ASTM A774 TP TP304L TP316L TP317L TP321 TP347 As-Welded Wrought Austenitic Stainless Steel Fittings For General Corrosive Service

Material and Specification

ASTM A774 is the standard specification for as-welded wrought austenitic stainless steel fittings for general corrosive service. This specification covers various grades of stainless steel fittings, including TP304L, TP316L, TP317L, TP321, and TP347. These fittings are primarily used in industries where resistance to corrosion is crucial, such as chemical processing, oil and gas, pharmaceuticals, and food processing.

Key Features

The key features of ASTM A774 stainless steel fittings are:

1. Corrosion Resistance: These fittings are designed to withstand general corrosive environments, including acids, alkalis, and chloride solutions.
2. High Strength: The austenitic stainless steel grades used in these fittings offer excellent mechanical properties, ensuring durability and reliability.
3. Weldability: As-welded fittings are manufactured using a welding process that ensures strong and secure joints, providing leak-free connections.
4. Versatility: ASTM A774 fittings are available in various sizes, shapes, and configurations, making them suitable for a wide range of applications.
5. Longevity: The high-quality stainless steel used in these fittings offers exceptional resistance to corrosion, ensuring a long service life.

Chemical Composition

The chemical composition of the ASTM A774 stainless steel fittings is as follows:

Mechanical Properties

The mechanical properties of the ASTM A774 stainless steel fittings are as follows:

Steel Grade

The steel grades covered by ASTM A774 are TP304L, TP316L, TP317L, TP321, and TP347. These grades are austenitic stainless steels that offer excellent corrosion resistance and mechanical properties.

Application

ASTM A774 stainless steel fittings are widely used in various industries for general corrosive service. Some common applications include:

1. Chemical Processing: These fittings are suitable for handling corrosive chemicals, acids, and alkalis in chemical plants.
2. Oil and Gas: They are used in offshore platforms, refineries, and pipelines where resistance to corrosive environments is crucial.
3. Pharmaceuticals: The fittings are utilized in pharmaceutical manufacturing processes that require sterile and corrosion-resistant equipment.
4. Food Processing: They find application in food and beverage processing plants, ensuring hygienic and corrosion-resistant systems.
5. Petrochemicals: ASTM A774 fittings are used in the petrochemical industry for handling corrosive fluids and gases.

Possible Alternative Grades

While ASTM A774 specifies specific grades for as-welded wrought austenitic stainless steel fittings, there are alternative grades available in the market. Some possible alternative grades include:

1. TP304: Similar to TP304L, but with a slightly higher carbon content.
2. TP316: Similar to TP316L, but with a slightly higher carbon content.
3. TP317: Similar to TP317L, but with a slightly higher carbon content.
4. TP321H: A high-carbon version of TP321, offering improved high-temperature strength.
5. TP347H: A high-carbon version of TP347, providing enhanced high-temperature strength.

Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.

Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.

At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.