TP304 TP316 TP321 Stainless Seamless Steel Pipes for Gas, Structure, Boiler and

Product Specification

TP304 TP316 TP321 Stainless Seamless Steel Pipes for Gas, Structure, Boiler and Heat Exchanger Applications

1．Product Overview

Stainless seamless steel pipes are widely used in gas transportation, industrial structure systems, heat exchangers, boilers, super heaters, and fluid transmission applications.

The seamless production process improves pressure resistance, wall thickness consistency, and structural stability. Austenitic stainless steel grades including TP304, TP316, and TP321 provide stable corrosion resistance and processing performance for industrial service environments.

These pipes are suitable for chemical processing systems, industrial pipelines, thermal equipment, mechanical structures, and gas transportation projects.

2．Technical Solution

• The pipes are manufactured according to ASTM, JIS, DIN, GOST, and BS standards for industrial piping applications.
• TP304 and TP304L are commonly used for general corrosion-resistant piping systems.
• TP316 and TP316L provide improved corrosion resistance in chloride-containing or chemical environments.
• TP321 contains titanium stabilization for elevated temperature applications and heat-resistant systems.
• The seamless structure improves pressure performance and supports high-temperature and industrial operating conditions.

3．Specifications

4．Application

These stainless seamless steel pipes are suitable for:

• Gas transportation systems
• Industrial structure applications
• Heat exchangers
• Super heaters
• Boiler systems
• Chemical processing equipment
• Fluid transportation pipelines
• Mechanical engineering systems
• Industrial pressure piping
• High-temperature process systems

5．Processing

• Pipes can be supplied with plain ends, beveled ends, or customized cutting lengths.
• Surface conditions including annealed and pickled finishes are available according to project requirements.
• Bundling, export packing, marking, and customized dimensions can be arranged according to customer specifications.

6．Advantages

• The seamless structure improves pressure resistance and dimensional stability.
• TP304 and TP316 grades provide stable corrosion resistance for industrial service conditions.
• TP321 supports elevated temperature and thermal cycling environments.
• Wide dimensional ranges support industrial piping, structure, and heat transfer systems.
• Multiple international standards support export and engineering project requirements.
• Suitable for fluid, gas, heat exchanger, and boiler applications.

7．How to Choose

• Choose TP304 for general industrial and structural applications.
• Choose TP316 for chemical processing or chloride-containing environments.
• Choose TP321 for elevated temperature and heat-resistant applications.
• Confirm outer diameter, wall thickness, length, and surface condition before production.
• Select the applicable standard according to project and engineering requirements.

8．FAQ

Q1．What are the main applications of stainless seamless steel pipes
They are used in gas transportation, industrial structure systems, heat exchangers, boilers, and fluid pipelines.

Q2．What stainless grades are available
TP304, TP304L, TP316, TP316L, TP321, 200, 201, and 201H grades are available.

Q3．What is the available size range
Outer diameter ranges from 6mm to 610mm, and wall thickness ranges from 0.8mm to 30mm.

Q4．Can customized lengths be supplied
Yes. Maximum length is 12000mm, and customized cutting lengths are available.

Q5．What standards are supported
ASTM, JIS, DIN, GOST, and BS standards are supported according to application requirements.