Executive Tube Standard:
ASTM A178 Specification for ERW Carbon Steel and Carbon-Manganese Steel Boiler Tubes and Superheater Tubes

Size Range: 20 – 127 mm (OD) x 0.5 – 7mm (WT)

Specifications:  Tight tolerance, Smooth surface, Uniform mechanical property(Mechanical Properties equilibrium) ;

Heat treatment: BKS, GBK, Stress Relief, Anneal, Annealing ; Continuous stenciling as required ;

Rust prevention treatment:

• immersion oil, lacquer, passivation, phosphating,etc;
• Plastic plugs or caps on both ends as required ;

Surface treatment: A1780/A450-Temporary Coating, Special Coating, Galvanized, immersion oil, lacquer, passivation, phosphating,etc; Or Oil-dip paint black with two plastic caps on each end

Inspection: Strictly according to the standard requirements and offer the original MTC (EN10204.3.1/3.1B)

Packaging: Hexagonal bundles of max. 1,500kg with several steel strips, Wrapped in waterproof paper, PVC sleeve,and sackcloth with several steel strips or packed in heavy tri-wall boxes, wooden boxes, wooden slats as requires;Type: Round , Square, Rectangle, Hexagon. Streamline, etc;

Relevant Test: Chemical Component Analysis,Mechanical Properties(Ultimate tensile strength,Yield strength,Elongation),Technics Properties(Flattening Test,Flaring Test,Bending Test,Hardness Test,Blow Test,etc), Exterior Size Inspection, Nondestructive Test,Hydrostatic Test.