E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
E-mail: authentic013@steelpipes-fitting.com
WhatsApp: +86 13668807131
Nov. 29, 2024
1. Carbon Steel
Features:
High strength and low cost.
Good weldability and machinability.
Good wear resistance, but poor corrosion resistance.
Applicable occasions:
Used in high-pressure piping systems in low-corrosive environments.
Transportation of non-corrosive media such as oil, natural gas, steam, etc.
Common grades:
ASTM A105 (forgings)
ASTM A106 (seamless pipes)
2. Stainless Steel
Features:
Excellent corrosion resistance, especially in acidic or alkaline environments.
High strength, high temperature resistance, and strong oxidation resistance.
High cost and more difficult to process than carbon steel.
Applicable occasions:
Corrosive environments such as chemical, marine, and food processing.
High-pressure systems that require sanitary standards or extreme temperature conditions.
Common grades:
304 (conventional corrosion resistance)
316 (marine environment, chemical industry)
321 (high temperature environment)
3. Alloy Steel
Features:
By adding alloying elements (such as chromium, molybdenum, nickel, etc.), the strength, wear resistance and high temperature resistance are improved.
It has high fatigue strength and pressure resistance.
Corrosion resistance is between carbon steel and stainless steel, and varies according to the alloy content.
Applicable occasions:
High pressure and high temperature environment, such as boilers, pressure vessels, petrochemical equipment.
Applications that need to withstand high mechanical loads.
Common grades:
ASTM A182 F22 (low alloy)
ASTM A335 P91 (high temperature alloy)
Material selection principles
Working pressure and temperature:
Carbon steel is suitable for medium and low temperature environments; stainless steel and alloy steel are suitable for high temperature and high pressure occasions.
Medium characteristics:
Corrosive media require stainless steel or specific alloy steel; carbon steel is suitable for non-corrosive media.
Economical:
Carbon steel has the lowest cost, but the maintenance cost is high for long-term use in corrosive environments. Comprehensive consideration based on specific application scenarios.
According to actual working conditions, reasonable selection of materials can ensure the safety and service life of high-pressure accessories while reducing overall operating costs.
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
Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
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.)
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Our team at Authentic is here to help you find the right pipe fittings and flanges for your specific needs.
You Can Contact Us in the Following Ways
authentic013@steelpipes-fitting.com
+86 13668807131
Donghe Industrial Zone, Mengcun County, Cangzhou City, Hebei Province
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