ASTM A312 TP304L Austenitic Stainless Seamless Pipe With Pickled surface

ASTM A312 TP304L Austenitic Stainless Seamless Pipe With Pickled surface

Company Profile

Since established in 2006, MTSCO has become a leading company in China's stainless steel pipe exports. We make deep strategic investments in partner factories, such as HUXIN Pipe with 36 years of specialized expertise, to ensure consistent product quality and delivery reliability. Our manufacturing facilities feature advanced equipment and refined processes. We offer a comprehensive range of product specifications and possess specialized capabilities for supplying extended-length pipes up to 18 meters and 25 meters. All products are certified under multiple authoritative standards including ISO, PED, and M650. Our products meet the highest international standards for safety and reliability. MTSCO is committed to providing customers with one-stop procurement services featuring fully certified, reliable quality products, making us your trusted partner.

Material Properties

304L Seamless Pipe is a low-carbon austenitic stainless steel. Its core advantages lie in exceptional corrosion resistance and sound mechanical properties. By controlling carbon content, it effectively minimizes carbide precipitation in temperature-sensitive ranges, significantly enhancing resistance to intergranular corrosion. This material performs stably from cryogenic temperatures to approximately 425°C (832°F). It finds extensive applications in chemical processing, food manufacturing, and construction. All TP304L material supplied by MTSCO originates from reputable steel mills. Our rigorous material traceability system (PMI) ensures precise composition, guaranteeing corrosion resistance compliance with standards from the source.

Chemical Composition Of 304L Seamless Pipe

Quality Control System

We implement a three-tiered quality inspection process throughout production to ensure zero-defect delivery. First, source control: Raw materials are sourced from reputable large-scale manufacturers, with each batch undergoing PMI testing.  Second, process monitoring: Professional inspectors oversee every production stage, documenting procedures with photographic records for full traceability. Finally, Final Inspection. MTSCO conducts comprehensive testing including dimensional measurement, PMI test, ultrasonic testing, and hydrostatic testing, with third-party certification available upon request. Our dedicated team of nearly 20 quality control specialists rigorously executes these three stages, guaranteeing the reliable performance of every 304L seamless pipe you receive.

Specifications Of 304L Seamless Pipe

FAQ Of 304L Seamless Pipe

Q1: What is the main difference between ASTM A312 TP304L and TP304?

A1: The primary difference lies in carbon content. TP304L is a low-carbon version (C ≤ 0.035%), effectively preventing intergranular corrosion caused by carbide precipitation during welding or high-temperature service. This makes it more suitable for welded components and specific corrosive environments.

Q2: What are the benefits of a “pickled surface”?

A2: Pickling effectively removes scale formed during stainless steel heat treatment and establishes a complete passivation layer on the surface. This not only provides a uniform matte gray appearance but also significantly enhances corrosion resistance. It is a common and recommended surface treatment for industrial standard pipes.

Q3: Can MTSCO supply products compliant with the EU Pressure Equipment Directive (PED)?

A3: Absolutely. Both MTSCO and our strategic partner factories hold PED certification. We can supply pressure vessel tubing fully compliant with EU PED requirements, accompanied by relevant certification documentation.