ERW Boiler Tubes

Field of Application

Boilers and heat exchangers.

Production Standards

• BS 3059 Part I & II

• ASTM A 178

• DIN 17177

Material Quality

• BS 3059 Gr 320, Gr 360

• ASTM A 178 Gr A

• DIN 17177 St 37.8, St 42.8

Delivery Conditions

• Normalized

Finishing Operations

Plain End - Square cut or beveled.

Tests Performed

• Visual and Dimensional Inspection

• Mechanical Tests:
   *  Tensile Test
   *  Flattening Test
   *  Expanding Test
   *  Flaring Test

• Metallographic Examination

• Chemical Analysis

• Hydrostatic Test

• Non Destructive Inspection:
   *  In-Line Ultrasnic (weld check)
   *  On-Line Eddy Current

Mill Test Certificates

Acc. to DIN 50049 (EN 10204) 2.2, 3.1 A/B/C

Surface Conditions

• Black self colored/uncoated

• Surface protective coating (black varnished)

ERW Boiler Tubes Size Ranges