boiler tube seamless carbon steel pipe for high pressure

boiler tube seamless carbon steel pipe for high pressure

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 60000 m.t./month

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Specifications

1. Min Order : 20 tons
2.OD: 20mm --508mm
3. WT: 3mm -- 60mm
4.Certification: ISO & API

seamless steel pipes for high pressure boiler tube

1) Standard: API Standard:ASTM A106.ASTM A53,ASTM A135,ASTM A179,ASTM A214,ASTM A192,ASTM A226,ASTM A315,ASTM A178,ASTM A210,ASTM A333,ASTM A355,ASTM A369,ASTM A334 ASTM/ASME A312/SA312, ASTM/ASME A213/SA213, ASTM A269,ASTM 511,API5L,API5CT, GOST 9940,GOST 9941,JIS G 3459, JIS GS3463, GS3467, JIS G3448, DIN EN 10216-2006(DIN 17458) , DIN EN 10297-2006(DIN 17456) etc.

2) Steel Grade: ASTM A106 GRB,A53 GRB. API 5L GRB,API 5 CT N80,K55,A335 P11.P91,DIN ST52,ST44,ST35.8,ST37,ST42,ST45

3)Outside Diameter:1/2"-20" Or 21.3-508mm

4) Wall Thickness: 3-40mm

5) Application: The products are widely used in fertilizer, petroleum, central-station, boiler, power station, shipping military, chemical industry, environment protection, traffic, metallurgy and mine, printing and dyeing, food industry, medical equipment, and so on.

Production Equipment :
30 sets of Cold-drawn Machinery (Model: 3 ton to 500 ton)
Cold-rolled Machinery: Model LD-30, LD-60, LG-90H (L), LG-159H (L)
Automatic Roller Solution & Annealing Heat Treatment Equipment
18-meter-long Pickling Sin

QUALITY ASSURANCE:

1) Strictly acc. ASTM,DIN,JIS,EN,GOST etc

2) Sample: We are accept your sample requirement

3) Test: Eddy current / hydrostatic/ Ultrasonic/ Intergranular Corrosion or according to customers' request

3) Certificate:API, CE ,ISO9001.2000.MTC etc

4) Inspection: BV,SGS,others is avaliable.

High Quality Package :

1) In bundle with strip;

2) First packing by plastic bag then strip; Details packing please see the picture in the detial description.

3) In bulk

4) Client' requirements

5) Delivery: 1) Container: 25 tons/container for pipe with usual outer diameter. For 20" container the max length is 5.8m; For 40" container the max length is 11.8m.

2) Bulk carrier: It is no requirements to the length of the pipe. But its booking space time is long.

Our Advantages:

1) Fast Delivery: around 10days below 50Metric Tons after sight of Irrevocable L/C or Deposit;(lot of high quality steel pipe in stock)

2) Quality Assured: Strictly acc. To International standard ASTM & BS & EN & JIS, with System ISO certification

3) Good Service: supplied professional technical guide free of charge at anytime;

4) Reasonable Price: to be better support your business;

Q:What is the difference between steel pipes and ductile iron pipes?: Steel pipes and ductile iron pipes are both commonly used for plumbing and industrial applications, but there are notable differences between them. The main difference lies in their composition and mechanical properties. Steel pipes are made primarily from iron and carbon, with small amounts of other elements added for strength and corrosion resistance. On the other hand, ductile iron pipes contain a higher percentage of carbon and small amounts of other elements like silicon and manganese, which give them improved ductility and resistance to cracking. Consequently, steel pipes are typically stronger and more rigid, suitable for high-pressure applications, while ductile iron pipes offer better flexibility and impact resistance, making them ideal for underground installations and areas prone to ground movement. Additionally, steel pipes are usually more expensive than ductile iron pipes due to their higher strength and corrosion resistance.

Q:What is the difference between ERW (Electric Resistance Welded) and LSAW (Longitudinal Submerged Arc Welded) steel pipes?: ERW steel pipes are manufactured using the process of high-frequency electrical current passing through the metal, creating heat that fuses the edges of the steel together. On the other hand, LSAW steel pipes are produced by submerging the steel plate in a welding zone, where an arc is struck and the edges of the plate are melted and fused together. In terms of the welding technique, ERW pipes use electrical resistance while LSAW pipes use submerged arc welding. Additionally, LSAW pipes are typically used for larger diameter and thicker wall thickness applications, while ERW pipes are commonly used for smaller diameter and thinner walls.

Q:How does galvanization protect steel pipes from corrosion?: Galvanization protects steel pipes from corrosion by forming a protective zinc coating on the surface of the pipes. This zinc coating acts as a barrier between the steel and the surrounding environment, preventing moisture and corrosive elements from reaching the steel. Additionally, if the zinc coating is damaged, it sacrificially corrodes before the steel, further protecting the pipes from rust and corrosion.

Q:What kind of argon arc welding wire is used for 16Mn steel pipe?: 16Mn steel weldability is very good, general use TIG with J50 welding wire, hand arc welding with J506, J507 and other welding rod

Q:How do you calculate the pressure drop in a steel pipe?: To calculate the pressure drop in a steel pipe, you need to consider factors such as the pipe diameter, length, flow rate, and fluid properties. The pressure drop can be determined using various formulas, such as the Darcy-Weisbach equation or the Hazen-Williams equation, depending on the specific conditions and assumptions made. These equations take into account factors like pipe roughness, viscosity, and Reynolds number to determine the pressure drop across the pipe.

Q:How are steel pipes used in the chemical industry?: Steel pipes are extensively used in the chemical industry for various applications, including transportation of chemicals, gases, and liquids. They are highly durable, corrosion-resistant, and can withstand high pressure and temperature conditions. Steel pipes are used in chemical plants for the transfer of raw materials, intermediate products, and final products within the production process. They are also employed for the distribution of utilities such as water, steam, and compressed air. Additionally, steel pipes are utilized for the construction of storage tanks, reactors, and other equipment in the chemical industry due to their strength and reliability.

Q:Can steel pipes be used for conveying gases?: Yes, steel pipes can be used for conveying gases. Steel pipes are commonly used in various industries, including oil and gas, petrochemical, and construction, for transporting various types of gases such as natural gas, air, and hydrogen. Steel pipes offer several advantages for gas transportation. They are strong and durable, able to withstand high pressure and temperature conditions. Steel pipes also have excellent resistance to corrosion and can effectively prevent gas leakage, ensuring the safety and reliability of the gas transportation system. Additionally, steel pipes have a smooth internal surface, which minimizes the frictional resistance and allows for efficient gas flow. Overall, steel pipes are a reliable and widely-used option for conveying gases in various applications.

Q:What is the fire rating of steel pipes?: Several factors determine the fire rating of steel pipes. Steel possesses inherent fire resistance due to its high melting point and low thermal conductivity. However, the fire rating of steel pipes can be further improved by employing fire-resistant coatings or insulation materials. These additional measures can offer different levels of fire protection, typically quantified by how long the pipes can retain their structural integrity during a fire situation. The precise fire rating of steel pipes may differ depending on the thickness and type of coating or insulation employed. To ascertain the appropriate fire rating requirements for specific applications, it is crucial to refer to industry standards, such as those established by organizations like the National Fire Protection Association (NFPA), or consult with fire safety professionals.

Q:Can steel pipes be used for the construction of tunnels?: Yes, steel pipes can be used for the construction of tunnels. Steel pipes are often used as structural elements for tunnel construction due to their strength, durability, and resistance to corrosion. They can be used for various purposes such as tunnel lining, ventilation systems, and water drainage. Steel pipes offer the advantage of being able to withstand high loads and pressures, making them suitable for tunnel construction in different geological conditions.

Q:What does "spiral welded steel pipe" DN325*10 mean?: Spiral welded steel pipe with nominal diameter of 325mm and wall thickness of 10mm

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