SPIRAL WELDED STEEL PIPE 12‘’ 36‘’ 48‘’ CARBON

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t

Supply Capability:: 3000 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

Spiral Welded Steel Pipes and Tubes

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:How do steel pipes resist corrosion?: Steel pipes resist corrosion through a process called passivation, wherein a protective layer of oxide forms on the surface of the steel, preventing further oxidation and corrosion. Additionally, the pipes can be coated with anti-corrosive materials or undergo treatments such as galvanization or lining to enhance their resistance against corrosion.

Q:Can steel pipes be used for fire protection systems?: Yes, steel pipes can be used for fire protection systems. Steel pipes are commonly used in fire sprinkler systems due to their durability, strength, and resistance to high temperatures. They are capable of withstanding the heat and pressure generated during a fire, making them suitable for fire protection applications. Additionally, steel pipes can be easily connected and installed, ensuring efficient and reliable fire suppression in buildings.

Q:What are the common protective coatings used on the inner surface of steel pipes?: The common protective coatings used on the inner surface of steel pipes include epoxy, polyurethane, and cement mortar coatings. These coatings provide corrosion resistance, prevent the formation of scales, and improve the durability and lifespan of the pipes.

Q:Why should the weak electricity be pre buried with galvanized steel pipe?: Galvanized steel pipe mainly because of anti-interference and electrical connectivity, to prevent other strong magnetic strong signal interference weak signal, while in the electrical connection, galvanized steel pipe can be directly connected to the bridge.

Q:Can steel pipes be used for steam systems?: Yes, steel pipes can be used for steam systems. Steel pipes are commonly used in steam systems due to their high strength, durability, and heat resistance properties. Additionally, steel pipes can withstand high pressures and temperatures, making them suitable for transporting steam safely and efficiently.

Q:Are steel pipes suitable for underground mining applications?: Steel pipes are a great choice for underground mining. The mining industry has been using steel pipes for a long time, and they have many different uses, such as supplying water, providing ventilation, and moving materials. Steel pipes are strong and durable, making them perfect for the tough conditions of underground mining. One of the reasons steel pipes are so good for underground mining is their high tensile strength. This means they can handle the pressure and stress from the rock and earth around them. They can also carry heavy loads, which is important for transporting materials and supporting structures in mining tunnels. Another advantage of steel pipes is their resistance to corrosion. This is really important in underground mining, where there's often moisture and chemicals around. With steel pipes, you don't have to worry about them getting damaged and needing to be replaced or repaired all the time. Steel pipes are also easy to weld and join together. This means they can be customized to fit different shapes and sizes to suit the specific needs of each mining operation. To sum up, steel pipes are a fantastic choice for underground mining because they're strong, durable, resistant to corrosion, and versatile. They've been proven to be effective in supporting mining operations and ensuring safety and efficiency.

Q:Is the seamless steel pipe used in the market hot or cold drawn?: Outside diameter 89, most are cold drawn, more than 89 hot rolling.

Q:What is the difference between steel pipes and cast iron pipes?: The main difference between steel pipes and cast iron pipes is the material they are made of. Steel pipes are made from an alloy of iron and carbon, making them stronger and more durable. On the other hand, cast iron pipes are made solely from iron, which makes them more brittle and prone to cracks. Additionally, steel pipes have a smoother interior surface, allowing for better water flow and reducing the chance of clogs. Cast iron pipes, on the other hand, have a rougher interior surface and are more susceptible to corrosion. Overall, steel pipes are typically preferred for their strength and longevity, while cast iron pipes may be used in specific applications where their unique properties are advantageous.

Q:What is the process of spiral steel tube production?: X ray flaw detection: 100% X ray industrial television inspection of internal and external weld seams, and image processing system is adopted to ensure the sensitivity of flaw detection.8. press test: the steel pipe is tested by root test on the water pressure test machine to ensure the test pressure of the steel pipe to meet the standard requirement.9. chamfering flat head: the qualified steel pipe is processed at the end of the pipe to achieve the required size of the end of the pipe10. final inspection: ultrasonic and X ray inspection, and magnetic particle inspection at the end of pipe to check for welding problems and pipe end defects.11., marking: qualified steel pipe for oil, in order to prevent corrosion, and according to user requirements for marking.

Q:How are steel pipes insulated to prevent heat loss?: Steel pipes are typically insulated using materials such as fiberglass, foam, or mineral wool. These insulation materials are wrapped around the pipes and securely held in place with tapes or clamps. This insulation layer acts as a barrier, reducing heat transfer and preventing heat loss from the steel pipes.

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