• Various types of stainless steel pipe waiting for you System 1
  • Various types of stainless steel pipe waiting for you System 2
Various types of stainless steel pipe waiting for you

Various types of stainless steel pipe waiting for you

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8000 m.t./month

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Product Description:

1、Structure of Stainless Steel Welded Pipe ASTM A358/A312/A778 Description:

    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. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.

2、Main Features of the Stainless Steel Welded Pipe ASTM A358/A312/A778:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price 

3、Stainless Steel Welded Pipe ASTM A358/A312/A778 Images:

Stainless Steel Welded Pipe ASTM A358/A312/A778

Stainless Steel Welded Pipe ASTM A358/A312/A778

Stainless Steel Welded Pipe ASTM A358/A312/A778

4、Stainless Steel Welded Pipe ASTM A358/A312/A778 Specification:


Outside diameter        Outside                                                                   Thickness


Tolerances on dimensions table: 

ASTM A312≤48.26+0.40 -0.80+No special provisions(Unspecified)-12.50%Appoint LengthDefinite cut length+6.40


>48.26~114.30+0.80 -0.80
>114.30~219.08+1.60 -0.80
>219.08~457.20+2.40 -0.80
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%+20.00-0
EN 10217-7D1±1.50% with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)

D4±0.5% with±0.10mm(min)

T1±15.00% with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)

T4±7.50% with±0.15mm(min)

T5±5.00% with±0.10mm(min)

EN ISO 1127

≤6000 +5.00 -06000~12000 +10.00 -0


5、FAQ of Stainless Steel Welded Pipe ASTM A358/A312/A778: 

How 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.

How 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.

Why should you chose us?
     Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

Any question, pls feel free to contact us !

Q:What is the external protection used for stainless steel pipes?
The external protection used for stainless steel pipes can vary, but it typically involves the application of coatings or paints that provide a barrier against corrosion and other environmental factors.
Q:Can stainless steel pipes handle acidic or alkaline fluids?
Stainless steel pipes possess the ability to accommodate both acidic and alkaline fluids. Their exceptional corrosion resistance, a renowned attribute of stainless steel, renders them highly suitable for managing aggressive substances. This notable quality stems from the presence of chromium, which interacts with oxygen and generates a thin protective layer on the steel's surface, effectively halting further corrosion. This passive layer remains steadfast in both acidic and alkaline environments, furnishing long-lasting protection against corrosive fluids. However, the level of corrosion resistance may fluctuate depending on the specific stainless steel grade employed, as well as the fluid's concentration and temperature during transport. Consequently, it becomes crucial to meticulously select the appropriate stainless steel grade and duly consider factors like temperature, concentration, and potential exposure to other corrosive substances when opting for stainless steel pipes for the handling of acidic or alkaline fluids.
Q:What is the maximum temperature that stainless steel pipes can withstand?
The grade of stainless steel used determines the maximum temperature that stainless steel pipes can tolerate. Typically, stainless steel pipes have the capability to withstand elevated temperatures between 1200 and 1600 degrees Fahrenheit (650 to 870 degrees Celsius). Nevertheless, it is crucial to acknowledge that extended exposure to these extreme temperatures can weaken the stainless steel, potentially leading to deformation or failure. To determine the maximum temperature limits for a specific grade of stainless steel pipe in a particular application, it is always advisable to refer to the manufacturer's guidelines or consult with a materials engineer.
Q:Are stainless steel pipes suitable for extreme temperatures?
Yes, stainless steel pipes are suitable for extreme temperatures. Stainless steel is known for its excellent heat resistance properties, making it a popular choice for applications that involve high temperatures. Stainless steel pipes can withstand both extremely high and low temperatures, making them suitable for a wide range of industries such as oil and gas, chemical processing, power generation, and aerospace. The high chromium and nickel content in stainless steel alloys contribute to their ability to resist corrosion and oxidation, allowing them to maintain their structural integrity even under extreme temperature conditions. Additionally, stainless steel pipes have low thermal expansion and contraction rates, ensuring that they can withstand thermal cycling without significant distortion or damage. Overall, stainless steel pipes are a reliable and durable option for handling extreme temperatures.
Q:Can stainless steel pipes be used for sewage pumping stations?
Indeed, sewage pumping stations can utilize stainless steel pipes. Renowned for their resistance to corrosion, stainless steel proves to be an optimal material for sewage and wastewater applications. These pipes exhibit durability and strength, enabling them to endure the challenging circumstances and corrosive components present within sewage systems. Moreover, stainless steel exemplifies hygienic qualities and simplicity in cleaning, vital aspects for upholding the sanitation and effectiveness of a sewage pumping station. Consequently, stainless steel pipes establish themselves as a dependable and enduring selection for sewage pumping stations.
Q:What is the typical wall thickness for stainless steel pipes?
Depending on the application and specific requirements, the wall thickness of stainless steel pipes can vary. Generally, there is a wide range of wall thickness options available for stainless steel pipes. For typical applications like plumbing or industrial use, the wall thickness can range from Schedule 5S (0.049 inches or 1.24 mm) to Schedule 80S (0.218 inches or 5.54 mm). It's worth mentioning that for specialized applications or projects with specific requirements, the wall thickness can be customized accordingly. In summary, factors such as the intended use, pressure requirements, and structural considerations should be taken into account when selecting the appropriate wall thickness for stainless steel pipes.
Q:Stainless steel tube, also known as why tube?
Use can be divided into oil well pipe (casing, tubing and drill pipe etc.), line pipe, boiler tube, mechanical structure, hydraulic prop pipe pipe, cylinder pipe, geological pipe, chemical pipe (high pressure fertilizer pipe, oil cracking tube) and shipbuilding pipe etc.
Q:What is the difference between the stainless steel pipe welded pipe and seamless pipe?
Seamless tube is a strip of steel with a hollow cross section and no seams at all. The general is rolled into a cylindrical tube plate welding.
Q:How do you calculate the flow velocity in stainless steel pipes?
In order to determine the flow velocity in stainless steel pipes, one must take into account multiple factors. Firstly, it is necessary to be acquainted with the flow rate or volumetric flow rate (Q) of the fluid that passes through the pipe. This can be ascertained by measuring the volume of fluid that traverses the pipe within a given time period. Subsequently, the cross-sectional area (A) of the pipe needs to be determined. For circular pipes, this can be computed using the formula A = πr², where r denotes the radius of the pipe. Once both the flow rate (Q) and cross-sectional area (A) are known, the flow velocity (V) can be calculated using the formula V = Q / A. It is worth noting that the flow velocity may undergo variations along the length of the pipe due to factors such as friction and changes in pipe diameter. In such instances, more advanced calculations or simulations may be required to accurately ascertain the flow velocity at specific points within the pipe. Furthermore, it is crucial to take into consideration the properties of the fluid being transported, such as viscosity and density, as they can also impact the flow velocity.
Q:Can stainless steel pipes be used for chemical reactors?
Indeed, chemical reactors can utilize stainless steel pipes. Stainless steel emerges as a favored selection for chemical reactors primarily because of its remarkable corrosion resistance properties. It exhibits an exceptional ability to resist chemical reactions and endure the severe conditions and corrosiveness associated with numerous chemicals employed in industrial procedures. Furthermore, stainless steel showcases remarkable strength and durability, rendering it appropriate for managing high-pressure and high-temperature scenarios frequently encountered in chemical reactors. Moreover, stainless steel can be effortlessly cleaned and maintained, a critical aspect in preserving the purity and integrity of the chemicals being treated. All in all, stainless steel pipes prove to be a dependable and effective option for chemical reactors.

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