316 ERW Stainless Steel Pipe

Our 316 ERW stainless steel pipes are manufactured using advanced Electric Resistance Welding (ERW) technology, ensuring excellent dimensional accuracy, consistent weld quality, smooth surface finish, and reliable mechanical performance.

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Product Introduction

Product Overview

With superior corrosion resistance due to its molybdenum addition, Grade 316 stainless steel performs exceptionally well in chloride-containing environments and harsh industrial conditions. We supply customized sizes, surface finishes, and specifications according to international standards such as ASTM, ASME, EN, DIN, JIS, and GB.

As a trusted stainless steel supplier, we are committed to providing competitive pricing, stable quality, flexible customization, and professional export services to global customers.

Product Specifications

Item	Specification
Product Name	316 ERW Stainless Steel Pipe
Material Grade	ASTM 316 / 316L Stainless Steel
Manufacturing Process	Electric Resistance Welding (ERW)
Outer Diameter (OD)	6 mm – 630 mm
Wall Thickness (WT)	0.5 mm – 50 mm
Length	Standard random length, fixed length, customized length up to 12 meters
Pipe Type	Round Pipe, Square Pipe, Rectangular Pipe (Customized)
Surface Finish	Annealed & Pickled, Bright Annealed, Polished, Hairline
Production Standard	ASTM A312, ASTM A269, ASTM A249, ASME SA312, EN 10217, DIN, JIS
Welding Type	ERW High Frequency Welding
Heat Treatment	Solution Annealing Available
Inspection	PMI Test, Hydrostatic Test, Eddy Current Test, Dimension Inspection

Product Highlights

01/

Superior Corrosion Resistance: Excellent resistance against chlorides, acids, and chemical environments.

02/

High Strength & Durability: Strong mechanical properties for demanding industrial applications.

03/

Precision Manufacturing: Accurate outer diameter, wall thickness, and length control.

04/

Smooth Weld Quality: Advanced ERW process ensures consistent and reliable weld seams.

05/

Excellent Surface Finish: Available in polished, bright annealed, annealed & pickled, and customized finishes.

06/

Custom Manufacturing: Various sizes, lengths, and specifications available.

07/

Global Standards Compliance: Manufactured according to international standards including ASTM, ASME, EN, DIN, JIS, and GB.

Chemical Composition

Element	Content (%)
Carbon (C)	≤ 0.08
Silicon (Si)	≤ 1.00
Manganese (Mn)	≤ 2.00
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.030
Chromium (Cr)	16.0 – 18.0
Nickel (Ni)	10.0 – 14.0
Molybdenum (Mo)	2.0 – 3.0

Manufacturing Process

Raw Material Inspection

High-quality stainless steel coils are inspected for chemical composition and surface quality.

Coil Slitting

Steel coils are precisely cut into required widths.

Tube Forming

The strip is gradually formed into tubular shape through forming rollers.

ERW Welding

High-frequency electric resistance welding creates a strong and uniform weld seam.

Heat Treatment

Solution annealing improves corrosion resistance and mechanical properties.

Surface Treatment

Annealed & pickled, bright annealed, polished, or customized finishing processes are applied.

Inspection & Testing

Each pipe undergoes dimensional inspection, chemical analysis, and quality testing.

Packing & Shipment

Products are safely packed for international transportation.

Quality Control

Raw Material Verification

Positive Material Identification (PMI)

Chemical Composition Testing

Mechanical Property Testing

Weld Quality Inspection

Surface Inspection

Dimensional Measurement

Hydrostatic Testing

Eddy Current Testing

Applications

Chemical Processing Equipment
Petrochemical Industry
Oil & Gas Pipeline Systems
Marine Engineering
Shipbuilding Industry
Food & Beverage Processing
Pharmaceutical Equipment
Water Treatment Systems
Heat Exchangers
Industrial Machinery
Architectural Structures

Packing & Delivery

Export Standard Packing:

Plastic caps protection for pipe ends

Waterproof wrapping

Steel bundle packaging

Wooden cases available upon request

Container loading optimization

Flexible Delivery Options: Support for FOB, CIF, CFR, and DDP trade terms based on client requirements.

FAQ

Q: What is the main advantage of choosing 316 ERW stainless steel pipe over 304 grade?

A: Grade 316 contains an addition of 2.0% to 3.0% molybdenum, which significantly enhances its resistance to pitting, crevice corrosion, and chloride-containing environments compared to Grade 304. This makes 316 ideal for marine, chemical, and pharmaceutical applications.

Q: Can you provide custom lengths or specific shapes other than round pipes?

A: Yes. While standard production includes round pipes in random or fixed lengths up to 12 meters, we also offer custom manufacturing for square, rectangular, and special-shaped pipes based on your exact engineering drawings and specifications.

Q: What international standards do your 316 ERW pipes comply with?

A: Our pipes are manufactured and tested in strict compliance with major global standards, including ASTM A312, ASTM A269, ASTM A249, ASME SA312, EN 10217, DIN, JIS, and GB requirements.

Q: What surface finishes are available for these pipes?

A: We offer multiple surface finishes depending on your application needs, including Annealed & Pickled, Bright Annealed, Mechanical Polished, Hairline finish, and customized treatments upon request.

Q: What non-destructive testing (NDT) and quality checks are performed before shipment?

A: Every production batch undergoes rigorous quality control, including Positive Material Identification (PMI), hydrostatic testing, eddy current testing, dimensional inspections, and mechanical property testing to ensure defect-free performance.

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