Quality Inspection for Third Party Inspection Certificates - Duplex Seamless tube – Donghao Metal Group

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Our improvement depends on the superior equipment, excellent talents and continuously strengthened technology forces for Industrial Stainless Steel Pipe , Astm 304 321 316 316l Stainless Steel Tube , 5mm 2b Stianless Tubing , If you have the requirement for any of our products, please contact us now. We are looking forward to hearing from you soon.

Quality Inspection for Third Party Inspection Certificates - Duplex Seamless tube – Donghao Metal Group Detail:

As the duplex and super duplex stainless steel has both the advantages of ferritic stainless steel and the austenitic stainless steel, they are widely used to produce heat transferring tubing for petrochemical industry, sea water treatment…. in aggressive acidic, chloride containing environments. DMG supply duplex tubes with high quality.

Delivery Condition: Annealed & Pickled, Annealed & Pickled + Polished

Grades: S31803, S32205, S32750, S32550, S32760, Other grades can be offered on request.

Standards:

ASTM/ASME A/ SA789 Seamless and welded Ferritic /Austenitic Stainless Steel Tubing for General Service

ASTM/ASME A/SA790 Seamless and welded Ferritic /Austenitic Stainless steel pipe

Outside diameter range from 12-76.2mm

Wall thickness range from 0.71-12mm

Inspection & Test：

1. 100% PMI / Chemical analysis tests.

2.100% Dimension tests & 100% Visual examination

3. Tension test, flange test, hardness test, flattening test

4. 100% Eddy Test or Hydrostatic Test before bending and 100% Hydrostatic test after bending

5. Checking stress released heat treatment in bending area plus 300mm straight leg length after bending with agreement with clients.

Notes: all the tests and inspection need to provide with reports according to standard and test results.

Length: Random Length / Fixed Length

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This manufacturers not only respected our choice and requirements, but also gave us a lot of good suggestions, ultimately， we successfully completed the procurement tasks.

By Lee from Liberia - 2015.11.11 19:52

We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.

By Norma from Netherlands - 2016.01.11 17:15