ASTM B730

ASTM B730 - Welded Tube

ASTM B730 alloy welded tube has with small diameter.These tubes are used in power generation and transmission, chemical and refinery industries. These tubes provide excellent resistant in acidic atmosphere. They come in various bends with different forms like square, rectangular, etc.

Scope And Manufacturing

ASTM B730 specification covers Alloy 200 (UNS N02200), Alloy 201 (UNS N02201), and Alloy 400 (UNS N04400) Welded Tube. The welding process involves forging individual metal over a mandrel to produce an open tube and then heating the mating edges of the open seam and welding them by pressing them together mechanically in a draw bench. The welding process involves hot pressure welding, Electric resistance welding (ERW), Electric Arc Welding (Fusion Welding). The tube forming process is not done over endless lengths, but in single pipe lengths. The surface finish required for tube is given by a downstream heat treatment, strain hardening or cold working process. These tubes shall be made from flat-rolled material by an automatic welding process with no addition of filler metal. Subsequent to welding, and prior to heat treatment, the tubes shall be cold worked to assure that optimum corrosion resistance in the weld area and base metal will be developed during heat treatment. Tubes shall be furnished with a scale-free finish. When bright annealing is used, descaling is not necessary.

Mumbadevi Steel India (MSI) is a renwoned exporter of Alloy 400, alloy 200 and alloy 201 which is widely used in marine and chemical processing are exported by Mumbadevi Steel India (MSI) . Alloy like Alloy 201, Alloy 200 having enhanced strength and hardness with only slight impairment of ductility and impact resistance are also distributed by us.