Explore our foundational range of precision-manufactured seamless, welded, and anti-corrosion pipeline products built for high-demand configurations.
Deep-dive parameters and mechanical capacities engineered for high-pressure, thermal-stress, and aggressive corrosive environments.
In structural design and process piping, a 2" Schedule 40 (Sch 40) Stainless Steel Pipe serves as an industry benchmark for fluid and gas transportation. Nominal Pipe Size (NPS) 2 designates an outside diameter of exactly 2.375 inches (60.33 mm). Under the Schedule 40 standard parameters governed by ASME B36.19M, the wall thickness is set at 0.154 inches (3.91 mm), resulting in a nominal inside diameter of 2.067 inches (52.51 mm).
Choosing the correct metallurgical alloy (such as ASTM A312 TP304/304L or TP316/316L) ensures long-term operational structural integrity, mitigation of chemical degradation, and absolute reduction of life-cycle maintenance costs.
| Dimensional & Material Parameter | Imperial Units | Metric Units | Engineering Significance / Compliance Standard |
|---|---|---|---|
| Nominal Pipe Size (NPS) | 2.0 Inches | 50 mm (DN50) | Standard designation matching ASME B36.10M / B36.19M |
| Outside Diameter (OD) | 2.375 Inches | 60.33 mm | Critical dimension for sizing butt-weld fittings and flanges |
| Wall Thickness (Sch 40) | 0.154 Inches | 3.91 mm | Determines pressure boundaries and structural loading capacity |
| Inside Diameter (ID) | 2.067 Inches | 52.51 mm | Determines cross-sectional flow area and hydraulic friction loss |
| Weight per Foot / Meter | 3.66 lbs/ft | 5.44 kg/m | Crucial for support hanger spacing design and logistics math |
| Alloy Grade Availability | TP304, TP304L, TP316, TP316L, TP321, TP347, Duplex 2205 | Standard compliance: ASTM A312, ASTM A358, EN 10216-5 | |
| Hydrostatic Test Pressure | Up to 2,500 PSI (Grade dependent) | Non-destructive safety evaluation per ASTM A999 | |
The standard 18/8 chromium-nickel steel. Grade 304L (Low Carbon) eliminates harmful carbide precipitation during welding, ensuring excellent resistance to intergranular corrosion in light chemical environments.
Enriched with 2-3% Molybdenum, providing superior resistance to chlorides, pitting, and marine environments. Grade 316L prevents sensitization during thermal processing and heavy welding configurations.
Our pipes undergo strict dimensional checks. Outside diameter tolerances are kept within ±0.015 inches (0.4 mm), and wall thickness deviations are restricted to under 12.5% per ASTM international directives.
Established in 2003, Shaanxi Kerlimar Engineers Co., Ltd. has developed over two decades into a dominant force in global industrial metallurgy and international steel trade. We specialize in high-performance carbon steel, alloy steel, and stainless steel pipeline products. Our product scope ranges from seamless pipes, straight-seam welded pipes, to spiral welded configurations and precision-matched fittings, conforming rigorously to ASTM, ASME, EN, JIS, and DIN specifications.
Guided by our chairman, Mr. Ming SUN—a dedicated environmentalist and technological innovator—our company group expanded into renewable technologies in 2019. This initiative is aimed at addressing clean energy bottlenecks through vertical axis wind power systems, maglev suspension integration, and floating offshore power grids. In December 2023, our engineering and ecological efforts were recognized on the global stage when we were invited to participate in the prestigious Dubai COP28 Conference, championing solutions to restrict global temperature rise to under 1.5°C.
By blending our core metallurgical steel manufacturing expertise with pioneering eco-technologies, Shaanxi Kerlimar provides high-performance pipeline structures designed to withstand the clean energy transition's most demanding environments.
How the 2" Schedule 40 Stainless Steel Pipe supports vital processing frameworks around the globe.
Within chemical refineries, pipelines transport highly volatile and acidic media. The 2" Sch 40 size is optimized for secondary process lines, chemical injection loops, and bypass systems, where high corrosion resistance under varying thermal states is mandatory.
Modern microchip fabrication plants require ultra-clean environments. Our TP316L electro-polished stainless steel pipes provide contaminant-free conveyance systems for bulk gases, high-purity water loops, and solvent transfer lines.
Offshore oil rigs and commercial vessels operate under constant salt spray and high humidity. Using molybdenum-bearing 316/316L Schedule 40 stainless steel pipelines mitigates crevice corrosion and pitting from chloride exposure.
Rapid industrialization throughout the Americas, Europe, and the Asia-Pacific region has increased the demand for reliable, maintenance-free piping systems. As global regulatory bodies enact stricter environmental and containment policies, industries are transitioning away from carbon steel in favor of corrosion-resistant alloys. By upgrading to 2" Sch 40 stainless steel piping, operators can expect pipeline lifespans exceeding 30 to 50 years, significantly reducing fugitive emissions and pipeline failures.
Through our established global distribution network, Shaanxi Kerlimar addresses supply chain challenges by supplying pre-inspected, project-ready steel pipes directly to ports and industrial sites worldwide, ensuring alignment with local construction timelines.
Meeting regional architectural and mechanical codes through meticulous testing and standardizations.
To serve as a reliable partner on international engineering projects, Shaanxi Kerlimar aligns its production with various regional and application-specific standards. This ensures hassle-free import clearance, rapid installation approvals, and long-term regulatory compliance.
Standards: ASME B36.19M, ASTM A312, ANSI
Our pipes comply with ASTM A312 specifications, defining strict chemical composition and grain size parameters. These products are fully cleared for use under ASME B31.1 (Power Piping) and ASME B31.3 (Process Piping) design codes, supported by certified Mill Test Reports (MTRs) to ASTM A999 guidelines.
Standards: EN 10216-5, PED 2014/68/EU
For European installations, we supply pipes compliant with EN 10217-7 (welded) and EN 10216-5 (seamless). Our manufacturing facilities carry Pressure Equipment Directive (PED) certification, ensuring suitability for pressurized thermal systems across the European Economic Area.
Standards: JIS G3459, GB/T 14976
We manufacture pipes in accordance with JIS G3459 for corrosion-resistant services and GB/T standards for domestic industrial infrastructure, providing complete material traceability for local municipal and state-level projects.
Non-Destructive Testing (NDT) Protocols: Every production batch of 2" Sch 40 stainless steel pipe undergoes hydrostatic pressure testing, eddy current analysis, or ultrasonic inspection. This prevents micro-cracks, weld seams, or wall thinnings from compromising field operations.
Combining innovative steel metallurgy with clean energy designs to support global decarbonization.
In alignment with our participation in the Dubai COP28 Conference, Shaanxi Kerlimar is actively working to reduce the carbon footprint of our steel manufacturing. By partnering with eco-conscious mills that utilize electric arc furnaces (EAF) powered by renewable energy, we aim to offer green-certified stainless steel pipes that contribute to lower Scope 3 emissions for our clients.
Our R&D division, led by Mr. Ming SUN, continues to develop vertical axis wind turbines, floating offshore installations, and maglev-assisted systems. These clean-energy technologies rely heavily on our high-strength stainless and structural steel components, creating a sustainable loop where our steel products directly enable the expansion of green energy infrastructure.
Crucial engineering specifications and application answers for buyers, inspectors, and piping designers.
A nominal 2" Schedule 40 stainless steel pipe has an outside diameter (OD) of 2.375 inches (60.33 mm), a wall thickness of 0.154 inches (3.91 mm), and a resulting inside diameter (ID) of approximately 2.067 inches (52.51 mm).
ASME B36.19M is the specific dimensional standard for stainless steel pipe, where Schedule 40S is designated. ASME B36.10M is the carbon steel pipe standard. For NPS 2, the dimensional profiles (OD and wall thickness) for Sch 40S and Sch 40 are identical. However, for other nominal sizes, wall thicknesses may differ, making it essential to specify the appropriate standard during engineering design.
Grade 316L should be selected for applications involving exposure to chlorides, seawater, high-salinity coastal air, or highly corrosive chemicals like sulfuric and acetic acids. The addition of Molybdenum (2-3%) in 316L provides superior resistance to localized pitting and crevice corrosion compared to 304L.
Yes. Shaanxi Kerlimar offers full OEM customization. We can supply standard 6-meter (20-foot) random lengths, double random lengths, or custom pre-cut segments. Additionally, we offer custom pipe ends, including plain ends, threaded ends, or beveled ends at specific angles (e.g., 37.5° for welding alignment).
We hold National High-tech Enterprise certification (awarded Dec 2020) and supply products compliant with ISO 9001, PED 2014/68/EU, and API specifications. All pipeline shipments include comprehensive Mill Test Reports (MTR) detailing chemical analysis, tensile testing, yield strength, and hydrostatic or non-destructive test results.
Explore our secondary line of high-performance insulated pipes, precision butt-welded fittings, and API-certified tubing solutions.
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