Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B 20# high quality

Seamless steel pipe ASTM A106/API 5L/ASTM A53 GR.B 20# 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: What is the theoretical weight per square meter of the steel pipe diameter of the outer frame and the thickness of the tube wall 3mm 48mm?: Formula: outside diameter - wall thickness * wall thickness *0.02466=, weight per meter! : 48-3*3*0.02466=3.3291

Q: What are the different types of steel pipe couplings?: In the market, there exists a variety of steel pipe couplings to cater to specific applications and needs. The following are some of the commonly used types: 1. Threaded Coupling: This coupling is equipped with threaded ends for easy installation and removal. It is suitable for low-pressure applications and can be used with both threaded and non-threaded pipes. 2. Compression Coupling: Designed to create a secure and leak-proof connection between two pipes, compression couplings consist of two pieces that are tightened together using compression nuts or sleeves, thus forming a tight seal. 3. Slip-On Coupling: A slip-on coupling is a simple and convenient option that can be easily installed by sliding it onto the pipe ends and then securing it in place through welding or bolting. It is commonly used to join pipes with plain ends and is suitable for both high and low-pressure applications. 4. Grooved Coupling: Grooved couplings possess a groove on both pipe ends, allowing them to be connected by using a rubber gasket and coupling housing. This type of coupling ensures a reliable and flexible connection that can accommodate minor misalignments and vibrations. 5. Flanged Coupling: Consisting of two flanges bolted together with a gasket in between, flanged couplings are widely used in high-pressure applications due to their strength and reliability. 6. Welded Coupling: Welded couplings are permanently joined to the pipe ends through a welding process. This type of coupling guarantees a strong and durable connection that is resistant to leaks and vibrations. These examples represent only a fraction of the steel pipe couplings available. The choice of coupling depends on factors such as the pipe type, application requirements, and the desired level of strength and flexibility. It is crucial to select the appropriate coupling to ensure a secure and dependable connection between pipes.

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: Are steel pipes suitable for underground gas lines?: Yes, steel pipes are suitable for underground gas lines. They are commonly used due to their strength, durability, and resistance to corrosion, making them a reliable choice for transporting and distributing gas underground.

Q: Can steel pipes be used for underground steam pipelines?: Yes, steel pipes can be used for underground steam pipelines. Steel pipes are commonly used for various types of pipelines, including steam pipelines, due to their strong and durable nature. Steel pipes have the ability to withstand high temperatures and pressures, making them suitable for transporting steam underground. Additionally, steel pipes have excellent corrosion resistance properties, which is important for underground pipelines as they are exposed to moisture and potentially corrosive elements in the soil. Overall, steel pipes are a reliable and commonly used choice for underground steam pipelines.

Q: What is the role of steel pipes in the chemical manufacturing industry?: Steel pipes play a crucial role in the chemical manufacturing industry as they are widely used for transporting various chemicals, gases, and liquids. These pipes are highly durable, resistant to corrosion, and can withstand high temperatures and pressures, making them ideal for handling hazardous substances. Additionally, steel pipes ensure the integrity and safety of the chemical manufacturing process by preventing leaks, contamination, and loss of product.

Q: What are the different types of coatings used for internal lining of steel pipes?: There are several types of coatings commonly used for the internal lining of steel pipes, including epoxy coatings, polyurethane coatings, cement mortar linings, and polyethylene linings. Each type of coating offers different benefits and is chosen based on factors such as the intended application, corrosion resistance requirements, and cost-effectiveness.

Q: What is a flange and how is it used in steel pipes?: A flange is a flat, circular fitting that is attached to the end of a steel pipe. It is used to connect two pipes or fittings together, allowing for easy assembly and disassembly of the pipeline system. The flange provides a secure and leak-proof connection by bolting the flange to the adjacent flanges or equipment. It also allows for the attachment of valves, pumps, or other components to the pipeline. Overall, flanges play a crucial role in ensuring the integrity and functionality of steel pipes in various industrial applications.

Q: What is the typical diameter range of steel pipes?: The typical diameter range of steel pipes can vary widely, but it commonly falls between 0.5 inches to 48 inches.

Q: What is the cost of steel pipes compared to other piping materials?: The cost of steel pipes can vary based on factors like size, grade, and specifications, as well as market conditions and location. Generally, steel pipes are more expensive than materials like PVC or HDPE. However, when compared to materials like copper or stainless steel, steel pipes can often be more cost-effective. Steel pipes are known for their durability, strength, and resistance to high pressures and temperatures, making them suitable for various applications such as oil and gas pipelines, plumbing systems, and structural supports. Their longevity and reliability can offset the initial higher cost, as they require less maintenance and have a longer lifespan than other materials. Moreover, steel pipes are readily available in different sizes and grades, making them versatile and adaptable to different project requirements. This availability and versatility contribute to their cost-effectiveness, as they can be easily sourced and customized to specific needs. It is important to consider that prices for steel pipes can fluctuate due to market conditions and factors like raw material costs, transportation expenses, and labor charges. Therefore, it is advisable to consult with suppliers or industry experts for accurate pricing information based on specific project specifications and market conditions.

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