Famous 304 Stainless Steel 3 Inch Pipe Supplier & Manufacturer

Industry-Leading Corrosion Resistance & Structural Integrity for Global Infrastructure

The Definitive Guide to 304 Stainless Steel 3 Inch Pipes

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Superior Composition

AISI 304 stainless steel contains 18% chromium and 8% nickel, providing a stable austenitic structure. This metallurgy ensures high resistance to oxidation and corrosion in various chemical and atmospheric environments.

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Dimensional Accuracy

A 3-inch pipe typically refers to the Nominal Pipe Size (NPS). Our manufacturing process ensures an Outside Diameter (OD) of 3.5 inches (88.9 mm), with wall thicknesses ranging from Schedule 5 to Schedule 80S.

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Versatile Application

From food processing to architectural framework, the 304 stainless steel 3-inch pipe offers the perfect balance between tensile strength and weight, making it the industry standard for fluid transport.

Technical Excellence and Standards

As a leading 304 stainless steel pipe manufacturer, our products adhere strictly to ASTM A312 (for seamless and welded pipes), ASTM A358 (electric-fusion-welded for high-temperature service), and ASME B36.19M. For global buyers, these standards are non-negotiable, ensuring that every 3-inch pipe integrates seamlessly with existing piping systems worldwide.

The "Information Gain" here lies in our specific passivation process. Unlike standard suppliers, Shaanxi Kerlimar utilizes a secondary electrochemical cleaning stage, which thickens the protective chromium-oxide layer, extending the service life of pipes by up to 25% in high-salinity environments.

Why Source 3 Inch Pipes from China Factories?

China's stainless steel industry has evolved from a volume-based model to a quality-centric powerhouse. Working with a dedicated supplier like Shaanxi Kerlimar Engineers Co., Ltd. provides several strategic advantages:

  • 🔹 Vertical Integration: Access to raw steel mills directly results in lower cost per linear meter.
  • 🔹 Rapid Prototyping: Custom lengths, schedules, and surface finishes (2B, No.4, Mirror) can be produced with short lead times.
  • 🔹 Global Logistics: Close proximity to major ports like Tianjin and Qingdao ensures efficient shipping to Europe, Americas, and SE Asia.
21+
Years Exp
40+
Patents
100%
QC Tested
ASTM
Certified

KERLIMAR Shaanxi Kerlimar Engineers Co., Ltd

Shaanxi Kerlimar Engineers Co., Ltd. was established in 2003, has long been engaged in international trade business, mainly a variety of pipes, carbon steel, alloy steel, stainless steel material, seamless pipe, straight seam welded pipe, spiral welded pipe and matching pipe fittings. Manufacturing standards for ASTM, ASME, EN, JIS and so on, in line with international standards. We are providing good quality, price competition, timely delivery, perfect service!

21 years
Established in 2003
40+
More than 40 patents
OEM
Custom Delivery
PCT
Intl Patents
Company Culture

kerlimar Company Culture

The chairman of the company: Mr. Ming SUN, is a strong environmentalist and a fan of technological innovation. He cares about climate change and environmental protection, and makes continuous efforts and takes action for it.

Began in 2019, in response to the national innovation, public entrepreneurship, launched the clean energy technology research and development, then focus on the new vertical axis wind power technology research and development...

KERLIMAR Our Strength

In December 2020, we won the national High-tech Enterprise certification, in June 2021, we were invited to participate in the China-Finland High Technology Match Conference, in August 2022, we participated in the 11th China Innovation and Entrepreneurship Competition, and won the Excellence award.

Awards

Macro Industry Solutions: Beyond Just a Pipe

In today's global economy, procurement teams are looking for more than a product—they seek a partner that understands the macro-environment. Shaanxi Kerlimar integrates stainless steel manufacturing with clean energy visions.

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The Pharmaceutical Grade

Our 3-inch 304 pipes are refined for sanitary use, featuring internal bead smoothing and electropolishing to prevent bacterial growth in medical and pharmaceutical fluid lines.

Energy Infrastructure

Supporting the "double carbon" goals, our pipes are utilized in geothermal energy transfer and vertical axis wind turbine grid structures, where durability is paramount.

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Sustainable Architecture

Stainless steel is 100% recyclable. We provide green steel certifications to help global construction firms achieve LEED and BREEAM sustainability standards.

Global Procurement Trends for 2024-2025

We see a significant shift toward digital transparency. Major EPC (Engineering, Procurement, and Construction) companies now require real-time tracking and comprehensive digital MTCs (Mill Test Certificates). As a high-tech enterprise, Kerlimar offers fully traceable documentation for every batch of 304 stainless steel pipe, ensuring that "Famous" quality is backed by data.

Expert Q&A: 304 Stainless Steel Pipes

Q: What is the difference between 304 and 304L stainless steel in 3-inch pipes?
A: 304L is a low-carbon version of 304. The 'L' stands for low carbon, which helps prevent carbide precipitation during welding, making it superior for heavy-gauge components or high-weld applications.
Q: Can a 3-inch 304 pipe be used for high-pressure applications?
A: Yes, but the pressure rating depends on the wall thickness (Schedule). A Schedule 40 3-inch 304 pipe has a higher working pressure than a Schedule 10. Always consult engineering charts for ASTM A312 pressure limits.
Q: How does Shaanxi Kerlimar ensure the quality of its stainless steel pipes?
A: We perform a suite of tests including hydrostatic testing, eddy current testing, and PMI (Positive Material Identification) to verify chemical composition before shipment.
Q: What is the standard lead time for a bulk container of 3-inch stainless pipes from China?
A: Typically, production takes 15-25 days, with an additional 20-30 days for sea freight depending on the destination port. Kerlimar offers expedited OEM services for urgent projects.