Application: Seamless Carbon Steel Boiler Tubes for High-Pressure Service.

Quality Standard:

ASTM A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High Pressure Service

Size Range:

• Outer Dimensions.: 12.7mm-177.8mm
• Wall Thickness:2.2mm-25.4mm
• Length: 25000mm max

Delivery Condition:

• Annealed, Normalized, Normalized and Tempered.
• Hot-finished tubes need not be heat treated. Cold finished tubes shall be heat treated after the final cold-finishing at a temperature of 1200°F [650°C] or higher.

Chemical Composition(%):

C	Si	Mn	P	S
0.06–0.18	0.25 max	0.27–0.63	0.035 max	0.035 max

Mechanical Properities:

Tensile Strength(Mpa)	Yield Strength(Mpa)	Elongation(%)	Hardness
325 Min	180 Min	35 Min	77 Max

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.

Surface Treatment:

• Oiled, black painted, shot blasted, hot dipped galvanized or phosphate coating.
• Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Note:

• Mill test certificates will be issued according to EN10204.3
• All tubes shall be supplied as per applicable ASTM Specification.
• The tubes Shall be Seamless and the testing shall be as per A 450/A450M.
• Tubes shall be made by the seamless process and shall be either hot-finished or cold-finished, as specified.