ASTM B407 Nickel-Iron-Chromium Alloys Seamless Tubes

ASTM B407 specification covers the standard requirements for nickel-iron-chromium alloy which include UNS N08120, UNS N08800, UNS N08801, UNS N08810, UNS N08811, UNS N08890, and UNS N06811 in the form of cold-worked and hot-finished annealed seamless pipe and tube. The materials shall be heat treated at certain annealing temperatures and shall conform to the chemical composition limits for nickel, chromium, iron, manganese, carbon, copper, silicon, sulfur, aluminum, titanium, columbium, molybdenum, niobium, tantalum, phosphorus, tungsten, cobalt, nitrogen, and boron. Planimetric method of measurement and tension test shall be conducted in full tubular size, longitudinal strip, or round specimens in the direction of fabrication to determine the grain size and mechanical properties, respectively. These materials shall conform to the specified grain size, yield strength, tensile strength, and elongation requirements. Each pipe or tube shall be subjected to hydrostatic or nondestructive eddy-current tests to determine the allowable fiber stress and to detect significant discontinuities such as drilled hole and transverse tangential notch. The cold-drawn material shall be commercially straight, uniform in quality and temper, smooth, and free of bends, kinks, and other injurious imperfections.

ASTM B407 Seamless Pipes & Tubes Application Industries

• Off-Shore Oil Drilling Companies
• Power Generation
• Petrochemicals
• Gas Processing
• Specialty Chemicals
• Pharmaceuticals
• Pharmaceutical Equipment
• Chemical Equipment
• Sea Water Equipment
• Heat Exchangers
• Condensers
• Pulp and Paper Industry

Product Pictures:

QUALITY CONTROL

1. Incoming Raw Material Inspection

2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects