What is stainless steel?
'Stainless' is a term coined early in the development of these steels for cutlery applications. It was adopted as a generic name for these steels and now covers a wide range of steel types and grades for corrosion or oxidation resistant applications.
Stainless steels are iron alloys with a minimum of 10.5% chromium. Other alloying elements are added to enhance their structure and properties such as formability, strength and cryogenic toughness. These include metals such as:
Nickel
Molybdenum
Titanium
Copper
Carbon
Nitrogen
Non-metal additions are also made, the main ones being:
The main requirement for stainless steels is that they should be corrosion resistant for a specified application or environment. The selection of a particular "type" and "grade" of stainless steel must initially meet the corrosion resistance requirements. Additional mechanical or physical properties may also need to be considered to achieve the overall service performance requirements.
Stainless Steel Pipe Welding Purging Specification :
Specifications : ASTM, ASME
Dimensions : ASTM A - 270, 249, 312, 269, 213, 268, 358, ASTM A106
Thickness : 0.5 to 150mm Thick
Size : 5mm to 600mm
Length : Single Random, Double Random & Required Length, Cut length, Fix length, 100mm to 12mtr long.
Form : Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
Type : ERW
Stainless Steel Pipe Welding Purging
Material & Grades :
Stainless Steel ERW Pipes & Tubes : ASTM A - 270, 249, 312, 269, 213, 268, 358 304, 304L, 316, 316L, 317L, 321, 316 Ti, 309, 310, 904L, 410, 420, 430, 431, 202, etc
Carbon Steel ERW Pipes & Tubes : ASTM A106, IS1239, IS3589, Api 5L, ASTM A106, IS1239, IS3589, Api 5L.
