• Stainless Steel Welded Pipe ASTM A358 and A312 System 1
  • Stainless Steel Welded Pipe ASTM A358 and A312 System 2
  • Stainless Steel Welded Pipe ASTM A358 and A312 System 3
Stainless Steel Welded Pipe ASTM A358 and A312

Stainless Steel Welded Pipe ASTM A358 and A312

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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. 







2Main Features of the Stainless Steel Welded Pipe ASTM  A358 and A312


• High manufacturing accuracy

• High strength

• Small inertia resistance







3Stainless Steel Welded Pipe ASTM  A358 and A316Images



Stainless Steel Welded Pipe ASTM A358 and A312

Stainless Steel Welded Pipe ASTM A358 and A312







 

4Stainless Steel Welded Pipe ASTM  A358 and A312 Specification

Size

 

Outside   diameter          Outside                                                                           Thickness
SCH 5SSCH 10SSCH 20SSCH 40S
(A)(B)mmmmmmmmmm
35014′355.63.964.787.9211.13
40016′406.44.194.787.9212.7
45018′457.24.194.787.9214.27
50020′5084.785.549.5315.09
55022′558.84.785.549.5315.09
60024′609.65.546.359.5317.48
65026′660.45.547.9212.717.48
70028′711.25.547.9212.717.48
75030′7626.357.9212.717.48

 

 

Tolerances on dimensions table

 

JIS G345930.00   ±0.30≥30.00 ±1.00%2.00   ±0.20≥2.00 ±10%Appoint   LengthDefinite cut Length
GB/T 1277113.00   ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%≤4.00 +0.50   -0.604.00 ±10%20
EN 10217-7D1±1.50%   with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)T1±15.00%   with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)≤6000 +5.00   -06000~12000 +10.00 -0
D4±0.5%   with±0.10mm(min)T4±7.50%   with±0.15mm(min)
 T5±5.00%   with±0.10mm(min)
 EN ISO 1127

 

 

 




5FAQ of Stainless Steel Welded Pipe ASTM  A358 and A312 



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 typical diameter range for steel pipes?
The typical diameter range for steel pipes can vary depending on the specific application and industry requirements. However, in general, steel pipes can have diameters ranging from as small as 0.5 inches (12.7 millimeters) up to several feet (over a meter) in diameter. The most commonly used steel pipes for various purposes, such as plumbing, construction, and transportation of fluids or gases, typically fall within the range of 1/2 inch (13 millimeters) to 36 inches (914 millimeters) in diameter. It is important to note that larger diameter steel pipes are often used for industrial applications, such as oil and gas pipelines, while smaller diameter pipes are commonly used for residential and commercial plumbing systems.
Q: What is the process of spiral steel tube production?
Butt welding: the use of advanced double submerged arc welding technology for pre welding, internal welding, external welding. The welded steel tubes are cut into standard lengths using a plasma gage.
Q: How are steel pipes protected against soil movement?
Steel pipes are protected against soil movement through various methods such as using casing pipes, employing anchor systems, implementing protective coatings, and utilizing concrete thrust blocks. These measures ensure that the steel pipes remain stable and secure in the event of soil movement.
Q: What are the different coating materials used for steel pipes?
There are several different coating materials used for steel pipes, including epoxy, polyurethane, coal tar enamel, and zinc. These coatings are applied to the steel pipes to provide protection against corrosion and to enhance their durability and lifespan.
Q: Can steel pipes be used for underwater applications?
Yes, steel pipes can be used for underwater applications. Steel pipes are known for their durability and corrosion resistance, making them suitable for various underwater purposes such as offshore oil drilling, underwater construction, and marine transportation. Additionally, steel pipes can withstand the high pressure and harsh environmental conditions present underwater, making them a reliable choice for such applications.
Q: What are the different methods of threading steel pipes?
There are several methods of threading steel pipes, including manual threading, machine threading, and cutting threads using a thread cutting die. Manual threading involves using a handheld pipe threading tool to create threads on the pipe. Machine threading utilizes a power-driven pipe threading machine to efficiently create threads. Cutting threads using a thread cutting die involves using a die and a handle to manually cut threads on the pipe. These methods are commonly used in various applications, such as plumbing, construction, and industrial settings.
Q: Can steel pipes be used for underground fire hydrants?
No, steel pipes are not typically used for underground fire hydrants. Underground fire hydrants are usually constructed using ductile iron pipes as they provide greater strength, durability, and resistance to corrosion, ensuring reliable water supply during emergencies.
Q: How are steel pipes used in the electronics industry?
Steel pipes are commonly used in the electronics industry for the transportation of various gases and liquids, such as coolant and process fluids, within electronic systems. They are also utilized for the construction of supporting structures and frameworks in electronic equipment and facilities.
Q: How do you calculate the pipe pressure loss coefficient for steel pipes?
To calculate the pipe pressure loss coefficient for steel pipes, you can use the Darcy-Weisbach equation, which is a widely accepted method for determining the pressure loss in pipes due to friction. The equation is as follows: ΔP = f × (L/D) × (V^2/2g) Where: - ΔP is the pressure loss (in units of pressure, such as psi or Pa) - f is the Darcy friction factor (dimensionless) - L is the length of the pipe (in units of length, such as feet or meters) - D is the diameter of the pipe (in units of length, such as feet or meters) - V is the velocity of the fluid flowing through the pipe (in units of velocity, such as ft/s or m/s) - g is the acceleration due to gravity (in units of acceleration, such as ft/s² or m/s²) The Darcy friction factor (f) is a dimensionless parameter that represents the amount of frictional resistance in the pipe. For steel pipes, the friction factor can be determined using the Moody diagram, which is a graphical representation of the relationship between the Reynolds number (Re) and the friction factor (f) for different pipe roughness. To calculate the pressure loss coefficient, you need to find the value of the friction factor (f) based on the Reynolds number (Re) and the relative roughness of the steel pipe (ε/D). The Reynolds number is given by: Re = (ρ × V × D) / μ Where: - ρ is the density of the fluid (in units of mass per unit volume, such as lb/ft³ or kg/m³) - V is the velocity of the fluid (in units of velocity, such as ft/s or m/s) - D is the diameter of the pipe (in units of length, such as feet or meters) - μ is the dynamic viscosity of the fluid (in units of force per unit area per unit time, such as lb/ft·s or kg/m·s) Once you have the Reynolds number (Re) and the relative roughness (ε/D), you can use the Moody diagram to find the corresponding friction factor (f). The pressure loss coefficient (K) can then be calculated as: K = f × (L/D) Where: - L is the length of the pipe (in units of length, such as feet or meters) - D is the diameter of the pipe (in units of length, such as feet or meters) By using the Darcy-Weisbach equation and the Moody diagram, you can accurately calculate the pressure loss coefficient for steel pipes, which is essential for designing and analyzing fluid flow systems.
Q: Can steel pipes be used for transporting chemicals?
Yes, steel pipes can be used for transporting chemicals. Steel pipes are known for their strength and durability, making them suitable for various applications, including the transportation of chemicals. Additionally, steel pipes are resistant to corrosion, which is crucial when dealing with potentially corrosive substances. However, it is important to ensure that the specific type of steel used in the pipes is compatible with the chemicals being transported to prevent any reactions or contamination.

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