Exceeding all requirements of ASTM and ASME specifications,GANYEAH engineers continually examine each phase of production, refining the methods and the tolerances which are so important to production of Stainless Steel 304 Corrosion Resistance Pipe that performs with superior characteristics in every installation.
RAW MATERIALS
Manufactured to Rath specifications.
• Closely monitored dimensional tolerances, chemical composition, physical properties and mill finish
ORMING
Precise strip alignment and roll forming allow:
• Greater uniformity in weld structure
• Consistent OD and wall tolerances
• Excellent concentricity
WELDING
Three different processes are used on Rath mills, none of which utilizes filler material.
Modern Laser Welding offers high productivity along with low distortion.
• Materials are fused with pinpoint accuracy
• A more homogenous micro- structure is achieved
• Excellent corrosion resistance
TIG welding, a traditional process, utilizes a gas
tungsten arc in a fully automated process providing welded surfaces that are precisely blended on both the ID and OD.
• Superior cosmetic properties
Plasma arc welding offers excellent thick section penetration with smaller heat affected zones for superior welded pipe.
WELD BEAD REFINEMENT
Two different methods are used by Rath to ensure complete blending of the weld bead with parent material, leading to the highest levels of corrosion resistance for all Stainless Steel 304 Corrosion Resistance Pipe grades.
Hammer forging technology is used for commercial tubing and pipe sizes.
• Advantages include uniformity in weld bead dimension and structure for the larger and heavier wall products which are often specified for commercial applications.
Bead rolling and related processes, provide smooth surface finishes required by hygienic and high purity applications.
• Each of these processes cold work the weld bead from both the ID and OD making the weld bead almost undetectable to the human eye.
PACKAGING
Polished finishes are normally individually poly wrapped and shipped in cardboard boxes (electropolished grades are polyamide patched, capped and sleeved per specification and shipped in wood boxes).
• Commercial quality Stainless Steel 304 Corrosion Resistance Pipe is shipped in square or hex bundles in truck load quantities. Triple-wall cardboard or wood boxes are available for smaller quantities.
• Bar coded labeling ensures proper routing and identification.
FINISHING
Rath offers a complete range of surface finishes.
• Mechanical polishing of the ID to 20 µ-in Ra maximum and the OD to 30 µ-in Ra maximum.
• Electropolishing to 10 µ-in Ra or 15 µ-in Ra maximum with packaging and cleaning in the Rath Class 5 Cleanroom.
