42'' CARBON STEEL LSAW WELDED PIPE API/ASTM/JIS/DIN

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t

Supply Capability:: 300 m.t/month

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Packaging & Delivery

Packaging Detail:	standard export packing or as customer's requirement
Delivery Detail:	within 10 - 30 days

Specifications

Spiral Welded Steel Pipes and Tubes
1.Material:Q195-Q235
2.Length:1-12m
3.WT:1.0-14mm
4.O.D.:20-273mm

Product Description:

1.Material : Q235,Q345,L245,L290,L360,L415,L450,L485,GrB,X42,46,X52,X56,X60,X65,X70,X80,X100

2,Standard: SY/T5037-2000,GB/T9711-2011,API Spec 5L PSL1/PSL2,ASTM A252\A53,ISO3183,DIN17172,EN10217,JIS G3457,AWWA C200,ASTM A139,ASTM A671,ASTM A672

3.Wall thickness: 3.0mm-30mm

4.Outer diameter: φ168mm-3020mm

5,Length: 5m-12m or as your requirement

6,Corrosion protection standard: DIN30670,DIN30671, AWWAC210, AWWA C203, SY/T0413-2002,SY/T0414-2002

7,Application: Oil, gas, natural gas, water pipe, thermal electricity pipe, steel structure engineering, etc

Q195-q345 Material Steel Pipe's Materials

Elements Material	Chemical Compsition%					Mechanical Property
	C%	Mn%	S%	P%	Si%	Yield Point (Mpa)	Tensile Strength(Mpa)	Elongation (%)
Q195	0.06-0.12	0.25-0.50	<0.050< span="">	<0.045< span="">	<0.030< span="">	>195	315-430	32-33
Q215	0.09-0.15	0.25-0.55	<0.05< span="">	<0.045< span="">	<0.030< span="">	>215	335-450	26-31
Q235	0.12-0.20	0.30-0.70	<0.045< span="">	<0.045< span="">	<0.030< span="">	>235	375-500	24-26
Q345	<0.20< span="">	1.0-1.6	<0.040< span="">	<0.040< span="">	<0.55< span="">	>345	470-630	21-22

Packaging & Delivery

Packaging Detail:	Normal exporting packing,in container or bulk vessel or as per clients' request
Delivery Detail:	2 months after confimed contract

Specifications

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe
Grade: X42, X46, X50, X52, X60, B, C
OD: 1.5"-28"
WT: SCH10-SCH160
Brand:TPCO

Large Diameter API 5L X70 PSL2 LSAW Steel Pipe

Specifications:

u Standard: API 5L

u Grade: B, C, X42, X46, X50, X52, X56, X60, X65, X70, X80

u OD: 1.5"-28"

u WT: SCH10-SCH160

u Length: 5-12m

u Ends Finish: plain end, bevel end, grooved end

u Surface Treatment: bare, black varnished, oiled finish, red color, anti-corrosion, 3PE, FBE or epoxy coating

u Technique: hot rolled or cold drawn

u Application: api 5l steel pipe for conveying oil, water, gas

u Invoicing: based on theoretical weight or actual weight

u Payment Terms: L/C at sight, T/T or Western Union

u Trade Terms: FOB, CFR, CIF

u Certification: ABS manufacturing assessment, ABS design assessment, API 5CT, API 5L, DNV manufacturer certificate, ISO9001 quality management system certificate, ISO14001 environment management system certificate, GB/T28001 occupational health and safety management system certificate, A1 class manufacturing license of special equipment certificate, CCS, GL, LR, SGS, TüV, PDE

Q:What are the different methods of insulating steel pipes?: There exists a variety of methods for insulating steel pipes, depending on the specific needs and requirements of the application. Some commonly utilized methods include: 1. Insulation wraps: By enveloping the steel pipes with insulating materials such as fiberglass, mineral wool, or foam insulation and securing them tightly with adhesive or tape, insulation wraps offer a cost-effective and straightforward installation option favored by many. 2. Insulation coatings: Applying a layer of insulating material directly onto the surface of the steel pipe, insulation coatings made from materials like epoxy, polyurethane, or polyethylene protect against corrosion and temperature fluctuations, making them ideal for harsh environments. 3. Insulation jackets: Utilizing pre-fabricated insulation jackets designed to fit over the steel pipes, this method combines insulation materials with a weatherproof outer layer. Insulation jackets are commonly employed for outdoor or exposed pipelines, providing excellent insulation and protection against external elements. 4. Insulation foam: Injecting foam insulation into the space between the steel pipe and an outer casing, the foam expands and hardens to create a sealed and well-insulated layer. Apart from preventing heat loss or gain, foam insulation also offers remarkable soundproofing properties. 5. Insulation tapes: Specially designed insulation tapes made from PVC or rubber, possessing good insulating properties, are wrapped around smaller pipes or joints. This flexible and easy-to-apply solution is commonly employed. When selecting the appropriate method to insulate steel pipes, it is crucial to consider factors such as operating temperature, environmental conditions, and specific application requirements. Seeking advice from a professional or insulation specialist can assist in determining the most suitable insulation method for individual needs.

Q:How are steel pipes used in construction?: Steel pipes are commonly used in construction for various purposes such as structural support, plumbing, and transportation of fluids and gases. They are used in building frameworks, bridges, and underground infrastructure, providing strength, durability, and flexibility. Steel pipes are often employed in plumbing systems for water supply and drainage. Additionally, they serve as conduits for conveying gas, oil, and other substances. Their versatility and strength make steel pipes an essential component in modern construction projects.

Q:Can steel pipes be used for underground gas distribution?: Indeed, underground gas distribution can make use of steel pipes. Within the gas industry, steel pipes are widely employed due to their exceptional strength, durability, and resistance to corrosion. These pipes possess the capacity to endure the pressure and stress inherent in gas distribution systems. Moreover, steel pipes have demonstrated their reliability and safety as a means of transporting natural gas below ground. Nevertheless, it is crucial to ensure that these steel pipes are adequately coated and shielded against corrosion in order to preserve their integrity and prolong their lifespan. Consistent inspections and maintenance procedures are also imperative to detect and rectify any potential problems that may arise.

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 commonly used in tunnel construction for various purposes such as drainage, ventilation, and utility installations. They are strong, durable, and can withstand high pressures and loads, making them suitable for tunnel applications. Additionally, steel pipes can be easily fabricated, installed, and maintained, making them a popular choice in tunnel construction projects.

Q:How long is the seamless tube?: Seamless steel tube specification: 8-1240 * 1-200mm

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 various factors such as the type of steel, manufacturing capabilities, transportation limitations, and customer requirements. However, in general, steel pipes can be manufactured in lengths of up to 12 meters (40 feet) or even longer. It is important to note that longer lengths may be more challenging to handle and transport, and may require specialized equipment or techniques. Ultimately, the maximum length of steel pipes available in the market will be determined by the specific needs and capabilities of the industry and customers.

Q:Can steel pipes be used in marine environments?: Yes, steel pipes can be used in marine environments. Steel is a commonly used material in marine structures due to its strength, durability, and resistance to corrosion. However, it is important to use the appropriate grade of steel and apply protective coatings to enhance its resistance to seawater corrosion. Regular maintenance and inspections are also necessary to ensure the longevity and performance of steel pipes in marine environments.

Q:How do you calculate the pipe pressure drop coefficient for steel pipes?: To determine the pipe pressure drop coefficient for steel pipes, one can utilize the Darcy-Weisbach equation. This equation establishes a relationship between the pressure drop within a pipe and various factors, including the flow rate, pipe diameter, pipe length, and the properties of the fluid being conveyed. The pressure drop coefficient, also known as the friction factor or the Darcy-Weisbach friction factor, is represented by the symbol f and is dimensionless. It denotes the resistance to flow within the pipe. The value of f is contingent upon the flow regime, which can either be laminar or turbulent. In the case of laminar flow, occurring at low flow rates or with viscous fluids, the pressure drop coefficient can be determined through employment of the Hagen-Poiseuille equation. This equation relates the pressure drop to the fluid viscosity, pipe length, pipe diameter, and flow rate. However, for turbulent flow, arising at higher flow rates, the calculation of the pressure drop coefficient becomes more intricate. It is influenced by the roughness of the pipe wall, which impacts flow resistance. Typically, roughness is quantified using the relative roughness, defined as the ratio of the pipe wall roughness to the pipe diameter. To compute the pressure drop coefficient for turbulent flow in steel pipes, empirical correlations or Moody's diagram can be utilized. Moody's diagram provides a graphical depiction of the friction factor as a function of the Reynolds number and relative roughness. The Reynolds number characterizes the flow regime and is determined using fluid properties, flow rate, and pipe dimensions. By identifying the intersection of the Reynolds number and relative roughness on Moody's diagram, one can ascertain the corresponding pressure drop coefficient. It is crucial to note that the pressure drop coefficient for steel pipes may vary depending on specific pipe dimensions, surface roughness, and fluid properties. Consequently, it is advisable to refer to relevant standards or engineering sources for precise and current values of the pressure drop coefficient for steel pipes in a particular application.

Q:What is the tensile strength of steel pipes?: The tensile strength of steel pipes can vary depending on the grade and type of steel used. However, on average, steel pipes typically have a tensile strength ranging from 300 to 700 megapascals (MPa).

Q:Welded and seamless steel pipe how to distinguish?: Different processing technology:Seamless tubes are made of quality carbon steel or alloy steel. Processing technology of seamless pipe hot rolling and cold drawing is divided into two ways, and the tube is generally based on welded.

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