Q195/Q215/Q235/Q345 Rectangular hollow section/ RHS

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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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Product Name	rectangular hollow section/ RHS
Size	Size:	1010--500500mm
	Thickness:	0.45--16mm
	Length:	3-12m
Steel Grade	Q195,Q215,Q235,Q345,16Mn, 20#
Standard	ASTM A500,EN10219,GB/T6728,GB/T6725,JIS G3466
Usage	1. For Structure, Airport, Railway 2. Construction and so on.
Ends	Plain end or By Your Choice
Surface	Bared Or With Oiled Or Galvanized
Technique	ERW ,Hot Rolled and Cold Rolled
Section Shape	Rectangular
Inspection	With Hydraulic Testing, Eddy Current , Infrared Test
Package	Bags, Bundle, In Bulk, Containers
MOQ	20 Metric Ton / Can Be Negotiated
Supply Ability	15,000 Metric Ton/Month
Date of Delivery	7 days(Qty within 1000 Metric Ton) or According To The Quantity
Port of Shipment	Tianjin, China
Payment	L/C T/T

Q: How do steel pipes handle ground settlement?: Steel pipes are known for their strength and durability, making them capable of handling ground settlement effectively. Due to their rigid nature, steel pipes are resistant to deformation or collapse caused by uneven settling of the ground. This makes them a reliable choice for underground installations, as they can withstand and navigate through the changes in the ground surface without compromising their structural integrity.

Q: What is the primary purpose of steel pipes?: The primary purpose of steel pipes is to transport fluids and gases, such as water, oil, and natural gas, over long distances efficiently and safely. They are commonly used in various industries including construction, oil and gas, and infrastructure development.

Q: How are steel pipes used in the oil and gas industry?: Steel pipes are widely used in the oil and gas industry for various purposes. They are primarily used for transporting oil and gas from production sites to refineries and distribution centers. These pipes are known for their strength, durability, and resistance to corrosion, making them ideal for handling the high-pressure and corrosive nature of oil and gas fluids. Steel pipes are also used in drilling operations as casing and tubing to maintain the integrity of the wellbore and prevent any leakage. Additionally, steel pipes are utilized in the construction of oil and gas infrastructure such as pipelines, storage tanks, and offshore platforms, ensuring the safe and efficient transportation and storage of oil and gas resources.

Q: What type of steel pipe for security windows?: Stainless steel security window generally use 25 square tubes and 19 round tubes! 25/38 tubes and 22 round tubes are also available!

Q: What is the weight of hot galvanized steel tubes? DN150 4mm wall thickness: DN150 4mm wall thickness welded steel pipe theoretical weight is 16.21kg/m, galvanized steel pipe should be multiplied by the weight coefficient after galvanizing, C, DN150, wall thickness of 4mm, C=1.032, DN150, theoretical weight and wall thickness of 4mm galvanized steel is 1.02*16.21=16.7287kg/m = 16.73kg/m.

Q: How do you protect steel pipes from external damage?: To protect steel pipes from external damage, several measures can be taken. 1. Coating: Applying a protective coating on the surface of the steel pipes can help prevent external damage. Common coating options include epoxy, polyethylene, and fusion bonded epoxy (FBE) coatings. These coatings act as a barrier between the pipes and the surrounding environment, shielding them from corrosion, abrasion, and other external factors. 2. Cathodic Protection: This method involves using a sacrificial anode or impressed current to protect the steel pipes from corrosion. By connecting a less noble metal to the pipes, it attracts the corrosive elements, sacrificing itself instead of the pipes. This process helps extend the lifespan of the pipes and prevents external damage. 3. Wrapping and Taping: Wrapping the steel pipes with materials such as polyethylene or polypropylene tapes provides an extra layer of protection. These tapes act as a barrier against moisture, chemicals, and physical impact, safeguarding the pipes from external damage. Additionally, heat shrink sleeves can be used to provide insulation and protection against corrosion. 4. Underground Installation: Proper installation of steel pipes underground is crucial to protect them from external damage. This includes ensuring suitable trench depth, backfilling with appropriate materials, and avoiding excessive bending or stress on the pipes during installation. Proper bedding and padding techniques also contribute to the pipes' protection from external factors. 5. Regular Inspection and Maintenance: Periodic inspection and maintenance are essential to detect any signs of external damage early on. This can involve visual inspections, non-destructive testing, or even utilizing advanced technologies like pipeline integrity management systems. Timely repairs and maintenance can help prevent further damage and extend the lifespan of the steel pipes. Overall, protecting steel pipes from external damage requires a combination of preventative measures, proper installation techniques, and regular maintenance. By implementing these strategies, the pipes can be safeguarded against corrosion, abrasion, impact, and other factors that may compromise their integrity.

Q: What are the main components of a steel pipe?: The main components of a steel pipe are the pipe body, which is made of steel and provides structural strength and durability, and the pipe ends, which can be either threaded or plain and are used for connecting and joining the pipe to other components or systems. Additionally, steel pipes may also have protective coatings or linings to enhance corrosion resistance and prolong their lifespan.

Q: Can steel pipes be used for conveying hazardous materials?: Yes, steel pipes can be used for conveying hazardous materials. Steel pipes are known for their durability, strength, and resistance to corrosion, making them suitable for transporting various hazardous substances such as chemicals, gases, and liquids. Additionally, steel pipes can withstand high pressures and temperatures, ensuring the safe and efficient transportation of hazardous materials. However, it is important to ensure proper handling, maintenance, and adherence to safety regulations when using steel pipes for conveying hazardous materials.

Q: Can steel pipes be used for drainage systems?: Yes, steel pipes can be used for drainage systems. Steel pipes are strong, durable, and resistant to corrosion, making them suitable for carrying and directing wastewater. Additionally, their smooth interior surface allows for efficient water flow, making them a reliable choice for drainage applications.

Q: Is there any difference between HFW steel pipe and ERW steel pipe?: High frequency welding uses the skin effect to concentrate the energy of the high frequency current on the surface of the workpiece, and uses the proximity effect to control the position and range of the high frequency current flow path. The speed of the current is very fast, it can in a short period of time will be adjacent to the edge of the steel plate heating, melting, and through the extrusion docking, each has its own advantages, but also each has its own shortcomings. Generally according to specific circumstances, specific analysis of specific choices.

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