316 / SUS316

316 / 316L Stainless Steel Industrial Pipe

Molybdenum-bearing stainless steel pipe with better resistance to pitting, crevice corrosion and chloride environments than 304.

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316 stainless steel industrial pipe product shot showing molybdenum-bearing tube ends
2006
Manufacturing since
130+
Production lines
500+
Distributors worldwide
GB·ASTM·JIS·DIN
Standards supplied

Overview

316 stainless steel pipe is a molybdenum-bearing grade chosen when 304 no longer offers enough corrosion margin. The molybdenum addition improves resistance to pitting, crevice corrosion and chloride-containing environments, which makes it the default choice where salts, acids or aggressive process media are present.

It is suitable for chemical, pharmaceutical, coastal or salt spray environments, water treatment, higher-grade food pipelines, heat exchangers, marine engineering and chloride-containing media. Where intergranular corrosion is a concern after welding, the low-carbon 316L variant is specified to keep performance stable across heat-affected zones.

We supply 316 and 316L in welded or seamless form, with passivation, polishing, pressure testing and material certificates available by order. Final dimensions, finish and inspection scope are confirmed against your RFQ so the pipe matches the service conditions of your project.

Close-up of stainless steel round pipe surface and tube wall
At a glance

Material summary

The essentials buyers weigh when specifying 316 industrial pipe.

Core advantages
Molybdenum-bearing stainless steel with better resistance to pitting, crevice corrosion and chloride-containing environments than 304.
Typical applications
Chemical processing, pharmaceutical equipment, coastal or salt spray environments, water treatment, higher-grade food pipelines, heat exchangers, marine engineering and chloride-containing media.
Purchasing notes
Confirm 316 or 316L, molybdenum content, intergranular corrosion requirements, pickling and passivation, roughness, pressure test and third-party material certificate when needed.
Specifications

Pipe specifications

Reference ranges — final spec is confirmed from your RFQ.

Outside diameter / OD
Common purchasing range: Φ6mm-325mm; corrosion and pressure projects may use standard series, non-standard OD or drawing-based production.
Wall thickness / WT
Common purchasing range: 0.3mm-10mm; chemical, pressure and heat-exchanger applications often confirm wall thickness grade or Schedule.
Length
6m is standard; fixed length, random length or long length can be discussed according to project and transport limits.
Surface finish
BA, 2B, brushed, polished, pickled and passivated, mirror finish. Chemical, pharmaceutical and coastal environments often require passivation or fine polishing.
Manufacturing process
Welded stainless steel pipe or seamless stainless steel pipe; cold drawn, cold rolled, hot rolled, solution treated, pickled and passivated, internal and external polished options.
Common standards
ASTM A312, ASTM A269, ASTM A270, ASTM A778; JIS G3459; GB/T 12771, GB/T 14976.
Industry use
Chemicals, pharmaceuticals, coastal or salt spray environments, water treatment, high-grade food piping, heat exchangers, marine engineering and chloride environments.
Customization
316 / 316L, sanitary internal polishing, pickling and passivation, pressure testing, NDT and material certificate can be customized by order.
Why 316

Where the molybdenum earns its place.

The practical reasons procurement teams move up from 304 to 316.

01

Chloride and pitting resistance

Molybdenum-bearing chemistry gives 316 better resistance to pitting and crevice corrosion than 304, which matters wherever chlorides, salts or aggressive media are present.

02

Coastal and marine ready

From salt spray atmospheres to marine engineering and seawater-adjacent service, 316 holds up where standard grades would start to corrode.

03

Chemical and pharma duty

Suited to chemical processing, pharmaceutical equipment, water treatment and higher-grade food pipelines, with passivation and polishing available for cleanliness-critical lines.

For chloride, chemical or pressure service, define the medium, temperature, pressure, target standard and inspection scope before placing an RFQ. Send your requirements.
RFQ checklist

Confirm these before you order

  • 316 or 316L
  • Welded or seamless pipe
  • Passivated or polished finish
Keep exploring

Related products & reading

304 Industrial Pipe →Industrial Fluid Pipe →Custom Industrial Pipe →Our process →Stainless steel grades →Pipe standards →
Common questions

316 FAQ

When is 316 worth it over 304?

When the line sees chlorides, salt spray, marine or chemical exposure — the molybdenum in 316 gives better resistance to pitting and crevice corrosion than 304.

316 or 316L — which should I order?

316L is the low-carbon variant for welding-heavy or more corrosion-sensitive work. Confirm 316 vs 316L, passivation and any NDT or pressure-test requirement in your RFQ.

What finishes are available for 316?

BA, 2B, brushed, polished, pickled & passivated and mirror. Chemical, pharmaceutical and coastal work often specifies passivation or fine polishing.

Request a quote: 316 Industrial Pipe

Tell us your grade, service conditions and inspection scope and our team will quote accurate 316 or 316L pipe.

  • Manufacturer-direct from Foshan since 2006
  • GB · ASTM/ASME · JIS · DIN or your drawings
  • Export-ready packing & inspection support

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