Stainless Steel Pipe

SS Round Pipe and Stainless Steel Seamless Pipe suppliers in UAE

What is a stainless steel seamless pipe?

A stainless steel seamless pipe is a grade designed without a seam or weld joint. Stainless steel seamless pipe is produced as hot round steel billets are passed through extruded metal. The billet stretches the metal as it is pushed using a mandrel and die. This helps enhance the quality of the SS seamless pipe by increasing its inside diameter and reducing its outer diameter.

A versatile SS pipe exhibits superior strength and can handle higher pressure and temperatures in different conditions. High temperature stainless steel pipe is manufactured in a variety of sizes; however, as the diameter increases production becomes difficult and costly.

The Stainless steel high pressure pipe has a rough extrusion process and is slightly more expensive than other grades. However, it offers better performance and has excellent ovality.

A Stainless steel pipe of the seamless grade has excellent performance and works well in corrosive and reducing conditions. Generally, stainless steel pipe suppliers supply pipes to power piping, shipbuilding, pressure vessel, chemical, and construction industries.

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Table of Content

• Stainless Steel Pipe Specification
• What are most selling types of SS pipe?
• Price list of Stainless Steel Seamless Pipe
• High Temperature Stainless Steel Pipe Schedule Chart
• What is SCH40 seamless stainless steel pipe maximum pressure?
• SS Pipe Manufacturing Process
• Size chart of Sch 10 Stainless Steel Pipe
• What are Common Standards of SS pipe?
• ASTM A312 Permitted Tolerance in Wall Thickness
• Schedule 40 Stainless Steel Pipe Industrial Application

What are the ss seamless pipe manufacturing defects? Which testing is required to detect them?

Stainless steel seamless pipe can sometimes exhibit manufacturing defects that can affect its quality and performance. Inclusions can weaken the stainless steel pipe and make it more susceptible to corrosion or mechanical failure. Localized areas of reduced wall thickness can also occur in SS pipes during the manufacturing process.

To detect these manufacturing defects in a SS seamless pipe, a visual inspection must be done thoroughly. Ultrasonic testing can be done to identify inclusions, cracks, or wall thickness variations by analyzing the reflection and transmission of sound waves.

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What are Common Standards of SS pipe ?

• ASTM A312/ SA 312
• ASTM A213/ SA 213
• ASTM A789/ SA 789
• ASTM A790/ SA 790
• ASTM A269/ SA 269
• ASTM A270/ SA 270

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Stainless Steel Pipe Specification

• OD : 5.8 to 508mm
• Wall Thickness: 0.3 to 50mm
• Standards: ASTM A312, ASTM A269, ASME SB677, ASTM A213, ASME SA 789/ASTM A789. ASME SA 790/ASTM A790
• Manufacturing Type: Seamless
• Shape: Square, Round, Box Section, Rectangle
• Manufacturing Technology: Hot / Cold Formed

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What is the maximum allowable working pressure for stainless steel seamless pipe? Which formula is used to calculate it?

The maximum allowable working pressure (MAWP) for high temperature stainless steel pipe depends on various factors. Factors like material grade, pipe dimensions such as diameter, and operating conditions influence the MAWP of stainless steel high pressure pipe.

The calculation of MAWP for stainless steel round pipe involves applying relevant design codes and standards specific to the industry and application. One commonly used formula to calculate the MAWP of a schedule 40 stainless steel pipe is based on the ASME Boiler and Pressure Vessel Code.

The formula for calculating the MAWP of SCH 10 stainless steel pipe is MAWP = 2 * S * t / (D – 2 * (P + 0.5 * S)).

What are most selling types of SS pipe?

Price list of Stainless Steel Seamless Pipe

Grade 304

Please note:You can speak with the accredited manufacturers and suppliers listed on this page for prices, which may vary depending on where you are..

What is the manufacturing process of SS seamless pipes?

• The manufacturing process of a cold rolled stainless steel pipe begins by procuring high-quality SS billets or ingots.
• Next, the SS billets are heated to facilitate the subsequent pipe-forming process of the cold drawn stainless steel pipe.
• The heated billet is then pierced or extruded to form a hollow tube for the stainless steel water pipe.
• The sized stainless steel threaded pipe undergoes heat treatment processes to enhance its mechanical properties.
• Various finishing operations may be performed to improve the surface finish and cleanliness of the seamless pipe.
• Stringent testing procedures are finally applied to the finished SS pipes to make sure they meet the application requirements.

Large diameter & Thick wall stainless steel pipe available in Schedule 80, 40, 60, 20, STD, XXS, suitable for chilled water systems

What does schedule mean on stainless steel pipe?

The schedule usually refers to the wall thickness of a metric stainless steel pipe. It is a numerical designation that helps standardize pipe dimensions and is commonly used in the United States.

The schedule number for a SS pipe is typically represented as Sch followed by a number, such as Sch 5, Sch 10, Sch 40, etc. A higher schedule number indicates a thick wall stainless steel pipe while a low schedule refers to a thin wall stainless steel pipe.

High temperature stainless steel pipe schedule chart

What is SCH40 seamless stainless steel pipe maximum pressure?

Pressure rating depends upon sizes, wall thickness & temperature. For example:

• 1 inch Sch 40, wall thickness: 0.133, 100°F = Max pressure 2205 PSi
• 10 inch Sch 40, wall thickness: 0.365, 100°F = Max pressure 699 PSi

SS Pipe Manufacturing Process

12 steps of manufacturing method followed by hot rolled stainless steel seamless pipe manufacturers

1. Raw material – Stainless steel round bar
2. Heating process
3. Piercing
4. Three-roll cross rolling, extrusion or rolling
5. Detached
6. Sizing (or reducing)
7. Cooling
8. Parison tube
9. Straightening
10. Flaw detection or hydrostatic test
11. Marking on SS seamless pipes

Size chart of Sch 10 Stainless Steel Pipe

Check CIF Price of Cold drawn stainless steel pipe and get a reasonable cost from verified suppliers in Middle East

ASTM A312 Permitted Tolerance in Wall Thickness

Schedule 40 Stainless Steel Pipes Industrial Application

• Petroleum cracking process
• For liquid transmission pipelines
• structural and construction
• for high pressure use
• Oil and gas industries
• Mechanical use
• Casing and tubing

What are the advantages of SS pipes?

• These stainless steel pipes have excellent heat resistance properties and can sturdily withstand high temperatures without deformation.
• These stainless pipes exhibit excellent mechanical properties and can withstand high pressure, heavy loads, and harsh operating conditions.
• These pipes are widely used in food processing, pharmaceuticals, and healthcare, where maintaining sanitary conditions is crucial.
• Large diameter seamless stainless steel pipe can be recycled and repurposed without losing its quality or performance.
• Many industries employ these stainless steel smls pipes for transporting fluids, gases, and solids and for structural purposes in a wide range of applications.

A large diameter stainless steel pipe requires less maintenance and is resistant to deformation which lowers the need for frequent repairs or replacements.

How to check ends of stainless steel pipe and why it is so important?

There are a wide set of tests performed on stainless steel, making it a good choice for different applications. Hydrostatic testing is the most common test to check any leaks on a Stainless steel threaded pipe. Magnetic particle inspection is another test where a magnetic field is used to find imperfections in the metal.

Ultrasonic tests are also a viable option for testing a Large diameter seamless stainless steel pipe. This test determines the wall thickness and checks the load it can handle. The Charpy test can be employed to test its toughness. The positive material identification test helps determine its level of accuracy and strength.

The tests help in determining the strength, tolerance, and capability of the pipes to work across harsh environments.

What is the working pressure of a stainless steel round pipe?

The working pressure of a stainless steel round pipe is dependent on the material type and grade of stainless steel. Generally, the common specification of a metric stainless steel pipe can hold 7000 psi of pressure.

What is the difference between SCH 10 vs schedule 40 stainless steel pipe?

A schedule is an important parameter that measures the nominal wall thickness of a pipe. SCH 10 and 40 are two of the common pipes of stainless steel. The major difference between an SCH 10 stainless steel pipe and a schedule 40 pipe is its wall thickness and pressure holding capacity.

A pipe of schedule 10 specification has comparatively lower strength and load carrying capacity than schedule 40 stainless steel pipe. However, an SCH 10 pipe is cheaper.

How to bevel stainless steel pipe?

Beveling is a process of deburring the ends of pipes or preparing them for welding. Beveling of a Large diameter stainless steel pipe is not very complicated if you have a beveling machine. The machine creates a cut at a certain angle.

There are a variety of ways to bevel a Stainless steel water pipe. The most common ones are by using a torch or plasma cutter, a portable beveling machine, and a stationery beveling machine.

Cold rolled vs cold drawn stainless steel pipe

Cold rolled and cold drawn are both produced via the cold working process. They are differentiated based on the moulding process and processing material.

• A Cold rolled stainless steel pipe is thin and flat. Here the material is stamped using a stamping machine that rotates to give the metal a slender shape. Cold drawn stainless steel pipe is produced under high pressures. This allows the pipe to be well suited for long sections.
• A cold drawn thick wall stainless steel pipe has better strength and smooth surface finish in comparison to cold rolled pipe. The production cost of cold rolled thin wall stainless steel pipe is lower than cold drawn pipes.