Stainless Steel Pipes

Stainless steel pipe is a high-quality alloy steel that contains iron and chromium elements. These pipes are used to carry highly corrosive fluids and chemical gases, which is why it is called corrosion resistant pipes. Thaida is a leading manufacturer of stainless steel pipes based in Chon Buri, Thailand and is known for delivering quality and performance. These pipes have a thin layer of chromium coating, which protects against corrosion and makes them long-lasting. We offer high-quality SS pipes in various sizes, thicknesses, and grades that meet ASTM 312 standards and are demanded in various industrial applications.

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What are Stainless steel pipes?

Stainless steel pipe is a versatile and durable pipe that has unique properties such as high strength and heat resistance. These austenitic pipes come in various grades, such as 304 and 316, which are known for their unique compositions and characteristics. It is a popular choice for various industries.

Key Benefits of Stainless Steel Pipes

Here are some key advantages of SS pipe that make it the preferred choice for demanding environments:

Stainless steel pipes form a chromium layer which protects them from rust or corrosion over time, when exposed to moisture, air or any harsh environment.

As SS pipes have a smooth, shiny, non-porous surface that stops bacterial growth and are easy to clean and sanitize, which makes them ideal for applications where cleanliness is paramount.

These pipes have a high degree of durability and strength with less chance of fracture at high and low temperatures. They are also easy to cut, weld, construct, etc, without losing their shape.

Stainless steel pipe is 100% recyclable; it can be melted down and turned back into pipe as well as into other products, and can be used in a different industry.

As SS pipes do not rust or need painting or protective coating over time, they reduce maintenance costs and keep their strength and appearance over time, even in harsh environments.

Stainless steel pipes are versatile because they can be used in various industries and can be manufactured in custom sizes to meet industrial requirements.

Why Choose Thaida for Your Stainless Steel Pipe Needs?

We are one of the leading stainless steel pipe suppliers, trusted by clients across the world. As a professional and experienced SS pipe stockist, we ensure fast service, strict quality inspection and ready stock availability for every order, which makes us a preferred choice in the industry.

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Stainless Steel Pipes Specifications

Below is the specification of stainless steel pipe that outlines key details such as size, wall thickness, length, standard, etc, to help you choose the right product for your needs.

Standard Specification	ASTM A 312/ ASME SA 312
Size	½” to 6” NB Sch 10s, 40s, & 80s, 160s
Wall Thickness	0.1 – 60 mm
SS Seamless Pipes Length	Single Random Length 5 to 7 mtr Double Random Length 10–12 mtr
Seamless SS Pipes Surface Finish	Cold Finish, Bright, Polished, Annealing, Pickling, or as per client requirements
Standard	JIS, AISI, ASME, ASTM, AMS, GB, DIN, EN, GOST
Manufacturing types	Seamless
Manufacturing Shapes	Round, Square, Rectangle, Box Section
Manufacturing Technology	Hot / Cold Formed
Hot SS Pipes grades	ASTM A312 TP304 ASTM A312 TP304L ASTM A312 TP316 ASTM A312 TP316L ASTM A312 TP321 ASTM A312 TP321H ASTM A312 TP347H ASTM A312 TP347 ASTM A312 TP310S ASTM A312 TP304H Stainless Steel 410 Pipes Stainless Steel 317L Pipes Stainless Steel 310 Pipes Stainless Steel 316H Pipes
Inspection, Test Reports	EN 10204 3.1, Mill Test Certificates, PMI Test Reports, Chemical Reports, Mechanical Reports, NABL Approved Lab Reports, Visual Inspection Reports, Destructive and Non Destructive Test Reports, Third Party Inspection
Technique	Cold Rolled Hot Rolled

Common Types of Stainless Steel Pipes

The common types of stainless steel pipes such as seamless pipes, round pipes and rectangular pipes which are designed to meet specific applications and industrial needs.

Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. delivers only high-quality Nickel seamless pipes

ASTM A312 Stainless Steel Pipes OD Tolerance

The ASTM A312 stainless steel outer diameter tolerance table sets a standard for outside diameters used in industrial applications to ensure precise dimensional accuracy for a better fit and reliable performance.

Standard	Out diameter (mm)		Wall thickness (mm)	Length (mm)
ASTM A312	≤48.26	+0.40 -0.80	+(Unspecified) -12.50%	Definite cut length +6.40 -0
	＞48.26~114.30	+0.80 -0.80
	＞114.30~219.08	+1.60 -0.80
	＞219.08~457.20	+2.40 -0.80
	＞457~660	+3.20/-0.80
	＞660~864	+4.00/-0.80
	＞864~1219	+4.48/-0.80

Note: At Thaida, we understand that ASTM A312 pipe tolerances can vary depending on customer requirements and the specific edition of the ASTM A312 standard. Please refer to the latest ASTM A312 standard and contact us for the most accurate and up-to-date size tolerances.

Heat Treatment of Stainless Steel Pipes

The table below provides details of the heat treatment process for stainless steel pipes, including UNS designation, heat treating temperature, and cooling or testing requirements to enhance mechanical properties and performance.

Grade or UNS Designation^A	Heat Treating Temperature^B	Cooling/Testing Requirements
All grades not individually listed below:	1900°F [1040°C]	C
TP321H, TP347H, TP348H Cold finished	2000°F [1100°C]	D
TP321H, TP347H, TP348H Cold finished	1925°F [1050°C]	D
TP304H, TP316H Cold finished	1900°F [1040°C]	D
TP304H, TP316H Cold finished	1900°F [1040°C]	D
TP309H, TP309HCb, TP310H, TP310HCb	1900°F [1040°C]	D
S30600	2010–2140°F [1100–1170°C]	D
S30815, S32172	1920°F [1050°C]	D
S31254, S32654	2100°F [1150°C]	D
S33228	2050–2160°F [1120–1180°C]	D
S24565	2050–2140°F [1120–1170°C]	D

Different Stainless Steel Pipes Materials

Stainless steel pipes come in various grades, each designed to meet specific mechanical and corrosion-resistance requirements, below are the main types:

Austenitic Stainless Steel Grades

Known for excellent corrosion resistance, formability, and weldability. It is widely used in food processing, chemical plants, and architectural applications.

Grade	EN Standard
301	+0.40 −0.80
304	+0.80 −0.80
304L	+1.60 −0.80
201	+2.40 −0.80
316	+3.20/−0.80
316L	+4.00/−0.80

Ferritic Stainless Steel

Ferritic stainless steel is a type of stainless steel that is magnetic, strong, and has good corrosion resistance, made mostly with chromium and little or no nickel.

Grade	EN Standard
301	+0.40 −0.80
304	+0.80 −0.80
304L	+1.60 −0.80
201	+2.40 −0.80
316	+3.20/−0.80
316L	+4.00/−0.80

Duplex Stainless Steel

Combines the benefits of austenitic and ferritic steels, offering high strength and excellent resistance to pitting and stress corrosion. Ideal for marine and chemical industries.

Grade	EN Standard
301	+0.40 −0.80
304	+0.80 −0.80
304L	+1.60 −0.80
201	+2.40 −0.80
316	+3.20/−0.80
316L	+4.00/−0.80

Precipitation Hardening Stainless Steel

Achieves high strength and hardness through heat treatment while maintaining good corrosion resistance. Commonly used in aerospace, nuclear, and high-performance applications.

Grade	EN Standard
301	+0.40 −0.80
304	+0.80 −0.80
304L	+1.60 −0.80
201	+2.40 −0.80
316	+3.20/−0.80
316L	+4.00/−0.80

Stainless Steel Pipes Manufacturing Process

Below are five steps involved in manufacturing high-quality stainless steel pipes. We follow a professional and precise manufacturing process to deliver high-quality products. Each step ensures the pipe’s strength, durability and flawless finish, meeting industry standards.

1. Raw Material Selection
High-quality stainless steel billets and strips are carefully selected for superior strength and corrosion resistance.

2. Pipes Formation
The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.

3. Heat Treatment
Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.

4. Cold Working and Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.

5. Quality Control and Testing
Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.

Some of the Common Applications for Stainless Steel Pipes

Stainless steel pipes are used for transporting harsh liquids, gases, and other chemical substances. They are applied in various industries for various purposes, mainly in the oil and gas industry where it is used for transporting crude oil, natural gas and refined products. SS pipes are also applicable in food and beverage, chemical, petrochemical and pharmaceutical industries.

Aerospace & Defense

Automotive and Transportation

Oil and Gas Industry

Chemical and Petrochemical Industry

Construction and Architecture

Food and Beverage Industry

Marine & Shipbuilding

Pharmaceutical & Biotechnology

Power Generation & Heat Exchange

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FAQ's

What materials are used to manufacture Stainless Steel Pipes?

Stainless steel pipes are primarily made from an alloy of iron and carbon with other alloying elements like chromium to prevent corrosion and nickel to improve strength and toughness. Stainless steel pipes are made from a mix of iron and carbon with other metals like chromium to stop rust and nickel to make the pipes stronger and tougher. Depending on the grade and application of the pipe, other materials like molybdenum, manganese, silicon, nitrogen, and copper are added for improved strength or corrosion resistance.

Can Stainless Steel Pipes be used in high-temperature applications?

Yes, some types of stainless steel pipes are specifically designed for high-temperature applications. Grades like 310, 310S, and high-carbon 304H can endure temperatures well above standard grades

What industries commonly use Stainless Steel Pipes?

Stainless steel pipes are commonly used in the oil and gas, chemical processing, food and beverage, and construction industries due to their resistance to corrosion, high strength, and durability. Pharmaceuticals, automotive, aerospace, power generation, and medical equipment also use them frequently.

Are Stainless Steel Pipes available in seamless and welded forms?

Yes, stainless steel pipes are available in both seamless and welded forms. Seamless pipes are manufactured without a weld seam, making them stronger and better suited for high-pressure or high-temperature applications. Welded pipes are made by rolling and welding a flat sheet or coil, and are more cost-effective for general applications.

What is a seamless stainless steel pipe?

A seamless stainless steel pipe is a hollow, tubular product manufactured without welded seams. It is created by heating a solid steel billet and piercing it with a mandrel. This process creates a pipe with superior strength, durability, and corrosion resistance, making it ideal for high-pressure and high-temperature applications where a welded seam could be a weak point.

How long do stainless steel pipes last?

Stainless steel pipes can last anywhere from 20 to over 100 years, with their lifespan depending on the grade of stainless steel, the environment, proper installation and maintenance. Pipes in typical water supply systems can last 50 to 100 years and industrial pipes in corrosive conditions might last 20 to 50 years.