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

Non-metal additions are also made, the main ones being:

• Carbon

• Nitrogen

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.