Carbon Steel Seamless Pipe with FBE coating

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1.Specification:

Iterm		Seamless steel pipe/tube
Size		OD:21.3-610mm WT:2.24-30.96mm
Length		5.8-12m
Application		Usage for fluid transportation ,structure, and so on
Surface Treatment		3PE/2PE,3PP/2PP,FBE,EPOXY COATING
Packing		Hexagon bundle with waterproof packing or as client's requirement
API	Standard	API 5L
	material	Gr.B, X42,X46,X52,X56,X60,X65,X70
ASTM	Standard	ASTM A106, ASTM A53
	material	A106(A B), A53(AB)
DIN	Standard	DIN1626,DIN17175,DIN1629
	material	St37,st42,st35.8,st45-8,st45-4
JIS	Standard	JISG 3454,JISG3456,JISG3461,JISG3455
	material	STPG42,STB42,STS 42
GB	Standard	GB 8163/8162
	material	20#,10#,45#,Q345,20Cr,40Cr,12CrMov
Payment terms		TT or L/C
Delivery time		Within 30 days after receive the prepayment by TT

ANTICORROSION STEEL PIPE SPECIFICATION :

1. 3PE COATING

STANDARD: GB/T23257-2009, SY/T0413-2002, DIN30670-91,CAN/CSA-Z245.21-M92

SIZE: OD :89mm-1820mm WT: 6mm-20mm

2. EPOXY COATING

STANDARD:SY/T0447-96 GB50268-2008

3. FEB COATING

STANDARD: SY/T0315-97,SY/T0315-2005,CAN/CSA-Z245.20-M98,DIN30671,Q/CNPC38-2002

SIZE: OD: 89mm-1820mm WT: 6mm-20mm

4. CEMENT MORTAR COATING

STANDARD: CECS10:89, GB50268-2008

SIZE: OD :159mm-2220mm

Q: How are steel pipes tested for mechanical strength?: Steel pipes are typically tested for mechanical strength through various destructive and non-destructive testing methods. Destructive tests involve subjecting the pipes to tension, compression, or bending forces until failure occurs, allowing the measurement of their ultimate tensile strength, yield strength, and elongation. Non-destructive tests, such as ultrasonic testing, magnetic particle inspection, or radiographic examination, are also conducted to detect any internal or surface defects that may affect the mechanical strength of the pipes. These tests ensure that steel pipes meet the required standards and specifications in terms of their mechanical strength.

Q: Can steel pipes be used for marine applications?: Yes, steel pipes can be used for marine applications. Steel pipes have high strength and durability, making them suitable for various marine environments and applications such as offshore drilling, shipbuilding, and underwater pipelines. The corrosion-resistant properties of steel pipes can be further enhanced by applying protective coatings or using corrosion-resistant alloys, ensuring their long-term performance in marine conditions.

Q: How do you determine the weight per foot of a steel pipe?: To ascertain the weight per foot of a steel pipe, there are two primary factors to consider: the pipe's thickness and diameter. Initially, it is necessary to measure the pipe's outer diameter (OD) and wall thickness (WT) using either a caliper or a measuring tape. Upon obtaining these measurements, the inner diameter (ID) can be determined by subtracting twice the wall thickness from the outer diameter (ID = OD - 2 * WT). Subsequently, utilize the formula for the cross-sectional area of the pipe (A = π * (OD^2 - ID^2) / 4) to calculate the cross-sectional area. Lastly, multiply the cross-sectional area by the steel's density, typically around 490 pounds per cubic foot, to derive the weight per foot of the steel pipe. Weight per foot (WPF) = A * 490 It is vital to acknowledge that this calculation provides an approximation of the weight per foot, as manufacturing tolerances and slight variations in steel density may impact the actual weight. Thus, it is advisable to employ this calculation as a reference and consult the manufacturer's specifications for more accurate information.

Q: Is the same specification seamless steel pipe more expensive than welded pipe?: Seamless steel pipe having a hollow cross section, used as a conduit for conveying fluids, such as pipelines for transporting petroleum, natural gas, gas, water, and certain solid materials.

Q: What is the difference between hot-dip galvanizing and electroplating for steel pipes?: Hot-dip galvanizing and electroplating are both methods used to protect steel pipes from corrosion, but they differ in the process and the properties of the resulting coating. Hot-dip galvanizing involves immersing the steel pipe in a bath of molten zinc, which forms a thick and durable coating that bonds metallurgically with the steel. This provides excellent corrosion resistance and protection even in harsh environments. On the other hand, electroplating involves the deposition of a thin layer of zinc onto the steel pipe using an electric current. While electroplating also offers corrosion protection, the coating is typically thinner and less durable than hot-dip galvanizing. Hot-dip galvanizing is typically preferred for steel pipes that require long-lasting protection, while electroplating may be suitable for applications where a thinner coating is sufficient.

Q: Can steel pipes be coated for aesthetic purposes?: Yes, steel pipes can be coated for aesthetic purposes. Coating steel pipes not only adds a visually appealing finish but also provides protection against corrosion and other environmental factors. There are various coating options available for steel pipes, such as powder coating, epoxy coating, and vinyl coating, among others. These coatings can be applied in different colors and textures to enhance the appearance of the pipes and complement the surrounding environment. Whether in industrial settings, architectural projects, or decorative applications, coating steel pipes can transform them into visually appealing elements while maintaining their structural integrity.

Q: Hot galvanized steel pipe for use?: 1, galvanized layer uniformity: steel pipe sample in copper sulfate solution immersion 5 times continuously, must not turn red (copper plated)2, surface quality: galvanized steel pipe surface should be complete galvanized layer, must not have plating on the black spots and bubbles exist, allow little rough surface and local zinc tumor exists.3, galvanized layer weight: according to the requirements of the buyer, galvanized steel pipe can be used for zinc layer weight determination, its average value should be not less than 500g/ square meters, and any sample shall not be less than 480g/ square meters.

Q: What is the typical diameter range of steel pipes?: The diameter of steel pipes can vary depending on factors such as the intended use, industry standards, and project requirements. Generally, steel pipes come in a wide range of diameters to cater to different needs. Typical sizes can range from small diameters of approximately 0.5 inches (12.7 mm) to larger diameters of several feet or more. This wide range allows for various applications, including plumbing, oil and gas transportation, structural support, and industrial processes. Ultimately, the diameter of a steel pipe will be determined by the specific requirements of the project or application.

Q: What are the different types of steel pipe coatings for corrosion protection?: Some of the different types of steel pipe coatings for corrosion protection include epoxy coatings, polyethylene coatings, polyurethane coatings, and zinc coatings.

Q: How are steel pipes made?: Steel pipes are made through a process called seamless or welded pipe manufacturing. In seamless manufacturing, a solid steel billet is heated and pierced to form a hollow tube. It is then stretched and rolled to the desired diameter and wall thickness. Welded pipes are made by bending and welding a steel plate or strip to form a cylindrical shape. The welded seam is then heat-treated to ensure its strength and durability. Both processes involve subsequent finishing and inspection to meet the required specifications and quality standards.

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