including standard, close, barrel, hexagonal, and welding nipple. Each type serves a specific purpose and has unique characteristics.

Q: Are steel pipes resistant to impact or external forces?: Steel pipes are renowned for their resistance to impact and external forces. Their high strength and durability render them perfect for a wide range of applications, notably in the realm of piping. These pipes possess the remarkable ability to endure external forces, encompassing impact, pressure, and vibrations. Consequently, industries necessitating steadfast and robust piping systems, like oil and gas, construction, and infrastructure, frequently opt for steel pipes. Furthermore, when confronted with extreme conditions, steel pipes are less prone to cracking or breaking in comparison to other materials. Nonetheless, the extent of resistance to impact and external forces may hinge upon the specific grade and thickness of the steel employed in the pipes.

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