Stainless Steel Seamless Pipe ASTM A312/ASME SA312
Our company adheres to ASTM A312 and ASME SA312 standards to ensure that every stainless steel pipe meets the highest quality benchmarks. We employ advanced testing processes, including chemical composition analysis, tensile and hardness testing, as well as non-destructive evaluations, to guarantee exceptional performance in high-temperature, high-pressure, and corrosive environments.
Each batch of products undergoes rigorous quality control checks to ensure compliance with project specifications, providing you with reliable and durable piping solutions.
Contact us today for pricing details on ASTM A312/ASME SA312 seamless pipes.
ASTM A312, A312M ASME SA312 / SA312M Stainless Steel Seamless Tube & Pipe

Standard: ASTM A312, A312M ASME SA312 / SA312M
Material/Steel Grade: TP304, TP304L, TP304H, TP310, TP310S, TP316, TP316L, TP316Ti, TP317, TP317L, TP321, TP321H, TP347, TP347H
Application: Seamless Austenitic Stainless Steel Pipes
Size: OD: 1/4″~20″ WT: SCH5S~SCH80S
Finish: Mill
Our company has sufficient spot inventory, covering seamless and welded stainless steel pipes of various specifications and materials, including mainstream models such as 304, 316, 304L, 316L, etc., to meet your purchasing needs at any time.
What is ASTM A312 and SME SA312?
ASTM A312 vs. ASME SA312: Overview and Applications
1. ASTM A312:
- Definition: A standard by the American Society for Testing and Materials (ASTM) for seamless and welded austenitic stainless steel pipes designed for high-temperature and corrosive environments.
- Applications: Commonly used in petroleum, chemical, natural gas, nuclear power, food, and pharmaceutical industries, particularly for high-temperature and high-pressure pipeline systems.
- Steel Grades: Includes 304, 316, 304L, and 316L, known for their corrosion resistance and mechanical properties.
- Manufacturing Process:
- Seamless pipes: Made via perforation and hot rolling or cold drawing.
- Welded pipes: Produced by welding steel plates or strips.
- Testing Requirements: Includes tensile, flattening, hardness, and hydrostatic tests to ensure strength and durability.
2. ASME SA312:
- Definition: A standard from the American Society of Mechanical Engineers (ASME) under its Boiler and Pressure Vessel Code (BPVC), specific to pressure vessels and high-temperature piping systems.
- Applications: Primarily used in boilers, heat exchangers, pressure vessels, and piping systems requiring ASME BPVC compliance.
- Steel Grades: Covers stainless steels such as 304, 316, 304L, and 316L, similar to ASTM A312.
- Manufacturing Process:
- Seamless pipes: Perforated and hot rolled or cold drawn.
- Welded pipes: Formed from steel plates or strips.
- Testing Requirements: Includes strict mechanical property and non-destructive tests to ensure safety in high-pressure and high-temperature applications.
Key Differences Between ASTM A312 and ASME SA312:
Standard Organization:
- ASTM A312: Issued by ASTM for general industrial use.
- ASME SA312: Adopted by ASME for pressure vessels and piping systems under BPVC requirements.
Application Scope:
- ASTM A312: Broadly used across industries.
- ASME SA312: Focuses on pressure vessels and piping requiring ASME compliance.
Similarities Between ASTM A312 and ASME SA312:
- Both apply to seamless and welded austenitic stainless steel pipes.
- Share similar material specifications, mechanical properties, and testing requirements.
- Ensure reliability and safety in harsh environments.
Whether you’re working with general industrial systems or pressure vessels, both standards ensure the highest levels of quality, making them integral to various critical applications.