E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
Stainless steel seamless pipe is a long steel strip with a hollow cross section and no seams around it. It is a steel pipe that is resistant to corrosion by weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts. It is also called stainless acid-resistant steel pipe.
Description
Material:
Such as OCR13 stainless steel, OCR18NI9 stainless steel, etc.
Dimensions：
The outer diameter and wall thickness range of stainless steel seamless pipes are as follows:
Outer diameter: small diameter (6-20mm), medium diameter (20-100mm), larger diameter (100-300mm), large diameter (300mm and above). Specific sizes include 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 34mm, 38mm, 40mm, 42mm, 45mm, 48mm, 50mm, 51mm, 57mm, 60mm, 63mm, 65mm, 70mm, 73mm, 76mm, 80mm, 83mm, 89mm, 90mm, 95mm, 100mm, etc. 1.
Wall thickness: thin wall (0.4-2mm), medium wall thickness (2-10mm), thick wall (10-30mm or even thicker). Specific sizes include 0.4mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 6.0mm, 6.5mm, 7.0mm, 8.0mm, 9.0mm, 10.0mm, etc.
Description：
Stainless steel seamless pipe is a long steel strip with a hollow cross section and no seams around it. It is a steel pipe that is resistant to corrosion by weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts. It is also called stainless acid-resistant steel pipe.
Material
Common materials include 304, 304L, 304H, 316, 316L, 317, 317L, 321, 347, 347H, etc.
Specifications and Dimensions
Hot-rolled steel pipe: The length is generally 1.5 to 10 meters, the diameter ranges from 54 to 480 mm, and the wall thickness is 4.5 to 45 mm. 12.
Cold-drawn (rolled) steel pipe: The length is generally 1.0 to 7 meters, and the wall thickness is 0.5 to 1.0 mm. The length is 1.0 to 7 meters; the length is 1.5 to 8 meters for wall thickness greater than 1.0 mm, the diameter ranges from 6 to 200 mm, and the wall thickness is 0.5 to 21 mm.
Usage Instructions
The installation of seamless stainless steel pipes usually requires the following steps:
Cutting and trimming: Cut the steel pipe according to the required length and perform necessary trimming to ensure that the interface is flat.
Connection: Use appropriate connection methods such as welding, threaded connection or flange connection to ensure that the connection is firm and well sealed.
Fixation: Use brackets or clamps to fix the steel pipe to prevent movement or vibration during use.
Technical Parameter
The technical parameters of seamless stainless steel pipes mainly include density, mechanical properties and specifications.
Density
The density of seamless stainless steel pipes is usually 7.93kg/dm³1.
Mechanical properties
The mechanical properties of seamless stainless steel pipes include tensile strength, yield strength, elongation and hardness. For example, the tensile strength of 12Cr18Ni9 seamless stainless steel pipe is ≥520MPa, the yield strength is ≥205MPa, the elongation is ≥40%, and the hardness is ≤187HB, ≤90HRB, ≤200HV.
Specifications
The specifications of seamless stainless steel pipes include outer diameter and wall thickness. For example, the outer diameter of seamless pipes ranges from 3-577mm and the wall thickness is 0.4-14mm; the outer diameter of welded pipes ranges from 6-219mm and the wall thickness is 0.3-4.0mm1. In addition, the diameter and wall thickness of stainless steel seamless pipes also have specific ranges, such as the diameter of hot-rolled steel pipes is 54-480mm and the wall thickness is 4.5-45mm; the diameter of cold-drawn steel pipes is 6-200mm and the wall thickness is 0.5-21mm.
Application fields
Stainless steel seamless pipes are widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components. Due to its corrosion resistance and high mechanical strength, it is also often used to manufacture mechanical parts and engineering structures.
Related Products
Collaborative Case
GAE and Our Journey of Cooperation
The customer needs to develop a mining project and solve the flange problem in the mining project to avoid the flange or lack of flanges. It is necessary to purchase large-size stainless steel flanges.
FAQ
What certifications do your products have?
Our products comply with international standards such as ASTM, ANSI, JIS, DIN, and GB. We also hold various certifications to assure quality and reliability, including ISO 9001.
How can I get some samples?
If you need, we will offer you samples for free, but new customers are expected to pay express charge.
To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru, USA, Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.)
Get Quote
Have questions or need a custom solution? Reach out to us!
Our team at Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
Latest News
Industry News
Aug. 07, 2026
Advantages of seamless carbon steel elbows
The raw material for seamless carbon steel elbows is seamless steel pipe. The main production process involves heating and piercing a round tube billet, then rolling it using three-roll cross rolling, continuous rolling, or extrusion to set (or reduce) the outer diameter of the pipe. After cooling, it is straightened. It undergoes direct hydrostatic testing (or flaw detection), is marked, and then stored. Schxx represents the wall thickness grade; 180e (S) indicates a short-radius 180° carbon steel elbow, and 180e (L) indicates a long-radius 180° elbow; 90E (S) indicates a short-radius 90° carbon steel elbow, and 90e (L) indicates a long-radius 90° elbow; 45
Industry News
Aug. 05, 2026
180° carbon steel pipe elbow manufacturing process
The most common manufacturing process for carbon steel pipe bends is hot forming. Hot forming is divided into two types: hot push bending and hot heating bending. Our 180° carbon steel pipe bends are manufactured using the hot push process. The process flow diagram is shown below.
Industry News
Aug. 03, 2026
What are the advantages of using sliding flanges?
A sliding flange is a type of slip-on flange. Slip-on welding involves welding only the outer layer, not the inner layer. Slip-on flanges are typically used for medium- and low-pressure pipelines with a nominal pressure less than 2.5 MPa. There are four types of sealing faces for slip-on flanges: flat face, raised face (RF), FM/M, and tongue and groove (TG). Flat face is the most widely used and the cheapest. A sliding flange is a slip-on flange with a short neck. Carbon steel sliding flanges, or SO flanges, are generally cheaper than welded neck flanges, which is why customers often choose sliding flanges. As the name suggests, a sliding flange fits over a
You Can Contact Us in the Following Ways
authentic013@steelpipes-fitting.com
+86 13668807131
Donghe Industrial Zone, Mengcun County, Cangzhou City, Hebei Province
Get Quote
At Authentic, we understand that every project has unique requirements. Our dedicated team is here to provide you with a customized quote tailored to your specific needs. By filling out the form below, you’ll receive competitive pricing, high-quality product details, and estimated delivery times.
中文
Русский
Español
عربي
