Stainless Steel Welded Pipe ASTM A358 and A316

Stainless Steel Welded Pipe ASTM A358 and A316 System 1

Stainless Steel Welded Pipe ASTM A358 and A316

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 30 m.t.

Supply Capability:: 9000 m.t./month

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1、Structure of /Stainless Steel Welded Pipe ASTM A358/A312Description：

Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings.

2、Main Features of the Stainless Steel Welded Pipe ASTM A358 and A316：

• High manufacturing accuracy

• High strength

• Small inertia resistance

3、Stainless Steel Welded Pipe ASTM A358 and A316Images：

Stainless Steel Welded Pipe ASTM A358 and A316

4、Stainless Steel Welded Pipe ASTM A358 and A316 Specification：

Size：

Outside diameter		Outside	Thickness
Outside diameter		Outside	SCH 5S	SCH 10S	SCH 20S	SCH 40S
(A)	(B)	mm	mm	mm	mm	mm
350	14′	355.6	3.96	4.78	7.92	11.13
400	16′	406.4	4.19	4.78	7.92	12.7
450	18′	457.2	4.19	4.78	7.92	14.27
500	20′	508	4.78	5.54	9.53	15.09
550	22′	558.8	4.78	5.54	9.53	15.09
600	24′	609.6	5.54	6.35	9.53	17.48
650	26′	660.4	5.54	7.92	12.7	17.48
700	28′	711.2	5.54	7.92	12.7	17.48
750	30′	762	6.35	7.92	12.7	17.48
800	32′	812.8		7.9	12.7	17.48
850	34	863.6		7.92	12.7	17.48
900	36′	914.4		7.92	12.7	19.05
1000	40′	1016		9.53

Tolerances on dimensions table：

Standard	Outside(mm)		Thickness(mm)	Length(mm)
ASTM A312	≤48.26	-0.4	+No special provisions(Unspecified)-12.50%	Appoint LengthDefinite cut length+6.40
	＞48.26~114.30	0		0
	＞114.30~219.08	0.8
	＞219.08~457.20	1.6
	＞457~660	-4
	＞660~864	-5
	＞864~1219	-5.6
JIS G3459	＜30.00 ±0.30≥30.00 ±1.00%		＜2.00 ±0.20≥2.00 ±10%	Appoint LengthDefinite cut Length
GB/T 12771	＜13.00 ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%		≤4.00 +0.50 -0.60＞4.00 ±10%	20

5、FAQ of Stainless Steel Welded Pipe ASTM A358 and A316：

①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

Any question, pls feel free to contact us !

Q: How are steel pipes used in the construction of dams and water reservoirs?: Steel pipes are used in the construction of dams and water reservoirs primarily for their strength and durability. They are commonly used to transport water within the dam or reservoir, as well as for drainage systems. Steel pipes are also utilized for the construction of intake and outlet structures, penstocks, and other components that require a robust and reliable material to withstand the high pressure and heavy loads associated with dam operation.

Q: Can steel pipes be used for conveyor systems?: Yes, steel pipes can be used for conveyor systems. Steel pipes are known for their strength, durability, and resistance to wear and tear, making them suitable for handling heavy loads and continuous operation in conveyor systems. Additionally, steel pipes can be easily welded, allowing for customization and flexibility in conveyor designs.

Q: How are steel pipes coated for protection?: Steel pipes are commonly coated for protection through a process called galvanization. This involves immersing the pipes in a bath of molten zinc, creating a protective layer that prevents corrosion and extends their lifespan. Additionally, other methods such as epoxy coatings or polyethylene wrappings can be used to provide additional protection against external factors.

Q: What are the different types of thread connections used in steel pipes?: There are several types of thread connections commonly used in steel pipes, including tapered threads such as NPT (National Pipe Taper), which are designed to create a tight seal, and straight threads like NPS (National Pipe Straight), which are often used for mechanical applications. Additionally, some other types of thread connections used in steel pipes include BSP (British Standard Pipe), which is widely used in Europe, and API (American Petroleum Institute) threads, which are commonly used in the oil and gas industry.

Q: How are steel pipes used in the construction of bridges?: Steel pipes are commonly used in the construction of bridges as they provide structural support and stability. These pipes are used for various purposes, such as creating the framework, piling, and supporting the bridge's weight. Additionally, steel pipes are often used in the construction of bridge piers and abutments, as well as for drainage systems and utility tunnels. Their high strength and durability make steel pipes essential components in ensuring the safety and longevity of bridge structures.

Q: The outer circle of a seamless steel pipe 50 head into the outer circle of the 40 to close: According to the metal processing performance, pipe size, quality requirements, as well as investment and benefits to choose different processing methods and corresponding auxiliary processes. The basic process of cold rolling of cold drawn pipe are: (1) tube feeding, the pipe material for hot-rolled finished or semi-finished tube, pipe extrusion pipe and welded pipe; (2) pipe material preparation, including inspection, bundling, pickling, cleaning, washing, drying, neutralization, grease and so on; (3) cold processing (cold or cold); (4) finished finishing finished including heat treatment, straightening, sampling, end cutting, inspection (manual inspection and various testing), pressure test, oiling, packaging and warehousing etc.. Different products are refined and the content varies.

Q: What is galvanized steel pipe?: Galvanized steel pipe is a type of steel pipe that has been coated with a layer of zinc to protect it from corrosion. This process involves immersing the steel pipe in a molten zinc bath, which creates a protective barrier on the surface of the pipe. The zinc coating helps to prolong the lifespan of the steel pipe, making it resistant to rust and other forms of corrosion. Galvanized steel pipes are commonly used in plumbing, water supply, and construction applications.

Q: Can steel pipes be used for water supply lines?: Yes, steel pipes can be used for water supply lines. Steel pipes are commonly used in industrial and commercial applications for transporting water and other fluids. They offer a high level of durability and strength, making them suitable for high-pressure systems. Additionally, steel pipes have excellent resistance to corrosion, which is important for maintaining the quality and safety of the water supply. However, it is essential to ensure that the steel pipes used for water supply lines are properly coated or lined to prevent any potential contamination of the water.

Q: What are the different methods of welding steel pipes?: There are several methods of welding steel pipes, including arc welding, TIG (tungsten inert gas) welding, MIG (metal inert gas) welding, and oxy-fuel welding. Each method has its own advantages and applications, depending on factors such as the thickness of the steel, the desired strength of the weld, and the available equipment.

Q: How are steel pipes protected against microbial corrosion?: Various methods are employed to safeguard steel pipes against microbial corrosion. One widely used technique entails applying coatings onto the surface of the pipes. These coatings act as a shield, effectively blocking the entry of microbes and their corrosive byproducts into the steel, thereby safeguarding it from degradation. Coatings like epoxy, polyethylene, and fusion bonded epoxy are frequently utilized to bestow this protection. Another method involves the use of corrosion inhibitors. These inhibitors are added to the fluid that flows through the pipes in order to impede microbial growth and prevent corrosion. They can be either organic or inorganic compounds that function by either eradicating the microbes or inhibiting their metabolic activity. Furthermore, ensuring proper maintenance and cleaning of the pipes is vital in preventing microbial corrosion. Regular inspections and cleaning routines aid in the elimination of any biofilms or microbial deposits that may have formed on the pipe's surface. This significantly reduces the likelihood of microbial corrosion and prolongs the lifespan of the pipes. In certain cases, cathodic protection may also be employed. This method entails utilizing sacrificial anodes or impressed current systems to supply a protective electrical current to the pipe. This current helps prevent the formation of corrosive microorganisms and shields the steel from corrosion. In summary, a combination of coatings, corrosion inhibitors, regular maintenance, and cathodic protection techniques are employed to protect steel pipes from microbial corrosion. By utilizing these strategies, the longevity and integrity of the pipes are ensured, benefiting various industries such as oil and gas, water supply, and sewage systems.

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