Special Design for Aisi 321 Stainless Steel Pipe - Austenitic Stainless Seamless Tube – Donghao Metal Group

Austenitic Stainless Steel’s resistance to general corrosion, good weld ability…. Help the design to use them to produce boiler and heat exchanger. It is the most widely used for heat transferring tubing. DMG supply the most grades of tubes with perfect quality, and value-added service.

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

Grades: TP304,TP304L,TP304H,TP304/304L,TP316L,TP316Ti,TP316/316L,TP316LMo2.5, TP317L, TP347H, TP904L, Other grades can be offered on request.

Standards:

ASTM/ASME A/SA213 Seamless ( Ferritic ) and Austenitic Alloy-steel Boiler, Super heater, and Heat-exchanger Tubes

ASTM/ASME A/SA 269 Seamless and welded Austenitic Stainless Steel Tubing for General Service

EN10216-5 TC1

Outside diameter range from 6 – 76.2mm

Wall thickness range from 0.5 – 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