ASME SA 688 Bright Annealed Stainless Steel heat exchanger u tube

Spezilla produce U-tubes as per standards:

1. ASTM A688/A688M-15 Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes

2. ASTM A803/A803M-12 Standard Specification for Seamless and Welded Ferritic Stainless Steel Feedwater Heater Tubes

3. ASTM A556/A556M-12 Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes

Main Testing Terms and Procedure:

1. Heat Treatment and Solution Annealing / Bright Annealing

2. Cutting to required length and deburring;

3. Chemical Composition Analysis Test With 100% PMI and One tube from each heat by Direct Reading Spectrometer

4. Visual Test and Endoscope Test for Surface Quality Test

5. 100% Hydrostatic Test and 100% Eddy Current Test

6. Ultrasonic Test subject to the MPS (Material Purchase Specification)

7. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test

8. Impact Test subject to Standard request

9. Grain Size Test and Intergranular Corrosion Test

10. Ultrasoic measuring of Wall Thickness

11. Stress Relieve Annealing on U bend Parts after bending

Spezilla provides customers with a vertically integrated supplier, with tube mills and value-add finishing facilities all under one umbrella. We offer wide range of welded, welded-and-drawn, and seamless stainless steel tube and pipe to meet your unique needs.

In addition to a full range of standard sizes and traditional grades, such as 304 and 316, we also supply a wide variety of custom tube and pipe, including the following alloys:

Austenitic – 304, 316, 317L, 321, 347, 904L

Ferritic – 409, 430, 439, 446

Martensitic – 440

Duplex Alloys – 2003, 2101, 2205, 2507