seamless steel pipe for gas, water or oil industries

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 5000 m.t./month

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Specifications

1.ASTM A106/A53 GR.B
2.Outer diameter:10.3-194.4mm
3.Wall thickness:6.5-59mm
4.Cer:ISO9001:2008,API

Seamless steel pipe

(1) Standard: GB8163, ASTM A106/A53/API 5L

(2) Material: 10#, 20#, 16Mn, A106Gr.A/B/C,

(3)Specification: O.D: 21.3mm-711.2 mm
(4) W.T: 2.11mm-59.54mm

Technical Parameters of Seamless Steel Pipe

A53: Chemical components and mechanical property

Stan- dard	Trade mark	Chemical components	Mechanical property
C	Si	Mn	P,S	Cu	Ni	Mo	Cr	V	Tensile Strength	Yield Strength	Elongation
ASTM A53	A	≤0.25	/	≤0.92	≤0.05	≤0.06	≤0.40	≤0.15	≤0.40	≤0.08	≥330	≥205	≥29.5
B	≤0.30	/	≤1.2	≤0.05	≤0.06	≤0.40	≤0.15	≤0.40	≤0.08	≥415	≥240	≥29.5

Stan-

dard

Trade

mark

Chemical components

Mechanical property

P,S

Tensile

Strength

Yield

Strength

Elongation

ASTM

A53

≤0.25

≤0.92

≤0.05

≤0.06

≤0.40

≤0.15

≤0.40

≤0.08

≥330

≥205

≥29.5

≤0.30

≤1.2

≤0.05

≤0.06

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≥29.5

A106: Chemical components and mechanical property

Stan-dard	Trade mark	Chemical components	Mechanical property
C	Si	Mn	P,S	Cu	Ni	Mo	Cr	V	Tensile Strength	Yield Strength	Elongation
ASTM A106	B	≤0.30	≥0.10	0.29-1.06	≤0.035	≤0.40	≤0.40	≤0.15	≤0.40	≤0.08	≥415	≥240	≥30
C	≤0.35	≥0.10	0.29-1.06	≤0.035	≤0.40	≤0.40	≤0.15	≤0.40	≤0.08	≥485	≥275	≥30

Stan-dard

Trade mark

Chemical components

Mechanical property

P,S

Tensile Strength

Yield

Strength

Elongation

ASTM

A106

≤0.30

≥0.10

0.29-1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≥30

≤0.35

≥0.10

0.29-1.06

≤0.035

≤0.40

≤0.15

≤0.40

≤0.08

≥485

≥275

≥30

PSL 1: Chemical components and mechanical property

Class and Sort		Chemical components				Mechanical property
Class and Sort		C(Max)	Mn(Max)	P(Max)	S(Max)	Tensile Strength(Min)		Yield Strength(Min)
A25	CL I	0.21	0.60	0.030	0.030	45.000	310	25.000	172
A25	CL II	0.21	0.60	0.030	0.030	45.000	310	25.000	172
A		0.22	0.90	0.030	0.030	48.000	331	30.000	207
B		0.28	1.20	0.030	0.030	60.000	414	35.000	241
X42		0.28	1.30	0.030	0.030	60.000	414	42.000	290
X46		0.28	1.40	0.030	0.030	63.000	434	46.000	317
X52		0.28	1.40	0.030	0.030	66.000	455	52.000	359
X56		0.28	1.40	0.030	0.030	71.000	490	56.000	386
X60		0.28	1.40	0.030	0.030	75.000	517	60.000	414
X65		0.28	1.40	0.030	0.030	77.000	531	65.000	448
X70		0.28	1.40	0.030	0.030	82.000	565	70.000	483

Our catalog of Seamless steel pipe

item	material	standard	specification (OD*WT)mm	usage
alloy pipe	Cr5Mo. 15CrMo 13CrMo44 12Cr1MoV P22 T91,P91,P9, T9 Wb36	GB5310-95 GB9948-88 ASTMA335/A335M ASTMA213/213M DIN17175-79 JISG3467-88 JISG3458-88	16-824*2-100	The seamless steal pipes features resistance to high pressure, high/low temperature and corrosion and is used in the industries of petroleum, chemical engineering and. Electric power as well as boiler
High-pressure boiler pipe	20G,A106, ST 45	GB5310-95 ASTM A 106-99 DIN17175-79	14-630*2-80	Temperature-resistant seamless steel pipe far high-pressure boiler
Seamless pipes for petroleum	20, 12CrMo, 15CrMo	GB9948-88	10-530*1.5-36	Boiler pipes for refinery, heat-exchanging pipes, seamless steel pipes for pipeline
High-pressure Seamless pipes for fertilizer making equipment	20, 16Mn, Q345	GB6479-2000	18-530*3-40	Fertilizer making equipment and pipe line
Low and medium- pressure boiled pipe	10,20	GB3087-1999	10-530*2-40	Over-heat pipe for low and medium pressure boiler, boiling water pipe, locomotive smoke pipe(big and small)
Fluid pipe	20, Q345	GB/T8163-1999	8-630*1.0-40	Fluid feeding
Structural pipe	20, Q345 10, 20,35,45, 16Mn,Q345B	GB/T8162-1999	6-1020*1.5-100	For common structure
Line pipe	Gr.B	API	60-630*1.5-40	Carrying gas, water or oil in the industries of petroleum and natural gas
Hydraulic prop pipe	27SiMn	GB/T17396-1998	70-377*9-40	Hydraulic support and prop

Q:What is the difference between steel pipes and PEX pipes?: The main difference between steel pipes and PEX pipes lies in their material composition. Steel pipes are made of rigid metal and are typically used for industrial applications, while PEX pipes are made of flexible plastic and are commonly used for residential plumbing systems. Steel pipes offer durability and strength, but can be prone to corrosion. PEX pipes, on the other hand, are corrosion-resistant and easier to install due to their flexibility. Additionally, PEX pipes have better insulation properties and are less likely to burst in freezing temperatures compared to steel pipes.

Q:What are the common methods for inspecting the integrity of steel pipes?: Common methods for inspecting the integrity of steel pipes include visual inspection, ultrasonic testing, magnetic particle testing, radiographic testing, and pressure testing.

Q:What material is RHS in the steel tube?: RHS is a rectangular hollow section steel. The RHS structure represents a rectangular hollow section steel.

Q:What are the different types of steel pipe elbows?: There are several different types of steel pipe elbows that are commonly used in various industries and applications. These types include: 1. 90-degree elbows: These elbows have a sharp 90-degree bend and are commonly used when a change in direction is required to redirect the flow of fluid or gas. They are widely used in plumbing, construction, and industrial piping systems. 2. 45-degree elbows: Similar to 90-degree elbows, 45-degree elbows also provide a change in direction but with a smaller angle. They are often used in situations where a more gradual change in flow direction is required. 3. Long radius elbows: Long radius elbows have a larger radius of curvature compared to standard elbows. This design helps to reduce fluid friction and pressure drop, making them suitable for applications that require smoother flow, such as in high-flow systems or those involving viscous fluids. 4. Short radius elbows: In contrast to long radius elbows, short radius elbows have a smaller radius of curvature. They are generally used in tight spaces where a compact design is required, but they can cause higher pressure drops due to increased fluid friction. 5. Reducing elbows: These elbows are used when there is a need to connect pipes of different diameters. They have one end with a larger diameter and the other end with a smaller diameter, allowing for a smooth transition between two pipes of different sizes. 6. Mitered elbows: Mitered elbows are custom-made elbows that are fabricated by cutting and welding multiple sections of pipe at specific angles. They are often used in situations where standard elbows cannot accommodate the required angle or when a unique design is needed. Overall, the selection of the appropriate type of steel pipe elbow depends on factors such as the application, fluid flow requirements, space constraints, and compatibility with the piping system.

Q:What are the common factors affecting the lifespan of steel pipes?: Steel pipes can have their lifespan significantly reduced by various common factors. One primary factor is corrosion, which occurs when the steel is exposed to moisture, chemicals, and harsh environmental conditions, leading to rust and deterioration over time. Another determinant of the lifespan of steel pipes is the quality of materials used in their manufacturing. Higher-grade steel with better resistance to corrosion and degradation generally lasts longer compared to lower-quality materials. Proper installation and regular maintenance are crucial for ensuring the longevity of steel pipes. Inadequate support or improper alignment during installation can cause premature failure, while neglecting routine maintenance, such as cleaning and inspection, can speed up the degradation process. The operating conditions also play a role in the lifespan of steel pipes. Factors like temperature, pressure, and the type of fluid or gas being transported can affect the pipes' integrity. Extreme conditions, such as high temperatures or exposure to corrosive substances, can significantly reduce their lifespan. Excessive mechanical stress, including vibration, impact, or heavy loads, can weaken steel pipes over time. If not properly managed or accounted for during the design and installation process, this stress can lead to cracking, deformation, or even complete failure. The surrounding environment also influences the lifespan of steel pipes. Exposure to harsh weather conditions, such as extreme temperature variations or frequent freeze-thaw cycles, can expedite the deterioration process. Pollutants or aggressive substances in the surrounding soil or water can also contribute to the degradation of steel pipes. To ensure the durability and reliability of steel pipes, it is essential to consider and address factors such as corrosion, material quality, installation and maintenance practices, operating conditions, mechanical stress, and environmental factors. By doing so, the lifespan of steel pipes can be extended.

Q:How are steel pipes classified according to their use?: Steel pipes can be classified according to their use into various categories such as structural pipes, plumbing pipes, oil and gas pipes, and industrial pipes.

Q:Are steel pipes suitable for potable water applications?: Yes, steel pipes are suitable for potable water applications. Steel pipes are commonly used for transporting water in various industries and municipal water systems. They are known for their durability, strength, and resistance to corrosion, making them a reliable choice for potable water systems. Steel pipes also have the advantage of being able to withstand high pressure and temperature conditions, making them suitable for both hot and cold water applications. Additionally, steel pipes can be easily welded, ensuring leak-free connections. However, it is important to note that the quality of the steel used and proper maintenance are crucial factors in ensuring the safety and suitability of steel pipes for potable water applications. Regular inspection and maintenance should be done to prevent corrosion and ensure the integrity of the pipes.

Q:What is the difference between steel pipe and ductile iron pipe?: Steel pipe and ductile iron pipe are commonly utilized in various industries to transport fluids and gases. Nevertheless, there exist notable distinctions between the two materials. One primary difference lies in their composition. Steel pipe primarily consists of iron and carbon, with additional alloying elements to enhance strength and corrosion resistance. Conversely, ductile iron pipe is a form of cast iron that has undergone treatment to improve ductility and toughness. It contains higher levels of carbon and silicon, along with small amounts of other elements like magnesium and copper. Another difference is their strength and durability. Steel pipe is renowned for its high strength, enabling it to endure greater pressures and stresses compared to ductile iron pipe. It also exhibits superior resistance to impact and bending, making it suitable for applications requiring robustness. Ductile iron pipe, although not as strong as steel, still offers good strength and durability, particularly in scenarios involving external damage or heavy loads. Corrosion resistance is another crucial factor. Steel pipe typically exhibits greater resistance to corrosion due to the inclusion of alloying elements such as chromium and nickel. This renders it well-suited for applications prone to high corrosion risks, like pipelines carrying corrosive fluids. Ductile iron pipe, while possessing some corrosion resistance, may necessitate additional protective coatings to enhance its durability in corrosive environments. Installation and maintenance also differ between these two pipe types. Steel pipe is generally lighter and more manageable, facilitating easier installation. It also allows for welding, thereby providing greater construction flexibility. Ductile iron pipe, being a cast iron material, requires more specialized installation techniques such as mechanical joints or flanges. If mishandled, it is also more prone to cracking during installation. In terms of cost, steel pipe typically incurs higher expenses compared to ductile iron pipe. This stems from the higher cost of raw materials and the additional processing involved in steel pipe production. However, it is crucial to consider the overall lifecycle cost, as steel pipe's increased strength and corrosion resistance may result in lower maintenance and replacement expenses in the long run. In conclusion, while both steel pipe and ductile iron pipe have their respective advantages and applications, the choice between the two depends on factors such as strength requirements, corrosion resistance, installation methods, and budget considerations. Careful assessment of these factors will aid in determining the most suitable pipe material for a specific application.

Q:What are the factors to consider when designing a steel pipe system?: When designing a steel pipe system, several factors need to be considered to ensure its functionality, durability, and efficiency. These factors include: 1. Pressure and temperature requirements: Determining the maximum pressure and temperature that the steel pipe system will be exposed to is crucial. This information is essential for selecting the appropriate pipe material, thickness, and jointing method to withstand the system's operating conditions. 2. Pipe material: Choosing the right material for the steel pipe system is important. Factors such as corrosion resistance, strength, and cost should be considered. Common materials for steel pipes include carbon steel, stainless steel, and alloy steel. 3. Pipe size and thickness: Calculating the adequate pipe size and wall thickness is essential to ensure the required flow rate and pressure drop within the system. The pipe size affects the system's efficiency and must be chosen based on the anticipated flow rates and pressure losses. 4. Support and anchoring: Proper support and anchoring are critical to prevent sagging, movement, and stress on the steel pipe system. The design should consider the weight of the pipes, the fluid being transported, and any external forces that may act on the system. 5. Expansion and contraction: Steel pipes expand and contract with temperature variations, causing stress on the system. Expansion joints or loops should be incorporated to allow for thermal growth and contraction, preventing damage and distortion. 6. Fluid compatibility: Understanding the properties of the fluid being transported, such as corrosiveness, viscosity, and potential for sedimentation or scaling, is important in selecting the appropriate pipe material and protective coatings or linings. 7. Accessibility and maintenance: Consideration should be given to the accessibility of the system for installation, inspection, and maintenance purposes. Proper access points, valves, and fittings should be included in the design to allow for easy maintenance and repairs. 8. Environmental factors: The steel pipe system may be exposed to various environmental conditions, such as extreme temperatures, humidity, or corrosive substances. These factors should be considered when selecting the pipe material, protective coatings, and insulation. 9. Regulatory compliance: Compliance with applicable industry standards, codes, and regulations is essential. The design should adhere to safety guidelines and applicable building codes to ensure the pipe system's integrity and longevity. 10. Cost consideration: Finally, the overall cost of the steel pipe system, including material, installation, maintenance, and energy consumption, should be taken into account. Balancing cost-effectiveness with performance requirements is crucial in achieving an efficient and economical design. By considering these factors, engineers and designers can create a steel pipe system that is suitable for its intended purpose, ensuring its longevity, reliability, and safety.

Q:What does seamless steel tube mean? What are the main uses? What are the classifications?: The production process of seamless steel tube in general can be divided into two kinds of hot rolling and cold drawing, cold-rolled seamless steel pipe production process than hot-rolled billet to complex, first to three roller rolling and extrusion to sizing test, if the tube through the cutting machine cutting surface without crack growth response after cutting blank about one meter. Then enter the annealing process, annealing and pickling to use acid pickling liquid, should pay attention to the surface if there are a lot of bubbling, if there are a large number of bubbling pipe shows that the quality is not up to the standard. The appearance of cold rolling seamless steel tube shorter than hot-rolled seamless steel pipe, cold rolled seamless steel pipe wall thickness is generally higher than hot-rolled seamless steel pipe to be small, but the surface looks better than thick wall seamless steel pipe is more bright, rough surface is not too much, not too much burr diameter.

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